CC1352R: Bootloader error with uniflash

Marc Martin

Part Number: CC1352R
Other Parts Discussed in Thread: UNIFLASH

Hi TI team,

I am trying to program a CC1352R1F3 using the ROM Serial Bootloader through UniFlash.

Programming the same firmware through JTAG using the .out file works correctly and the application starts as expected. However, when programming through the ROM bootloader using the generated .hex file, I see different behavior.

If the application image includes CCFG, UniFlash enters the bootloader, performs autobaud, erases/programs/verifies the application, but fails when programming CCFG:

Program CCFG to address: 0x57FD8 with programming size: 0x28 failed

If I exclude CCFG from the build and use Manual CCFG Settings in UniFlash, the programming completes successfully, but the application does not start after reset. The bootloader backdoor itself works correctly: the device only enters bootloader when DIO22 is forced high during reset.

The firmware starts correctly when programmed via JTAG, so I suspect either the .hex generation, UniFlash bootloader CCFG handling, or a mismatch between the SysConfig-generated CCFG and the manual CCFG programmed by UniFlash.

Could you confirm the recommended flow for programming CC1352R1F3 via ROM Serial Bootloader?

2 months ago

+1 Arthur R☑️ 2 months ago

TI__Mastermind 27897 points

Hi Marc,

At the moment, flashing the ROM bootloader through UNIFLASH does not work. This is a known issue.

It does not prevent you to use the serial bootloader howver, so I recommend you to follow our applicaiton note, which comes with the software to flash the device: https://www.ti.com/lit/an/swra466e/swra466e.pdf

Regards,

Arthur

0 Marc Martin 2 months ago in reply to Arthur R☑️

Prodigy 30 points

I checked the HEX generation command. CCS is running:

tiarmhex --romwidth=32 --intel -o onehop.hex onehop.out

However, the alternative bootloader tool still reports:
"WARNING! Bootloader is disabled in the new CCFG"

If I continue, erase fails at 88% with:
"Status 0x43 = INVALID_ADR"

Could you confirm whether this tool fully supports Intel HEX images with CCFG for CC1352R1F3, or whether the image must exclude the .ccfg section and keep the existing CCFG on the target?

0 Arthur R☑️ 2 months ago in reply to Marc Martin

TI__Mastermind 27897 points

Hi Marc,

This tool does not support intelhex.You have to generate a binary file, in the same format has the last comment on this post: [FAQ] CC1352P7: Is ti-wisunfantund working with the newly released BeaglePlay? (yes) - Sub-1 GHz forum - Sub-1 GHz - TI E2E support forums.

CCFG must be excluded only if you are using the CC1354.

Regards,

Arthur