Delete GRID 1550 directory
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/* Copyright 2019 Frank Adams
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// This software implements a GRID 1550 Laptop Keyboard Controller using a Teensy LC
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// for use with a Windows PC.
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//
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// Revision History
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// Initial Release Dec 12, 2019 - Created from Linux version, uses alt codes for \ and | which are not
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// compatible with Linux
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//
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#define MODIFIERKEY_FN 0x8f // give Fn key a fake HID code
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#define CAPS_LED 13 // Teensy LED on IO#13 shows Caps-Lock
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#define NUM_LED 0 // Teensy IO#0 shows Num-Lock (wire to anode of new LED)
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//
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const byte rows_max = 11; // sets the number of rows in the matrix
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const byte cols_max = 13; // sets the number of columns in the matrix
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//
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// Load the normal key matrix with the Teensyduino key names
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// described at www.pjrc.com/teensy/td_keyboard.html
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// A zero indicates no normal key at that location.
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int normal[rows_max][cols_max] = {
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{0,0,0,0,0,KEY_F1,KEY_F2,KEY_F3,KEY_F4,KEY_F5,0,KEY_F9,0},
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{0,0,0,0,KEY_SPACE,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,KEY_ESC,KEY_1,0,KEY_F6,KEY_F7,KEY_F8,KEY_F10,0},
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{0,0,0,0,0,KEY_TAB,KEY_Q,KEY_W,KEY_2,KEY_3,0,KEY_6,0},
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{0,0,0,0,0,KEY_CAPS_LOCK,KEY_A,KEY_S,KEY_E,KEY_4,KEY_5,KEY_7,0},
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{0,0,0,KEY_LEFT,0,0,0,KEY_Z,KEY_F,KEY_D,KEY_8,KEY_9,0},
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{0,0,0,KEY_DOWN,0,0,KEY_X,KEY_C,KEY_G,KEY_R,KEY_T,KEY_0,0},
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{0,0,0,KEY_NUM_LOCK,0,KEY_SCROLL_LOCK,KEY_V,KEY_B,KEY_H,KEY_Y,KEY_U,KEY_MINUS,0},
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{0,0,0,KEY_TILDE,0,KEY_UP,KEY_N,KEY_M,KEY_J,KEY_K,KEY_I,KEY_INSERT,0},
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{0,0,0,KEY_BACKSLASH,0,KEY_RIGHT_BRACE,KEY_COMMA,KEY_BACKSPACE,KEY_L,KEY_DELETE,KEY_O,KEY_EQUAL,0},
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{0,0,0,KEY_RIGHT,0,KEY_ENTER,KEY_SLASH,KEY_PERIOD,KEY_QUOTE,KEY_SEMICOLON,KEY_LEFT_BRACE,KEY_P,0}
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};
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// Load the numlock key matrix with key names at the correct row-column location.
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// This matrix is the same as the normal matrix except for the number pad keys
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// A zero indicates no numlock key at that location.
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int numlock[rows_max][cols_max] = {
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{0,0,0,0,0,KEY_F1,KEY_F2,KEY_F3,KEY_F4,KEY_F5,0,KEY_F9,0},
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{0,0,0,0,KEY_SPACE,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,KEY_ESC,KEY_1,0,KEY_F6,KEY_F7,KEY_F8,KEY_F10,0},
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{0,0,0,0,0,KEY_TAB,KEY_Q,KEY_W,KEY_2,KEY_3,0,KEY_6,0},
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{0,0,0,0,0,KEY_CAPS_LOCK,KEY_A,KEY_S,KEY_E,KEY_4,KEY_5,KEYPAD_7,0},
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{0,0,0,KEY_LEFT,0,0,0,KEY_Z,KEY_F,KEY_D,KEYPAD_8,KEYPAD_9,0},
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{0,0,0,KEY_DOWN,0,0,KEY_X,KEY_C,KEY_G,KEY_R,KEY_T,KEYPAD_ASTERIX,0},
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{0,0,0,KEY_NUM_LOCK,0,KEY_SCROLL_LOCK,KEY_V,KEY_B,KEY_H,KEY_Y,KEYPAD_4,KEY_MINUS,0},
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{0,0,0,KEY_TILDE,0,KEY_UP,KEY_N,KEY_M,KEYPAD_1,KEYPAD_2,KEYPAD_5,KEY_INSERT,0},
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{0,0,0,KEY_BACKSLASH,0,KEY_RIGHT_BRACE,KEYPAD_0,KEY_BACKSPACE,KEYPAD_3,KEY_DELETE,KEYPAD_6,KEY_EQUAL,0},
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{0,0,0,KEY_RIGHT,0,KEY_ENTER,KEYPAD_SLASH,KEYPAD_PERIOD,KEY_QUOTE,KEYPAD_PLUS,KEY_LEFT_BRACE,KEYPAD_MINUS,0}
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};
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// Load the modifier key matrix with key names at the correct row-column location.
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// A zero indicates no modifier key at that location.
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int modifier[rows_max][cols_max] = {
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{0,0,0,0,0,0,0,0,0,0,0,0,0},
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{MODIFIERKEY_LEFT_SHIFT,MODIFIERKEY_FN,MODIFIERKEY_RIGHT_SHIFT,0,0,0,0,0,0,0,0,0,MODIFIERKEY_LEFT_ALT},
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{0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,MODIFIERKEY_LEFT_CTRL,0,0,0,0,0,0,0},
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{0,0,0,0,0,MODIFIERKEY_RIGHT_ALT,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0,0,0,0,0}
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};
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// Load the media key matrix with Fn key names at the correct row-column location.
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// A zero indicates no media key at that location.
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int media[rows_max][cols_max] = {
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{0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0,0,0,0,0,0},
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{0,0,0,KEY_HOME,0,0,0,0,0,0,0,0,0},
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{0,0,0,KEY_PAGE_DOWN,0,0,0,0,0,0,0,0,0},
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{0,0,0,0,0,KEY_PAUSE,0,0,0,0,0,0,0},
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{0,0,0,0,0,KEY_PAGE_UP,0,0,0,0,0,KEY_F11,0},
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{0,0,0,0,0,0,0,0,0,KEY_F12,0,0,0},
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{0,0,0,KEY_END,0,0,0,0,0,0,0,0,0}
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};
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// Initialize the old_key matrix with one's.
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// 1 = key not pressed, 0 = key is pressed
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boolean old_key[rows_max][cols_max] = {
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{1,1,1,1,1,1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1,1,1,1,1,1},
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{1,1,1,1,1,1,1,1,1,1,1,1,1}
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};
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//
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// Define the Teensy LC I/O numbers (translated from the FPC pin #)
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// Row FPC pin # 04,06,08,10,12,14,16,18,20,22,24
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// Teensy I/O # 01,02,03,04,05,06,07,08,09,10,11
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int Row_IO[rows_max] = {1,2,3,4,5,6,7,8,9,10,11}; // Teensy LC I/O numbers for rows
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//
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// Column FPC pin # 01,03,05,07,09,11,13,15,17,19,21,23,26
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// Teensy I/O # 23,22,24,21,25,20,19,18,17,16,15,14,12
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int Col_IO[cols_max] = {23,22,24,21,25,20,19,18,17,16,15,14,12}; // Teensy LC I/O numbers for columns
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// Declare variables that will be used by functions
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boolean slots_full = LOW; // Goes high when slots 1 thru 6 contain normal keys
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// slot 1 thru slot 6 hold the normal key values to be sent over USB.
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int slot1 = 0; //value of 0 means the slot is empty and can be used.
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int slot2 = 0;
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int slot3 = 0;
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int slot4 = 0;
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int slot5 = 0;
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int slot6 = 0;
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//
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int mod_shift_l = 0; // These variables are sent over USB as modifier keys.
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int mod_shift_r = 0; // Each is either set to 0 or MODIFIER_ ...
