diff options
Diffstat (limited to 'keyboard/phantom')
| -rw-r--r-- | keyboard/phantom/matrix.c | 219 |
1 files changed, 125 insertions, 94 deletions
diff --git a/keyboard/phantom/matrix.c b/keyboard/phantom/matrix.c index 92db6817c0..e9606ef5d5 100644 --- a/keyboard/phantom/matrix.c +++ b/keyboard/phantom/matrix.c @@ -27,91 +27,10 @@ static uint8_t debouncing = DEBOUNCE; static matrix_row_t matrix[MATRIX_ROWS]; static matrix_row_t matrix_debouncing[MATRIX_ROWS]; - -#define _DDRA (uint8_t *const)&DDRA -#define _DDRB (uint8_t *const)&DDRB -#define _DDRC (uint8_t *const)&DDRC -#define _DDRD (uint8_t *const)&DDRD -#define _DDRE (uint8_t *const)&DDRE -#define _DDRF (uint8_t *const)&DDRF - -#define _PINA (uint8_t *const)&PINA -#define _PINB (uint8_t *const)&PINB -#define _PINC (uint8_t *const)&PINC -#define _PIND (uint8_t *const)&PIND -#define _PINE (uint8_t *const)&PINE -#define _PINF (uint8_t *const)&PINF - -#define _PORTA (uint8_t *const)&PORTA -#define _PORTB (uint8_t *const)&PORTB -#define _PORTC (uint8_t *const)&PORTC -#define _PORTD (uint8_t *const)&PORTD -#define _PORTE (uint8_t *const)&PORTE -#define _PORTF (uint8_t *const)&PORTF - -#define _BIT0 0x01 -#define _BIT1 0x02 -#define _BIT2 0x04 -#define _BIT3 0x08 -#define _BIT4 0x10 -#define _BIT5 0x20 -#define _BIT6 0x40 -#define _BIT7 0x80 - -/* Specifies the ports and pin numbers for the rows */ -static -uint8_t *const row_ddr[MATRIX_ROWS] = {_DDRB, _DDRB, _DDRB, _DDRB, _DDRB, _DDRB}; - -static -uint8_t *const row_port[MATRIX_ROWS] = {_PORTB, _PORTB, _PORTB, _PORTB, _PORTB, _PORTB}; - -static -uint8_t *const row_pin[MATRIX_ROWS] = {_PINB, _PINB, _PINB, _PINB, _PINB, _PINB}; - -static -const uint8_t row_bit[MATRIX_ROWS] = { _BIT0, _BIT1, _BIT2, _BIT3, _BIT4, _BIT5}; - -/* Specifies the ports and pin numbers for the columns */ -static -uint8_t *const col_ddr[MATRIX_COLS] = { _DDRD, _DDRC, _DDRC, _DDRD, _DDRD, _DDRE, - _DDRF, _DDRF, _DDRF, _DDRF, _DDRF, _DDRF, - _DDRD, _DDRD, _DDRD, _DDRD, _DDRD}; - -static -uint8_t *const col_port[MATRIX_COLS] = {_PORTD, _PORTC, _PORTC, _PORTD, _PORTD, _PORTE, - _PORTF, _PORTF, _PORTF, _PORTF, _PORTF, _PORTF, - _PORTD, _PORTD, _PORTD, _PORTD, _PORTD}; - -static -const uint8_t col_bit[MATRIX_COLS] = { _BIT5, _BIT7, _BIT6, _BIT4, _BIT0, _BIT6, - _BIT0, _BIT1, _BIT4, _BIT5, _BIT6, _BIT7, - _BIT7, _BIT6, _BIT1, _BIT2, _BIT3}; - -static -inline void pull_column(int col) { - *col_port[col] &= ~col_bit[col]; -} - -static -inline void release_column(int col) { - *col_port[col] |= col_bit[col]; -} - -/* PORTB is set as input with pull-up resistors - PORTC,D,E,F are set to high output */ - -static -void setup_io_pins(void) { - uint8_t row, col; - for(row = 0; row < MATRIX_ROWS; row++) { - *row_ddr[row] &= ~row_bit[row]; - *row_port[row] |= row_bit[row]; - } - for(col = 0; col < MATRIX_COLS; col++) { - *col_ddr[col] |= col_bit[col]; - *col_port[col] |= col_bit[col]; - } -} +static uint8_t read_rows(void); +static void init_rows(void); +static void unselect_cols(void); +static void select_col(uint8_t col); /* LEDs are on output compare pins OC1B OC1C This activates fast PWM mode on them. @@ -158,7 +77,8 @@ void matrix_init(void) MCUCR |= (1<<JTD); // initialize row and col - setup_io_pins(); + unselect_cols(); + init_rows(); setup_leds(); // initialize matrix state: all keys off @@ -171,11 +91,12 @@ void matrix_init(void) uint8_t matrix_scan(void) { for (uint8_t col = 0; col < MATRIX_COLS; col++) { // 0-16 - pull_column(col); // output hi on theline + select_col(col); _delay_us(3); // without this wait it won't read stable value. + uint8_t rows = read_rows(); for (uint8_t row = 0; row < MATRIX_ROWS; row++) { // 0-5 bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col); - bool curr_bit = !(*row_pin[row] & row_bit[row]); + bool curr_bit = rows & (1<<row); if (prev_bit != curr_bit) { matrix_debouncing[row] ^= ((matrix_row_t)1<<col); if (debouncing) { @@ -184,7 +105,7 @@ uint8_t matrix_scan(void) debouncing = DEBOUNCE; } } - release_column(col); + unselect_cols(); } if (debouncing) { @@ -202,7 +123,7 @@ uint8_t matrix_scan(void) bool matrix_is_modified(void) { - // NOTE: no longer used + if (debouncing) return false; return true; } @@ -232,10 +153,120 @@ uint8_t matrix_key_count(void) { uint8_t count = 0; for (uint8_t i = 0; i < MATRIX_ROWS; i++) { - for (uint8_t j = 0; j < MATRIX_COLS; j++) { - if (matrix_is_on(i, j)) - count++; - } + count += bitpop32(matrix[i]); } return count; } + +/* Row pin configuration + * row: 0 1 2 3 4 5 + * pin: B0 B1 B2 B3 B4 B5 + */ +static void init_rows(void) +{ + // Input with pull-up(DDR:0, PORT:1) + DDRB &= ~0b00111111; + PORTB |= 0b00111111; +} + +static uint8_t read_rows(void) +{ + return (PINB&(1<<0) ? 0 : (1<<0)) | + (PINB&(1<<1) ? 0 : (1<<1)) | + (PINB&(1<<2) ? 0 : (1<<2)) | + (PINB&(1<<3) ? 0 : (1<<3)) | + (PINB&(1<<4) ? 0 : (1<<4)) | + (PINB&(1<<5) ? 0 : (1<<5)); +} + +/* Column pin configuration + * col: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 + * pin: D5 C7 C6 D4 D0 E6 F0 F1 F4 F5 F6 F7 D7 D6 D1 D2 D3 + */ +static void unselect_cols(void) +{ + // Hi-Z(DDR:0, PORT:0) to unselect + DDRC |= 0b11000000; // PC: 7 6 + PORTC |= 0b11000000; + DDRD |= 0b11111111; // PD: 7 6 5 4 3 2 1 0 + PORTD |= 0b11111111; + DDRE |= 0b01000000; // PE: 6 + PORTE |= 0b01000000; + DDRF |= 0b11110011; // PF: 7 6 5 4 1 0 + PORTF |= 0b11110011; +} + +static void select_col(uint8_t col) +{ + // Output low(DDR:1, PORT:0) to select + switch (col) { + case 0: + DDRD |= (1<<5); + PORTD &= ~(1<<5); + break; + case 1: + DDRC |= (1<<7); + PORTC &= ~(1<<7); + break; + case 2: + DDRC |= (1<<6); + PORTC &= ~(1<<6); + break; + case 3: + DDRD |= (1<<4); + PORTD &= ~(1<<4); + break; + case 4: + DDRD |= (1<<0); + PORTD &= ~(1<<0); + break; + case 5: + DDRE |= (1<<6); + PORTE &= ~(1<<6); + break; + case 6: + DDRF |= (1<<0); + PORTF &= ~(1<<0); + break; + case 7: + DDRF |= (1<<1); + PORTF &= ~(1<<1); + break; + case 8: + DDRF |= (1<<4); + PORTF &= ~(1<<4); + break; + case 9: + DDRF |= (1<<5); + PORTF &= ~(1<<5); + break; + case 10: + DDRF |= (1<<6); + PORTF &= ~(1<<6); + break; + case 11: + DDRF |= (1<<7); + PORTF &= ~(1<<7); + break; + case 12: + DDRD |= (1<<7); + PORTD &= ~(1<<7); + break; + case 13: + DDRD |= (1<<6); + PORTD &= ~(1<<6); + break; + case 14: + DDRD |= (1<<1); + PORTD &= ~(1<<1); + break; + case 15: + DDRD |= (1<<2); + PORTD &= ~(1<<2); + break; + case 16: + DDRD |= (1<<3); + PORTD &= ~(1<<3); + break; + } +} |