TMS320F28386S: Uart Error

Hi Asaf,

Error can be due to multiple reasons, usually in our sample code that we provide with C2000Ware, we halt the code there with an ESTOP and direct users to check for the specific error that is there in the system. Based on the error, you can analyze the code / hardware and debug accordingly.

        rxStatus = SCI_getRxStatus(SCIA_BASE);
        if((rxStatus & SCI_RXSTATUS_ERROR) != 0)
        {
            //
            //If Execution stops here there is some error
            //Analyze SCI_getRxStatus() API return value
            //
            ESTOP0;
        }

Thanks,

Aditya

The error flags can be cleared using the API - "SCI_performSoftwareReset"

//*****************************************************************************
//
//! Performs a software reset of the SCI and Clears all reported receiver
//! status flags.
//!
//! \param base is the base address of the SCI port.
//!
//! This function performs a software reset of the SCI port.  It affects the
//! operating flags of the SCI, but it neither affects the configuration bits
//! nor restores the reset values.
//!
//! \return None.
//
//*****************************************************************************
static inline void
SCI_performSoftwareReset(uint32_t base)
{
    //
    // Check the arguments.
    //
    ASSERT(SCI_isBaseValid(base));

    //
    // To clear all errors a sw reset of the module is required
    //
    HWREGH(base + SCI_O_CTL1) &= ~SCI_CTL1_SWRESET;
    HWREGH(base + SCI_O_CTL1) |= SCI_CTL1_SWRESET;
}

For specific details about the error flags of the SCI Rx registers, you can take a look at the SCIRXST register from the technical reference manual of the device.

Thanks,
Aditya

Asaf,

The software reset only clears the SCI flags. It won't affect the configuration registers and the Tx operation.