diff options
| -rw-r--r-- | keyboards/handwired/dactyl/config.h | 15 | ||||
| -rw-r--r-- | keyboards/handwired/dactyl/dactyl.c | 77 | ||||
| -rw-r--r-- | keyboards/handwired/dactyl/dactyl.h | 75 | ||||
| -rw-r--r-- | keyboards/handwired/dactyl/matrix.c | 555 |
4 files changed, 401 insertions, 321 deletions
diff --git a/keyboards/handwired/dactyl/config.h b/keyboards/handwired/dactyl/config.h index 8129b0a670..a990cc7208 100644 --- a/keyboards/handwired/dactyl/config.h +++ b/keyboards/handwired/dactyl/config.h @@ -30,12 +30,15 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. #define PRODUCT Dactyl #define DESCRIPTION An ortholinear, split, 3D-curved keyboard with thumb clusters. -/* key matrix size - * At this time, "row" in the dactyl's code actually means "column" on the - * physical keyboard. It's confusing. I'm sorry. Blame Jack Humbert :P - */ -#define MATRIX_ROWS 12 -#define MATRIX_COLS 6 +#define DIODE_DIRECTION ROW2COL +#define MATRIX_ROWS 6 +#define MATRIX_COLS 12 +#define COL_EXPANDED { true, true, true, true, true, true, false, false, false, false, false, false} +#define MATRIX_ONBOARD_ROW_PINS { F0, F1, F4, F5, F6, F7 } +#define MATRIX_ONBOARD_COL_PINS { 0, 0, 0, 0, 0, 0, B1, B2, B3, D2, D3, C6 } +#define EXPANDER_COL_REGISTER 0 +#define MATRIX_EXPANDER_COL_PINS {0, 1, 2, 3, 4, 5} +#define MATRIX_EXPANDER_ROW_PINS {0, 1, 2, 3, 4, 5} #define MOUSEKEY_INTERVAL 20 #define MOUSEKEY_DELAY 0 diff --git a/keyboards/handwired/dactyl/dactyl.c b/keyboards/handwired/dactyl/dactyl.c index abe3d9d603..81b9dce0f9 100644 --- a/keyboards/handwired/dactyl/dactyl.c +++ b/keyboards/handwired/dactyl/dactyl.c @@ -1,80 +1,15 @@ #include "dactyl.h" #include "i2cmaster.h" - -bool i2c_initialized = 0; -uint8_t mcp23018_status = 0x20; - -void matrix_init_kb(void) { - DDRB &= ~(1<<4); // set B(4) as input - PORTB &= ~(1<<4); // set B(4) internal pull-up disabled - - // unused pins - C7, D4, D5, D7, E6 - // set as input with internal pull-up enabled - DDRC &= ~(1<<7); - DDRD &= ~(1<<5 | 1<<4); - DDRE &= ~(1<<6); - PORTC |= (1<<7); - PORTD |= (1<<5 | 1<<4); - PORTE |= (1<<6); - - matrix_init_user(); -} - -uint8_t init_mcp23018(void) { - mcp23018_status = 0x20; - - // I2C subsystem - - if (i2c_initialized == 0) { - i2c_init(); // on pins D(1,0) - i2c_initialized = true; - _delay_ms(1000); - } - - // set pin direction - // - unused : input : 1 - // - input : input : 1 - // - driving : output : 0 - mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out; - mcp23018_status = i2c_write(IODIRA); if (mcp23018_status) goto out; - mcp23018_status = i2c_write(0b00000000); if (mcp23018_status) goto out; - mcp23018_status = i2c_write(0b00111111); if (mcp23018_status) goto out; - i2c_stop(); - - // set pull-up - // - unused : on : 1 - // - input : on : 1 - // - driving : off : 0 - mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out; - mcp23018_status = i2c_write(GPPUA); if (mcp23018_status) goto out; - mcp23018_status = i2c_write(0b00000000); if (mcp23018_status) goto out; - mcp23018_status = i2c_write(0b00111111); if (mcp23018_status) goto out; - -out: - i2c_stop(); - - return mcp23018_status; -} - #ifdef SWAP_HANDS_ENABLE __attribute__ ((weak)) // swap-hands action needs a matrix to define the swap const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = { - /* Left hand, matrix positions */ - {{0,11}, {1,11}, {2,11}, {3,11}, {4,11}, {5,11}}, - {{0,10}, {1,10}, {2,10}, {3,10}, {4,10}, {5,10}}, - {{0,9}, {1,9}, {2,9}, {3,9}, {4,9}, {5,9}}, - {{0,8}, {1,8}, {2,8}, {3,8}, {4,8}, {5,8}}, - {{0,7}, {1,7}, {2,7}, {3,7}, {4,7}, {5,7}}, - {{0,6}, {1,6}, {2,6}, {3,6}, {4,6}, {5,6}}, - - /* Right hand, matrix positions */ - {{0,5}, {1,5}, {2,5}, {3,5}, {4,5}, {5,5}}, - {{0,4}, {1,4}, {2,4}, {3,4}, {4,4}, {5,4}}, - {{0,3}, {1,3}, {2,3}, {3,3}, {4,3}, {5,3}}, - {{0,2}, {1,2}, {2,2}, {3,2}, {4,2}, {5,2}}, - {{0,1}, {1,1}, {2,1}, {3,1}, {4,1}, {5,1}}, - {{0,0}, {1,0}, {2,0}, {3,0}, {4,0}, {5,0}}, + {{0,11}, {0,10}, {0,9}, {0,8}, {0,7}, {0,6}, {0,5}, {0,4}, {0,3}, {0,2}, {0,1}, {0,0}}, + {{1,11}, {1,11}, {1,9}, {1,8}, {1,7}, {1,6}, {1,5}, {1,4}, {1,3}, {1,2}, {1,1}, {1,0}}, + {{2,11}, {2,12}, {2,9}, {2,8}, {2,7}, {2,6}, {2,5}, {2,4}, {2,3}, {2,2}, {2,1}, {2,0}}, + {{3,11}, {3,13}, {3,9}, {3,8}, {3,7}, {3,6}, {3,5}, {3,4}, {3,3}, {3,2}, {3,1}, {3,0}}, + {{4,11}, {4,14}, {4,9}, {4,8}, {4,7}, {4,6}, {4,5}, {4,4}, {4,3}, {4,2}, {4,1}, {4,0}}, + {{5,11}, {5,15}, {5,9}, {5,8}, {5,7}, {5,6}, {5,5}, {5,4}, {5,3}, {5,2}, {5,1}, {5,0}}, }; #endif diff --git a/keyboards/handwired/dactyl/dactyl.h b/keyboards/handwired/dactyl/dactyl.h index aa573ebd2a..3e33930e32 100644 --- a/keyboards/handwired/dactyl/dactyl.h +++ b/keyboards/handwired/dactyl/dactyl.h @@ -10,7 +10,6 @@ #define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n)) #define CPU_16MHz 0x00 -// I2C aliases and register addresses (see "mcp23018.md") #define I2C_ADDR 0b0100000 #define I2C_ADDR_WRITE ( (I2C_ADDR<<1) | I2C_WRITE ) #define I2C_ADDR_READ ( (I2C_ADDR<<1) | I2C_READ ) @@ -23,52 +22,46 @@ #define OLATA 0x14 // output latch register #define OLATB 0x15 -extern uint8_t mcp23018_status; +extern uint8_t expander_status; +extern uint8_t expander_input_pin_mask; +extern bool i2c_initialized; void init_dactyl(void); -uint8_t init_mcp23018(void); +void init_expander(void); -#define KEYMAP( \ - \ - /* left hand, spatial positions */ \ - k00,k01,k02,k03,k04,k05, \ - k10,k11,k12,k13,k14,k15, \ - k20,k21,k22,k23,k24,k25, \ - k30,k31,k32,k33,k34,k35, \ - k40,k41,k42,k43,k44, \ - k55,k50, \ - k54, \ - k53,k52,k51, \ - \ - /* right hand, spatial positions */ \ - k06,k07,k08,k09,k0A,k0B, \ - k16,k17,k18,k19,k1A,k1B, \ - k26,k27,k28,k29,k2A,k2B, \ - k36,k37,k38,k39,k3A,k3B, \ - k47,k48,k49,k4A,k4B, \ - k5B,k56, \ - k57, \ - k5A,k59,k58 ) \ - \ - /* matrix positions */ \ - { \ - { k00, k10, k20, k30, k40, k50 }, \ - { k01, k11, k21, k31, k41, k51 }, \ - { k02, k12, k22, k32, k42, k52 }, \ - { k03, k13, k23, k33, k43, k53 }, \ - { k04, k14, k24, k34, k44, k54 }, \ - { k05, k15, k25, k35, KC_NO, k55 }, \ - \ - { k06, k16, k26, k36, KC_NO, k56 }, \ - { k07, k17, k27, k37, k47, k57 }, \ - { k08, k18, k28, k38, k48, k58 }, \ - { k09, k19, k29, k39, k49, k59 }, \ - { k0A, k1A, k2A, k3A, k4A, k5A }, \ - { k0B, k1B, k2B, k3B, k4B, k5B } \ +#define KEYMAP( \ + \ + /* left hand, spatial positions */ \ + k00,k01,k02,k03,k04,k05, \ + k10,k11,k12,k13,k14,k15, \ + k20,k21,k22,k23,k24,k25, \ + k30,k31,k32,k33,k34,k35, \ + k40,k41,k42,k43,k44, \ + k55,k50, \ + k54, \ + k53,k52,k51, \ + \ + /* right hand, spatial positions */ \ + k06,k07,k08,k09,k0A,k0B, \ + k16,k17,k18,k19,k1A,k1B, \ + k26,k27,k28,k29,k2A,k2B, \ + k36,k37,k38,k39,k3A,k3B, \ + k47,k48,k49,k4A,k4B, \ + k5B,k56, \ + k57, \ + k5A,k59,k58 ) \ + \ + /* matrix positions */ \ + { \ + { k00, k01, k02, k03, k04, k05, k06, k07, k08, k09, k0A, k0B }, \ + { k10, k11, k12, k13, k14, k15, k16, k17, k18, k19, k1A, k1B }, \ + { k20, k21, k22, k23, k24, k25, k26, k27, k28, k29, k2A, k2B }, \ + { k30, k31, k32, k33, k34, k35, k36, k37, k38, k39, k3A, k3B }, \ + { k40, k41, k42, k43, k44, KC_NO, KC_NO, k47, k48, k49, k4A, k4B }, \ + { k50, k51, k52, k53, k54, k55, k56, k57, k58, k59, k5A, k5B }, \ } - #define LAYOUT_dactyl KEYMAP #endif diff --git a/keyboards/handwired/dactyl/matrix.c b/keyboards/handwired/dactyl/matrix.c index 0626f93d7f..52c76fadd4 100644 --- a/keyboards/handwired/dactyl/matrix.c +++ b/keyboards/handwired/dactyl/matrix.c @@ -1,5 +1,4 @@ /* - Copyright 2013 Oleg Kostyuk <cub.uanic@gmail.com> Copyright 2017 Erin Call <hello@erincall.com> @@ -16,10 +15,6 @@ 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/>. */ - -/* - * scan matrix - */ #include <stdint.h> #include <stdbool.h> #include <avr/io.h> @@ -31,47 +26,66 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. #include "matrix.h" #include "dactyl.h" #include "i2cmaster.h" -#ifdef DEBUG_MATRIX_SCAN_RATE -#include "timer.h" +#include "timer.h" + + +/* Set 0 if debouncing isn't needed */ + +#ifndef DEBOUNCING_DELAY +# define DEBOUNCING_DELAY 5 #endif -/* - * This constant define not debouncing time in msecs, but amount of matrix - * scan loops which should be made to get stable debounced results. - * - * On the Dactyl, the matrix scan rate is relatively low, because - * communicating with the left hand's I/O expander is slower than simply - * selecting local pins. - * 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 DEBOUNCE -# define DEBOUNCE 5 +#if (DEBOUNCING_DELAY > 0) + static uint16_t debouncing_time; + static bool debouncing = false; +#endif + +#ifdef MATRIX_MASKED + extern const matrix_row_t matrix_mask[]; +#endif + +#if (DIODE_DIRECTION == ROW2COL) || (DIODE_DIRECTION == COL2ROW) +static const uint8_t onboard_row_pins[MATRIX_ROWS] = MATRIX_ONBOARD_ROW_PINS; +static const uint8_t onboard_col_pins[MATRIX_COLS] = MATRIX_ONBOARD_COL_PINS; +static const bool col_expanded[MATRIX_COLS] = COL_EXPANDED; +static const uint8_t expander_row_pins[MATRIX_ROWS] = MATRIX_EXPANDER_ROW_PINS; +static const uint8_t expander_col_pins[MATRIX_COLS] = MATRIX_EXPANDER_COL_PINS; #endif /* matrix state(1:on, 0:off) */ static matrix_row_t matrix[MATRIX_ROWS]; -// Debouncing: store for each key the number of scans until it's eligible to -// change. When scanning the matrix, ignore any changes in keys that have -// already changed in the last DEBOUNCE scans. -static uint8_t debounce_matrix[MATRIX_ROWS * MATRIX_COLS]; - -static matrix_row_t read_cols(uint8_t row); -static void init_cols(void); -static void unselect_rows(void); -static void select_row(uint8_t