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=== WCH-link === | |||
Debug header | |||
# BO | |||
# 3V3 | |||
* no 3.3V on PCB. I guess connect to WCH-Link 3V3? | |||
# SWDCLK | |||
# SWDIO | |||
# ground | |||
# BOOT | |||
* BOOT1? | |||
Package pin assignment | |||
* PA13/SWDIO | |||
* PA14/SWCLK | |||
boot to high pin => seems to enable USB even with SWD plugged in | |||
=== Unbrick === | === Unbrick === | ||
In theory we have all firmware (system ROM, bootloader, main firmware) and should be able to unbrick devices. However, I was unable to restore my devices | |||
Theory: unrick issue is firmware is not at correct .hex location. Things that didn't seem to work to get firmware .hex file: | |||
objcopy --input-target=binary --output-target=ihex --set-start 0x08000000 t48_bootrom_2022-06-30.bin t48_bootrom_2022-06-30.hex | |||
objcopy --input-target=binary --output-target=ihex --change-addresses 0x08000000 t48_bootrom_2022-06-30.bin t48_bootrom_2022-06-30.hex | |||
objcopy --input-target=binary --output-target=ihex t48_bootrom_2022-06-30.bin temp.hex | |||
objcopy --change-addresses 0x08000000 temp.hex t48_bootrom_2022-06-30.hex | |||
Revision as of 06:01, 21 December 2022
WCH-link
Debug header
- BO
- 3V3
* no 3.3V on PCB. I guess connect to WCH-Link 3V3?
- SWDCLK
- SWDIO
- ground
- BOOT
* BOOT1?
Package pin assignment
- PA13/SWDIO
- PA14/SWCLK
boot to high pin => seems to enable USB even with SWD plugged in
Unbrick
In theory we have all firmware (system ROM, bootloader, main firmware) and should be able to unbrick devices. However, I was unable to restore my devices
Theory: unrick issue is firmware is not at correct .hex location. Things that didn't seem to work to get firmware .hex file:
objcopy --input-target=binary --output-target=ihex --set-start 0x08000000 t48_bootrom_2022-06-30.bin t48_bootrom_2022-06-30.hex
objcopy --input-target=binary --output-target=ihex --change-addresses 0x08000000 t48_bootrom_2022-06-30.bin t48_bootrom_2022-06-30.hex
objcopy --input-target=binary --output-target=ihex t48_bootrom_2022-06-30.bin temp.hex objcopy --change-addresses 0x08000000 temp.hex t48_bootrom_2022-06-30.hex