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int mod_ctrl_l = 0;
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int mod_ctrl_r = 0;
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int mod_alt_l = 0;
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int mod_alt_r = 0;
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int mod_gui = 0;
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//
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// Function to load the key name into the first available slot
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void load_slot(int key) {
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if (!slot1) {
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slot1 = key;
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}
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else if (!slot2) {
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slot2 = key;
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}
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else if (!slot3) {
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slot3 = key;
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}
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else if (!slot4) {
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slot4 = key;
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}
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else if (!slot5) {
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slot5 = key;
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}
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else if (!slot6) {
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slot6 = key;
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}
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if (!slot1 || !slot2 || !slot3 || !slot4 || !slot5 || !slot6) {
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slots_full = LOW; // slots are not full
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}
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else {
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slots_full = HIGH; // slots are full
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}
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}
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//
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// Function to clear the slot that contains the key name
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void clear_slot(int key) {
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if (slot1 == key) {
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slot1 = 0;
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}
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else if (slot2 == key) {
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slot2 = 0;
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}
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else if (slot3 == key) {
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slot3 = 0;
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}
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else if (slot4 == key) {
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slot4 = 0;
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}
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else if (slot5 == key) {
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slot5 = 0;
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}
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else if (slot6 == key) {
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slot6 = 0;
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}
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if (!slot1 || !slot2 || !slot3 || !slot4 || !slot5 || !slot6) {
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slots_full = LOW; // slots are not full
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}
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else {
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slots_full = HIGH; // slots are full
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}
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}
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//
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// Function to load the modifier key name into the appropriate mod variable
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void load_mod(int m_key) {
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if (m_key == MODIFIERKEY_LEFT_SHIFT) {
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mod_shift_l = m_key;
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}
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else if (m_key == MODIFIERKEY_RIGHT_SHIFT) {
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mod_shift_r = m_key;
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}
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else if (m_key == MODIFIERKEY_LEFT_CTRL) {
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mod_ctrl_l = m_key;
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}
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else if (m_key == MODIFIERKEY_RIGHT_CTRL) {
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mod_ctrl_r = m_key;
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}
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else if (m_key == MODIFIERKEY_LEFT_ALT) {
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mod_alt_l = m_key;
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}
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else if (m_key == MODIFIERKEY_RIGHT_ALT) {
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mod_alt_r = m_key;
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}
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else if (m_key == MODIFIERKEY_GUI) {
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mod_gui = m_key;
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}
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}
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//
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// Function to load 0 into the appropriate mod variable
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void clear_mod(int m_key) {
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if (m_key == MODIFIERKEY_LEFT_SHIFT) {
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mod_shift_l = 0;
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}
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else if (m_key == MODIFIERKEY_RIGHT_SHIFT) {
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mod_shift_r = 0;
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}
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else if (m_key == MODIFIERKEY_LEFT_CTRL) {
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mod_ctrl_l = 0;
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}
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else if (m_key == MODIFIERKEY_RIGHT_CTRL) {
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mod_ctrl_r = 0;
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}
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else if (m_key == MODIFIERKEY_LEFT_ALT) {
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mod_alt_l = 0;
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}
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else if (m_key == MODIFIERKEY_RIGHT_ALT) {
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mod_alt_r = 0;
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}
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else if (m_key == MODIFIERKEY_GUI) {
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mod_gui = 0;
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}
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}
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//
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// Function to send the modifier keys over usb
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void send_mod() {
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Keyboard.set_modifier(mod_shift_l | mod_shift_r | mod_ctrl_l | mod_ctrl_r | mod_alt_l | mod_alt_r | mod_gui);
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Keyboard.send_now();
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}
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//
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// Function to send the normal keys in the 6 slots over usb
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void send_normals() {
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Keyboard.set_key1(slot1);
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Keyboard.set_key2(slot2);
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Keyboard.set_key3(slot3);
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Keyboard.set_key4(slot4);
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Keyboard.set_key5(slot5);
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Keyboard.set_key6(slot6);
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Keyboard.send_now();
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}
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//
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// Function to set a pin to high impedance (acts like open drain output)
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void go_z(int pin)
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{
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pinMode(pin, INPUT);
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digitalWrite(pin, HIGH);
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}
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//
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// Function to set a pin as an input with a pullup
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void go_pu(int pin)
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{
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pinMode(pin, INPUT_PULLUP);
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digitalWrite(pin, HIGH);
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}
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//
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// Function to send a pin to a logic low
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void go_0(int pin)
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{
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pinMode(pin, OUTPUT);
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digitalWrite(pin, LOW);
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}
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//
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// Function to send a pin to a logic high
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void go_1(int pin)
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{
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pinMode(pin, OUTPUT);
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digitalWrite(pin, HIGH);
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}
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//
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//----------------------------------Setup-------------------------------------------
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void setup() {
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for (int a = 0; a < cols_max; a++) { // loop thru all column pins
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go_pu(Col_IO[a]); // set each column pin as an input with a pullup
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}
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//
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for (int b = 0; b < rows_max; b++) { // loop thru all row pins
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go_z(Row_IO[b]); // set each row pin as a floating output
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}
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}
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//
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boolean Fn_pressed = HIGH; // Initialize Fn key to HIGH = "not pressed"
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extern volatile uint8_t keyboard_leds; // 8 bits sent from Pi to Teensy that give keyboard LED status. Caps lock is bit D1.
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//
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//---------------------------------Main Loop---------------------------------------------
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//
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void loop() {
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// Scan keyboard matrix with an outer loop that drives each row low and an inner loop that reads every column (with pull ups).
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|
||||||
// The routine looks at each key's present state (by reading the column input pin) and also the previous state from the last scan
|
|
||||||
// that was 30msec ago. The status of a key that was just pressed or just released is sent over USB and the state is saved in the old_key matrix.
|
|
||||||
// The keyboard keys will read as logic low if they are pressed (negative logic).
|
|
||||||
// The old_key matrix also uses negative logic (low=pressed).