row); +static matrix_row_t matrix_debouncing[MATRIX_ROWS]; + +#if (DIODE_DIRECTION == COL2ROW) + 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); +#elif (DIODE_DIRECTION == ROW2COL) + static void init_rows(void); + static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col); + static void unselect_cols(void); + static void select_col(uint8_t col); + static void unselect_col(uint8_t col); +#endif -static uint8_t mcp23018_reset_loop; +static uint8_t expander_reset_loop; +uint8_t expander_status; +uint8_t expander_input_pin_mask; +bool i2c_initialized = false; #ifdef DEBUG_MATRIX_SCAN_RATE uint32_t matrix_timer; uint32_t matrix_scan_count; #endif +#define ROW_SHIFTER ((matrix_row_t)1) +#if (DIODE_DIRECTION == COL2ROW) +// bitmask to ensure the row state from the expander only applies to its columns +#define EXPANDER_MASK ((matrix_row_t)0b00111111) +#endif __attribute__ ((weak)) void matrix_init_user(void) {} @@ -103,20 +117,20 @@ uint8_t matrix_cols(void) void matrix_init(void) { - // initialize row and col - - mcp23018_status = init_mcp23018(); - + init_expander(); +#if (DIODE_DIRECTION == COL2ROW) unselect_rows(); init_cols(); +#elif (DIODE_DIRECTION == ROW2COL) + unselect_cols(); + init_rows(); +#endif // initialize matrix state: all keys off for (uint8_t i=0; i < MATRIX_ROWS; i++) { matrix[i] = 0; - for (uint8_t j=0; j < MATRIX_COLS; ++j) { - debounce_matrix[i * MATRIX_COLS + j] = 0; - } + matrix_debouncing[i] = 0; } #ifdef DEBUG_MATRIX_SCAN_RATE @@ -125,59 +139,100 @@ void matrix_init(void) #endif matrix_init_quantum(); - } -void matrix_power_up(void) { - mcp23018_status = init_mcp23018(); - - unselect_rows(); - init_cols(); +void init_expander(void) { + if (! i2c_initialized) { + i2c_init(); + wait_us(1000000); + } - // initialize matrix state: all keys off - for (uint8_t i=0; i < MATRIX_ROWS; i++) { - matrix[i] = 0; + if (! expander_input_pin_mask) { +#if (DIODE_DIRECTION == COL2ROW) + for (int col = 0; col < MATRIX_COLS; col++) { + if (col_expanded[col]) { + expander_input_pin_mask |= (1 << expander_col_pins[col]); + } + } +#elif (DIODE_DIRECTION == ROW2COL) + for (int row = 0; row < MATRIX_ROWS; row++) { + expander_input_pin_mask |= (1 << expander_row_pins[row]); + } +#endif } -#ifdef DEBUG_MATRIX_SCAN_RATE - matrix_timer = timer_read32(); - matrix_scan_count = 0; + expander_status = i2c_start(I2C_ADDR_WRITE); if (expander_status) goto out; + expander_status = i2c_write(IODIRA); if (expander_status) goto out; + + /* + Pin direction and pull-up depends on both the diode direction + and on whether the column register is 0 ("A") or 1 ("B"): + +-------+---------------+---------------+ + | | ROW2COL | COL2ROW | + +-------+---------------+---------------+ + | Reg 0 | input, output | output, input | + +-------+---------------+---------------+ + | Reg 1 | output, input | input, output | + +-------+---------------+---------------+ + */ + +#if (EXPANDER_COLUMN_REGISTER == 0) +# if (DIODE_DIRECTION == COL2ROW) + expander_status = i2c_write(expander_input_pin_mask); if (expander_status) goto out; + expander_status = i2c_write(0); if (expander_status) goto out; +# elif (DIODE_DIRECTION == ROW2COL) + expander_status = i2c_write(0); if (expander_status) goto out; + expander_status = i2c_write(expander_input_pin_mask); if (expander_status) goto out; +# endif +#elif (EXPANDER_COLUMN_REGISTER == 1) +# if (DIODE_DIRECTION == COL2ROW) + expander_status = i2c_write(0); if (expander_status) goto out; + expander_status = i2c_write(expander_input_pin_mask); if (expander_status) goto out; +# elif (DIODE_DIRECTION == ROW2COL) + expander_status = i2c_write(expander_input_pin_mask); if (expander_status) goto out; + expander_status = i2c_write(0); if (expander_status) goto out; +# endif #endif -} -// Returns a matrix_row_t whose bits are set if the corresponding key should be -// eligible to change in this scan. -matrix_row_t debounce_mask(uint8_t row) { - matrix_row_t result = 0; - for (uint8_t j=0; j < MATRIX_COLS; ++j) { - if (debounce_matrix[row * MATRIX_COLS + j]) { - --debounce_matrix[row * MATRIX_COLS + j]; - } else { - result |= (1 << j); - } - } - return result; -} + i2c_stop(); + + // set pull-up + // - unused : off : 0 + // - input : on : 1 + // - driving : off : 0 + expander_status = i2c_start(I2C_ADDR_WRITE); if (expander_status) goto out; + expander_status = i2c_write(GPPUA); if (expander_status) goto out; +#if (EXPANDER_COLUMN_REGISTER == 0) +# if (DIODE_DIRECTION == COL2ROW) + expander_status = i2c_write(expander_input_pin_mask); if (expander_status) goto out; + expander_status = i2c_write(0); if (expander_status) goto out; +# elif (DIODE_DIRECTION == ROW2COL) + expander_status = i2c_write(0); if (expander_status) goto out; + expander_status = i2c_write(expander_input_pin_mask); if (expander_status) goto out; +# endif +#elif (EXPANDER_COLUMN_REGISTER == 1) +# if (DIODE_DIRECTION == COL2ROW) + expander_status = i2c_write(0); if (expander_status) goto out; + expander_status = i2c_write(expander_input_pin_mask); if (expander_status) goto out; +# elif (DIODE_DIRECTION == ROW2COL) + expander_status = i2c_write(expander_input_pin_mask); if (expander_status) goto out; + expander_status = i2c_write(0); if (expander_status) goto out; +# endif +#endif -// Report changed keys in the given row. Resets the debounce countdowns -// corresponding to each set bit in 'change' to DEBOUNCE. -void debounce_report(matrix_row_t change, uint8_t row) { - for (uint8_t i = 0; i < MATRIX_COLS; ++i) { - if (change & (1 << i)) { - debounce_matrix[row * MATRIX_COLS + i] = DEBOUNCE; - } - } +out: + i2c_stop(); } uint8_t matrix_scan(void) { - if (mcp23018_status) { // if there was an error - if (++mcp23018_reset_loop == 0) { - // since mcp23018_reset_loop is 8 bit - we'll try to reset once in 255 matrix scans + if (expander_status) { // if there was an error + if (++expander_reset_loop == 0) { + // since expander_reset_loop is 8 bit - we'll try to reset once in 255 matrix scans // this will be approx bit more frequent than once per second - print("trying to reset mcp23018\n"); - mcp23018_status = init_mcp23018(); - if (mcp23018_status) { + print("trying to reset expander\n"); + init_expander(); + if (expander_status) { print("left side not responding\n"); } else { print("left side attached\n"); @@ -199,37 +254,71 @@ uint8_t matrix_scan(void) } #endif - for (uint8_t i = 0; i < MATRIX_ROWS; i++) { - select_row(i); - wait_us(30); // without this wait read unstable value. - matrix_row_t mask = debounce_mask(i); - matrix_row_t cols = (read_cols(i) & mask) | (matrix[i] & ~mask); - debounce_report(cols ^ matrix[i], i); - matrix[i] = cols; - - unselect_rows(); +#if (DIODE_DIRECTION == COL2ROW) + 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 } - matrix_scan_quantum(); +#elif (DIODE_DIRECTION == ROW2COL) + for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) { +# if (DEBOUNCING_DELAY > 0) + bool matrix_changed = read_rows_on_col(matrix_debouncing, current_col); + + if (matrix_changed) { + debouncing = true; + debouncing_time = timer_read(); + } +# else + read_rows_on_col(matrix, current_col); +# endif + + } +#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) // deprecated and evidently not called. { +#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)); + return (matrix[row] & (ROW_SHIFTER << col)); } inline matrix_row_t matrix_get_row(uint8_t row) { +#ifdef MATRIX_MASKED + return matrix[row] & matrix_mask[row]; +#else return matrix[row]; +#endif } void matrix_print(void) @@ -251,143 +340,203 @@ uint8_t matrix_key_count(void) return count; } -/* Column pin configuration - * - * Teensy - * col: 0 1 2 3 4 5 - * pin: F0 F1 F4 F5 F6 F7 - * - * MCP23018 - * col: 0 1 2 3 4 5 - * pin: B5 B4 B3 B2 B1 B0 - */ -static void init_cols(void) -{ - // init on mcp23018 - // not needed, already done as part of init_mcp23018() +#if (DIODE_DIRECTION == COL2ROW) - // init on teensy - // Input with pull-up(DDR:0, PORT:1) - DDRF &= ~(1<<7 | 1<<6 | 1<<5 | 1<<4 | 1<<1 | 1<<0); - PORTF |= (1<<7 | 1<<6 | 1<<5 | 1<<4 | 1<<1 | 1<<0); +static void init_cols(void) { + for (uint8_t x = 0; x < MATRIX_COLS; x++) { + if (! col_expanded[x]) { + uint8_t pin = onboard_col_pins[x]; + _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN + _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI + } + } } -static matrix_row_t read_cols(uint8_t row) -{ - if (row < 6) { - if (mcp23018_status) { // if there was an error - return 0; - } else { - uint8_t data = 0; - mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out; - mcp23018_status = i2c_write(GPIOB); if (mcp23018_status) goto out; - mcp23018_status = i2c_start(I2C_ADDR_READ); if (mcp23018_status) goto out; - data = i2c_readNak(); - data = ~data; +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; + + // Select row and wait for row selection to stabilize + select_row(current_row); + wait_us(30); + + // Read columns from expander, unless it's in an error state + if (! expander_status) { + expander_status = i2c_start(I2C_ADDR_WRITE); if (expander_status) goto out; + expander_status = i2c_write(GPIOA); if (expander_status) goto out; + expander_status = i2c_start(I2C_ADDR_READ); if (expander_status) goto out; + + current_matrix[current_row] |= (~i2c_readNak()) & EXPANDER_MASK; + out: i2c_stop(); - return data; + } + + // Read columns from onboard pins + for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) { + if (! col_expanded[col_index]) { + uint8_t pin = onboard_col_pins[col_index]; + uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF)); + current_matrix[current_row] |= pin_state ? 