uint8_t Init_Twi(int index)
{
if(index > (sizeof(twi_instances)/sizeof(twi_instances[0])))
{
return 0;
}
if(twi_Init[index] == 1)
{
return 1; // allready initialized.
}
freertos_peripheral_options_t async_driver_options = {
NULL,
0,
(configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY + 1),
TWI_I2C_MASTER,
(USE_TX_ACCESS_MUTEX | USE_RX_ACCESS_MUTEX | WAIT_TX_COMPLETE | WAIT_RX_COMPLETE),
};
/*Initialize twi bus.*/
freertos_twi_if twi = freertos_twi_master_init( twi_instances[index],
&async_driver_options );
if ( twi == NULL )
{
return 0;
}
freeRTOS_twi[index] = twi;
twi_set_speed( twi_instances[index], 400000, sysclk_get_cpu_hz() ); /*High speed TWI setting*/
twi_Init[index] = 1;
return 1;
}
static uint8_t twi_init(void){
freertos_peripheral_options_t driver_options = {
//Receiver Buffer
NULL,
//Size Receiver Buffer
0,
//Priority Interrupt
(configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY),
TWI_I2C_MASTER,
( USE_TX_ACCESS_MUTEX | USE_RX_ACCESS_MUTEX | WAIT_TX_COMPLETE | WAIT_RX_COMPLETE)
};
freertos_twi = freertos_twi_master_init(TWI0, &driver_options);
configASSERT(freertos_twi);
uint8_t twi_flag = twi_set_speed(TWI0, TWI_SPEED, sysclk_get_cpu_hz());
return twi_flag;
}