|
|
||||||
//
|
|
||||||
for (int x = 0; x < rows_max; x++) { // loop thru the rows
|
|
||||||
go_0(Row_IO[x]); // Activate Row (send it low)
|
|
||||||
delayMicroseconds(10); // give the row time to go low and settle out
|
|
||||||
for (int y = 0; y < cols_max; y++) { // loop thru the columns
|
|
||||||
// **********Modifier keys including the Fn special case
|
|
||||||
if (modifier[x][y] != 0) { // check if modifier key exists
|
|
||||||
if (!digitalRead(Col_IO[y]) && (old_key[x][y])) { // Read column to see if key is low (pressed) and was previously not pressed
|
|
||||||
if (modifier[x][y] != MODIFIERKEY_FN) { // Exclude Fn modifier key
|
|
||||||
if (Fn_pressed) { // only send modifier keys if Fn key is not currently held down
|
|
||||||
load_mod(modifier[x][y]); // function reads which modifier key is pressed and loads it into the appropriate mod_... variable
|
|
||||||
send_mod(); // function sends the state of all modifier keys over usb including the one that just got pressed
|
|
||||||
old_key[x][y] = LOW; // Save state of key as "pressed"
|
|
||||||
}
|
|
||||||
else { // Fn key is already held down so check if right alt key is pressed and send print screen if yes
|
|
||||||
if (modifier[x][y] == MODIFIERKEY_RIGHT_ALT) {
|
|
||||||
Keyboard.press(KEY_PRINTSCREEN);
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_PRINTSCREEN);
|
|
||||||
delay(5);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
Fn_pressed = LOW; // Fn status variable is active low
|
|
||||||
old_key[x][y] = LOW; // old_key state is "pressed" (active low)
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else if (digitalRead(Col_IO[y]) && (!old_key[x][y])) { //check if key is not pressed and was previously pressed
|
|
||||||
if (modifier[x][y] != MODIFIERKEY_FN) { // Exclude Fn modifier key
|
|
||||||
clear_mod(modifier[x][y]); // function reads which modifier key was released and loads 0 into the appropriate mod_... variable
|
|
||||||
send_mod(); // function sends all mod's over usb including the one that just released
|
|
||||||
old_key[x][y] = HIGH; // Save state of key as "not pressed"
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
Fn_pressed = HIGH; // Fn is no longer active
|
|
||||||
old_key[x][y] = HIGH; // old_key state is "not pressed"
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
// ***********end of modifier section
|
|
||||||
//
|
|
||||||
// ***********Normal keys and media keys in this section
|
|
||||||
else if ((normal[x][y] != 0) || (media[x][y] != 0)) { // check if normal or media key exists at this location in the array
|
|
||||||
if (!digitalRead(Col_IO[y]) && (old_key[x][y]) && (!slots_full)) { // check if key pressed and not previously pressed and slots not full
|
|
||||||
old_key[x][y] = LOW; // Save state of key as "pressed"
|
|
||||||
if (Fn_pressed) { // Fn_pressed is active low so it is not pressed and normal key needs to be sent
|
|
||||||
if (keyboard_leds & 1) { // test if Num Lock is turned on
|
|
||||||
load_slot(numlock[x][y]); //update first available slot with key name from numlock matrix
|
|
||||||
send_normals(); // send all slots over USB including the key that just got pressed
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
load_slot(normal[x][y]); //update first available slot with key name from normal matrix
|
|
||||||
send_normals(); // send all slots over USB including the key that just got pressed
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else if (media[x][y] != 0) { // Fn is pressed so send media if a key exists in the matrix
|
|
||||||
Keyboard.press(media[x][y]); // media key is sent using keyboard press function per PJRC
|
|
||||||
delay(5); // delay 5 milliseconds before releasing to make sure it gets sent over USB
|
|
||||||
Keyboard.release(media[x][y]); // send media key release
|
|
||||||
}
|
|
||||||
else if (normal[x][y] == KEY_Z) { // Fn is pressed but no media key so check if KEY_Z is pressed
|
|
||||||
// if using this keyboard on a Raspberry Pi, comment out the following Alt code section and uncomment the unicode section
|
|
||||||
// *******Windows PC Alt Code sequence to give a backslash is Alt 92*******************************
|
|
||||||
Keyboard.press(MODIFIERKEY_LEFT_ALT); // Push and hold Left Alt
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEYPAD_9); // Push 9
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEYPAD_9); // Release 9
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEYPAD_2); // Push 2
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEYPAD_2); // Release 2
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(MODIFIERKEY_LEFT_ALT); // Release Left Alt
|
|
||||||
delay(5);
|
|
||||||
// *******Raspberry Pi Unicode sequence to give a backslash is Control+Shift+u 5c Enter*****************************
|
|
||||||
/* Keyboard.press(MODIFIERKEY_LEFT_CTRL); // Push and hold Left Control
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(MODIFIERKEY_LEFT_SHIFT); // Push and hold Left Shift
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEY_U); // Push u
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_U); // Release u
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(MODIFIERKEY_LEFT_CTRL); // Release Left Control
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(MODIFIERKEY_LEFT_SHIFT); // Release Left Shift
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEY_5); // Push 5
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_5); // Release 5
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEY_C); // Push c
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_C); // Release c
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEY_ENTER); // Push Enter
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_ENTER); // Release Enter
|
|
||||||
delay(5);
|
|
||||||
*/
|
|
||||||
}
|
|
||||||
else if (normal[x][y] == KEY_X) { // Fn is pressed but no media key so check if KEY_X is pressed
|
|
||||||
// if using this keyboard on a Raspberry Pi, comment out the following Alt code section and uncomment the unicode section
|
|
||||||
// *******Windows PC Alt Code sequence to give a | is Alt 124*******************************
|
|
||||||
Keyboard.press(MODIFIERKEY_LEFT_ALT); // Push and hold Left Alt
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEYPAD_1); // Push 1
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEYPAD_1); // Release 1
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEYPAD_2); // Push 2
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEYPAD_2); // Release 2
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEYPAD_4); // Push 4
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEYPAD_4); // Release 4
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(MODIFIERKEY_LEFT_ALT); // Release Left Alt
|
|
||||||
delay(5);
|
|
||||||
// *******Raspberry Pi Unicode sequence to give a | is Control+Shift+u 7c Enter*****************************
|
|
||||||
/* Keyboard.press(MODIFIERKEY_LEFT_CTRL); // Push and hold Left Control
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(MODIFIERKEY_LEFT_SHIFT); // Push and hold Left Shift
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEY_U); // Push u
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_U); // Release u
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(MODIFIERKEY_LEFT_CTRL); // Release Left Control
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(MODIFIERKEY_LEFT_SHIFT); // Release Left Shift
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEY_7); // Push 7
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_7); // Release 7
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEY_C); // Push c
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_C); // Release c
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEY_ENTER); // Push Enter
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_ENTER); // Release Enter
|
|
||||||
delay(5);
|
|
||||||
*/
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else if (digitalRead(Col_IO[y]) && (!old_key[x][y])) { //check if key is not pressed, but was previously pressed
|
|
||||||
old_key[x][y] = HIGH; // Save state of key as "not pressed"
|
|
||||||
if (Fn_pressed) { // Fn is not pressed
|
|
||||||
if (keyboard_leds & 1) { // test if Num Lock is turned on
|
|
||||||
clear_slot(numlock[x][y]); //clear slot with key name from numlock matrix
|
|
||||||
send_normals(); // send all slots over USB including the key that just got released
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
clear_slot(normal[x][y]); //clear slot with key name from normal matrix
|
|
||||||
send_normals(); // send all slots over USB including the key that just got released
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
// **************end of normal and media key section
|
|
||||||
//
|
|
||||||
}
|
|
||||||
go_z(Row_IO[x]); // De-activate Row (send it to hi-z)
|
|
||||||
}
|
|
||||||
//
|
|
||||||
// **********keyboard scan complete
|
|
||||||
//
|
|
||||||
// Turn on the LED on the Teensy for Caps Lock based on bit 1 in the keyboard_leds variable controlled by the USB host computer
|
|
||||||
//
|
|
||||||
if (keyboard_leds & 1<<1) { // mask off all bits but D1 and test if set
|
|
||||||
go_1(CAPS_LED); // turn on the LED
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
go_0(CAPS_LED); // turn off the LED
|
|
||||||
}
|
|
||||||
//
|
|
||||||
// Turn on the LED on the Teensy for Num Lock based on bit 0 in the keyboard_leds variable controlled by the USB host computer
|
|
||||||
//
|
|
||||||
if (keyboard_leds & 1) { // mask off all bits but D0 and test if set
|
|
||||||
go_1(NUM_LED); // turn on the Num Lock LED
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
go_0(NUM_LED); // turn off the Num Lock LED
|
|
||||||
}
|
|
||||||
//
|
|
||||||
delay(25); // The overall keyboard scanning rate is about 30ms
|
|
||||||
}
|
|
||||||
|
|
@ -1,501 +0,0 @@
|
||||||
/* Copyright 2019 Frank Adams
|
|
||||||
Licensed under the Apache License, Version 2.0 (the "License");
|
|
||||||
you may not use this file except in compliance with the License.
|
|
||||||
You may obtain a copy of the License at
|
|
||||||
http://www.apache.org/licenses/LICENSE-2.0
|
|
||||||
Unless required by applicable law or agreed to in writing, software
|
|
||||||
distributed under the License is distributed on an "AS IS" BASIS,
|
|
||||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
||||||
See the License for the specific language governing permissions and
|
|
||||||
limitations under the License.
|
|
||||||
*/
|
|
||||||
// This software implements a GRID 1550 Laptop Keyboard Controller using a Teensy LC
|
|
||||||
// for use with a Raspberry Pi or similar Linux computer.