0 : (ROW_SHIFTER << col_index); } - } else { - // read from teensy - return - (PINF&(1<<0) ? 0 : (1<<0)) | - (PINF&(1<<1) ? 0 : (1<<1)) | - (PINF&(1<<4) ? 0 : (1<<2)) | - (PINF&(1<<5) ? 0 : (1<<3)) | - (PINF&(1<<6) ? 0 : (1<<4)) | - (PINF&(1<<7) ? 0 : (1<<5)) ; } + + unselect_row(current_row); + + return (last_row_value != current_matrix[current_row]); } -/* Row pin configuration - * - * Teensy - * row: 6 7 8 9 10 11 - * pin: B1 B2 B3 D2 D3 C6 - * - * MCP23018 - * row: 0 1 2 3 4 5 - * pin: A0 A1 A2 A3 A4 A5 - */ -static void unselect_rows(void) -{ - // unselect on mcp23018 - if (mcp23018_status) { // if there was an error - // do nothing - } else { - // set all rows hi-Z : 1 - mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out; - mcp23018_status = i2c_write(GPIOA); if (mcp23018_status) goto out; - mcp23018_status = i2c_write(0xFF); if (mcp23018_status) goto out; +static void select_row(uint8_t row) { + // select on expander, unless it's in an error state + if (! expander_status) { + // set active row low : 0 + // set other rows hi-Z : 1 + expander_status = i2c_start(I2C_ADDR_WRITE); if (expander_status) goto out; + expander_status = i2c_write(GPIOB); if (expander_status) goto out; + expander_status = i2c_write(0xFF & ~(1<<row)); if (expander_status) goto out; out: i2c_stop(); } + // select on teensy + uint8_t pin = onboard_row_pins[row]; + _SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT + _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW +} + +static void unselect_row(uint8_t row) +{ + // No need to explicitly unselect expander pins--their I/O state is + // set simultaneously, with a single bitmask sent to i2c_write. When + // select_row selects a single pin, it implicitly unselects all the + // other ones. + // unselect on teensy - // Hi-Z(DDR:0, PORT:0) to unselect - DDRB &= ~(1<<1 | 1<<2 | 1<<3); - PORTB &= ~(1<<1 | 1<<2 | 1<<3); - DDRD &= ~(1<<2 | 1<<3); - PORTD &= ~(1<<2 | 1<<3); - DDRC &= ~(1<<6); - PORTC &= ~(1<<6); + uint8_t pin = onboard_row_pins[row]; + _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // OUT + _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // LOW +} + +static void unselect_rows(void) { + for (uint8_t x = 0; x < MATRIX_ROWS; x++) { + unselect_row(x); + } } -/* Row pin configuration - * - * Teensy - * row: 6 7 8 9 10 11 - * pin: B1 B2 B3 D2 D3 C6 - * - * MCP23018 - * row: 0 1 2 3 4 5 - * pin: A0 A1 A2 A3 A4 A5 - */ -static void select_row(uint8_t row) +#elif (DIODE_DIRECTION == ROW2COL) + +static void init_rows(void) { - if (row < 6) { - // select on mcp23018 - if (mcp23018_status) { // if there was an error + for (uint8_t x = 0; x < MATRIX_ROWS; x++) { + uint8_t pin = onboard_row_pins[x]; + _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN + _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI + } +} + +static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) +{ + bool matrix_changed = false; + + uint8_t column_state = 0; + + //select col and wait for selection to stabilize + select_col(current_col); + wait_us(30); + + if (current_col < 6) { + // read rows from expander + if (expander_status) { + // it's already in an error state; nothing