STM32L-Discovery No connection

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Jasper van den Akker

• April 17, 2013 06:34

Probably a bad program in my STM32L-Discovery board cause the problem that i'm not able to connect my board anymore.

Also in ST LINKv2 i can not connect. How can i reset my device?

The message in CrossWorks: 'st-link log' That's all....

How can i hard reset my board?

Please help me.

 

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  Richard Webb

  • April 17, 2013 16:22

  Try using ST's serial bootloader at

  <http://www.st.com/web/catalog/tools/FM147/CL1794/SC961/SS1743/PF257525?s_searchtype=partnumber>

  You'll need to set BOOT0 and BOOT1 appropriately and then to access the UART pins. I confess that I have not dug deeply enough into that board's schematic to determine how easy it will be to get to the UART pins at logic level. However, using the bootloader will allow you to access the device prior to your application code running and to erase/reprogram it with known good code.

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