TMS320F280039C: DCAN Flash programming using can flash kernal and the blinky application

Ashan Sandanayake

Part Number: TMS320F280039C
Other Parts Discussed in Thread: C2000WARE

I am trying to do the CAN Flash Programming of C2000 TMS320F280039C Microcontrollers using the Launch Pad dev board. instead of using the PCAN device, I am trying to do the programming using the ESP32S3. I used the flash_kernel_ex5_dcan_flash_kernel.txt file as the kernel and the blinky.txt file as the application and inserted both into the program in esp-idf as unsigned char arrays. as it was mentioned in the sprad51 doc I sent the kernal file through CAN in 2 bytes per frame at 100kbps and then waited for 5000ms and sent the application file (blinky.txt) in 8 bytes per stack at 1Mbps. before sending the whole thing i set the boot pins of the c2000 launch pad as 32 low and 24 high (CAN boot configuration) and then after that set back both boot pins high (flash boot mode) and restarted the launch pad. but the blinky application didn't work.

I included the kernal and the application files as above in the espidf program.

May I know the reason and how to solve it?

Best Reguards,
Ashan

over 2 years ago

0 Sinchita Maity over 2 years ago

TI__Prodigy 680 points

Hi,

The expert is on leave. Please expect a reply by 18th March.

Thanks & Regards,

Sinchita

0 Ashan Sandanayake over 2 years ago in reply to Sinchita Maity

Prodigy 80 points

sure,

Thankyou verymuch

0 Rajeshwary Nitin Bongirwar over 2 years ago

TI__Expert 6000 points

Hi Ashan,

I am not sure about how ESP32S3 works, but when you transfer the CAN frame do you see any CAN bus errors.

Please elaborate steps you are performing to get more clarity also share screenshot if any.

If no errors then could you check the RAM memory and confirm that flash kernel is getting loaded into RAM of the device?

Thanks & Regards,

Rajeshwary

0 Ashan Sandanayake over 2 years ago in reply to Rajeshwary Nitin Bongirwar

Prodigy 80 points

Hi Rajeshwarya,
I checked the CAN Transmitting data bytes using a CAN analyser and it didnt appeared any errors. I only followed the steps given in the sprad51 document for "CAN Flash Programming of C2000 Microcontrollers". Can you explain me how to check the RAM while uploading this program through CAN, since this application doesnt use JTAG to debugg using Code Compressor studio
Thanks,
Best Regards,
Ashan

0 Ashan Sandanayake over 2 years ago in reply to Rajeshwary Nitin Bongirwar

Prodigy 80 points

Also I would like to Know if theres any effect by the unknown start bit and end bit symbols of the hex text file of the kernal and the blink application

0 Rajeshwary Nitin Bongirwar over 2 years ago in reply to Ashan Sandanayake

TI__Expert 6000 points

Hi Ashan,

Start bit should not have any effect as it should be eliminated.

1. When you initiates CAN transfer are you able to see the frames being transmitted and received on CAN analyzer as you are not seeing any errors while transmitting?

2. Can you please share what steps you are doing and also share the screenshot of command prompt when you start transmitting?

You can refer to source code of the dcan_flash_programmer in C2000Ware (C2000Ware_Location/utilities/flash_programmers/dcan_flash_programmer/dcan_flash_programmer) and also debug it step by step and see where it is getting stuck(Refer section 6.2.2 of sprad51 for more details).

Regards,

Rajeshwary

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F280039C: DCAN Flash programming using can flash kernal and the blinky application