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/* |
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Copyright 2016 Fred Sundvik <fsundvik@gmail.com> |
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Jun Wako <wakojun@gmail.com> |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#include <stdint.h> |
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#include <stdbool.h> |
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#include <string.h> |
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#include <hal.h> |
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#include "timer.h" |
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#include "wait.h" |
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#include "print.h" |
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#include "debug.h" |
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#include "matrix.h" |
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#include "keyboard.h" |
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#include "serial_link/system/serial_link.h" |
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/* |
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* Infinity ErgoDox Pinusage: |
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* Column pins are input with internal pull-down. Row pins are output and strobe with high. |
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* Key is high or 1 when it turns on. |
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* |
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* col: { PTD1, PTD4, PTD5, PTD6, PTD7 } |
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* row: { PTB2, PTB3, PTB18, PTB19, PTC0, PTC9, PTC10, PTC11, PTD0 } |
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*/ |
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/* matrix state(1:on, 0:off) */ |
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static matrix_row_t matrix[MATRIX_ROWS]; |
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static matrix_row_t matrix_debouncing[LOCAL_MATRIX_ROWS]; |
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static bool debouncing = false; |
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static uint16_t debouncing_time = 0; |
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void matrix_init(void) |
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{ |
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/* Row(sense) */ |
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palSetPadMode(GPIOD, 1, PAL_MODE_INPUT_PULLDOWN); |
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palSetPadMode(GPIOD, 4, PAL_MODE_INPUT_PULLDOWN); |
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palSetPadMode(GPIOD, 5, PAL_MODE_INPUT_PULLDOWN); |
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palSetPadMode(GPIOD, 6, PAL_MODE_INPUT_PULLDOWN); |
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palSetPadMode(GPIOD, 7, PAL_MODE_INPUT_PULLDOWN); |
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/* Column(strobe) */ |
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palSetPadMode(GPIOB, 2, PAL_MODE_OUTPUT_PUSHPULL); |
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palSetPadMode(GPIOB, 3, PAL_MODE_OUTPUT_PUSHPULL); |
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palSetPadMode(GPIOB, 18, PAL_MODE_OUTPUT_PUSHPULL); |
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palSetPadMode(GPIOB, 19, PAL_MODE_OUTPUT_PUSHPULL); |
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palSetPadMode(GPIOC, 0, PAL_MODE_OUTPUT_PUSHPULL); |
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palSetPadMode(GPIOC, 9, PAL_MODE_OUTPUT_PUSHPULL); |
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palSetPadMode(GPIOC, 10, PAL_MODE_OUTPUT_PUSHPULL); |
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palSetPadMode(GPIOC, 11, PAL_MODE_OUTPUT_PUSHPULL); |
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palSetPadMode(GPIOD, 0, PAL_MODE_OUTPUT_PUSHPULL); |
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memset(matrix, 0, MATRIX_ROWS * sizeof(matrix_row_t)); |
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memset(matrix_debouncing, 0, LOCAL_MATRIX_ROWS * sizeof(matrix_row_t)); |
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matrix_init_quantum(); |
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} |
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uint8_t matrix_scan(void) |
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{ |
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for (int row = 0; row < LOCAL_MATRIX_ROWS; row++) { |
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matrix_row_t data = 0; |
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// strobe row |
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switch (row) { |
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case 0: palSetPad(GPIOB, 2); break; |
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case 1: palSetPad(GPIOB, 3); break; |
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case 2: palSetPad(GPIOB, 18); break; |
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case 3: palSetPad(GPIOB, 19); break; |
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case 4: palSetPad(GPIOC, 0); break; |
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case 5: palSetPad(GPIOC, 9); break; |
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case 6: palSetPad(GPIOC, 10); break; |
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case 7: palSetPad(GPIOC, 11); break; |
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case 8: palSetPad(GPIOD, 0); break; |
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} |
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// need wait to settle pin state |
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// if you wait too short, or have a too high update rate |
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// the keyboard might freeze, or there might not be enough |
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// processing power to update the LCD screen properly. |
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// 20us, or two ticks at 100000Hz seems to be OK |
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wait_us(20); |
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// read col data: { PTD1, PTD4, PTD5, PTD6, PTD7 } |
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data = ((palReadPort(GPIOD) & 0xF0) >> 3) | |
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((palReadPort(GPIOD) & 0x02) >> 1); |
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// un-strobe row |
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switch (row) { |
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case 0: palClearPad(GPIOB, 2); break; |
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case 1: palClearPad(GPIOB, 3); break; |
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case 2: palClearPad(GPIOB, 18); break; |
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case 3: palClearPad(GPIOB, 19); break; |
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case 4: palClearPad(GPIOC, 0); break; |
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case 5: palClearPad(GPIOC, 9); break; |
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case 6: palClearPad(GPIOC, 10); break; |
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case 7: palClearPad(GPIOC, 11); break; |
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case 8: palClearPad(GPIOD, 0); break; |
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} |
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if (matrix_debouncing[row] != data) { |
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matrix_debouncing[row] = data; |
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debouncing = true; |
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debouncing_time = timer_read(); |
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} |
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} |
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uint8_t offset = 0; |
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if (is_serial_link_master() && !is_keyboard_left()) { |
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offset = MATRIX_ROWS - LOCAL_MATRIX_ROWS; |
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} |
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if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCE) { |
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for (int row = 0; row < LOCAL_MATRIX_ROWS; row++) { |
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matrix[offset + row] = matrix_debouncing[row]; |
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} |
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debouncing = false; |
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} |
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matrix_scan_quantum(); |
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return 1; |
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} |
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bool matrix_is_on(uint8_t row, uint8_t col) |
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{ |
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return (matrix[row] & (1<<col)); |
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} |
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matrix_row_t matrix_get_row(uint8_t row) |
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{ |
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return matrix[row]; |
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} |
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void matrix_print(void) |
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{ |
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xprintf("\nr/c 01234567\n"); |
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) { |
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xprintf("%X0: ", row); |
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matrix_row_t data = matrix_get_row(row); |
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for (int col = 0; col < MATRIX_COLS; col++) { |
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if (data & (1<<col)) |
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xprintf("1"); |
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else |
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xprintf("0"); |
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} |
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xprintf("\n"); |
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} |
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} |
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void matrix_set_remote(matrix_row_t* rows, uint8_t index) { |
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uint8_t offset = 0; |
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if (is_keyboard_left()) { |
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offset = LOCAL_MATRIX_ROWS * (index + 1); |
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} else { |
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offset = MATRIX_ROWS - LOCAL_MATRIX_ROWS * (index + 2); |
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} |
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for (int row = 0; row < LOCAL_MATRIX_ROWS; row++) { |
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matrix[offset + row] = rows[row]; |
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} |
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} |