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Diffstat (limited to 'keyboards/jj4x4/tools/README.md')
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diff --git a/keyboards/jj4x4/tools/README.md b/keyboards/jj4x4/tools/README.md new file mode 100644 index 000000000..081984ed4 --- /dev/null +++ b/keyboards/jj4x4/tools/README.md @@ -0,0 +1,16 @@ +# JJ40 Tools + +## usb_detach.c + +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. +This program can force Linux to give up a device, so that the programming script can reset it. + +### To compile: +``` +gcc usb_detach.c -o usb_detach +``` + +### To run: +1. Use `lsusb` to discover the Bus and Device numbers for your keyboard. +2. Run the program: `sudo ./usb_detach /dev/bus/usb/<BUS>/<DEVICE>`. +3. Build and program the firmware as normal. |