270 lines
7.8 KiB
C
270 lines
7.8 KiB
C
/*
|
|
Copyright 2012 Jun Wako <wakojun@gmail.com>
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "ch.h"
|
|
#include "hal.h"
|
|
|
|
/*
|
|
* scan matrix
|
|
*/
|
|
#include "print.h"
|
|
#include "debug.h"
|
|
#include "util.h"
|
|
#include "matrix.h"
|
|
#include "wait.h"
|
|
|
|
#ifndef DEBOUNCE
|
|
# define DEBOUNCE 5
|
|
#endif
|
|
static uint8_t debouncing = DEBOUNCE;
|
|
|
|
/* matrix state(1:on, 0:off) */
|
|
static matrix_row_t matrix[MATRIX_ROWS];
|
|
static matrix_row_t matrix_debouncing[MATRIX_ROWS];
|
|
|
|
static matrix_row_t read_cols(void);
|
|
static void init_cols(void);
|
|
static void unselect_rows(void);
|
|
static void select_row(uint8_t row);
|
|
|
|
|
|
inline
|
|
uint8_t matrix_rows(void)
|
|
{
|
|
return MATRIX_ROWS;
|
|
}
|
|
|
|
inline
|
|
uint8_t matrix_cols(void)
|
|
{
|
|
return MATRIX_COLS;
|
|
}
|
|
|
|
/* generic STM32F103C8T6 board */
|
|
#ifdef BOARD_GENERIC_STM32_F103
|
|
#define LED_ON() do { palClearPad(GPIOC, GPIOC_LED) ;} while (0)
|
|
#define LED_OFF() do { palSetPad(GPIOC, GPIOC_LED); } while (0)
|
|
#define LED_TGL() do { palTogglePad(GPIOC, GPIOC_LED); } while (0)
|
|
#endif
|
|
|
|
/* Maple Mini */
|
|
#ifdef BOARD_MAPLEMINI_STM32_F103
|
|
#define LED_ON() do { palSetPad(GPIOB, 1) ;} while (0)
|
|
#define LED_OFF() do { palClearPad(GPIOB, 1); } while (0)
|
|
#define LED_TGL() do { palTogglePad(GPIOB, 1); } while (0)
|
|
#endif
|
|
|
|
void matrix_init(void)
|
|
{
|
|
// initialize row and col
|
|
unselect_rows();
|
|
init_cols();
|
|
|
|
// initialize matrix state: all keys off
|
|
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
|
|
matrix[i] = 0;
|
|
matrix_debouncing[i] = 0;
|
|
}
|
|
|
|
//debug
|
|
debug_matrix = true;
|
|
LED_ON();
|
|
wait_ms(500);
|
|
LED_OFF();
|
|
}
|
|
|
|
uint8_t matrix_scan(void)
|
|
{
|
|
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
|
|
select_row(i);
|
|
wait_us(30); // without this wait read unstable value.
|
|
matrix_row_t cols = read_cols();
|
|
if (matrix_debouncing[i] != cols) {
|
|
matrix_debouncing[i] = cols;
|
|
if (debouncing) {
|
|
debug("bounce!: "); debug_hex(debouncing); debug("\n");
|
|
}
|
|
debouncing = DEBOUNCE;
|
|
}
|
|
unselect_rows();
|
|
}
|
|
|
|
if (debouncing) {
|
|
if (--debouncing) {
|
|
wait_ms(1);
|
|
} else {
|
|
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
|
|
matrix[i] = matrix_debouncing[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
