TMS320F28388D: HLC Run or CLB Data Push to SPI RX Fifo Occurs First When They Use the Same Event to Trigger?

Hi Erhan,

It sounds like you will want to configure one of the HLC events to be triggered by COUNTER_0.count_match1 and then use this event to prepare the data and push it to the HLC FIFO. Afterwards, you can signal an interrupt to the CPU. Within the event handler for this interrupt, you can then push the data to the RX FIFO. The HLC should perform these instructions sequentially in priority order. Am I understanding your question correctly? Let me know if you need any more info

Regards,

Peter

Hi Peter!

You got it true I think so.Thank you so much. To prepare mean actually to copy data from Counters to R0 to export them. Example HLC code for that is below.

MOV C0, R0  # Copy data to R0
MOV R2, C2  # Trigger data export
MOV C1, R0  # Copy data to R0
MOV R2, C2  # Trigger data export

Data export event will be Counter 1 count match 1 and I want to export C0 and C1. Here my question is if my logic works? Or do I need to put some delay after HLC event like some dummy command (eg MOV R0,R0) to assure to export right data? Like below

MOV C0, R0  # Copy data to R0
MOV R2, C2  # Trigger data export
MOV R0, R0  # dummy instruction 
MOV C1, R0  # Copy data to R0
MOV R2, C2  # Trigger data export
MOV R0, R0  # dummy instruction 

Also another question is if data export and hlc use same event to be triggered. Then what happened if they trigger at same time?

thanks in advance. 

Also, in the CLB example 28,HLC and data export use same event. But  there is no info about it. And it is wrirtten that example details in the CLB Tool Users Guide.pdf but I couldn't find any info. Can we please provide more info about CLB examples?

Many thanks in advance.

//#############################################################################
//
// FILE:   clb_ex28_spi_data_export_dma.c
//
// TITLE:  CLB SPI Data Export DMA
//
//! \addtogroup driver_example_list
//! <h1>CLB SPI Data Export DMA</h1>
//!
//! For the detailed description of this example, please refer to:
//!  C2000Ware_PATH\utilities\clb_tool\clb_syscfg\doc\CLB Tool Users Guide.pdf
//!
//
//#############################################################################

Hi Peter!

Thanks for your help. I made it work finally. I had to add 3mov in the HLC code to export data 2 times in one HLC event. HLC code is below.

I used counter 2 match event to export data.

Can you maybe confirm that my way is ok? Thanks in advance.

cheers,

ADD R1, R0	# Inc R0
MOV R3, C2  # C2 Count Match(Fifo Export Event)
MOV R2, R2	# Dummy command
MOV R2, R2	# Dummy command
MOV R2, R2	# Dummy command
ADD R1, R0	# Inc R0
MOV R3, C2  # C2 Count Match(Fifo Export Event)

Hi Erhan,

Glad to hear that you were able to resolve your issue. Yes, given your use case, this implementation should be ok. Please reach out if you have any other questions.

Regards,

Peter

Hi Peter!

Yes, it costed me a day but i did it. :) Thanks a lot for your help and interest. Sure, I will.

cheers,