|
|
||||||
//
|
|
||||||
// Revision History
|
|
||||||
// Initial Release Sept 15, 2019
|
|
||||||
// Revision Dec 8, 2019 - Increased delays from 5ms to 25ms for the Alt 92 key codes to give backslash
|
|
||||||
// Revision Dec 11, 2019 - Added Unicode method to give backslash and pipe since Alt codes don't work for Linux
|
|
||||||
//
|
|
||||||
#define MODIFIERKEY_FN 0x8f // give Fn key a fake HID code
|
|
||||||
#define CAPS_LED 13 // Teensy LED on IO#13 shows Caps-Lock
|
|
||||||
#define NUM_LED 0 // Teensy IO#0 shows Num-Lock (wire to anode of new LED)
|
|
||||||
//
|
|
||||||
const byte rows_max = 11; // sets the number of rows in the matrix
|
|
||||||
const byte cols_max = 13; // sets the number of columns in the matrix
|
|
||||||
//
|
|
||||||
// Load the normal key matrix with the Teensyduino key names
|
|
||||||
// described at www.pjrc.com/teensy/td_keyboard.html
|
|
||||||
// A zero indicates no normal key at that location.
|
|
||||||
int normal[rows_max][cols_max] = {
|
|
||||||
{0,0,0,0,0,KEY_F1,KEY_F2,KEY_F3,KEY_F4,KEY_F5,0,KEY_F9,0},
|
|
||||||
{0,0,0,0,KEY_SPACE,0,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,0,0,KEY_ESC,KEY_1,0,KEY_F6,KEY_F7,KEY_F8,KEY_F10,0},
|
|
||||||
{0,0,0,0,0,KEY_TAB,KEY_Q,KEY_W,KEY_2,KEY_3,0,KEY_6,0},
|
|
||||||
{0,0,0,0,0,KEY_CAPS_LOCK,KEY_A,KEY_S,KEY_E,KEY_4,KEY_5,KEY_7,0},
|
|
||||||
{0,0,0,KEY_LEFT,0,0,0,KEY_Z,KEY_F,KEY_D,KEY_8,KEY_9,0},
|
|
||||||
{0,0,0,KEY_DOWN,0,0,KEY_X,KEY_C,KEY_G,KEY_R,KEY_T,KEY_0,0},
|
|
||||||
{0,0,0,KEY_NUM_LOCK,0,KEY_SCROLL_LOCK,KEY_V,KEY_B,KEY_H,KEY_Y,KEY_U,KEY_MINUS,0},
|
|
||||||
{0,0,0,KEY_TILDE,0,KEY_UP,KEY_N,KEY_M,KEY_J,KEY_K,KEY_I,KEY_INSERT,0},
|
|
||||||
{0,0,0,KEY_BACKSLASH,0,KEY_RIGHT_BRACE,KEY_COMMA,KEY_BACKSPACE,KEY_L,KEY_DELETE,KEY_O,KEY_EQUAL,0},
|
|
||||||
{0,0,0,KEY_RIGHT,0,KEY_ENTER,KEY_SLASH,KEY_PERIOD,KEY_QUOTE,KEY_SEMICOLON,KEY_LEFT_BRACE,KEY_P,0}
|
|
||||||
|
|
||||||
};
|
|
||||||
// Load the numlock key matrix with key names at the correct row-column location.
|
|
||||||
// This matrix is the same as the normal matrix except for the number pad keys
|
|
||||||
// A zero indicates no numlock key at that location.
|
|
||||||
int numlock[rows_max][cols_max] = {
|
|
||||||
{0,0,0,0,0,KEY_F1,KEY_F2,KEY_F3,KEY_F4,KEY_F5,0,KEY_F9,0},
|
|
||||||
{0,0,0,0,KEY_SPACE,0,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,0,0,KEY_ESC,KEY_1,0,KEY_F6,KEY_F7,KEY_F8,KEY_F10,0},
|
|
||||||
{0,0,0,0,0,KEY_TAB,KEY_Q,KEY_W,KEY_2,KEY_3,0,KEY_6,0},
|
|
||||||
{0,0,0,0,0,KEY_CAPS_LOCK,KEY_A,KEY_S,KEY_E,KEY_4,KEY_5,KEYPAD_7,0},
|
|
||||||
{0,0,0,KEY_LEFT,0,0,0,KEY_Z,KEY_F,KEY_D,KEYPAD_8,KEYPAD_9,0},
|
|
||||||
{0,0,0,KEY_DOWN,0,0,KEY_X,KEY_C,KEY_G,KEY_R,KEY_T,KEYPAD_ASTERIX,0},
|
|
||||||
{0,0,0,KEY_NUM_LOCK,0,KEY_SCROLL_LOCK,KEY_V,KEY_B,KEY_H,KEY_Y,KEYPAD_4,KEY_MINUS,0},
|
|
||||||
{0,0,0,KEY_TILDE,0,KEY_UP,KEY_N,KEY_M,KEYPAD_1,KEYPAD_2,KEYPAD_5,KEY_INSERT,0},
|
|
||||||
{0,0,0,KEY_BACKSLASH,0,KEY_RIGHT_BRACE,KEYPAD_0,KEY_BACKSPACE,KEYPAD_3,KEY_DELETE,KEYPAD_6,KEY_EQUAL,0},
|
|
||||||
{0,0,0,KEY_RIGHT,0,KEY_ENTER,KEYPAD_SLASH,KEYPAD_PERIOD,KEY_QUOTE,KEYPAD_PLUS,KEY_LEFT_BRACE,KEYPAD_MINUS,0}
|
|
||||||
|
|
||||||
};
|
|
||||||
// Load the modifier key matrix with key names at the correct row-column location.
|
|
||||||
// A zero indicates no modifier key at that location.
|
|
||||||
int modifier[rows_max][cols_max] = {
|
|
||||||
{0,0,0,0,0,0,0,0,0,0,0,0,0},
|
|
||||||
{MODIFIERKEY_LEFT_SHIFT,MODIFIERKEY_FN,MODIFIERKEY_RIGHT_SHIFT,0,0,0,0,0,0,0,0,0,MODIFIERKEY_LEFT_ALT},
|
|
||||||
{0,0,0,0,0,0,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,0,0,0,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,0,0,0,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,0,0,MODIFIERKEY_LEFT_CTRL,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,0,0,MODIFIERKEY_RIGHT_ALT,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,0,0,0,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,0,0,0,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,0,0,0,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,0,0,0,0,0,0,0,0,0,0}
|
|
||||||
|
|
||||||
};
|
|
||||||
// Load the media key matrix with Fn key names at the correct row-column location.
|
|
||||||
// A zero indicates no media key at that location.
|
|
||||||
int media[rows_max][cols_max] = {
|
|
||||||
{0,0,0,0,0,0,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,0,0,0,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,0,0,0,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,0,0,0,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,0,0,0,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,KEY_HOME,0,0,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,KEY_PAGE_DOWN,0,0,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,0,0,KEY_PAUSE,0,0,0,0,0,0,0},
|
|
||||||
{0,0,0,0,0,KEY_PAGE_UP,0,0,0,0,0,KEY_F11,0},
|
|
||||||
{0,0,0,0,0,0,0,0,0,KEY_F12,0,0,0},
|
|
||||||
{0,0,0,KEY_END,0,0,0,0,0,0,0,0,0}
|
|
||||||
|
|
||||||
};
|
|
||||||
// Initialize the old_key matrix with one's.
