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adafruit / Adafruit_DAP

port of free-DAP to standalone arduino
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stm32F103VET6 flash failed #13

Closed zhizhuowu closed 4 years ago

zhizhuowu commented 4 years ago

hi, the example for stm32 flash from SD is not working on feather M0 adalogger with the following error message on serial printf:

Card initialized Connecting...Adafruit Generic CMSIS-DAP Adapter 123456 v0.1 (S) invalid response reading reg D (count = 1, value = 4)

that means the dap.dap_disconnect() go through, but dap.dap_connect() can't go through.

May I know whether there is a solution for that? i am using Arduino 1.8.3. does it have anything to do with the version? Thank you!

ladyada commented 4 years ago

it could be a wiring issue, could be speed, we have used it on teensy with success! its hard to debug, please use logic analyzer

zhizhuowu commented 4 years ago

hi, Thank you! May I know the setup you used to test it? I think it can be the speed. Thank you for your help.