S6E1C3 SWD/JTAG Communication Failure

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Anonymous
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My FM0-64L-S6E1C3 board is not able to be controlled by Keil uVision 5.17. Keil shows "SWD/JTAG Communication Failure" in the Debug/Setting/SW Device window. What should I do to solve the problem?

   

What is strange is that once I could connect and debug the board under the same configuration of Keil. When it was connected successfully, Keil showed "0x0BC11477 ARM CoreSight SW-DP", as shown in the attached image.

   

Moreover, under the same configuration one board could be connected while another couldn't. Maybe it means something is changed in the board, but what I did is just programming my code into it...

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Anonymous
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Is it working when you change SW to JTAG? Also, have you added the device in Flash Programming Algorithm? (Flash Download)?

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Anonymous
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Here is another situation I'm seeing now.  Keil seems recognize the device and communicate it, as shown in the attached image, but fails to programming or debugging it showing "RDDI-DAP Errro" and "Error: Flash Download failed - Target DLL has been cancelled".

   

I'm using "S6E1A2C0A" as the device and in Setting non-SWJ, Connect:with Pre-reset, and Reset:Autodetected...

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Anonymous
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Is it working when you change SW to JTAG? Also, have you added the device in Flash Programming Algorithm? (Flash Download)?

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bharadhwajas_91
Employee
Employee
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Have you ensured your Jumper settings are right ?Can you try closing the Keil Uvision and re-opening again and try ?

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