|
|
||||||
// 1 = key not pressed, 0 = key is pressed
|
|
||||||
boolean old_key[rows_max][cols_max] = {
|
|
||||||
{1,1,1,1,1,1,1,1,1,1,1,1,1},
|
|
||||||
{1,1,1,1,1,1,1,1,1,1,1,1,1},
|
|
||||||
{1,1,1,1,1,1,1,1,1,1,1,1,1},
|
|
||||||
{1,1,1,1,1,1,1,1,1,1,1,1,1},
|
|
||||||
{1,1,1,1,1,1,1,1,1,1,1,1,1},
|
|
||||||
{1,1,1,1,1,1,1,1,1,1,1,1,1},
|
|
||||||
{1,1,1,1,1,1,1,1,1,1,1,1,1},
|
|
||||||
{1,1,1,1,1,1,1,1,1,1,1,1,1},
|
|
||||||
{1,1,1,1,1,1,1,1,1,1,1,1,1},
|
|
||||||
{1,1,1,1,1,1,1,1,1,1,1,1,1},
|
|
||||||
{1,1,1,1,1,1,1,1,1,1,1,1,1}
|
|
||||||
|
|
||||||
};
|
|
||||||
//
|
|
||||||
// Define the Teensy LC I/O numbers (translated from the FPC pin #)
|
|
||||||
// Row FPC pin # 04,06,08,10,12,14,16,18,20,22,24
|
|
||||||
// Teensy I/O # 01,02,03,04,05,06,07,08,09,10,11
|
|
||||||
int Row_IO[rows_max] = {1,2,3,4,5,6,7,8,9,10,11}; // Teensy LC I/O numbers for rows
|
|
||||||
//
|
|
||||||
// Column FPC pin # 01,03,05,07,09,11,13,15,17,19,21,23,26
|
|
||||||
// Teensy I/O # 23,22,24,21,25,20,19,18,17,16,15,14,12
|
|
||||||
int Col_IO[cols_max] = {23,22,24,21,25,20,19,18,17,16,15,14,12}; // Teensy LC I/O numbers for columns
|
|
||||||
|
|
||||||
// Declare variables that will be used by functions
|
|
||||||
boolean slots_full = LOW; // Goes high when slots 1 thru 6 contain normal keys
|
|
||||||
// slot 1 thru slot 6 hold the normal key values to be sent over USB.
|
|
||||||
int slot1 = 0; //value of 0 means the slot is empty and can be used.
|
|
||||||
int slot2 = 0;
|
|
||||||
int slot3 = 0;
|
|
||||||
int slot4 = 0;
|
|
||||||
int slot5 = 0;
|
|
||||||
int slot6 = 0;
|
|
||||||
//
|
|
||||||
int mod_shift_l = 0; // These variables are sent over USB as modifier keys.
|
|
||||||
int mod_shift_r = 0; // Each is either set to 0 or MODIFIER_ ...
|
|
||||||
int mod_ctrl_l = 0;
|
|
||||||
int mod_ctrl_r = 0;
|
|
||||||
int mod_alt_l = 0;
|
|
||||||
int mod_alt_r = 0;
|
|
||||||
int mod_gui = 0;
|
|
||||||
//
|
|
||||||
// Function to load the key name into the first available slot
|
|
||||||
void load_slot(int key) {
|
|
||||||
if (!slot1) {
|
|
||||||
slot1 = key;
|
|
||||||
}
|
|
||||||
else if (!slot2) {
|
|
||||||
slot2 = key;
|
|
||||||
}
|
|
||||||
else if (!slot3) {
|
|
||||||
slot3 = key;
|
|
||||||
}
|
|
||||||
else if (!slot4) {
|
|
||||||
slot4 = key;
|
|
||||||
}
|
|
||||||
else if (!slot5) {
|
|
||||||
slot5 = key;
|
|
||||||
}
|
|
||||||
else if (!slot6) {
|
|
||||||
slot6 = key;
|
|
||||||
}
|
|
||||||
if (!slot1 || !slot2 || !slot3 || !slot4 || !slot5 || !slot6) {
|
|
||||||
slots_full = LOW; // slots are not full
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
slots_full = HIGH; // slots are full
|
|
||||||
}
|
|
||||||
}
|
|
||||||
//
|
|
||||||
// Function to clear the slot that contains the key name
|
|
||||||
void clear_slot(int key) {
|
|
||||||
if (slot1 == key) {
|
|
||||||
slot1 = 0;
|
|
||||||
}
|
|
||||||
else if (slot2 == key) {
|
|
||||||
slot2 = 0;
|
|
||||||
}
|
|
||||||
else if (slot3 == key) {
|
|
||||||
slot3 = 0;
|
|
||||||
}
|
|
||||||
else if (slot4 == key) {
|
|
||||||
slot4 = 0;
|
|
||||||
}
|
|
||||||
else if (slot5 == key) {
|
|
||||||
slot5 = 0;
|
|
||||||
}
|
|
||||||
else if (slot6 == key) {
|
|
||||||
slot6 = 0;
|
|
||||||
}
|
|
||||||
if (!slot1 || !slot2 || !slot3 || !slot4 || !slot5 || !slot6) {
|
|
||||||
slots_full = LOW; // slots are not full
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
slots_full = HIGH; // slots are full
|
|
||||||
}
|
|
||||||
}
|
|
||||||
//
|
|
||||||
// Function to load the modifier key name into the appropriate mod variable
|
|
||||||
void load_mod(int m_key) {
|
|
||||||
if (m_key == MODIFIERKEY_LEFT_SHIFT) {
|
|
||||||
mod_shift_l = m_key;
|
|
||||||
}
|
|
||||||
else if (m_key == MODIFIERKEY_RIGHT_SHIFT) {
|
|
||||||
mod_shift_r = m_key;
|
|
||||||
}
|
|
||||||
else if (m_key == MODIFIERKEY_LEFT_CTRL) {
|
|
||||||
mod_ctrl_l = m_key;
|
|
||||||
}
|
|
||||||
else if (m_key == MODIFIERKEY_RIGHT_CTRL) {
|
|
||||||
mod_ctrl_r = m_key;
|
|
||||||
}
|
|
||||||
else if (m_key == MODIFIERKEY_LEFT_ALT) {
|
|
||||||
mod_alt_l = m_key;
|
|
||||||
}
|
|
||||||
else if (m_key == MODIFIERKEY_RIGHT_ALT) {
|
|
||||||
mod_alt_r = m_key;
|
|
||||||
}
|
|
||||||
else if (m_key == MODIFIERKEY_GUI) {
|
|
||||||
mod_gui = m_key;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
//
|
|
||||||
// Function to load 0 into the appropriate mod variable
|
|
||||||
void clear_mod(int m_key) {
|
|
||||||
if (m_key == MODIFIERKEY_LEFT_SHIFT) {
|
|
||||||
mod_shift_l = 0;
|
|
||||||
}
|
|
||||||
else if (m_key == MODIFIERKEY_RIGHT_SHIFT) {
|
|
||||||
mod_shift_r = 0;
|
|
||||||
}
|
|
||||||
else if (m_key == MODIFIERKEY_LEFT_CTRL) {
|
|
||||||
mod_ctrl_l = 0;
|
|
||||||
}
|
|
||||||
else if (m_key == MODIFIERKEY_RIGHT_CTRL) {
|
|
||||||
mod_ctrl_r = 0;
|
|
||||||
}
|
|
||||||
else if (m_key == MODIFIERKEY_LEFT_ALT) {
|
|
||||||
mod_alt_l = 0;
|
|
||||||
}
|
|
||||||
else if (m_key == MODIFIERKEY_RIGHT_ALT) {
|
|
||||||
mod_alt_r = 0;
|
|
||||||
}
|
|
||||||
else if (m_key == MODIFIERKEY_GUI) {
|
|
||||||
mod_gui = 0;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
//
|
|
||||||
// Function to send the modifier keys over usb
|
|
||||||
void send_mod() {
|
|
||||||
Keyboard.set_modifier(mod_shift_l | mod_shift_r | mod_ctrl_l | mod_ctrl_r | mod_alt_l | mod_alt_r | mod_gui);
|
|
||||||
Keyboard.send_now();
|
|
||||||
}
|
|
||||||
//
|
|
||||||
// Function to send the normal keys in the 6 slots over usb
|
|
||||||
void send_normals() {
|
|
||||||
Keyboard.set_key1(slot1);
|
|
||||||
Keyboard.set_key2(slot2);
|
|
||||||
Keyboard.set_key3(slot3);
|
|
||||||
Keyboard.set_key4(slot4);
|
|
||||||
Keyboard.set_key5(slot5);
|
|
||||||
Keyboard.set_key6(slot6);
|
|
||||||
Keyboard.send_now();
|
|
||||||
}
|
|
||||||
//
|
|
||||||
// Function to set a pin to high impedance (acts like open drain output)
|
|
||||||
void go_z(int pin)
|
|
||||||
{
|
|
||||||
pinMode(pin, INPUT);
|
|
||||||
digitalWrite(pin, HIGH);
|
|
||||||
}
|
|
||||||
//
|
|
||||||
// Function to set a pin as an input with a pullup
|
|
||||||
void go_pu(int pin)
|
|
||||||
{
|
|
||||||
pinMode(pin, INPUT_PULLUP);
|
|
||||||
digitalWrite(pin, HIGH);
|
|
||||||
}
|
|
||||||
//
|
|
||||||
// Function to send a pin to a logic low
|
|
||||||
void go_0(int pin)
|
|
||||||
{
|
|
||||||
pinMode(pin, OUTPUT);
|
|
||||||
digitalWrite(pin, LOW);
|
|
||||||
}
|
|
||||||
//
|
|
||||||
// Function to send a pin to a logic high
|
|
||||||
void go_1(int pin)
|
|
||||||
{
|
|
||||||
pinMode(pin, OUTPUT);
|
|
||||||
digitalWrite(pin, HIGH);
|
|
||||||
}
|
|
||||||
//
|
|
||||||
//----------------------------------Setup-------------------------------------------
|
|
||||||
void setup() {
|
|
||||||
for (int a = 0; a < cols_max; a++) { // loop thru all column pins
|
|
||||||
go_pu(Col_IO[a]); // set each column pin as an input with a pullup
|
|
||||||
}
|
|
||||||
//
|
|
||||||
for (int b = 0; b < rows_max; b++) { // loop thru all row pins
|
|
||||||
go_z(Row_IO[b]); // set each row pin as a floating output
|
|
||||||
}
|
|
||||||
}
|
|
||||||
//
|
|
||||||
boolean Fn_pressed = HIGH; // Initialize Fn key to HIGH = "not pressed"
|
|
||||||
extern volatile uint8_t keyboard_leds; // 8 bits sent from Pi to Teensy that give keyboard LED status. Caps lock is bit D1.
|
|
||||||
//
|
|
||||||
//---------------------------------Main Loop---------------------------------------------
|
|
||||||
//
|
|
