uint8_t gyro_read_reg(uint8_t addr)
{
uint8_t result2;
__disable_irq();
i2c1_start();
i2c1_write_byte(GYRO_I2C2_ADDRESS | I2C1_WRITE);
i2c1_wait();
i2c1_get_ack();
i2c1_write_byte(addr);
i2c1_wait();
i2c1_get_ack();
i2c1_repeated_start();
i2c1_write_byte(GYRO_I2C2_ADDRESS | I2C1_READ);
i2c1_wait();
i2c1_get_ack();
i2c1_set_rx_mode();
i2c1_give_nack();
result2 = i2c1_read_byte();
i2c1_wait();
i2c1_get_ack();
i2c1_stop();
result2 = i2c1_read_byte();
pause();
__enable_irq();
return result2;
}
int main(void) {
int delay;
int ack, temperature;
i2c1_init(TC74_CLK_FREQ);
while(1) {
//start event
i2c1_start();
//send write addr
ack = i2c1_send(ADDR_WR);
//command (read temp)
i2c1_send(RTR);
//start event
i2c1_start();
//send read addr
ack += i2c1_send(ADDR_RD);
//printInt10(ack);
if (ack != 0) {
i2c1_stop();
printStr("An error has ocurred, exiting.\n");
} else {
printStr("\nReading temperature: ");
temperature = i2c1_receive(I2C_NACK);
i2c1_stop();
printInt10(temperature);
}
//delay 250ms
delay = readCoreTimer();
while (readCoreTimer() - delay < 5000000);
}
return 0;
}
int getTemperature(int *temperature){
int ack;
i2c1_init(TC74_CLK_FREQ);
// Send Start event
i2c1_start();
// Send Address + WR (ADDR_WR) and copy return value to "ack" variable ...(see exercise 7, function main())...
ack = i2c1_send(ADDR_WR);
ack += i2c1_send(RTR);
i2c1_start();
ack += i2c1_send(ADDR_RD);
*temperature = i2c1_receive(I2C_NACK);
// Send Stop event
i2c1_stop();
return ack;
}
void gyro_write_reg(uint8_t addr, uint8_t data)
{
__disable_irq();
i2c1_start();
i2c1_write_byte( GYRO_I2C2_ADDRESS|I2C1_WRITE);
i2c1_wait();
i2c1_get_ack();
i2c1_write_byte(addr);
i2c1_wait();
i2c1_get_ack();
i2c1_write_byte(data);
i2c1_wait();
i2c1_get_ack();
i2c1_stop();
__enable_irq();
pause();
}