inline
|
|
bool matrix_is_on(uint8_t row, uint8_t col)
|
|
{
|
|
return (matrix[row] & ((matrix_row_t)1<<col));
|
|
}
|
|
|
|
inline
|
|
matrix_row_t matrix_get_row(uint8_t row)
|
|
{
|
|
return matrix[row];
|
|
}
|
|
|
|
void matrix_print(void)
|
|
{
|
|
print("\nr/c 0123456789ABCDEF\n");
|
|
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
|
|
phex(row); print(": ");
|
|
pbin_reverse16(matrix_get_row(row));
|
|
print("\n");
|
|
}
|
|
}
|
|
|
|
/* Column pin configuration
|
|
*/
|
|
static void init_cols(void)
|
|
{
|
|
palSetPadMode(GPIOB, 11, PAL_MODE_INPUT_PULLUP);
|
|
palSetPadMode(GPIOB, 10, PAL_MODE_INPUT_PULLUP);
|
|
palSetPadMode(GPIOB, 2, PAL_MODE_INPUT_PULLUP);
|
|
palSetPadMode(GPIOB, 0, PAL_MODE_INPUT_PULLUP);
|
|
palSetPadMode(GPIOA, 7, PAL_MODE_INPUT_PULLUP);
|
|
palSetPadMode(GPIOA, 6, PAL_MODE_INPUT_PULLUP);
|
|
palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_PULLUP);
|
|
palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_PULLUP);
|
|
palSetPadMode(GPIOA, 3, PAL_MODE_INPUT_PULLUP);
|
|
palSetPadMode(GPIOA, 2, PAL_MODE_INPUT_PULLUP);
|
|
palSetPadMode(GPIOB, 1, PAL_MODE_INPUT_PULLUP);
|
|
palSetPadMode(GPIOB, 0, PAL_MODE_INPUT_PULLUP);
|
|
palSetPadMode(GPIOC, 15, PAL_MODE_INPUT_PULLUP);
|
|
palSetPadMode(GPIOC, 14, PAL_MODE_INPUT_PULLUP);
|
|
palSetPadMode(GPIOC, 13, PAL_MODE_INPUT_PULLUP);
|
|
}
|
|
|
|
/* Returns status of switches(1:on, 0:off) */
|
|
static matrix_row_t read_cols(void)
|
|
{
|
|
return ((palReadPad(GPIOB, 11)==PAL_HIGH) ? 0 : (1<<0))
|
|
| ((palReadPad(GPIOB, 10)==PAL_HIGH) ? 0 : (1<<1))
|
|
| ((palReadPad(GPIOB, 2)==PAL_HIGH) ? 0 : (1<<2))
|
|
| ((palReadPad(GPIOB, 0)==PAL_HIGH) ? 0 : (1<<3))
|
|
| ((palReadPad(GPIOA, 7)==PAL_HIGH) ? 0 : (1<<4))
|
|
| ((palReadPad(GPIOA, 6)==PAL_HIGH) ? 0 : (1<<5))
|
|
| ((palReadPad(GPIOA, 5)==PAL_HIGH) ? 0 : (1<<6))
|
|
| ((palReadPad(GPIOA, 4)==PAL_HIGH) ? 0 : (1<<7))
|
|
| ((palReadPad(GPIOA, 3)==PAL_HIGH) ? 0 : (1<<8))
|
|
| ((palReadPad(GPIOA, 2)==PAL_HIGH) ? 0 : (1<<9))
|
|
| ((palReadPad(GPIOA, 1)==PAL_HIGH) ? 0 : (1<<10))
|
|
| ((palReadPad(GPIOA, 0)==PAL_HIGH) ? 0 : (1<<11))
|
|
| ((palReadPad(GPIOC, 15)==PAL_HIGH) ? 0 : (1<<12))
|
|
| ((palReadPad(GPIOC, 14)==PAL_HIGH) ? 0 : (1<<13))
|
|
| ((palReadPad(GPIOC, 13)==PAL_HIGH) ? 0 : (1<<14));
|
|
}
|
|
|
|
/* Row pin configuration
|
|
*/
|
|
static void unselect_rows(void)
|
|
{
|
|
palSetPadMode(GPIOB, 7, PAL_MODE_INPUT); // hi-Z
|
|