||||||
void loop() {
|
|
||||||
// Scan keyboard matrix with an outer loop that drives each row low and an inner loop that reads every column (with pull ups).
|
|
||||||
// The routine looks at each key's present state (by reading the column input pin) and also the previous state from the last scan
|
|
||||||
// that was 30msec ago. The status of a key that was just pressed or just released is sent over USB and the state is saved in the old_key matrix.
|
|
||||||
// The keyboard keys will read as logic low if they are pressed (negative logic).
|
|
||||||
// The old_key matrix also uses negative logic (low=pressed).
|
|
||||||
//
|
|
||||||
for (int x = 0; x < rows_max; x++) { // loop thru the rows
|
|
||||||
go_0(Row_IO[x]); // Activate Row (send it low)
|
|
||||||
delayMicroseconds(10); // give the row time to go low and settle out
|
|
||||||
for (int y = 0; y < cols_max; y++) { // loop thru the columns
|
|
||||||
// **********Modifier keys including the Fn special case
|
|
||||||
if (modifier[x][y] != 0) { // check if modifier key exists
|
|
||||||
if (!digitalRead(Col_IO[y]) && (old_key[x][y])) { // Read column to see if key is low (pressed) and was previously not pressed
|
|
||||||
if (modifier[x][y] != MODIFIERKEY_FN) { // Exclude Fn modifier key
|
|
||||||
if (Fn_pressed) { // only send modifier keys if Fn key is not currently held down
|
|
||||||
load_mod(modifier[x][y]); // function reads which modifier key is pressed and loads it into the appropriate mod_... variable
|
|
||||||
send_mod(); // function sends the state of all modifier keys over usb including the one that just got pressed
|
|
||||||
old_key[x][y] = LOW; // Save state of key as "pressed"
|
|
||||||
}
|
|
||||||
else { // Fn key is already held down so check if right alt key is pressed and send print screen if yes
|
|
||||||
if (modifier[x][y] == MODIFIERKEY_RIGHT_ALT) {
|
|
||||||
Keyboard.press(KEY_PRINTSCREEN);
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_PRINTSCREEN);
|
|
||||||
delay(5);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
Fn_pressed = LOW; // Fn status variable is active low
|
|
||||||
old_key[x][y] = LOW; // old_key state is "pressed" (active low)
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else if (digitalRead(Col_IO[y]) && (!old_key[x][y])) { //check if key is not pressed and was previously pressed
|
|
||||||
if (modifier[x][y] != MODIFIERKEY_FN) { // Exclude Fn modifier key
|
|
||||||
clear_mod(modifier[x][y]); // function reads which modifier key was released and loads 0 into the appropriate mod_... variable
|
|
||||||
send_mod(); // function sends all mod's over usb including the one that just released
|
|
||||||
old_key[x][y] = HIGH; // Save state of key as "not pressed"
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
Fn_pressed = HIGH; // Fn is no longer active
|
|
||||||
old_key[x][y] = HIGH; // old_key state is "not pressed"
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
// ***********end of modifier section
|
|
||||||
//
|
|
||||||
// ***********Normal keys and media keys in this section
|
|
||||||
else if ((normal[x][y] != 0) || (media[x][y] != 0)) { // check if normal or media key exists at this location in the array
|
|
||||||
if (!digitalRead(Col_IO[y]) && (old_key[x][y]) && (!slots_full)) { // check if key pressed and not previously pressed and slots not full
|
|
||||||
old_key[x][y] = LOW; // Save state of key as "pressed"
|
|
||||||
if (Fn_pressed) { // Fn_pressed is active low so it is not pressed and normal key needs to be sent
|
|
||||||
if (keyboard_leds & 1) { // test if Num Lock is turned on
|
|
||||||
load_slot(numlock[x][y]); //update first available slot with key name from numlock matrix
|
|
||||||
send_normals(); // send all slots over USB including the key that just got pressed
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
load_slot(normal[x][y]); //update first available slot with key name from normal matrix
|
|
||||||
send_normals(); // send all slots over USB including the key that just got pressed
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else if (media[x][y] != 0) { // Fn is pressed so send media if a key exists in the matrix
|
|
||||||
Keyboard.press(media[x][y]); // media key is sent using keyboard press function per PJRC
|
|
||||||
delay(5); // delay 5 milliseconds before releasing to make sure it gets sent over USB
|
|
||||||
Keyboard.release(media[x][y]); // send media key release
|
|
||||||
}
|
|
||||||
else if (normal[x][y] == KEY_Z) { // Fn is pressed but no media key so check if KEY_Z is pressed
|
|
||||||
// if using this keyboard on a Windows PC, uncomment the following Alt code section and comment out the unicode section
|
|
||||||
// *******Windows PC Alt Code sequence to give a backslash is Alt 92*******************************
|
|
||||||
/* Keyboard.press(MODIFIERKEY_LEFT_ALT); // Push and hold Left Alt
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEYPAD_9); // Push 9
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEYPAD_9); // Release 9
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEYPAD_2); // Push 2
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEYPAD_2); // Release 2
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(MODIFIERKEY_LEFT_ALT); Release Left Alt
|
|
||||||
delay(5);
|
|
||||||
*/
|
|
||||||
// *******Raspberry Pi Unicode sequence to give a backslash is Control+Shift+u 5c Enter*****************************
|
|
||||||
Keyboard.press(MODIFIERKEY_LEFT_CTRL); // Push and hold Left Control
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(MODIFIERKEY_LEFT_SHIFT); // Push and hold Left Shift
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEY_U); // Push u
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_U); // Release u
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(MODIFIERKEY_LEFT_CTRL); // Release Left Control
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(MODIFIERKEY_LEFT_SHIFT); // Release Left Shift
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEY_5); // Push 5
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_5); // Release 5
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEY_C); // Push c
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_C); // Release c
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEY_ENTER); // Push Enter
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_ENTER); // Release Enter
|
|
||||||
delay(5);
|
|
||||||
}
|
|
||||||
else if (normal[x][y] == KEY_X) { // Fn is pressed but no media key so check if KEY_X is pressed
|
|
||||||
// if using this keyboard on a Windows PC, uncomment the following Alt code section and comment out the unicode section
|
|
||||||
// *******Windows PC Alt Code sequence to give a | is Alt 124*******************************
|
|
||||||
/* Keyboard.press(MODIFIERKEY_LEFT_ALT); // Push and hold Left Alt
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEYPAD_1); // Push 1
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEYPAD_1); // Release 1
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEYPAD_2); // Push 2
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEYPAD_2); // Release 2
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEYPAD_4); // Push 4
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEYPAD_4); // Release 4
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(MODIFIERKEY_LEFT_ALT); Release Left Alt
|
|
||||||
delay(5);
