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joric / nrfmicro

A Pro Micro alternative for wireless keyboards
https://github.com/joric/nrfmicro/wiki
The Unlicense
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Need help!: problem flashing the bootloader #60

Closed lebatbao closed 2 years ago

lebatbao commented 2 years ago

Hi, first of all thanks for the work you put in. But i have met a problem that i can't seem to solve:

board nrfMicro 1.4 When i tried flashing the chip with a bluepill flashed with bmp they output this error:

Target voltage: ABSENT! Exception: SWDP invalid ACK SW-DP scan failed! Attaching to Remote target failed Target does not support this command.

i thought that i solder something wrong, after a few weeks of frustrations and google searching, even hooking up a pull up resistor doesn't seems to fix the problem, even ordering another bluepill to test output the same error, and when i tried an st-link flash with cmis-dap patch they output this:

Open On-Chip Debugger 0.11.0 Licensed under GNU GPL v2 For bug reports, read http://openocd.org/doc/doxygen/bugs.html debug_level: 2

swd Warn : Using CMSIS-DAPv2 interface 1 with wrong class 10 subclass 0 or protocol 0 Info : Using CMSIS-DAPv2 interface with VID:PID=0xc251:0xf001, serial=0001A0000000 Warn : could not claim interface: Resource busy Error: error writing data: Input/Output Error Error: CMSIS-DAP command CMD_INFO failed.

the kernel log: [ 5017.882236] usb 1-7.4: Product: CMSIS-DAP [ 5017.882237] usb 1-7.4: Manufacturer: X893 ARM [ 5017.882239] usb 1-7.4: SerialNumber: 0001A0000000 [ 5017.907217] cdc_acm 1-7.4:1.0: ttyACM0: USB ACM device [ 5017.907894] hid-generic 0003:C251:F001.0013: hiddev3,hidraw7: USB HID v1.00 Device [X893 ARM CMSIS-DAP] on usb-0000:02:00.0-7.4/input2 [ 5254.884960] usb 1-7.4: usbfs: process 13627 (openocd) did not claim interface 1 before use [ 5307.286692] usb 1-7.4: usbfs: process 13957 (openocd) did not claim interface 1 before use

this seems like openocd cant claims the interfaces for cmisdap,is theres anyway else to flashing the nrfMicro? i might even try the j-link but i dont think it will be better

joric commented 2 years ago

I don't know really =( try flashing a standalone module maybe it's soldering. Top row of resistors is usually problematic. If you have a spare module you can just solder to GND/VCC/SWD/SWO (bluepill has a 3.3V output).