TMS320F28379D: How to update firmware via SCI.

Hi,

 Yes this is achievable. please refer to https://www.ti.com/lit/an/sprabv4e/sprabv4e.pdf for more details.

You can also refer example code  under C2000Ware_x_xx_xx_xx > device_support > f2837xd > examples > dual > F2837xD_sci_flash_kernels. C2000WARE can be downloaded using https://www.ti.com/tool/C2000WARE?keyMatch=C2000%20WARE#downloads

Regards,

Rajeshwary

Thank you for the quick reply!

I have read all the documentation abd also used the SCI_flesh_kernel, but it works only when it's run on c2000's RAM regardless to the GPIO 84 and 72. 

Do I need to burn the SCI_kernel instead of the existing one? Or there is SCI bootloader built-in the c2000? And if there is built-in one how can I used it?

Thanks

HI Yuval,

Yes,  SCI ROM bootloader downloads a flash kernel to RAM and run the flash kernel in RAM to download the application to flash. I will get back to on this on Monday.

Regards,

Rajeshwary

hey Rajeshwary,

thank you very much!

waiting for your reply

thanks

Hi Yuval,

Apologies for late reply, I will get back to you soon.

Regards,

Rajeshwary

Hi Yuval,

Flash kernel example we have in C2000ware uses c1bootROM_BootROMSymbols_fpu32.lib and F021_API_F2837xD_FPU32.lib. Also Flash kernel need host programmer. I am not sure if it will directly work for your application.

However we have SCI Boot code present C:\ti\c2000\C2000Ware_4_03_00_00\libraries\boot_rom\f2837xd you can have look at it and modify as per your requirement.

Regards,

Rajeshwary

Hi Rajeshwary,

thank you for your kind reply, 

I'll be more clear, i want to update the firmware without any GUI software, only via UART communication. So if i understand it right, the common way to that is to configure the bootloader to SCI, download flash kernel into c2000's RAM via SCI bootloader, and then via SCI base, on the flash kernel, firmware update is done. can you confirm that?

1. How to download the flash kernel without CCS? If i understand right, its can be downloaded via SCI bootloader (pins 72 and 84). With the serial_flash_programmer.exe download the flash kernel and the firmware update. I have try to do that but realized that is not possible on LaunchPad XL

2. Does there is any other possible way to update the firmware via UART? (without flash kernel)

Regards,

Yuval

Hi Yuval,

I am currently OOO, will reply you by Monday.

Regards,

Rajeshwary

Hi Yuval,

Apologies for late reply. Regarding your question, I don't think it is possible to update the firmware via UART without Flash kernel. Since Flash kernel hosts Flash API which is required to program the application.

Also how will you verify if its program correctly?

Regards,

Rajeshwary

hey Rajeshwary,

Thanks for your reply.

I have bought the controlCard in order to work with GPIO 84,85 as a SCIA in SCI bootloader. 

First, Where can i find some documentations about how to communicate with SCI bootloader?
currently i reverse engineering the source code F2837xD_sci_flash_kernels_CPU01.c to learn how to do it.

what am i trying to do is follow:

1. Connecting PC RS232 (through converter to UART) to pins 84, 85 (RX, TX)

2. Switch pins 72, 84 to initialize c2000 into SCI bootloader mode

3. Download flash-kernel to c2000's RAM

4. Download the new firmware

I'm able to communicate with the board via the SCI bootloader (sending the character 'A' and get back 'A') but when i try to send the the flash-kernel it sends only few bytes and then stop. When its stop it start to run the current program that has downloaded to the flash memory, which is led blinking TI example. 

Best regards,

Yuval

Hi Yuval,

You can refer below documentation 

https://www.ti.com/lit/an/sprabv4e/sprabv4e.pdf?ts=1679416851397&ref_url=https%253A%252F%252Fwww.google.com%252F

Regards,

Rajeshwary