|
|
||||||
*/
|
|
||||||
// *******Raspberry Pi Unicode sequence to give a | is Control+Shift+u 7c Enter*****************************
|
|
||||||
Keyboard.press(MODIFIERKEY_LEFT_CTRL); // Push and hold Left Control
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(MODIFIERKEY_LEFT_SHIFT); // Push and hold Left Shift
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEY_U); // Push u
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_U); // Release u
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(MODIFIERKEY_LEFT_CTRL); // Release Left Control
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(MODIFIERKEY_LEFT_SHIFT); // Release Left Shift
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEY_7); // Push 7
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_7); // Release 7
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEY_C); // Push c
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_C); // Release c
|
|
||||||
delay(5);
|
|
||||||
Keyboard.press(KEY_ENTER); // Push Enter
|
|
||||||
delay(5);
|
|
||||||
Keyboard.release(KEY_ENTER); // Release Enter
|
|
||||||
delay(5);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else if (digitalRead(Col_IO[y]) && (!old_key[x][y])) { //check if key is not pressed, but was previously pressed
|
|
||||||
old_key[x][y] = HIGH; // Save state of key as "not pressed"
|
|
||||||
if (Fn_pressed) { // Fn is not pressed
|
|
||||||
if (keyboard_leds & 1) { // test if Num Lock is turned on
|
|
||||||
clear_slot(numlock[x][y]); //clear slot with key name from numlock matrix
|
|
||||||
send_normals(); // send all slots over USB including the key that just got released
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
clear_slot(normal[x][y]); //clear slot with key name from normal matrix
|
|
||||||
send_normals(); // send all slots over USB including the key that just got released
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
// **************end of normal and media key section
|
|
||||||
//
|
|
||||||
}
|
|
||||||
go_z(Row_IO[x]); // De-activate Row (send it to hi-z)
|
|
||||||
}
|
|
||||||
//
|
|
||||||
// **********keyboard scan complete
|
|
||||||
//
|
|
||||||
// Turn on the LED on the Teensy for Caps Lock based on bit 1 in the keyboard_leds variable controlled by the USB host computer
|
|
||||||
//
|
|
||||||
if (keyboard_leds & 1<<1) { // mask off all bits but D1 and test if set
|
|
||||||
go_1(CAPS_LED); // turn on the LED
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
go_0(CAPS_LED); // turn off the LED
|
|
||||||
}
|
|
||||||
//
|
|
||||||
// Turn on the LED on the Teensy for Num Lock based on bit 0 in the keyboard_leds variable controlled by the USB host computer
|
|
||||||
//
|
|
||||||
if (keyboard_leds & 1) { // mask off all bits but D0 and test if set
|
|
||||||
go_1(NUM_LED); // turn on the Num Lock LED
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
go_0(NUM_LED); // turn off the Num Lock LED
|
|
||||||
}
|
|
||||||
//
|
|
||||||
delay(25); // The overall keyboard scanning rate is about 30ms
|
|
||||||
}
|
|
||||||
|
|
@ -1,156 +0,0 @@
|
||||||
/* Copyright 2019 Frank Adams
|
|
||||||
Licensed under the Apache License, Version 2.0 (the "License");
|
|
||||||
you may not use this file except in compliance with the License.
|
|
||||||
You may obtain a copy of the License at
|
|
||||||
http://www.apache.org/licenses/LICENSE-2.0
|
|
||||||
Unless required by applicable law or agreed to in writing, software
|
|
||||||
distributed under the License is distributed on an "AS IS" BASIS,
|
|
||||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
||||||
See the License for the specific language governing permissions and
|
|
||||||
limitations under the License.
|
|
||||||
*/
|
|
||||||
// This software reads the 6 logic signals from a Grid 1550 laptop "mouse" and converts it to USB.
|
|
||||||
// The Grid 1550 laptop has a shaft in place of a touchpad. The shaft is rolled forward or backwards
|
|
||||||
// which moves the cursor up or down. Likewise the entire shaft can be slid left or right to move the cursor left or right.
|
|
||||||
// There are two buttons on the left of the shaft and two buttons on the right of the shaft.
|
|
||||||
// The two buttons closest to the shaft act like normal left mouse buttons.
|
|
||||||
// The two buttons furthest from the shaft are right mouse buttons.
|
|
||||||
// Pins 3 and 4 are active for up/down movement. Pins 5 and 6 are active for left/right movement.
|
|
||||||
// The pin pairs use a rotational encoding scheme that is described in the following wiki page:
|
|
||||||
// https://en.wikipedia.org/wiki/Rotary_encoder
|
|
||||||
//
|
|
||||||
// I/O pins 0 & 1 are used to enable/disable the mouse and to adjust its speed
|
|
||||||
// I/O 1 I/O 0 Result
|
|
||||||
// High High Count by 1
|
|
||||||
// High Low Count by 2
|
|
||||||
// Low High Count by 3
|
|
||||||
// Low Low Mouse disabled
|
|
||||||
//
|
|
||||||
// Revision History
|
|
||||||
// Rev 1.0 - Nov 3, 2019 - Original Release
|
|
||||||
// Rev 1.1 - Nov 4, 2019 - Fixed swapped mouse buttons
|
|
||||||
// Rev 1.2 - Nov 4, 2019 - Added speed controls
|
|
||||||
//
|
|
||||||
#include <TimerOne.h> // used for making a 24msec timer
|
|
||||||
//
|
|
||||||
#define SPEED_PIN0 0 // Input with pullup - Can be driven by the Teensy controlling the keyboard
|
|
||||||
#define SPEED_PIN1 1 // Input with pullup - Can be driven by the Teensy controlling the keyboard
|
|
||||||
// Connect the Teensy I/O's 3 thru 8 to the Grid mouse connector pins 3 thru 8
|
|
||||||
#define MOUSE_PIN3 3 // Left/Right Encoder signal A
|
|
||||||
#define MOUSE_PIN4 4 // Left/Right Encoder signal B
|
|
||||||
#define MOUSE_PIN5 5 // Up/Down Encoder signal A
|
|
||||||
#define MOUSE_PIN6 6 // Up/Down Encoder signal B
|
|
||||||
#define MOUSE_PIN7 7 // Right Mouse Button
|
|
||||||
#define MOUSE_PIN8 8 // Left Mouse Button
|
|
||||||
//
|
|
||||||
// Declare and initialize variables
|
|
||||||
boolean left_button = 0; // on/off variable for left button, 1 = pushed
|
|
||||||
boolean right_button = 0; // on/off variable for right button, 1 = pushed
|
|
||||||
boolean old_left_button = 0; // on/off variable for left button from the previous cycle
|
|
||||||
boolean old_right_button = 0; // on/off variable for right button from the previous cycle
|
|
||||||
boolean button_change = 0; // Shows when the left or right buttons have changed, 1 = change
|
|
||||||
volatile int8_t x_count = 0; // left/right movement. 8 bit signed. Volatile because used in ISR
|
|
||||||
volatile int8_t y_count = 0; // up or down movement. 8 bit signed. Volatile because used in ISR
|
|
||||||
boolean x_A; // holds the state of pin 3
|
|
||||||
boolean x_A_Last; // holds the previous state of pin 3
|
|
||||||
boolean y_A; // holds the state of pin 5
|
|
||||||
boolean y_A_Last; // holds the previous state of pin 5
|
|
||||||
boolean mouse_on = 1; // high when mouse is turned on, low when turned off
|
|
||||||
boolean speed0 = 1; // result of reading pin 0
|
|
||||||
boolean speed1 = 1; // result of reading pin 1
|
|
||||||
int8_t count_by = 1; // value to add or substract from x & y counters (1, 2, or 3 depending on SPEED_PIN0 & 1)
|
|
||||||
//
|
|
||||||
// USB Interrupt Service Routine (ISR) Activates every 24msec when timer1 ticks
|
|
||||||
void sendUSB(void) {
|
|
||||||
// send the x and y data back to the host via usb if either counter is non-zero.
