diff --git a/Example_Keyboards/IBM Thinkpad 380ED/IBM_380.ino b/Example_Keyboards/IBM Thinkpad 380ED/IBM_380.ino new file mode 100644 index 0000000..d26e88c --- /dev/null +++ b/Example_Keyboards/IBM Thinkpad 380ED/IBM_380.ino @@ -0,0 +1,526 @@ +/* Copyright 2020 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 an IBM Thinkpad 380ED Laptop USB Keyboard/Trackpoint Controller. +// It uses a Teensy 3.2 on a custom FPC connector board that also has the amplifiers for the +// trackpoint that are fed into the Teensy ADC. +// +// Revision History +// Initial Release May 16, 2020 +// +#define MODIFIERKEY_FN 0x8f // give Fn key a fake HID code +#define CAPS_LED 14 +#define NUM_LED 15 +#define SCRL_LED 16 +#define HEARTBEAT_LED 13 +#define TP_LEFT 20 // Trackpoint mouse buttons connected to Teensy 3.2 I/O's +#define TP_RIGHT 5 +#define TP_RETURN 30 +// +const byte rows_max = 17; // sets the number of rows in the matrix +const byte cols_max = 9; // 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] = { + {KEY_ESC,KEY_TAB,KEY_TILDE,KEY_1,0,0,KEY_Z,KEY_A,KEY_Q}, + {0,KEY_CAPS_LOCK,KEY_F1,KEY_2,0,0,KEY_X,KEY_S,KEY_W}, + {0,0,0,0,0,0,0,0,0}, + {KEY_G,KEY_T,KEY_5,KEY_4,KEY_B,0,KEY_V,KEY_F,KEY_R}, + {KEY_H,KEY_Y,KEY_6,KEY_7,KEY_N,0,KEY_M,KEY_J,KEY_U}, + {KEY_F6,KEY_LEFT_BRACE,KEY_EQUAL,KEY_8,0,0,KEY_COMMA,KEY_K,KEY_I}, + {KEY_UP,0,KEY_HOME,KEY_END,KEY_LEFT,0,KEY_PAUSE,0,0}, + {0,0,KEY_PAGE_UP,KEY_PAGE_DOWN,0,0,0,0,0}, + {KEY_F4,KEY_F3,KEY_F2,KEY_3,0,0,KEY_C,KEY_D,KEY_E}, + {KEY_QUOTE,KEY_LEFT_BRACE,KEY_MINUS,KEY_0,KEY_SLASH,0,0,KEY_SEMICOLON,KEY_P}, + {KEY_F5,KEY_BACKSPACE,KEY_F9,KEY_F10,KEY_SPACE,0,KEY_ENTER,KEY_BACKSLASH,0}, + {0,0,KEY_DELETE,KEY_F11,KEY_DOWN,0,0,0,0}, + {0,0,0,KEY_PRINTSCREEN,0,0,0,0,KEY_NUM_LOCK}, + {0,0,KEY_INSERT,KEY_F12,KEY_RIGHT,0,0,0,0}, + {0,0,0,0,0,0,0,0,0}, + {0,0,0,0,0,0,0,0,0}, + {0,KEY_F7,KEY_F8,KEY_9,0,0,KEY_PERIOD,KEY_L,KEY_O} +}; +// 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] = { + {KEY_ESC,KEY_TAB,KEY_TILDE,KEY_1,0,0,KEY_Z,KEY_A,KEY_Q}, + {0,KEY_CAPS_LOCK,KEY_F1,KEY_2,0,0,KEY_X,KEY_S,KEY_W}, + {0,0,0,0,0,0,0,0,0}, + {KEY_G,KEY_T,KEY_5,KEY_4,KEY_B,0,KEY_V,KEY_F,KEY_R}, + {KEY_H,KEY_Y,KEY_6,KEYPAD_7,KEY_N,0,KEYPAD_0,KEYPAD_1,KEYPAD_4}, + {KEY_F6,KEY_LEFT_BRACE,KEY_EQUAL,KEYPAD_8,0,0,KEY_COMMA,KEYPAD_2,KEYPAD_5}, + {KEY_UP,0,KEY_HOME,KEY_END,KEY_LEFT,0,KEY_PAUSE,0,0}, + {0,0,KEY_UP,KEY_DOWN,0,0,0,0,0}, + {KEY_F4,KEY_F3,KEY_F2,KEY_3,0,0,KEY_C,KEY_D,KEY_E}, + {KEY_QUOTE,KEY_LEFT_BRACE,KEY_MINUS,KEYPAD_SLASH,KEYPAD_PLUS,0,0,KEYPAD_MINUS,KEYPAD_ASTERIX}, + {KEY_F5,KEY_BACKSPACE,KEY_F9,KEY_F10,KEY_SPACE,0,KEY_ENTER,KEY_BACKSLASH,0}, + {0,0,KEY_DELETE,KEY_F11,KEY_DOWN,0,0,0,0}, + {0,0,0,KEY_PRINTSCREEN,0,0,0,0,KEY_NUM_LOCK}, + {0,0,KEY_INSERT,KEY_F12,KEY_RIGHT,0,0,0,0}, + {0,0,0,0,0,0,0,0,0}, + {0,0,0,0,0,0,0,0,0}, + {0,KEY_F7,KEY_F8,KEYPAD_9,0,0,KEYPAD_PERIOD,KEYPAD_3,KEYPAD_6} +}; +// 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}, + {0,0,0,0,0,0,0,0,0}, + {0,0,MODIFIERKEY_LEFT_CTRL,0,0,0,MODIFIERKEY_RIGHT_CTRL,0,0}, + {0,0,0,0,0,0,0,0,0}, + {0,0,0,0,0,0,0,0,0}, + {0,0,0,0,0,0,0,0,0}, + {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}, + {MODIFIERKEY_LEFT_ALT,0,0,0,MODIFIERKEY_RIGHT_ALT,0,0,0,0}, + {0,0,0,0,0,0,0,0,0}, + {0,0,0,0,0,MODIFIERKEY_FN,0,0,0}, + {0,MODIFIERKEY_LEFT_SHIFT,0,0,0,0,MODIFIERKEY_RIGHT_SHIFT,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,KEY_MEDIA_MUTE,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_MEDIA_VOLUME_INC,KEY_MEDIA_VOLUME_DEC,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_WAKE_UP,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} +}; +// 