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CC2652R: How to force CC2652R into ROM bootloader

Emmanuel Sanchez
Prodigy 155 points
Part Number: CC2652R


Hi, 

I am using the ROM bootloader on the CC2652R to download firmware. It works fine, but I have a concern.

If a user downloads a firmware that disables the bootloader through the CCFG (e.g. setting SET_CCFG_BL_CONFIG_BOOTLOADER_ENABLE = 0x00, or accidentally changing the bootloader backdoor pin to an incorrect value), is there a way to erase/invalidate the firmware on the CC2652R through hardware (e.g. jumping a pin) so that the chip will be forced to enter the bootloader?

Or is the only option to use a JTAG probe to reconfigure the CCFG and re-enable the bootloader?

Thank you,

Emmanuel

  • 0
    Guru 735695 points

    Using Jtag is an options in such case to reconfigure the CCFG and re-enable the bootloader. A possible alternative is using OAD with CCFG modified firmware to unlcok this but I never test to verify if it works.