Mathias Andersson
11 years ago
1 changed files with 125 additions and 94 deletions
+ 125
- 94
keyboard/phantom/matrix.c
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| @@ -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; | |||
| } | |||
| } | |||
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