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}, + {1,1,1,1,1,1,1,1,1} +}; +// +// Assign the Teensy I/O row numbers +int Row_IO[rows_max] = {7,8,9,10,11,12,18,19,24,25,26,27,28,29,31,32,33}; +// +// Assignb the column I/O numbers +int Col_IO[cols_max] = {0,1,2,3,4,6,21,22,23}; + +// declare and initialize trackpoint variables + int x_read; // stores the reading from the X ADC + int y_read; // same for the Y ADC + char mx; // signed byte used by the Mouse.move function for x value. Positive value moves to the right + char my; // positive y value moves down + int x_delta; // signed 16 bit value gives x movement amount + int y_delta; // y version. + int x_center; //resting position of x sensor + int y_center; //resting position of y sensor + int noise_zone = 50; // dead zone around the center. Can be as low as 3 but cursor may start to drift so add some safety margin. + // Increase this number if the cursor moves without touching the TP. Decrease if too much force is needed. + 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 +// declare keyboard variables +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() { +// Trackpoint setup + delay(1000); // delay a second to let things settle out + analogReadRes(13); // set ADC resolution to 13 bits (16 bit ADC but low 3 bits are random noise) + analogReadAveraging(8); // ADC will take the average of 8 reads to filter noise. + x_center = analogRead(A11); // store the center (no movement) position for x + y_center = analogRead(A10); // same for y +// + go_0(TP_RETURN); // set the return pin for the trackpoint left/right buttons to always low + go_pu(TP_RIGHT); // set right trackpoint button as input with a pullup + go_pu(TP_LEFT); // set left trackpoint button as input with a pullup +// keyboard I/O 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 + } + pinMode(HEARTBEAT_LED, OUTPUT); // drive the LED on the Teensy +} +// +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. +char blink_count = 0; // heartbeat loop counter +boolean blinky = LOW; // heartbeat LED state +// +//---------------------------------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 at this location in the array (a non-zero value) + 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 + 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 (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, num lock 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 (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, num lock, and media key section +// + } + go_z(Row_IO[x]); // De-activate Row (send it to hi-z) + } +// +// **********keyboard scan complete +// +// Control the 3 keyboard LEDs +// + 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 + } +// + 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 + } +// + if (keyboard_leds & 1<<2) { // mask off all bits but D2 and test if set + go_1(SCRL_LED); // turn on the Scroll Lock LED + } + else { + go_0(SCRL_LED); // turn off the Scroll Lock LED + } +// +// ******************Trackpoint Section****************** +// + mx = 0; // for each loop, start with zero and update only if movement detected + my = 0; // same for y + + x_read = analogRead(A11); // read the ADC tied to the X sensor + if (x_read > (x_center + noise_zone)) { // is ADC to the right of the noise zone beyond the resting