TMS570LS1115: HalCoGEn MIBSPI1 transfer group

Hello Bob，

Are all the group used for the same chip select? or they are assigned to different chip select? In default, the HALCoGen assigns group 0 to CS0, group 1 to CS1, ... group 7 to CS7. The MibSPI1 and MibSPI3 don't have CS6 and CS7.

Regards,
QJ

Hi QJ,

I am not using the CS option.  Have selected NONE in HalCoGen.  I use a GPIO line for CS which i control manually.  

All the groups are connected to the same CS.

Interesting that the two groups i am having issues with are different to the groups that are working...

Any other suggestions ?

Rob

Hi QJ,

i have done some more testing on this issue and still cannot resolve. Seems there is a bug in the HALCoGen mibspi.c file generated although i have had a quick review of mibspi.c and it seems ok.

My test function is as follows,

/*--------------------------------------------------------*/
void Debug_Test_SPI_Groups(void)
{
uint16_t Buffer[64];

Set_Output_SPI1_CS();
mibspiInit();

/*
* HALCoGen Configuration
*
* MIBSPI1 DATA FORMATS
*
* Data Format 0
*
* Baudrate (Khz): 4000
* Wdelay: 0
* CharLen: 8
* Clock Phase: Enabled
*
* MIPSPI1 Delays
*
* Chip Select to Active Start 33.33 nS
* Transit End to Chip Select Inactive 22.22 nS
* Chip Select to ENA Timeout 0.00 nS
* Transmit Finish to ENA Inactive Timeout 0.00 nS
*
* MIBSPI1 Transfer Groups
*
* Transfer Group Common
*
* Chip Select: CS_NONE
* Data Format: 0
* Lock Transmission: Not Selected
* Buffer Mode: 4
* Enable WDELAY: Not Selected
* Chip Select Hold: Not Selected
*
* One Shot Transfer: Selected
* Use Encode Chip Select: Not Selected
* Chip Select Hold: Not Selected
* Trigger Events: TRG_ALWAYS
* Trigger Source: TRG_DISABLED
* Transfer Group Pointer Reset: Not Selected
*
* Transfer Group 0 - Length 1
* Transfer Group 1 - Length 2
* Transfer Group 2 - Length 9
* Transfer Group 3 - Length 65
* Transfer Group 4 - Length 3
* Transfer Group 5 - Length 18
* Transfer Group 6 - Length 6 ** not working
* Transfer Group 7 - Length 10 ** not working
*
*/

/*
* doesn't matter which order below code is executed, always fails on groups 6 & 7
*/

/*
* Test Group 5 Transfer, this works OK, scope triggered on falling edge of CS
*/
Clear_Output_SPI1_CS(); /* Chip Select Low */
mibspiSetData(mibspiREG1, 5U, Buffer);
mibspiTransfer(mibspiREG1, 5U);

while (!( mibspiIsTransferComplete(mibspiREG1, 5U) ))
{
}
Set_Output_SPI1_CS(); /* Chip Select High End of Transfer */

/*
* Test Group 6 Transfer, FAILS
*/
Clear_Output_SPI1_CS(); /* Chip Select Low */
mibspiSetData(mibspiREG1, 6U, Buffer);
mibspiTransfer(mibspiREG1, 6U);

while (!( mibspiIsTransferComplete(mibspiREG1, 6U) ))
{
}
Set_Output_SPI1_CS(); /* Chip Select High End of Transfer */

/*
* Test Group 7 Transfer, FAILS
*/
Clear_Output_SPI1_CS(); /* Chip Select Low */
mibspiSetData(mibspiREG1, 7U, SPI_1_TX_Big_Buffer);
mibspiTransfer(mibspiREG1, 7U);

while (!( mibspiIsTransferComplete(mibspiREG1, 7U) ))
{
}
Set_Output_SPI1_CS();/* Chip Select High End of Transfer */

while(1); /* never gets here as hangs at Group6 Transfer */
}

/*--------------------------------------------------------*/

I observe correct operation of SPI for Group5, but when i run the test code for Group6 & 7 i see no SPI activity.

Any suggestions ?

I would like to attach HalCoGen files but i cant see how to attach files here...

Regards
Rob