* Update ps2avrgb template to use standard matrix/i2c code * Default to an 8x11 matrix in the ps2avrgb templatepull/5561/head
@ -1,106 +0,0 @@ | |||||
/* | |||||
Copyright 2016 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/>. | |||||
*/ | |||||
// Please do not modify this file | |||||
#include <avr/io.h> | |||||
#include <util/twi.h> | |||||
#include "i2c.h" | |||||
void i2c_set_bitrate(uint16_t bitrate_khz) { | |||||
uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz); | |||||
if (bitrate_div >= 16) { | |||||
bitrate_div = (bitrate_div - 16) / 2; | |||||
} | |||||
TWBR = bitrate_div; | |||||
} | |||||
void i2c_init(void) { | |||||
// set pull-up resistors on I2C bus pins | |||||
PORTC |= 0b11; | |||||
i2c_set_bitrate(400); | |||||
// enable TWI (two-wire interface) | |||||
TWCR |= (1 << TWEN); | |||||
// enable TWI interrupt and slave address ACK | |||||
TWCR |= (1 << TWIE); | |||||
TWCR |= (1 << TWEA); | |||||
} | |||||
uint8_t i2c_start(uint8_t address) { | |||||
// reset TWI control register | |||||
TWCR = 0; | |||||
// begin transmission and wait for it to end | |||||
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN); | |||||
while (!(TWCR & (1<<TWINT))); | |||||
// check if the start condition was successfully transmitted | |||||
if ((TWSR & 0xF8) != TW_START) { | |||||
return 1; | |||||
} | |||||
// transmit address and wait | |||||
TWDR = address; | |||||
TWCR = (1<<TWINT) | (1<<TWEN); | |||||
while (!(TWCR & (1<<TWINT))); | |||||
// check if the device has acknowledged the READ / WRITE mode | |||||
uint8_t twst = TW_STATUS & 0xF8; | |||||
if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) { | |||||
return 1; | |||||
} | |||||
return 0; | |||||
} | |||||
void i2c_stop(void) { | |||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); | |||||
} | |||||
uint8_t i2c_write(uint8_t data) { | |||||
TWDR = data; | |||||
// transmit data and wait | |||||
TWCR = (1<<TWINT) | (1<<TWEN); | |||||
while (!(TWCR & (1<<TWINT))); | |||||
if ((TWSR & 0xF8) != TW_MT_DATA_ACK) { | |||||
return 1; | |||||
} | |||||
return 0; | |||||
} | |||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) { | |||||
if (i2c_start(address)) { | |||||
return 1; | |||||
} | |||||
for (uint16_t i = 0; i < length; i++) { | |||||
if (i2c_write(data[i])) { | |||||
return 1; | |||||
} | |||||
} | |||||
i2c_stop(); | |||||
return 0; | |||||
} |
@ -1,27 +0,0 @@ | |||||
/* | |||||
Copyright 2016 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/>. | |||||
*/ | |||||
// Please do not modify this file | |||||
#ifndef __I2C_H__ | |||||
#define __I2C_H__ | |||||
void i2c_init(void); | |||||
void i2c_set_bitrate(uint16_t bitrate_khz); | |||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length); | |||||
#endif |
@ -1,112 +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 <avr/io.h> | |||||
#include <util/delay.h> | |||||
#include "matrix.h" | |||||
#ifndef DEBOUNCE | |||||
# define DEBOUNCE 5 | |||||
#endif | |||||
static uint8_t debouncing = DEBOUNCE; | |||||
static matrix_row_t matrix[MATRIX_ROWS]; | |||||
static matrix_row_t matrix_debouncing[MATRIX_ROWS]; | |||||
void matrix_set_row_status(uint8_t row); | |||||
uint8_t bit_reverse(uint8_t x); | |||||
void matrix_init(void) { | |||||
// all outputs for rows high | |||||
DDRB = 0xFF; | |||||
PORTB = 0xFF; | |||||
// all inputs for columns | |||||
DDRA = 0x00; | |||||
DDRC &= ~(0x111111<<2); | |||||
DDRD &= ~(1<<PIND7); | |||||
// all columns are pulled-up | |||||
PORTA = 0xFF; | |||||
PORTC |= (0b111111<<2); | |||||
PORTD |= (1<<PIND7); | |||||
// initialize matrix state: all keys off | |||||
for (uint8_t row = 0; row < MATRIX_ROWS; row++) { | |||||
matrix[row] = 0x00; | |||||
matrix_debouncing[row] = 0x00; | |||||
} | |||||
matrix_init_quantum(); | |||||
} | |||||
uint8_t matrix_scan(void) { | |||||
for (uint8_t row = 0; row < MATRIX_ROWS; row++) { | |||||
matrix_set_row_status(row); | |||||
_delay_us(5); | |||||
matrix_row_t cols = ( | |||||
// cols 0..7, PORTA 0 -> 7 | |||||
(~PINA) & 0xFF | |||||
) | ( | |||||
// cols 8..13, PORTC 7 -> 0 | |||||
bit_reverse((~PINC) & 0xFF) << 8 | |||||
) | ( | |||||
// col 14, PORTD 7 | |||||
((~PIND) & (1 << PIND7)) << 7 | |||||
); | |||||
if (matrix_debouncing[row] != cols) { | |||||
matrix_debouncing[row] = cols; | |||||
debouncing = DEBOUNCE; | |||||
} | |||||
} | |||||
if (debouncing) { | |||||
if (--debouncing) { | |||||
_delay_ms(1); | |||||
} else { | |||||
for (uint8_t i = 0; i < MATRIX_ROWS; i++) { | |||||
matrix[i] = matrix_debouncing[i]; | |||||
} | |||||
} | |||||
} | |||||
matrix_scan_quantum(); | |||||
return 1; | |||||
} | |||||
// declarations | |||||
void matrix_set_row_status(uint8_t row) { | |||||
DDRB = (1 << row); | |||||
PORTB = ~(1 << row); | |||||
} | |||||
uint8_t bit_reverse(uint8_t x) { | |||||
x = ((x >> 1) & 0x55) | ((x << 1) & 0xaa); | |||||
x = ((x >> 2) & 0x33) | ((x << 2) & 0xcc); | |||||
x = ((x >> 4) & 0x0f) | ((x << 4) & 0xf0); | |||||
return x; | |||||
} | |||||
inline matrix_row_t matrix_get_row(uint8_t row) { | |||||
return matrix[row]; | |||||
} | |||||
void matrix_print(void) { | |||||
} |