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#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include "hal.h"
#include "timer.h"
#include "wait.h"
#include "printf.h"
#include "backlight.h"
#include "matrix.h"
#include "action.h"
#include "keycode.h"
#include <string.h>
/*
* col: { B11, B10, B2, B1, A7, B0 }
* row: { A10, A9, A8, B15, C13, C14, C15, A2 }
*/
/* matrix state(1:on, 0:off) */
static matrix_row_t matrix[MATRIX_ROWS];
static matrix_row_t matrix_debouncing[MATRIX_COLS];
static bool debouncing = false;
static uint16_t debouncing_time = 0;
static uint8_t encoder_state = 0;
static int8_t encoder_value = 0;
static int8_t encoder_LUT[] = { 0, -1, 1, 0, 1, 0, 0, -1, -1, 0, 0, 1, 0, 1, -1, 0 };
static bool dip_switch[4] = {0, 0, 0, 0};
__attribute__ ((weak))
void matrix_init_user(void) {}
__attribute__ ((weak))
void matrix_scan_user(void) {}
__attribute__ ((weak))
void matrix_init_kb(void) {
matrix_init_user();
}
__attribute__ ((weak))
void matrix_scan_kb(void) {
matrix_scan_user();
}
void matrix_init(void) {
printf("matrix init\n");
//debug_matrix = true;
// dip switch setup
palSetPadMode(GPIOB, 14, PAL_MODE_INPUT_PULLUP);
palSetPadMode(GPIOA, 15, PAL_MODE_INPUT_PULLUP);
palSetPadMode(GPIOA, 10, PAL_MODE_INPUT_PULLUP);
palSetPadMode(GPIOB, 9, PAL_MODE_INPUT_PULLUP);
// encoder setup
palSetPadMode(GPIOB, 12, PAL_MODE_INPUT_PULLUP);
palSetPadMode(GPIOB, 13, PAL_MODE_INPUT_PULLUP);
encoder_state = (palReadPad(GPIOB, 12) << 0) | (palReadPad(GPIOB, 13) << 1);
// actual matrix setup
palSetPadMode(GPIOB, 11, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOB, 10, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOB, 2, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOB, 1, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOA, 7, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOB, 0, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOA, 10, PAL_MODE_INPUT_PULLDOWN);
palSetPadMode(GPIOA, 9, PAL_MODE_INPUT_PULLDOWN);
palSetPadMode(GPIOA, 8, PAL_MODE_INPUT_PULLDOWN);
palSetPadMode(GPIOB, 15, PAL_MODE_INPUT_PULLDOWN);
palSetPadMode(GPIOC, 13, PAL_MODE_INPUT_PULLDOWN);
palSetPadMode(GPIOC, 14, PAL_MODE_INPUT_PULLDOWN);
palSetPadMode(GPIOC, 15, PAL_MODE_INPUT_PULLDOWN);
palSetPadMode(GPIOA, 2, PAL_MODE_INPUT_PULLDOWN);
memset(matrix, 0, MATRIX_ROWS * sizeof(matrix_row_t));
memset(matrix_debouncing, 0, MATRIX_COLS * sizeof(matrix_row_t));
matrix_init_quantum();
}
__attribute__ ((weak))
void dip_update(uint8_t index, bool active) { }
__attribute__ ((weak))
void encoder_update(bool clockwise) { }
bool last_dip_switch[4] = {0};
#ifndef ENCODER_RESOLUTION
#define ENCODER_RESOLUTION 4
#endif
uint8_t matrix_scan(void) {
// dip switch
dip_switch[0] = !palReadPad(GPIOB, 14);
dip_switch[1] = !palReadPad(GPIOA, 15);
dip_switch[2] = !palReadPad(GPIOA, 10);
dip_switch[3] = !palReadPad(GPIOB, 9);
for (uint8_t i = 0; i < 4; i++) {
if (last_dip_switch[i] ^ dip_switch[i])
dip_update(i, dip_switch[i]);
}
memcpy(last_dip_switch, dip_switch, sizeof(&dip_switch));
// encoder on B12 and B13
encoder_state <<= 2;
encoder_state |= (palReadPad(GPIOB, 12) << 0) | (palReadPad(GPIOB, 13) << 1);
encoder_value += encoder_LUT[encoder_state & 0xF];
if (encoder_value >= ENCODER_RESOLUTION) {
encoder_update(0);
}
if (encoder_value <= -ENCODER_RESOLUTION) { // direction is arbitrary here, but this clockwise
encoder_update(1);
}
encoder_value %= ENCODER_RESOLUTION;
// actual matrix
for (int col = 0; col < MATRIX_COLS; col++) {
matrix_row_t data = 0;
// strobe col { B11, B10, B2, B1, A7, B0 }
switch (col) {
case 0: palSetPad(GPIOB, 11); break;
case 1: palSetPad(GPIOB, 10); break;
case 2: palSetPad(GPIOB, 2); break;
case 3: palSetPad(GPIOB, 1); break;
case 4: palSetPad(GPIOA, 7); break;
case 5: palSetPad(GPIOB, 0); break;
}
// need wait to settle pin state
wait_us(20);
// read row data { A10, A9, A8, B15, C13, C14, C15, A2 }
data = (
(palReadPad(GPIOA, 10) << 0 ) |
(palReadPad(GPIOA, 9) << 1 ) |
(palReadPad(GPIOA, 8) << 2 ) |
(palReadPad(GPIOB, 15) << 3 ) |
(palReadPad(GPIOC, 13) << 4 ) |
(palReadPad(GPIOC, 14) << 5 ) |
(palReadPad(GPIOC, 15) << 6 ) |
(palReadPad(GPIOA, 2) << 7 )
);
// unstrobe col { B11, B10, B2, B1, A7, B0 }
switch (col) {
case 0: palClearPad(GPIOB, 11); break;
case 1: palClearPad(GPIOB, 10); break;
case 2: palClearPad(GPIOB, 2); break;
case 3: palClearPad(GPIOB, 1); break;
case 4: palClearPad(GPIOA, 7); break;
case 5: palClearPad(GPIOB, 0); break;
}
if (matrix_debouncing[col] != data) {
matrix_debouncing[col] = data;
debouncing = true;
debouncing_time = timer_read();
}
}
if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCE) {
for (int row = 0; row < MATRIX_ROWS; row++) {
matrix[row] = 0;
for (int col = 0; col < MATRIX_COLS; col++) {
matrix[row] |= ((matrix_debouncing[col] & (1 << row) ? 1 : 0) << col);
}
}
debouncing = false;
}
matrix_scan_quantum();
return 1;
}
bool matrix_is_on(uint8_t row, uint8_t col) {
return (matrix[row] & (1<<col));
}
matrix_row_t matrix_get_row(uint8_t row) {
return matrix[row];
}
void matrix_print(void) {
printf("\nr/c 01234567\n");
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
printf("%X0: ", row);
matrix_row_t data = matrix_get_row(row);
for (int col = 0; col < MATRIX_COLS; col++) {
if (data & (1<<col))
printf("1");
else
printf("0");
}
printf("\n");
}
}
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