/*
* I2C interface initialize.
*/
void suli_i2c_init(void * i2c_device)
{
vAHI_SiMasterConfigure(
TRUE, //bPulseSuppressionEnable,
FALSE, //bInterruptEnable,
31); //uint8 u8PreScaler); //16M/((scale+1)*5) = 100k
vAHI_SiSetLocation(TRUE); //D16,D17 as i2c
}
void TwoWire::begin(void) {
if (onBeginCallback)
onBeginCallback();
vAHI_SiSetLocation(false);
vAHI_SiMasterConfigure(true, false, SI_CLOCK2PRESCALER(twiClock) ); // set to 100KHz
status = MASTER_IDLE;
}
PUBLIC void vSMBusInit(void)
{
/* run bus at 100KHz */
vAHI_SiMasterConfigure(TRUE, FALSE, 7);
// 16/[(PreScaler + 1) x 5]MHz
// --> 31:100KHz, 7:400KHz
}
/** Start I2C
*/
void StartI2C() {
if (I2Cdev_enabled)
return;
#ifdef I2CDEV_SERIAL_DEBUG
i2cdev_debug_depth++; int z; for(z=0;z<i2cdev_debug_depth;z++) DBG_vPrintf(TRACE_APP, "\t"); DBG_vPrintf(TRACE_APP, "StartI2C\r\n");
#endif
// Pullups if needed
// vAHI_DioSetPullup(0, (1 << 14));
// vAHI_DioSetDirection((1 << 14), 0);
// vAHI_DioSetPullup(0, (1 << 15));
// vAHI_DioSetDirection((1 << 15), 0);
vAHI_SiMasterConfigure(FALSE, FALSE, 7); //activate I2C with 7 = 400Khz, 31 = 100kHz clock,
IdleI2C();
I2Cdev_enabled = TRUE;
#ifdef I2CDEV_SERIAL_DEBUG
i2cdev_debug_depth--;
#endif
}
