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225 lines
5.9 KiB
225 lines
5.9 KiB
/*
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Copyright 2012 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 <ch.h>
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#include <hal.h>
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/*
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* scan matrix
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*/
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#include "print.h"
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#include "debug.h"
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#include "util.h"
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#include "matrix.h"
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#include "wait.h"
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//#include "pwm.c"
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#ifndef DEBOUNCE
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# define DEBOUNCE 5
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#endif
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static uint8_t debouncing = DEBOUNCE;
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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[MATRIX_ROWS];
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static matrix_row_t read_cols(void);
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static void init_cols(void);
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static void unselect_rows(void);
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static void select_row(uint8_t row);
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inline uint8_t matrix_rows(void){
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return MATRIX_ROWS;
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}
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inline uint8_t matrix_cols(void){
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return MATRIX_COLS;
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}
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/* generic STM32F103C8T6 board */
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#ifdef BOARD_GENERIC_STM32_F103
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// This could be removed, only used now in matrix_init()
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#define LED_ON() do { palClearPad(GPIOA, 1) ;} while (0)
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#define LED_OFF() do { palSetPad(GPIOA, 1); } while (0)
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#endif
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__attribute__ ((weak))
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void matrix_init_kb(void) {
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matrix_init_user();
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}
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__attribute__ ((weak))
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void matrix_scan_kb(void) {
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matrix_scan_user();
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}
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__attribute__ ((weak))
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void matrix_init_user(void) {
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}
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__attribute__ ((weak))
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void matrix_scan_user(void) {
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}
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void matrix_init(void)
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{
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// initialize row and col
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unselect_rows();
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init_cols();
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// initialize matrix state: all keys off
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for (uint8_t i=0; i < MATRIX_ROWS; i++) {
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matrix[i] = 0;
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matrix_debouncing[i] = 0;
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}
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//debug
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debug_matrix = true;
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LED_ON();
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wait_ms(500);
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LED_OFF();
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matrix_init_quantum();
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}
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uint8_t matrix_scan(void){
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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select_row(i);
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wait_us(30); // without this wait read unstable value.
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matrix_row_t cols = read_cols();
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if (matrix_debouncing[i] != cols) {
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matrix_debouncing[i] = cols;
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if (debouncing) {
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debug("bounce!: "); debug_hex(debouncing); debug("\n");
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}
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debouncing = DEBOUNCE;
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}
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unselect_rows();
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}
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if (debouncing) {
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if (--debouncing) {
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wait_ms(1);
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} else {
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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matrix[i] = matrix_debouncing[i];
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}
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}
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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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inline bool matrix_is_on(uint8_t row, uint8_t col){
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return (matrix[row] & ((matrix_row_t)1<<col));
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}
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inline matrix_row_t matrix_get_row(uint8_t row){
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return matrix[row];
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}
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void matrix_print(void){
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print("\nr/c 0123456789ABCDEF\n");
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