position? + x_delta = (x_read - (x_center + noise_zone)) / 10; // find out how far beyond noise zone. Divide by 10 to slow it down. + mx = byte(x_delta); // convert signed 16 bit to signed 8 bit + } + else if (x_read < (x_center - noise_zone)) { // is ADC to the left of the noise zone beyond the resting position? + x_delta = (((x_center - noise_zone) - x_read) / 10) * -1; // Answer should be negative so multiply by -1 + mx = byte(x_delta); // convert signed 16 bit to signed 8 bit + } + + y_read = analogRead(A10); // read the ADC tied to the Y sensor + if (y_read > (y_center + noise_zone)) { + y_delta = ((y_read - (y_center + noise_zone)) / 10) * -1; // up movement is negative for Mouse.move function + my = byte(y_delta); // convert signed 16 bit to signed 8 bit + } + else if (y_read < (y_center - noise_zone)) { + y_delta = (((y_center - noise_zone) - y_read) / 10); + my = byte(y_delta); // convert signed 16 bit to signed 8 bit + } + +// send the x and y data over usb if either one is not at center position + if ((mx != 0x00) || (my != 0x00)) { + Mouse.move(mx,my); + } +// ***********************read the touchpad left and right buttons*********************************** + if (!digitalRead(TP_RIGHT)) { // 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(TP_LEFT)) { // 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 + if (button_change){ + 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; +// +// Blink the LED on the Teensy to show a heartbeat +// + if (blink_count >= 0x17) { + digitalWrite(HEARTBEAT_LED, blinky); + blinky = !blinky; + blink_count = 0; + } + else { + blink_count = blink_count + 1; + } +// + delay(25); // The overall keyboard/trackpoint scanning rate is about 30ms +} diff --git a/Example_Keyboards/IBM Thinkpad 380ED/Matrix_Decoder_3p2_380.ino b/Example_Keyboards/IBM Thinkpad 380ED/Matrix_Decoder_3p2_380.ino new file mode 100644 index 0000000..bc60ce4 --- /dev/null +++ b/Example_Keyboards/IBM Thinkpad 380ED/Matrix_Decoder_3p2_380.ino @@ -0,0 +1,334 @@ +/* + 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. +*/ +// Revision History +// May 15, 2020 - Original Release + +// This software only scans the Teensy I/O's in the con_pin[] matrix defined below. +// +// ********Note that this program reports the Teensy I/O numbers over USB, not the FPC pin numbers***************** + +// The FPC pins are connected to the Teensy I/O's as follows: +// ***16 pin FPC Connector*** ***18 pin FPC Connector*** +// FPC 06,07,08,09,10,11,12,13,14,15,16,01,02,03,04,05,06,07,08,09,10,11,12,13,14,15,16,17,18 +// I/O 06,05,20,04,21,03,22,02,23,01,00,07,24,08,09,10,11,12,33,25,32,26,27,28,31,30,29,18,19 + +// Load the con_pin array with the Teensy 3.2 I/O numbers +int con_pin[] = {6,5,20,4,21,3,22,2,23,1,0,7,24,8,9,10,11,12,33,25,32,26,27,28,31,30,29,18,19}; +// +int total = 29; // The total number of I/O's listed in con_pin[] + +// load the key codes used in sending usb numbers, tab, and down arrow +int key_1 = KEY_1; +int key_2 = KEY_2; +int key_3 = KEY_3; +int key_4 = KEY_4; +int key_5 = KEY_5; +int key_6 = KEY_6; +int key_7 = KEY_7; +int key_8 = KEY_8; +int key_9 = KEY_9; +int key_0 = KEY_0; +int key_tab = KEY_TAB; +int key_down = KEY_DOWN; +// +// Function to set a pin as an input with a pullup so it's high unless grounded by a key press +void go_z(int pin) +{ + pinMode(pin, INPUT_PULLUP); + digitalWrite(pin, HIGH); +} + +// Function to set a pin as an output and drive it to a logic low (0 