Troubleshoting

This page contains a collection of often encountered issues and solutions.

Errors with STM32L072 MCU using OpenOCD

The standard OpenOCD settings sometimes fail to flash firmware to this MCU, which is used in the MPPT 1210 HUS and the PWM charge controller.

Try one of these workarounds:

1. Change OpenOCD settings to adapter_khz 500 in openocd-path/scripts/target/stm32l0.cfg.

2. Use other tools or debug probes such as STM32CubeProgrammer or Segger J-Link.

3. Change OpenOCD setting from reset_config srst_only to reset_config srst_open_drain or reset_config none in boards/arm/<yourboard>/support/openocd.cfg.