void i2c_init(void)
{
+ TWSR = 0; /* no prescaler */
TWBR = (uint8_t)TWBR_val;
+ //TWBR = 10;
}
uint8_t i2c_start(uint8_t address)
{
// reset TWI control register
- TWCR = 0;
- // transmit START condition
+ //TWCR = 0;
+ // transmit START condition
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
// wait for end of transmission
while( !(TWCR & (1<<TWINT)) );
-
+
// check if the start condition was successfully transmitted
- if((TWSR & 0xF8) != TW_START){ return 1; }
-
+ if(((TW_STATUS & 0xF8) != TW_START) && ((TW_STATUS & 0xF8) != TW_REP_START)){ return 1; }
+
// load slave address into data register
TWDR = address;
// start transmission of address
TWCR = (1<<TWINT) | (1<<TWEN);
// wait for end of transmission
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;
}
TWCR = (1<<TWINT) | (1<<TWEN);
// wait for end of transmission
while( !(TWCR & (1<<TWINT)) );
-
- if( (TWSR & 0xF8) != TW_MT_DATA_ACK ){ return 1; }
-
+
+ if( (TW_STATUS & 0xF8) != TW_MT_DATA_ACK ){ return 1; }
+
return 0;
}
uint8_t i2c_read_ack(void)
{
-
+
// start TWI module and acknowledge data after reception
- TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWEA);
+ TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWEA);
// wait for end of transmission
while( !(TWCR & (1<<TWINT)) );
// return received data from TWDR
uint8_t i2c_read_nack(void)
{
-
+
// start receiving without acknowledging reception
TWCR = (1<<TWINT) | (1<<TWEN);
// wait for end of transmission
uint8_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length)
{
if (i2c_start(address | I2C_WRITE)) return 1;
-
+
for (uint16_t i = 0; i < length; i++)
{
if (i2c_write(data[i])) return 1;
}
-
+
i2c_stop();
-
+
return 0;
}
uint8_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length)
{
if (i2c_start(address | I2C_READ)) return 1;
-
+
for (uint16_t i = 0; i < (length-1); i++)
{
data[i] = i2c_read_ack();
}
data[(length-1)] = i2c_read_nack();
-
+
i2c_stop();
-
+
return 0;
}
{
// transmit STOP condition
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
+ // wait until stop condition is executed and bus released
+ while(TWCR & (1<<TWSTO));
}
g_twi_transfer_buffer[1] = data;
//Transmit data until succesful
- while(i2c_transmit(addr << 1, g_twi_transfer_buffer,2) != 0);
+ //while(i2c_transmit(addr << 1, g_twi_transfer_buffer,2) != 0);
+ i2c_transmit(addr << 1, g_twi_transfer_buffer,2);
}
void IS31FL3731_write_pwm_buffer( uint8_t addr, uint8_t *pwm_buffer )
}
//Transmit buffer until succesful
- while(i2c_transmit(addr << 1, g_twi_transfer_buffer,17) != 0);
+ //while(i2c_transmit(addr << 1, g_twi_transfer_buffer,17) != 0);
+ i2c_transmit(addr << 1, g_twi_transfer_buffer,17);
+
}
}
#include QMK_KEYBOARD_H
-#include "i2cmaster.h"
-
extern inline void ergodox_board_led_on(void);
extern inline void ergodox_right_led_1_on(void);
{{3|(9<<4)}, {24.9*0, 16*2}, 0}, // LED 20
{{4|(6<<4)}, {24.9*3, 16*2}, 0}, // LED 21
- {{4|(7<<4)}, {24.9*3, 16*2}, 0}, // LED 22
+ {{4|(7<<4)}, {24.9*2, 16*2}, 0}, // LED 22
{{4|(8<<4)}, {24.9*1, 16*2}, 0}, // LED 23
{{4|(9<<4)}, {24.9*0, 16*2}, 0}, // LED 24
};