volts) +void go_0(int pin) +{ + pinMode(pin, OUTPUT); + digitalWrite(pin, LOW); +} + +// Function to send numbers over USB for display on an editor +void usb_num(int num) // the numbers 0 thru 33 are sent over usb as 0 thru 33 +{ + switch (num) { + case 0: + Keyboard.set_key1(key_0); + Keyboard.send_now(); + break; + case 1: + Keyboard.set_key1(key_1); + Keyboard.send_now(); + break; + case 2: + Keyboard.set_key1(key_2); + Keyboard.send_now(); + break; + case 3: + Keyboard.set_key1(key_3); + Keyboard.send_now(); + break; + case 4: + Keyboard.set_key1(key_4); + Keyboard.send_now(); + break; + case 5: + Keyboard.set_key1(key_5); + Keyboard.send_now(); + break; + case 6: + Keyboard.set_key1(key_6); + Keyboard.send_now(); + break; + case 7: + Keyboard.set_key1(key_7); + Keyboard.send_now(); + break; + case 8: + Keyboard.set_key1(key_8); + Keyboard.send_now(); + break; + case 9: + Keyboard.set_key1(key_9); + Keyboard.send_now(); + break; + case 10: + Keyboard.set_key1(key_1); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_0); + Keyboard.send_now(); + break; + case 11: + Keyboard.set_key1(key_1); + Keyboard.send_now(); + delay(50); + Keyboard.set_key1(0); + Keyboard.send_now(); + delay(50); + Keyboard.set_key2(key_1); + Keyboard.send_now(); + break; + case 12: + Keyboard.set_key1(key_1); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_2); + Keyboard.send_now(); + break; + case 13: + Keyboard.set_key1(key_1); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_3); + Keyboard.send_now(); + break; + case 14: + Keyboard.set_key1(key_1); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_4); + Keyboard.send_now(); + break; + case 15: + Keyboard.set_key1(key_1); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_5); + Keyboard.send_now(); + break; + case 16: + Keyboard.set_key1(key_1); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_6); + Keyboard.send_now(); + break; + case 17: + Keyboard.set_key1(key_1); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_7); + Keyboard.send_now(); + break; + case 18: + Keyboard.set_key1(key_1); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_8); + Keyboard.send_now(); + break; + case 19: + Keyboard.set_key1(key_1); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_9); + Keyboard.send_now(); + break; + case 20: + Keyboard.set_key1(key_2); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_0); + Keyboard.send_now(); + break; + case 21: + Keyboard.set_key1(key_2); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_1); + Keyboard.send_now(); + break; + case 22: + Keyboard.set_key1(key_2); + Keyboard.send_now(); + delay(50); + Keyboard.set_key1(0); + Keyboard.send_now(); + delay(50); + Keyboard.set_key2(key_2); + Keyboard.send_now(); + break; + case 23: + Keyboard.set_key1(key_2); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_3); + Keyboard.send_now(); + break; + case 24: + Keyboard.set_key1(key_2); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_4); + Keyboard.send_now(); + break; + case 25: + Keyboard.set_key1(key_2); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_5); + Keyboard.send_now(); + break; + case 26: + Keyboard.set_key1(key_2); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_6); + Keyboard.send_now(); + break; + case 27: + Keyboard.set_key1(key_2); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_7); + Keyboard.send_now(); + break; + case 28: + Keyboard.set_key1(key_2); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_8); + Keyboard.send_now(); + break; + case 