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author | Christopher Browne <cbbrowne@ca.afilias.info> | 2016-07-04 18:32:08 +0200 |
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committer | Christopher Browne <cbbrowne@ca.afilias.info> | 2016-07-04 18:32:08 +0200 |
commit | 2e1cfaf73fccdfaba2d7542f00bd7c3d49998d5d (patch) | |
tree | 9d8e9c6b71116f01c56c870a9e1071760899ff77 /quantum/matrix.c | |
parent | 44a5f7630f18b40b36270d49449a43cd42b802f0 (diff) | |
parent | 9e01b219f32b0086728c10658928b8bffcc26ef7 (diff) | |
download | qmk_firmware-2e1cfaf73fccdfaba2d7542f00bd7c3d49998d5d.tar.gz qmk_firmware-2e1cfaf73fccdfaba2d7542f00bd7c3d49998d5d.tar.xz |
Merge branch 'master' of https://github.com/jackhumbert/qmk_firmware
Diffstat (limited to 'quantum/matrix.c')
-rw-r--r-- | quantum/matrix.c | 294 |
1 files changed, 165 insertions, 129 deletions
diff --git a/quantum/matrix.c b/quantum/matrix.c index f5744658c..094917025 100644 --- a/quantum/matrix.c +++ b/quantum/matrix.c @@ -17,39 +17,55 @@ 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" -#ifdef MATRIX_HAS_GHOST -# error "The universal matrix.c file cannot be used for this keyboard." -#endif +/* Set 0 if debouncing isn't needed */ +/* + * This constant define not debouncing time in msecs, but amount of matrix + * scan loops which should be made to get stable debounced results. + * + * On Ergodox matrix scan rate is relatively low, because of slow I2C. + * Now it's only 317 scans/second, or about 3.15 msec/scan. + * According to Cherry specs, debouncing time is 5 msec. + * + * And so, there is no sense to have DEBOUNCE higher than 2. + */ #ifndef DEBOUNCING_DELAY # define DEBOUNCING_DELAY 5 #endif +static uint8_t debouncing = DEBOUNCING_DELAY; static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS; static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS; -/* matrix state */ -#if DIODE_DIRECTION == COL2ROW + +/* matrix state(1:on, 0:off) */ static matrix_row_t matrix[MATRIX_ROWS]; -#else -static matrix_col_t matrix[MATRIX_COLS]; +static matrix_row_t matrix_debouncing[MATRIX_ROWS]; + +#if DIODE_DIRECTION == ROW2COL + static matrix_row_t matrix_reversed[MATRIX_COLS]; + static matrix_row_t matrix_reversed_debouncing[MATRIX_COLS]; #endif -static int8_t debouncing_delay = -1; -#if DIODE_DIRECTION == COL2ROW -static void toggle_row(uint8_t row); -static matrix_row_t read_cols(void); +#if MATRIX_COLS > 16 + #define SHIFTER 1UL #else -static void toggle_col(uint8_t col); -static matrix_col_t read_rows(void); + #define SHIFTER 1 #endif +static matrix_row_t read_cols(void); +static void init_cols(void); +static void unselect_rows(void); +static void select_row(uint8_t row); + __attribute__ ((weak)) void matrix_init_quantum(void) { matrix_init_kb(); @@ -78,10 +94,12 @@ __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; } @@ -111,161 +129,179 @@ uint8_t matrix_cols(void) { // } void matrix_init(void) { - /* frees PORTF by setting the JTD bit twice within four cycles */ + // To use PORTF disable JTAG with writing JTD bit twice within four cycles. #ifdef __AVR_ATmega32U4__ MCUCR |= _BV(JTD); MCUCR |= _BV(JTD); #endif - /* initializes the I/O pins */ -#if DIODE_DIRECTION == COL2ROW - for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) { - /* DDRxn */ - _SFR_IO8((row_pins[r] >> 4) + 1) |= _BV(row_pins[r] & 0xF); - toggle_row(r); - } - for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) { - /* PORTxn */ - _SFR_IO8((col_pins[c] >> 4) + 2) |= _BV(col_pins[c] & 0xF); - } -#else - for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) { - /* DDRxn */ - _SFR_IO8((col_pins[c] >> 4) + 1) |= _BV(col_pins[c] & 0xF); - toggle_col(c); - } - for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) { - /* PORTxn */ - _SFR_IO8((row_pins[r] >> 4) + 2) |= _BV(row_pins[r] & 0xF); + + // 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; } -#endif + matrix_init_quantum(); } +uint8_t matrix_scan(void) +{ + #if DIODE_DIRECTION == COL2ROW -uint8_t matrix_scan(void) { - static matrix_row_t debouncing_matrix[MATRIX_ROWS]; - for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) { - toggle_row(r); - matrix_row_t state = read_cols(); - if (debouncing_matrix[r] != state) { - debouncing_matrix[r] = state; - debouncing_delay = DEBOUNCING_DELAY; - } - toggle_row(r); - } - if (debouncing_delay >= 0) { - dprintf("Debouncing delay remaining: %X\n", debouncing_delay); - --debouncing_delay; - if (debouncing_delay >= 0) { - wait_ms(1); - } - else { - for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) { - matrix[r] = debouncing_matrix[r]; + for (uint8_t i = 0; i < MATRIX_ROWS; i++) { + select_row(i); + wait_us(30); // without this wait read unstable value. + matrix_row_t cols = read_cols(); + if (matrix_debouncing[i] != cols) { + matrix_debouncing[i] = cols; + if (debouncing) { + debug("bounce!: "); debug_hex(debouncing); debug("\n"); } + debouncing = DEBOUNCING_DELAY; } + unselect_rows(); } - matrix_scan_quantum(); - return 1; -} - -static void toggle_row(uint8_t row) { - /* PINxn */ - _SFR_IO8((row_pins[row] >> 4)) = _BV(row_pins[row] & 0xF); -} -static matrix_row_t read_cols(void) { - matrix_row_t state = 0; - for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) { - /* PINxn */ - if (!