7df9e584fa
* added keyboard jj4x4, a shorter version of the jj40 * removed useless file * edited jj4x4 readme.md * optimized array size in jj4x4 config.h, removed reference to jj40 layouts from rules.mk * removed custom matrix for this ps2avrgb board, refactored column and row pins
16 lines
582 B
Markdown
16 lines
582 B
Markdown
# JJ40 Tools
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## usb_detach.c
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When trying to flash on Linux, you may encounter a "Resource Unavailable" error. This means that Linux's HID driver has taken exclusive control of the keyboard, and the program script can't flash it.
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This program can force Linux to give up a device, so that the programming script can reset it.
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### To compile:
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```
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gcc usb_detach.c -o usb_detach
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```
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### To run:
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1. Use `lsusb` to discover the Bus and Device numbers for your keyboard.
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2. Run the program: `sudo ./usb_detach /dev/bus/usb/<BUS>/<DEVICE>`.
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3. Build and program the firmware as normal.
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