29: + Keyboard.set_key1(key_2); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_9); + Keyboard.send_now(); + break; + case 30: + Keyboard.set_key1(key_3); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_0); + Keyboard.send_now(); + break; + case 31: + Keyboard.set_key1(key_3); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_1); + Keyboard.send_now(); + break; + case 32: + Keyboard.set_key1(key_3); + Keyboard.send_now(); + delay(20); + Keyboard.set_key2(key_2); + Keyboard.send_now(); + break; + case 33: + Keyboard.set_key1(key_3); + Keyboard.send_now(); + delay(50); + Keyboard.set_key1(0); + Keyboard.send_now(); + delay(50); + Keyboard.set_key2(key_3); + Keyboard.send_now(); + break; + } + delay(20); + Keyboard.set_key1(0); // clear out the key slots + Keyboard.set_key2(0); + Keyboard.send_now(); + delay(20); + Keyboard.set_key1(key_tab); // Tab over to position for next number + Keyboard.send_now(); + delay(20); + Keyboard.set_key1(0); // clear out the tab from the slot + Keyboard.send_now(); + delay(20); +} + +// Function to send a down arrow over usb to position for the next key +void down_arrow(void) { + Keyboard.set_key1(key_down); // send a down arrow + Keyboard.send_now(); + delay(20); + Keyboard.set_key1(0); // release the down arrow + Keyboard.send_now(); +} + +// --------------------------------------------------Setup----------------------------------- +void setup() { + for (int k = 0; k < total; k++) { // loop thru all row-column pins + go_z(con_pin[k]); // set each pin as an input with a pullup + } + delay(15000); // Wait for the host to connect to the Teensy as a keyboard. If 2 pins are shorted, + // you want the host to be ready to receive the pin numbers. +} +// +// -------------------------------------------Main Loop-------------------------------------- +// +void loop() { +// +// + for (int i=0; i (x_center + noise_zone)) { // is ADC to the right of the noise zone beyond the resting position? + x_delta = (x_read - (x_center + noise_zone)) / 10; // find out how far beyond noise zone. Divide by 10 to slow it down. + mx = byte(x_delta); // convert signed 16 bit to signed 8 bit + } + else if (x_read < (x_center - noise_zone)) { // is ADC to the left of the noise zone beyond the resting position? + x_delta = (((x_center - noise_zone) - x_read) / 10) * -1; // Answer should be negative so multiply by -1 + mx = byte(x_delta); + } + + y_read = analogRead(A10); // read the ADC tied to the Y sensor + if (y_read > (y_center + noise_zone)) { + y_delta = ((y_read - (y_center + noise_zone)) / 10) * -1; // up movement is negative for Mouse.move function + my = byte(y_delta); + } + else if (y_read < (y_center - noise_zone)) { + y_delta = (((y_center - noise_zone) - y_read) / 10); + my = byte(y_delta); + } + +// send the x and y data over usb if either one is not at center position + if ((mx != 0x00) || (my != 0x00)) { + Mouse.move(mx,my); + } +// ***********************read the touchpad left and right buttons*********************************** + if (!digitalRead(TP_RIGHT)) { // 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(TP_LEFT)) { // 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 + if (button_change){ + 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; +// +// **************************************End of trackpoint routine*********************************** +// + delay(30); // wait 30ms before repeating next polling cycle +}