(_SFR_IO8((col_pins[c] >> 4)) & _BV(col_pins[c] & 0xF))) { - state |= (matrix_row_t)1 << c; + if (debouncing) { + if (--debouncing) { + wait_us(1); + } else { + for (uint8_t i = 0; i < MATRIX_ROWS; i++) { + matrix[i] = matrix_debouncing[i]; + } } } - return state; -} - -matrix_row_t matrix_get_row(uint8_t row) { - return matrix[row]; -} - #else -uint8_t matrix_scan(void) { - static matrix_col_t debouncing_matrix[MATRIX_COLS]; - for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) { - toggle_col(c); - matrix_col_t state = read_rows(); - if (debouncing_matrix[c] != state) { - debouncing_matrix[c] = state; - debouncing_delay = DEBOUNCING_DELAY; + for (uint8_t i = 0; i < MATRIX_COLS; i++) { + select_row(i); + wait_us(30); // without this wait read unstable value. + matrix_row_t rows = read_cols(); + if (matrix_reversed_debouncing[i] != rows) { + matrix_reversed_debouncing[i] = rows; + if (debouncing) { + debug("bounce!: "); debug_hex(debouncing); debug("\n"); + } + debouncing = DEBOUNCING_DELAY; } - toggle_col(c); + unselect_rows(); } - if (debouncing_delay >= 0) { - dprintf("Debouncing delay remaining: %X\n", debouncing_delay); - --debouncing_delay; - if (debouncing_delay >= 0) { - wait_ms(1); - } - else { - for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) { - matrix[c] = debouncing_matrix[c]; + + if (debouncing) { + if (--debouncing) { + wait_us(1); + } else { + for (uint8_t i = 0; i < MATRIX_COLS; i++) { + matrix_reversed[i] = matrix_reversed_debouncing[i]; } } } + for (uint8_t y = 0; y < MATRIX_ROWS; y++) { + matrix_row_t row = 0; + for (uint8_t x = 0; x < MATRIX_COLS; x++) { + row |= ((matrix_reversed[x] & (1<<y)) >> y) << x; + } + matrix[y] = row; + } +#endif + matrix_scan_quantum(); + return 1; } -static void toggle_col(uint8_t col) { - /* PINxn */ - _SFR_IO8((col_pins[col] >> 4)) = _BV(col_pins[col] & 0xF); +bool matrix_is_modified(void) +{ + if (debouncing) return false; + return true; } -static matrix_col_t read_rows(void) { - matrix_col_t state = 0; - for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) { - /* PINxn */ - if (!(_SFR_IO8((row_pins[r] >> 4)) & _BV(row_pins[r] & 0xF))) { - state |= (matrix_col_t)1 << r; - } +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) +{ + return matrix[row]; +} + +void matrix_print(void) +{ + print("\nr/c 0123456789ABCDEF\n"); + for (uint8_t row = 0; row < MATRIX_ROWS; row++) { + phex(row); print(": "); + pbin_reverse16(matrix_get_row(row)); + print("\n"); } - return state; } -matrix_row_t matrix_get_row(uint8_t row) { - matrix_row_t state = 0; - matrix_col_t mask = (matrix_col_t)1 << row; - for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) { - if (matrix[c] & mask) { - state |= (matrix_row_t)1 << c; - } +uint8_t matrix_key_count(void) +{ + uint8_t count = 0; + for (uint8_t i = 0; i < MATRIX_ROWS; i++) { + count += bitpop16(matrix[i]); } - return state; + return count; } +static void init_cols(void) +{ +#if DIODE_DIRECTION == COL2ROW + for(int x = 0; x < MATRIX_COLS; x++) { + int pin = col_pins[x]; +#else + for(int x = 0; x < MATRIX_ROWS; x++) { + int pin = row_pins[x]; #endif - -bool matrix_is_modified(void) { - if (debouncing_delay >= 0) return false; - return true; + _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); + _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); + } } -bool matrix_is_on(uint8_t row, uint8_t col) { - return matrix_get_row(row) & (matrix_row_t)1 << col; -} +static matrix_row_t read_cols(void) +{ + matrix_row_t result = 0; -void matrix_print(void) { - dprintln("Human-readable matrix state:"); - for (uint8_t r = 0; r < MATRIX_ROWS; r++) { - dprintf("State of row %X: %016b\n", r, bitrev16(matrix_get_row(r))); +#if DIODE_DIRECTION == COL2ROW + for(int x = 0; x < MATRIX_COLS; x++) { + int pin = col_pins[x]; +#else + for(int x = 0; x < MATRIX_ROWS; x++) { + int pin = row_pins[x]; +#endif + result |= (_SFR_IO8(pin >> 4) & _BV(pin & 0xF)) ? 0 : (SHIFTER << x); } + return result; } -uint8_t matrix_key_count(void) { - uint8_t count = 0; - for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) { - count += bitpop16(matrix_get_row(r)); +static void unselect_rows(void) +{ +#if DIODE_DIRECTION == COL2ROW + for(int x = 0; x < MATRIX_ROWS; x++) { + int pin = row_pins[x]; +#else + for(int x = 0; x < MATRIX_COLS; x++) { + int pin = col_pins[x]; +#endif + _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); + _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); } - return count; +} + +static void select_row(uint8_t row) +{ + +#if DIODE_DIRECTION == COL2ROW + int pin = row_pins[row]; +#else + int pin = col_pins[row]; +#endif + _SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); + _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); } |