bool DRV_I2C0_MasterRestart(void)
{
/* Check for receive overflow */
if ( PLIB_I2C_ReceiverOverflowHasOccurred(I2C_ID_4))
{
PLIB_I2C_ReceiverOverflowClear(I2C_ID_4);
return false;
}
/* Check for transmit overflow */
if (PLIB_I2C_TransmitterOverflowHasOccurred(I2C_ID_4))
{
PLIB_I2C_TransmitterOverflowClear(I2C_ID_4);
return false;
}
/* Issue restart */
PLIB_I2C_MasterStartRepeat(I2C_ID_4);
return true;
}
void __attribute__((interrupt, no_auto_psv)) _MI2C2Interrupt(void)
#endif
#endif
{
ACCEL_BOOL polling;
ACCEL_CMD_DATA *pCmdData;
uint32_t *pIndex;
// uint8_t **pRxBuffer;
uint8_t *pRxBuffer;
// if(I2CPriority == ACCEL_PRIORIY)
// {
// pCmdData = accelData;
// pIndex = &accelIdx;
//// pRxBuffer = &AccelRxBuffer;
// pRxBuffer = AccelRxBuffer;
// }
// else
// {
//// pCmdData = (ACCEL_CMD_DATA *)EepromI2CData;
//// pIndex = &EepromI2CIdx;
//// pRxBuffer = &EepromRxBuffer;
// }
pCmdData = accelData;
pIndex = &accelIdx;
pRxBuffer = AccelRxBuffer;
// AccelRxBuffer += 4;
if(SYS_INT_SourceStatusGet(ACCEL_BMA250_I2C_SOURCE))
{
polling = ACCEL_FALSE;
switch(pCmdData[*pIndex].cmd)
{
case ACCEL_CMD_START:
PLIB_I2C_MasterStart(ACCEL_BMA250_I2C_MODULE);
break;
case ACCEL_CMD_RESTART:
PLIB_I2C_MasterStartRepeat(ACCEL_BMA250_I2C_MODULE);
break;
case ACCEL_CMD_STOP:
PLIB_I2C_MasterStop(ACCEL_BMA250_I2C_MODULE);
break;
case ACCEL_CMD_TX_BYTE:
PLIB_I2C_TransmitterByteSend(ACCEL_BMA250_I2C_MODULE, pCmdData[*pIndex].data);
break;
case ACCEL_CMD_EN_RX:
PLIB_I2C_MasterReceiverClock1Byte(ACCEL_BMA250_I2C_MODULE);
break;
case ACCEL_CMD_RX_BYTE:
// **pRxBuffer = PLIB_I2C_ReceivedByteGet(ACCEL_BMA250_I2C_MODULE);
// (*pRxBuffer)++;
*pRxBuffer = PLIB_I2C_ReceivedByteGet(ACCEL_BMA250_I2C_MODULE);
pRxBuffer++;
break;
case ACCEL_CMD_ACK:
PLIB_I2C_ReceivedByteAcknowledge(ACCEL_BMA250_I2C_MODULE, pCmdData[*pIndex].data);
break;
case ACCEL_CMD_ACK_POLL:
polling = ACCEL_TRUE;
if(!PLIB_I2C_TransmitterByteWasAcknowledged(ACCEL_BMA250_I2C_MODULE))
{
(*pIndex) -= 4;
}
break;
default:
accelData[*pIndex].cmd = ACCEL_DONE;
case ACCEL_DONE:
#ifndef ACCEL_USE_EXTERNAL_INTERUPT_HANDLER
SYS_INT_SourceDisable(ACCEL_BMA250_I2C_SOURCE);
accelData[0].cmd = ACCEL_DONE;
break;
#else
*pIndex = ACCEL_INVALID_IDX;
return;
#endif
}
SYS_INT_SourceStatusClear(ACCEL_BMA250_I2C_SOURCE);
if(pCmdData[*pIndex].cmd != ACCEL_DONE)
{
if((pCmdData[*pIndex].cmd == ACCEL_CMD_RX_BYTE) || (polling))
{
SYS_INT_SourceStatusSet(ACCEL_BMA250_I2C_SOURCE);
}
(*pIndex)++;
}else
{
*pIndex = ACCEL_INVALID_IDX;
I2CPriority = FREE_PRIORITY;
}
}
}