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phex(row); print(": ");
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pbin_reverse16(matrix_get_row(row));
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print("\n");
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}
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}
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/* Column pin configuration
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*/
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// Modified by Xydane
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static void init_cols(void){
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palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_PULLUP);
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palSetPadMode(GPIOA, 15, PAL_MODE_INPUT_PULLUP);
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palSetPadMode(GPIOA, 10, PAL_MODE_INPUT_PULLUP);
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palSetPadMode(GPIOA, 9, PAL_MODE_INPUT_PULLUP);
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palSetPadMode(GPIOA, 8, PAL_MODE_INPUT_PULLUP);
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palSetPadMode(GPIOB, 15, PAL_MODE_INPUT_PULLUP);
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palSetPadMode(GPIOB, 14, PAL_MODE_INPUT_PULLUP);
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palSetPadMode(GPIOB, 13, PAL_MODE_INPUT_PULLUP);
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palSetPadMode(GPIOB, 12, PAL_MODE_INPUT_PULLUP);
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palSetPadMode(GPIOB, 11, PAL_MODE_INPUT_PULLUP);
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palSetPadMode(GPIOB, 10, PAL_MODE_INPUT_PULLUP);
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palSetPadMode(GPIOB, 1, PAL_MODE_INPUT_PULLUP);
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palSetPadMode(GPIOB, 0, PAL_MODE_INPUT_PULLUP);
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palSetPadMode(GPIOA, 7, PAL_MODE_INPUT_PULLUP);
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palSetPadMode(GPIOA, 6, PAL_MODE_INPUT_PULLUP);
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}
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/* Returns status of switches(1:on, 0:off) */
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// Modified by Xydane
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static matrix_row_t read_cols(void){
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return ((palReadPad(GPIOA, 5)==PAL_HIGH) ? 0 : (1<<0))
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| ((palReadPad(GPIOA, 15)==PAL_HIGH) ? 0 : (1<<1))
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| ((palReadPad(GPIOA, 10)==PAL_HIGH) ? 0 : (1<<2))
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| ((palReadPad(GPIOA, 9)==PAL_HIGH) ? 0 : (1<<3))
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| ((palReadPad(GPIOA, 8)==PAL_HIGH) ? 0 : (1<<4))
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| ((palReadPad(GPIOB, 15)==PAL_HIGH) ? 0 : (1<<5))
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| ((palReadPad(GPIOB, 14)==PAL_HIGH) ? 0 : (1<<6))
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| ((palReadPad(GPIOB, 13)==PAL_HIGH) ? 0 : (1<<7))
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| ((palReadPad(GPIOB, 12)==PAL_HIGH) ? 0 : (1<<8))
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| ((palReadPad(GPIOB, 11)==PAL_HIGH) ? 0 : (1<<9))
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| ((palReadPad(GPIOB, 10)==PAL_HIGH) ? 0 : (1<<10))
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| ((palReadPad(GPIOB, 1)==PAL_HIGH) ? 0 : (1<<11))
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| ((palReadPad(GPIOB, 0)==PAL_HIGH) ? 0 : (1<<12))
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| ((palReadPad(GPIOA, 7)==PAL_HIGH) ? 0 : (1<<13))
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| ((palReadPad(GPIOA, 6)==PAL_HIGH) ? 0 : (1<<14));
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}
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/* Row pin configuration
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*/
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// Modified by Xydane
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static void unselect_rows(void){
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palSetPadMode(GPIOB, 9, PAL_MODE_INPUT);
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palSetPadMode(GPIOB, 8, PAL_MODE_INPUT);
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palSetPadMode(GPIOB, 7, PAL_MODE_INPUT);
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palSetPadMode(GPIOB, 6, PAL_MODE_INPUT);
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palSetPadMode(GPIOB, 5, PAL_MODE_INPUT);
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palSetPadMode(GPIOA, 4, PAL_MODE_INPUT);
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}
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// Modified by Xydane
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static void select_row(uint8_t row){
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(void)row;
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switch (row) {
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case 0:
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palSetPadMode(GPIOB, 9, PAL_MODE_OUTPUT_PUSHPULL);
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palClearPad(GPIOB, 9);
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break;
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case 1:
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palSetPadMode(GPIOB, 8, PAL_MODE_OUTPUT_PUSHPULL);
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palClearPad(GPIOB, 8);
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break;
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case 2:
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palSetPadMode(GPIOB, 7, PAL_MODE_OUTPUT_PUSHPULL);
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palClearPad(GPIOB, 7);
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break;
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case 3:
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palSetPadMode(GPIOB, 6, PAL_MODE_OUTPUT_PUSHPULL);
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palClearPad(GPIOB, 6);
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break;
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case 4:
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palSetPadMode(GPIOB, 5, PAL_MODE_OUTPUT_PUSHPULL);
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palClearPad(GPIOB, 5);
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break;
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case 5:
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palSetPadMode(GPIOA, 4, PAL_MODE_OUTPUT_PUSHPULL);
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palClearPad(GPIOA, 4);
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break;
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}
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}
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