From 2e1e656c8285d88671a3eacfcf3b00d71a12ae90 Mon Sep 17 00:00:00 2001 From: Frank Adams <33405607+thedalles77@users.noreply.github.com> Date: Tue, 23 Nov 2021 19:35:32 -0800 Subject: [PATCH] Delete Logitech_K120.ino --- .../Logitech_K120/Logitech_K120.ino | 413 ------------------ 1 file changed, 413 deletions(-) delete mode 100644 Example_Keyboards/Logitech_K120/Logitech_K120.ino diff --git a/Example_Keyboards/Logitech_K120/Logitech_K120.ino b/Example_Keyboards/Logitech_K120/Logitech_K120.ino deleted file mode 100644 index 77a0ac4..0000000 --- a/Example_Keyboards/Logitech_K120/Logitech_K120.ino +++ /dev/null @@ -1,413 +0,0 @@ -/* Copyright 2021 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 Logitech K120 Keyboard Controller using a Teensy 4.1 wired to the 2 FPC cables, -// (there is no circuit board). The standard USB keyboard code would sometimes miss a key press when scanning -// at 30 msec. Changing the scan rate to under 1 msec allowed all key presses to be seen but sometimes -// two presses would be seen. A debounce/noise filter function called “read_key” has been added to the -// code. This function will read a key 5 times in a row with a fixed delay between reads. The function -// returns a key-down or key-up result by majority voting. -// -// Revision History -// Initial Release Oct 15, 2021 - Added debounce/noise filter when reading the keyboard -// -#define MODIFIERKEY_FN 0x8f // give Fn key a HID code -#define CAPS_LED 13 // Teensy LED shows Caps-Lock -// -const byte rows_max = 18; // sets the number of rows in the matrix -const byte cols_max = 8; // 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] = { - {0,0,0,0,0,0,0,0}, - {KEY_C,KEY_X,KEY_DELETE,0,KEY_BACKSLASH,KEYPAD_PERIOD,KEYPAD_9,KEY_SPACE}, - {KEY_SLASH,KEY_O,KEY_P,KEYPAD_1,KEY_D,KEY_QUOTE,KEY_RIGHT,KEY_PAUSE}, - {0,0,0,0,0,0,0,0}, - {KEY_HOME,KEY_Y,KEY_T,KEY_R,KEY_6,KEY_5,KEYPAD_PLUS,KEY_BACKSPACE}, - {KEY_9,KEY_8,KEY_M,KEY_EQUAL,KEYPAD_3,KEY_COMMA,KEY_7,KEY_V}, - {KEY_SLASH,KEY_PAGE_DOWN,KEY_ENTER,KEY_NUM_LOCK,KEY_CAPS_LOCK,KEYPAD_0,KEY_END,0x65}, - {KEY_MINUS,KEY_TAB,KEY_H,KEY_Q,KEY_G,KEY_4,KEY_3,0}, - {0,0,0,0,0,0,0,0}, - {KEY_0,KEY_F,KEY_N,KEY_MINUS,KEY_F2,KEY_SEMICOLON,KEYPAD_2,KEY_Z}, - {0,KEY_F5,KEY_J,KEY_L,KEY_LEFT_BRACE,KEY_K,KEY_PERIOD,KEY_BACKSLASH}, - {KEY_F7,0,KEY_LEFT,KEY_A,0,KEYPAD_5,KEY_F6,KEYPAD_7}, - {KEYPAD_4,KEY_I,KEY_E,KEY_F11,KEY_U,KEY_UP,KEY_F12,KEY_INSERT}, - {0,0,0,0,0,0,0,0}, - {KEYPAD_ASTERIX,KEY_1,KEY_RIGHT_BRACE,KEY_PAGE_UP,KEY_B,KEY_TILDE,KEY_2,KEY_SCROLL_LOCK}, - {0,0,KEYPAD_6,KEY_DOWN,KEY_F3,KEY_F4,KEY_S,KEY_PRINTSCREEN}, - {KEY_F8,KEYPAD_8,KEY_ESC,KEY_F10,KEY_F1,KEY_W,KEY_F9,KEYPAD_ENTER}, - {0,0,0,0,0,0,0,0} -}; -// 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,MODIFIERKEY_RIGHT_SHIFT,0,0,MODIFIERKEY_SHIFT,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_RIGHT_GUI}, - {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_GUI,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_CTRL,0,0,MODIFIERKEY_RIGHT_CTRL,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_RIGHT_ALT,0,0,MODIFIERKEY_ALT,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}, - {0,0,0,0,0,0,0,0}, - {0,0,0,0,0,0,0,0}, - {0,KEY_SYSTEM_SLEEP,0,0,0,0,0,0}, - {0,0,0,0,0,0,0,0}, - {0,0,0,0,KEY_SCROLL_LOCK,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} -}; -// 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}, - {1,1,1,1,1,1,1,1} -}; -// -// Define the Teensy 4.1 I/O numbers (translated from the FPC pin #) -// Row FPC pin # 02,03,04,05,06,07,08,09,10,11,12,13,14,15,16,17,18 -// Teensy I/O # 00,22,01,21,02,20,03,19,04,18,05,17,06,29,07,31,08 -//int Row_IO[rows_max] = {0,22,1,21,2,20,3,19,4,18,5,17,6,29,7,31,8}; // Teensy 4.0 I/O numbers for rows -int Row_IO[rows_max] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 16, 17, 24, 25, 26}; // Teensy 4.0 I/O numbers for rows -// -// Column FPC pin # 19,20,21,22,23,24,25,26 -// Teensy I/O # 33,09,32,10,30,11,28,12 -//int Col_IO[cols_max] = {33,9,32,10,30,11,28,12}; // Teensy 4.1 I/O numbers for columns -int Col_IO[cols_max] = {27, 28, 29, 30, 31, 32, 14, 15}; // Teensy 4.1 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); -} -// -// Function to read a key multiple times and vote to filter any noise/debounce -int read_key(int y) { - int read1 = digitalRead(Col_IO[y]); - delayMicroseconds(2); // increase delay between reads if necessary to filter noise or key bounce - int read2 = digitalRead(Col_IO[y]); - delayMicroseconds(2); - int read3 = digitalRead(Col_IO[y]); - delayMicroseconds(2); - int read4 = digitalRead(Col_IO[y]); - delayMicroseconds(2); - int read5 = digitalRead(Col_IO[y]); - int readsum = read1 + read2 + read3 + read4 + read5; // count how many 1's were read - if (readsum <= 2) { // 0, 1, or 2 means there are more low reads than high reads - return 0; // key is pressed - } - else { - return 1; // key is not pressed - } -} -// -//----------------------------------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 Host 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(15); // 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 at this location in the array (a non-zero value) - if (!read_key(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 - 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_pressed = LOW; // Fn status variable is active low - old_key[x][y] = LOW; // old_key state is "pressed" (active low) - } - } - else if (read_key(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 (!read_key(y) && (old_key[x][y]) && (!slots_full)) { // check if key is pressed and was 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 - load_slot(normal[x][y]); //update first available slot with normal key name - 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 - delayMicroseconds(300); - Keyboard.release(media[x][y]); // send media key release - } - } - else if (read_key(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 - clear_slot(normal[x][y]); //clear the slot that contains the normal key name - send_normals(); // send all slots over USB including the key that was just 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 - } -// - delayMicroseconds(50); // The overall keyboard scanning rate is about 30ms -}