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#include "quantum.h"
static uint8_t debouncing = DEBOUNCE;
static matrix_row_t matrix[MATRIX_ROWS];
static matrix_row_t matrix_debouncing[MATRIX_ROWS];
static uint8_t read_rows(void);
static void init_rows(void);
static void init_cols(void);
static void unselect_cols(void);
static void select_col(uint8_t col);
__attribute__ ((weak))
void matrix_init_kb(void)
{
matrix_init_user();
}
__attribute__ ((weak))
void matrix_scan_kb(void)
{
matrix_scan_user();
}
__attribute__ ((weak))
void matrix_init_user(void) {}
__attribute__ ((weak))
void matrix_scan_user(void) {}
void matrix_init(void)
{
//setPinOutput(F0);
//writePinHigh(F0);
setPinOutput(B4);
writePinLow(B4);
init_cols();
init_rows();
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
matrix[i] = 0;
matrix_debouncing[i] = 0;
}
matrix_init_quantum();
}
uint8_t matrix_scan(void)
{
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
select_col(col);
_delay_us(3);
uint8_t rows = read_rows();
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col);
bool curr_bit = rows & (1<<row);
if (prev_bit != curr_bit) {
matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
debouncing = DEBOUNCE;
}
}
unselect_cols();
}
if (debouncing) {
if (--debouncing) {
_delay_ms(1);
} else {
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
matrix[i] = matrix_debouncing[i];
}
}
}
matrix_scan_quantum();
return 1;
}
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++) {
xprintf("%02X: %032lb\n", row, bitrev32(matrix_get_row(row)));
}
}
/*
* Row pin configuration
* row: 0 1 2 3 4
* pin: PE6 PF6 PF7 PB7 PD4
*/
static void init_rows(void)
{
setPinInputHigh(E6);
setPinInputHigh(F6);
setPinInputHigh(F7);
setPinInputHigh(B7);
setPinInputHigh(D4);
}
static uint8_t read_rows()
{
return ((readPin(E6) ? 0 : (1 << 0)) |
(readPin(F6) ? 0 : (1 << 1)) |
(readPin(F7) ? 0 : (1 << 2)) |
(readPin(B7) ? 0 : (1 << 3)) |
(readPin(D4) ? 0 : (1 << 4)));
}
/*
* Columns 0 - 13
* These columns uses two 74LVC138 3 to 8 bit demultiplexers.
* EN Pin, PF5, PD6
*
* col / pin: PF0 PF1 PF4
* 0: 0 0 0
* 1: 1 0 0
* 2: 0 1 0
* 3: 1 1 0
* 4: 0 0 1
* 5: 1 0 1
* 6: 0 1 1
* PD2 PD3 PD5
* 7: 0 0 0
* 8: 1 0 0
* 9: 0 1 0
* 10: 1 1 0
* 11: 0 0 1
* 12: 1 0 1
* 13: 0 1 1
*
*/
static void init_cols(void)
{
setPinOutput(F0);
setPinOutput(F1);
setPinOutput(F4);
setPinOutput(F5);
setPinOutput(D2);
setPinOutput(D3);
setPinOutput(D5);
setPinOutput(D6);
unselect_cols();
}
static void unselect_cols(void)
{
writePinHigh(F0);
writePinHigh(F1);
writePinHigh(F4);
writePinHigh(F5);
writePinHigh(D2);
writePinHigh(D3);
writePinHigh(D5);
writePinHigh(D6);
}
static void select_col(uint8_t col) {
switch (col) {
case 0:
writePinLow(F0);
writePinLow(F1);
writePinLow(F4);
break;
case 1:
writePinHigh(F0);
writePinLow(F1);
writePinLow(F4);
break;
case 2:
writePinLow(F0);
writePinHigh(F1);
writePinLow(F4);
break;
case 3:
writePinHigh(F0);
writePinHigh(F1);
writePinLow(F4);
break;
case 4:
writePinLow(F0);
writePinLow(F1);
writePinHigh(F4);
break;
case 5:
writePinHigh(F0);
writePinLow(F1);
writePinHigh(F4);
break;
case 6:
writePinLow(F0);
writePinHigh(F1);
writePinHigh(F4);
break;
case 7:
writePinLow(D2);
writePinLow(D3);
writePinLow(D5);
break;
case 8:
writePinHigh(D2);
writePinLow(D3);
writePinLow(D5);
break;
case 9:
writePinLow(D2);
writePinHigh(D3);
writePinLow(D5);
break;
case 10:
writePinHigh(D2);
writePinHigh(D3);
writePinLow(D5);
break;
case 11:
writePinLow(D2);
writePinLow(D3);
writePinHigh(D5);
break;
case 12:
writePinHigh(D2);
writePinLow(D3);
writePinHigh(D5);
break;
case 13:
writePinLow(D2);
writePinHigh(D3);
writePinHigh(D5);
break;
}
}
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