|
|
||||||
// if the mouse is turned off, the counters can't increment so they will both be zero.
|
|
||||||
if ((x_count != 0x00) || (y_count != 0x00)) {
|
|
||||||
Mouse.move(x_count,y_count);
|
|
||||||
x_count = 0; // clear the x and y counters
|
|
||||||
y_count = 0;
|
|
||||||
}
|
|
||||||
// read the touchpad left and right buttons
|
|
||||||
if (!digitalRead(MOUSE_PIN7)) { // check if right button is low (low = pushed)
|
|
||||||
right_button = 1; // save state of button
|
|
||||||
}
|
|
||||||
else { // clear right button
|
|
||||||
right_button = 0; // save state of button
|
|
||||||
}
|
|
||||||
if (!digitalRead(MOUSE_PIN8)) { // check if left button is low (low = pushed)
|
|
||||||
left_button = 1; // save state of button
|
|
||||||
}
|
|
||||||
else { // clear left button
|
|
||||||
left_button = 0; // save state of button
|
|
||||||
}
|
|
||||||
// Determine if the left or right mouse buttons have changed (using XOR) since the last cycle
|
|
||||||
button_change = (left_button ^ old_left_button) | (right_button ^ old_right_button);
|
|
||||||
// Don't send button status if there's no change since last time or if the mouse is turned off.
|
|
||||||
if (button_change && mouse_on){
|
|
||||||
Mouse.set_buttons(left_button, 0, right_button); // send button status over USB
|
|
||||||
}
|
|
||||||
old_left_button = left_button; // remember button status for the next cycle
|
|
||||||
old_right_button = right_button;
|
|
||||||
}
|
|
||||||
// *****************Setup the timer and input pins***********************************************
|
|
||||||
void setup() {
|
|
||||||
Timer1.initialize(24000); // 24msec timer
|
|
||||||
Timer1.attachInterrupt(sendUSB); // sendUSB function will run every 24 milliseconds
|
|
||||||
pinMode(SPEED_PIN0, INPUT_PULLUP); // both speed controls are inputs with pullups
|
|
||||||
pinMode(SPEED_PIN1, INPUT_PULLUP); // if left floating, both will be 1's to give count_by 1
|
|
||||||
pinMode(MOUSE_PIN3, INPUT); // teensy I/O 3 is an input for left/right signal A
|
|
||||||
pinMode(MOUSE_PIN4, INPUT); // teensy I/O 4 is an input for left/right signal B
|
|
||||||
pinMode(MOUSE_PIN5, INPUT); // teensy I/O 5 is an input for up/down signal A
|
|
||||||
pinMode(MOUSE_PIN6, INPUT); // teensy I/O 6 is an input for up/down signal B
|
|
||||||
pinMode(MOUSE_PIN7, INPUT); // teensy I/O 7 is an input for right mouse button
|
|
||||||
pinMode(MOUSE_PIN8, INPUT); // teensy I/O 8 is an input for left mouse button
|
|
||||||
x_A_Last = digitalRead(MOUSE_PIN3); // save logic state of pin 3
|
|
||||||
y_A_Last = digitalRead(MOUSE_PIN5); // save logic state of pin 5
|
|
||||||
}
|
|
||||||
// *********Main Loop constantly watches for activity on pins 3 and 5 plus status on pins 0 & 1*********
|
|
||||||
void loop() {
|
|
||||||
// adjust the x counter if pin 3 changes (i.e. has an up or down edge)
|
|
||||||
x_A = digitalRead(MOUSE_PIN3); // Read the current state of pin 3
|
|
||||||
if (x_A != x_A_Last){ // If pin 3 is different than the previous pin 3, an edge has occured.
|
|
||||||
noInterrupts(); // disable the timer interrupt while modifying the x counter
|
|
||||||
if (digitalRead(MOUSE_PIN4) != x_A) { // see if pin 4 equals pin 3
|
|
||||||
x_count = x_count + count_by; // pin 3 is ahead of pin 4 so move the cursor to the right by increasing the counter
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
x_count = x_count - count_by; // pin 3 is behind pin 4 so move the cursor to the left by decreasing the counter
|
|
||||||
}
|
|
||||||
interrupts(); // enable the timer interrupt
|
|
||||||
}
|
|
||||||
x_A_Last = x_A; // save the state of pin 3 for the next loop
|
|
||||||
// adjust the y counter if pin 5 has an up or down edge
|
|
||||||
y_A = digitalRead(MOUSE_PIN5); // Reads the current state of pin 5
|
|
||||||
if (y_A != y_A_Last){ // If pin 5 is different than the previous pin 5, an edge has occured.
|
|
||||||
noInterrupts(); // disable the timer interrupt while modifying the y counter
|
|
||||||
if (digitalRead(MOUSE_PIN6) != y_A) { // see if pin 6 equals pin 5
|
|
||||||
y_count = y_count + count_by; // pin 5 is ahead of pin 6 so move the cursor down by increasing the counter
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
y_count = y_count - count_by; // pin 5 is behind pin 6 so move the cursor up by decreasing the counter
|
|
||||||
}
|
|
||||||
interrupts(); // enable the timer interrupt
|
|
||||||
}
|
|
||||||
y_A_Last = y_A; // save the state of pin 5 for the next loop
|
|
||||||
// Read speed pins 0 & 1 to adjust count and on/off control
|
|
||||||
speed0 = digitalRead(SPEED_PIN0);
|
|
||||||
speed1 = digitalRead(SPEED_PIN1);
|
|
||||||
if (speed0 && speed1) { // this is the high & high case
|
|
||||||
count_by = 1; // slow speed movement
|
|
||||||
mouse_on = 1; // turn mouse on
|
|
||||||
}
|
|
||||||
else if (!speed0 && speed1) { // this is the low & high case
|
|
||||||
count_by = 2; // middle speed movement
|
|
||||||
mouse_on = 1; // turn mouse on
|
|
||||||
}
|
|
||||||
else if (speed0 && !speed1){ // this is the high & low case
|
|
||||||
count_by = 3; // high speed movement
|
|
||||||
mouse_on = 1; // turn mouse on
|
|
||||||
}
|
|
||||||
else { // this is the low & low case
|
|
||||||
count_by = 0; // no movement
|
|
||||||
mouse_on = 0; // turn mouse off
|
|
||||||
}
|
|
||||||
}
|
|
||||||
Loading…
Reference in a new issue