we can do + return false; + } + + expander_status = i2c_start(I2C_ADDR_WRITE); if (expander_status) goto out; + expander_status = i2c_write(GPIOB); if (expander_status) goto out; + expander_status = i2c_start(I2C_ADDR_READ); if (expander_status) goto out; + column_state = i2c_readNak(); + + out: + i2c_stop(); + + column_state = ~column_state; + } else { + for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) { + if ((_SFR_IO8(onboard_row_pins[current_row] >> 4) & _BV(onboard_row_pins[current_row] & 0xF)) == 0) { + column_state |= (1 << current_row); + } + } + } + + for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) { + // Store last value of row prior to reading + matrix_row_t last_row_value = current_matrix[current_row]; + + if (column_state & (1 << current_row)) { + // key closed; set state bit in matrix + current_matrix[current_row] |= (ROW_SHIFTER << current_col); + } else { + // key open; clear state bit in matrix + current_matrix[current_row] &= ~(ROW_SHIFTER << current_col); + } + + // Determine whether the matrix changed state + if ((last_row_value != current_matrix[current_row]) && !(matrix_changed)) + { + matrix_changed = true; + } + } + + unselect_col(current_col); + + return matrix_changed; +} + +static void select_col(uint8_t col) +{ + if (col_expanded[col]) { + // select on expander + if (expander_status) { // if there was an error // do nothing } else { - // set active row low : 0 - // set other rows hi-Z : 1 - mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out; - mcp23018_status = i2c_write(GPIOA); if (mcp23018_status) goto out; - mcp23018_status = i2c_write(0xFF & ~(1<<row)); if (mcp23018_status) goto out; + // set active col low : 0 + // set other cols hi-Z : 1 + expander_status = i2c_start(I2C_ADDR_WRITE); if (expander_status) goto out; + expander_status = i2c_write(GPIOA); if (expander_status) goto out; + expander_status = i2c_write(0xFF & ~(1<<col)); if (expander_status) goto out; out: i2c_stop(); } } else { // select on teensy - // Output low(DDR:1, PORT:0) to select - switch (row) { - case 6: - DDRB |= (1<<1); - PORTB &= ~(1<<1); - break; - case 7: - DDRB |= (1<<2); - PORTB &= ~(1<<2); - break; - case 8: - DDRB |= (1<<3); - PORTB &= ~(1<<3); - break; - case 9: - DDRD |= (1<<2); - PORTD &= ~(1<<3); - break; - case 10: - DDRD |= (1<<3); - PORTD &= ~(1<<3); - break; - case 11: - DDRC |= (1<<6); - PORTC &= ~(1<<6); - break; - } + uint8_t pin = onboard_col_pins[col]; + _SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT + _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW + } +} + +static void unselect_col(uint8_t col) +{ + if (col_expanded[col]) { + // No need to explicitly unselect expander pins--their I/O state is + // set simultaneously, with a single bitmask sent to i2c_write. When + // select_col selects a single pin, it implicitly unselects all the + // other ones. + } else { + // unselect on teensy + uint8_t pin = onboard_col_pins[col]; + _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN + _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI } } +static void unselect_cols(void) +{ + for(uint8_t x = 0; x < MATRIX_COLS; x++) { + unselect_col(x); + } +} +#endif |