palSetPadMode(GPIOB, 6, PAL_MODE_INPUT); // hi-Z
|
|
palSetPadMode(GPIOB, 5, PAL_MODE_INPUT); // hi-Z
|
|
palSetPadMode(GPIOB, 4, PAL_MODE_INPUT); // hi-Z
|
|
palSetPadMode(GPIOB, 3, PAL_MODE_INPUT); // hi-Z
|
|
palSetPadMode(GPIOA, 15, PAL_MODE_INPUT); // hi-Z
|
|
palSetPadMode(GPIOA, 14, PAL_MODE_INPUT); // hi-Z
|
|
palSetPadMode(GPIOA, 13, PAL_MODE_INPUT); // hi-Z
|
|
palSetPadMode(GPIOA, 10, PAL_MODE_INPUT); // hi-Z
|
|
palSetPadMode(GPIOA, 9, PAL_MODE_INPUT); // hi-Z
|
|
palSetPadMode(GPIOA, 8, PAL_MODE_INPUT); // hi-Z
|
|
palSetPadMode(GPIOB, 15, PAL_MODE_INPUT); // hi-Z
|
|
palSetPadMode(GPIOB, 14, PAL_MODE_INPUT); // hi-Z
|
|
palSetPadMode(GPIOB, 13, PAL_MODE_INPUT); // hi-Z
|
|
palSetPadMode(GPIOB, 12, PAL_MODE_INPUT); // hi-Z
|
|
}
|
|
|
|
static void select_row(uint8_t row)
|
|
{
|
|
(void)row;
|
|
// Output low to select
|
|
switch (row) {
|
|
case 0:
|
|
palSetPadMode(GPIOB, 7, PAL_MODE_OUTPUT_PUSHPULL);
|
|
palClearPad(GPIOB, 7);
|
|
break;
|
|
case 1:
|
|
palSetPadMode(GPIOB, 6, PAL_MODE_OUTPUT_PUSHPULL);
|
|
palClearPad(GPIOB, 6);
|
|
break;
|
|
case 2:
|
|
palSetPadMode(GPIOB, 5, PAL_MODE_OUTPUT_PUSHPULL);
|
|
palClearPad(GPIOB, 5);
|
|
break;
|
|
case 3:
|
|
palSetPadMode(GPIOB, 4, PAL_MODE_OUTPUT_PUSHPULL);
|
|
palClearPad(GPIOB, 4);
|
|
break;
|
|
case 4:
|
|
palSetPadMode(GPIOB, 3, PAL_MODE_OUTPUT_PUSHPULL);
|
|
palClearPad(GPIOB, 3);
|
|
break;
|
|
case 5:
|
|
palSetPadMode(GPIOA, 15, PAL_MODE_OUTPUT_PUSHPULL);
|
|
palClearPad(GPIOA, 15);
|
|
break;
|
|
case 6:
|
|
palSetPadMode(GPIOA, 14, PAL_MODE_OUTPUT_PUSHPULL);
|
|
palClearPad(GPIOA, 14);
|
|
break;
|
|
case 7:
|
|
palSetPadMode(GPIOA, 13, PAL_MODE_OUTPUT_PUSHPULL);
|
|
palClearPad(GPIOA, 13);
|
|
break;
|
|
case 8:
|
|
palSetPadMode(GPIOA, 10, PAL_MODE_OUTPUT_PUSHPULL);
|
|
palClearPad(GPIOA, 10);
|
|
break;
|
|
case 9:
|
|
palSetPadMode(GPIOA, 9, PAL_MODE_OUTPUT_PUSHPULL);
|
|
palClearPad(GPIOA, 9);
|
|
break;
|
|
case 10:
|
|
palSetPadMode(GPIOA, 8, PAL_MODE_OUTPUT_PUSHPULL);
|
|
palClearPad(GPIOA, 8);
|
|
break;
|
|
case 11:
|
|
palSetPadMode(GPIOB, 15, PAL_MODE_OUTPUT_PUSHPULL);
|
|
palClearPad(GPIOB, 15);
|
|
break;
|
|
case 12:
|
|
palSetPadMode(GPIOB, 14, PAL_MODE_OUTPUT_PUSHPULL);
|
|
palClearPad(GPIOB, 14);
|
|
break;
|
|
case 13:
|
|
palSetPadMode(GPIOB, 13, PAL_MODE_OUTPUT_PUSHPULL);
|
|
palClearPad(GPIOB, 13);
|
|
break;
|
|
case 14:
|
|
palSetPadMode(GPIOB, 12, PAL_MODE_OUTPUT_PUSHPULL);
|
|
palClearPad(GPIOB, 12);
|
|
break;
|
|
}
|
|
}
|