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Diffstat (limited to 'keyboards/handwired/promethium/matrix.c')
| -rw-r--r-- | keyboards/handwired/promethium/matrix.c | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/keyboards/handwired/promethium/matrix.c b/keyboards/handwired/promethium/matrix.c new file mode 100644 index 0000000000..2b7ce2bf5e --- /dev/null +++ b/keyboards/handwired/promethium/matrix.c @@ -0,0 +1,306 @@ +/* +Copyright 2012 Jun Wako +Copyright 2014 Jack Humbert +Copyright 2017 Priyadi Iman Nurcahyo + +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 <stdint.h> +#include <stdbool.h> +#if defined(__AVR__) +#include <avr/io.h> +#endif +#include "wait.h" +#include "print.h" +#include "debug.h" +#include "util.h" +#include "matrix.h" +#include "timer.h" + + +/* Set 0 if debouncing isn't needed */ + +#ifndef DEBOUNCING_DELAY +# define DEBOUNCING_DELAY 5 +#endif + +#if (DEBOUNCING_DELAY > 0) + static uint16_t debouncing_time; + static bool debouncing = false; +#endif + +#if (MATRIX_COLS <= 8) +# define print_matrix_header() print("\nr/c 01234567\n") +# define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row)) +# define matrix_bitpop(i) bitpop(matrix[i]) +# define ROW_SHIFTER ((uint8_t)1) +#elif (MATRIX_COLS <= 16) +# define print_matrix_header() print("\nr/c 0123456789ABCDEF\n") +# define print_matrix_row(row) print_bin_reverse16(matrix_get_row(row)) +# define matrix_bitpop(i) bitpop16(matrix[i]) +# define ROW_SHIFTER ((uint16_t)1) +#elif (MATRIX_COLS <= 32) +# define print_matrix_header() print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n") +# define print_matrix_row(row) print_bin_reverse32(matrix_get_row(row)) +# define matrix_bitpop(i) bitpop32(matrix[i]) +# define ROW_SHIFTER ((uint32_t)1) +#endif + +#ifdef MATRIX_MASKED + extern const matrix_row_t matrix_mask[]; +#endif + +static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS; +static const uint8_t tp_pins[3] = TRACKPOINT_PINS; + +/* matrix state(1:on, 0:off) */ +static matrix_row_t matrix[MATRIX_ROWS]; +static matrix_row_t matrix_debouncing[MATRIX_ROWS]; + +static void init_cols(void); +static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row); +static void unselect_rows(void); +static void select_row(uint8_t row); +static void unselect_row(uint8_t row); + +__attribute__ ((weak)) +void matrix_init_quantum(void) { + matrix_init_kb(); +} + +__attribute__ ((weak)) +void matrix_scan_quantum(void) { + matrix_scan_kb(); +} + +__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) { +} + +inline +uint8_t matrix_rows(void) { + return MATRIX_ROWS; +} + +inline +uint8_t matrix_cols(void) { + return MATRIX_COLS; +} + +void matrix_init(void) { + + // To use PORTF disable JTAG with writing JTD bit twice within four cycles. + #if (defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__) || defined(__AVR_ATmega32U4__)) + MCUCR |= _BV(JTD); + MCUCR |= _BV(JTD); + #endif + + // 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; + } + + matrix_init_quantum(); +} + +uint8_t matrix_scan(void +){ + // Set row, read cols + for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) { +# if (DEBOUNCING_DELAY > 0) + bool matrix_changed = read_cols_on_row(matrix_debouncing, current_row); + + if (matrix_changed) { + debouncing = true; + debouncing_time = timer_read(); + } + +# else + read_cols_on_row(matrix, current_row); +# endif + + } + +# if (DEBOUNCING_DELAY > 0) + if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCING_DELAY)) { + for (uint8_t i = 0; i < MATRIX_ROWS; i++) { + matrix[i] = matrix_debouncing[i]; + } + debouncing = false; + } +# endif + + matrix_scan_quantum(); + return 1; +} + +bool matrix_is_modified(void) +{ +#if (DEBOUNCING_DELAY > 0) + if (debouncing) return false; +#endif + return true; +} + +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) +{ + // Matrix mask lets you disable switches in the returned matrix data. For example, if you have a + // switch blocker installed and the switch is always pressed. +#ifdef MATRIX_MASKED + return matrix[row] & matrix_mask[row]; +#else + return matrix[row]; +#endif +} + +void matrix_print(void) +{ + print_matrix_header(); + + for (uint8_t row = 0; row < MATRIX_ROWS; row++) { + phex(row); print(": "); + print_matrix_row(row); + print("\n"); + } +} + +uint8_t matrix_key_count(void) +{ + uint8_t count = 0; + for (uint8_t i = 0; i < MATRIX_ROWS; i++) { + count += matrix_bitpop(i); + } + return count; +} + + +#define ROW_MASK 0b11100000 + +static const uint8_t row_bit[MATRIX_ROWS] = { + // 76543210 + 0b00000000, + 0b00100000, + 0b01000000, + 0b01100000, + 0b10000000, + 0b10100000, + 0b11000000, + 0b11100000, +}; + +static void init_cols(void) +{ + // columns + for(uint8_t x = 0; x < MATRIX_COLS; x++) { + uint8_t pin = col_pins[x]; + _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN + _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI + } + + // rows + DDRF |= ROW_MASK; + PORTF &= ~ROW_MASK; + + // trackpoint + for(uint8_t x = 0; x < 3; x++) { + uint8_t pin = tp_pins[x]; + _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN + _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI + } +} + +static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) + { + // Store last value of row prior to reading + matrix_row_t last_row_value = current_matrix[current_row]; + + // Clear data in matrix row + current_matrix[current_row] = 0; + + // special case for trackpoint + if (current_row == 8) { + for(uint8_t tp_index = 0; tp_index < 3; tp_index++) { + + // Select the TP pin to read (active low) + uint8_t pin = tp_pins[tp_index]; + uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF)); + + // Populate the matrix row with the state of the col pin + current_matrix[current_row] |= pin_state ? 0 : (ROW_SHIFTER << tp_index); + } + return (last_row_value != current_matrix[current_row]); + } + + // Select row and wait for row selecton to stabilize + select_row(current_row); + _delay_us(5); // without this wait it won't read stable value. + // wait_us(50); + + // For each col... + for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) { + + // Select the col pin to read (active low) + uint8_t pin = col_pins[col_index]; + uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF)); + + // Populate the matrix row with the state of the col pin + current_matrix[current_row] |= pin_state ? 0 : (ROW_SHIFTER << col_index); + } + + // Unselect row + unselect_row(current_row); + + return (last_row_value != current_matrix[current_row]); +} + +static void select_row(uint8_t row) +{ + PORTF = row_bit[row] | (PORTF & ~ROW_MASK); +} + +static void unselect_row(uint8_t row) +{ +} + +static void unselect_rows(void) +{ +} + |