TMS570LS3137: Issue with SpiEnableCs generation

Hi Prathibha,

Are you talking about "SpiEnableCs " configuration? This parameter is always enabled by default. Configuration to disable this parameter is not provided. How did you disable this parameter?

Hi Vishwanath,

I will answer on behalf of Prathibha.

Yes, we are referring to configuration parameter "SpiEnableCs". We disabled the checkbox in the configuration tool (see picture below), but to no avail.

The generated Spi_PBcfg.c still contains the value of the SpiCsIdentifier:

I can see from your Spi_Dlc.c that your SPI Driver does support disabling of the Chip Select Handling (otherwise, it would violate some AUTOSAR requirements).

So, if I manually paste "SPI_NO_CHIP_SELECT" into the Spi_PBcfg.c, then the driver will not handle the Chip Select - just as expected.

The question is: Why won't the generator place the value "SPI_NO_CHIP_SELECT", when SpiEnableCs is configured to FALSE?

Hi Reinhard,

Modifying SpiCsSelection and SpiEnableCs  is not supported by MCAL SPI driver. See below image from EB Tresos. 

Hi Vishwanath,

configuration parameter SpiEnableCs is specified by AUTOSAR (see SWS Item SPI212_Conf in Specification of SPI Handler/Driver, AUTOSAR Release 4.0). According to your statement, configuration of this parameter is not supported in Texas Instruments AUTOSAR MCAL 05.30.00.

1. Why isn't this deviation mentioned in the AUTOSAR MCAL 05.30.00 Release Notes?
2. Why does the configuration not allow to deactivate the Chip Select Handling, even though the implementation clearly does support this feature?

Best Regards,

Reinhard Saller