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Diffstat (limited to 'keyboards/wheatfield/split75/matrix.c')
| -rw-r--r-- | keyboards/wheatfield/split75/matrix.c | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/keyboards/wheatfield/split75/matrix.c b/keyboards/wheatfield/split75/matrix.c deleted file mode 100644 index 9e86bfc376..0000000000 --- a/keyboards/wheatfield/split75/matrix.c +++ /dev/null @@ -1,155 +0,0 @@ -/* -Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com> - -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 <string.h> -#include <stdio.h> -#include "quantum.h" -#include "i2c_master.h" -#include "split75.h" - -#define RIGHT_HALF - - -void matrix_set_row_status(uint8_t row); - - -#if defined(RIGHT_HALF) -#define I2C_TIMEOUT 10 -#define MCP23018_TWI_ADDRESS 0b0100000 -#define TW_READ 1 -#define TW_WRITE 0 -#define TWI_ADDR_WRITE ( (MCP23018_TWI_ADDRESS<<1) | TW_WRITE ) -#define TWI_ADDR_READ ( (MCP23018_TWI_ADDRESS<<1) | TW_READ ) -#define IODIRA 0x00 // i/o direction register -#define IODIRB 0x01 -#define IODIRA 0x00 // i/o direction register -#define IODIRB 0x01 -#define GPPUA 0x0C // GPIO pull-up resistor register -#define GPPUB 0x0D -#define GPIOA 0x12 // general purpose i/o port register (write modifies OLAT) -#define GPIOB 0x13 -#define OLATA 0x14 // output latch register -#define OLATB 0x15 -#define MCP_ROWS_START 8 - -static uint8_t mcp23018_init(void) { - uint8_t ret; - uint8_t data[3]; - // set pin direction - // - unused : input : 1 - // - input : input : 1 - // - driving : output : 0 - data[0] = IODIRA; - data[1] = 0b00000000; // IODIRA - data[2] = (0b11111111); // IODIRB - - ret = i2c_transmit(TWI_ADDR_WRITE, (uint8_t *)data, 3, I2C_TIMEOUT); - if (ret) goto out; // make sure we got an ACK - - // set pull-up - // - unused : on : 1 - // - input : on : 1 - // - driving : off : 0 - data[0] = GPPUA; - data[1] = 0b00000000; // IODIRA - data[2] = (0b11111111); // IODIRB - - ret = i2c_transmit(TWI_ADDR_WRITE, (uint8_t *)data, 3, I2C_TIMEOUT); - if (ret) goto out; // make sure we got an ACK - - // set logical value (doesn't matter on inputs) - // - unused : hi-Z : 1 - // - input : hi-Z : 1 - // - driving : hi-Z : 1 - data[0] = OLATA; - data[1] = 0b11111111; // IODIRA - data[2] = (0b11111111); // IODIRB - - ret = i2c_transmit(TWI_ADDR_WRITE, (uint8_t *)data, 3, I2C_TIMEOUT); - -out: - return ret; -} -#endif - -void matrix_init_custom(void) { - // Set rows as output starting high - DDRB = 0xFF; - PORTB = 0xFF; - - // Set columns as inputs with pull-up enabled - DDRA = 0x00; - PORTA = 0xFF; - - // Initialize i2c communication - i2c_init(); - -#if defined(RIGHT_HALF) - // Initialize the chip on the other half - mcp23018_init(); -#endif - -} - -bool matrix_scan_custom(matrix_row_t current_matrix[]) { - bool matrix_has_changed = false; - - for (uint8_t row = 0; row < MATRIX_ROWS; row++) { - // Store last value of row prior to reading - matrix_row_t last_row_value = current_matrix[row]; - - matrix_row_t cols = 0; - // Select the row to scan - matrix_set_row_status(row); - - matrix_io_delay(); - //Set the local row - -#if defined(RIGHT_HALF) - // Initialize to 0x7F in case I2C read fails, - // as 0x75 would be no keys pressed - uint8_t data = 0x7F; - // Receive the columns from right half - i2c_receive(TWI_ADDR_WRITE, &data, 1, I2C_TIMEOUT); -#endif - - cols |= ((~(PINA | 0x80)) & 0x7F); -#if defined(RIGHT_HALF) - cols |= (((~(data | 0x80)) & 0x7F) << 7); -#endif - - current_matrix[row] = cols; - matrix_has_changed |= (last_row_value != current_matrix[row]); - } - - return matrix_has_changed; -} - -void matrix_set_row_status(uint8_t row) { -#if defined(RIGHT_HALF) - uint8_t txdata[3]; - - //Set the remote row on port A - txdata[0] = (GPIOA); - txdata[1] = ( 0xFF & ~(1<<row) ); - i2c_transmit(TWI_ADDR_WRITE, (uint8_t *)txdata, 2, I2C_TIMEOUT); -#endif - - //Set the local row on port B - DDRB = (1 << row); - PORTB = ~(1 << row); -} |