Low-level cc1111 interface diagnostic tool
ao-bitbang connects through a CP2103 usb-to-serial converter and uses the GPIO pins to communicate with the debug port on a cc1111 device. It provides raw access to the debug pins to help debug the lowest level communication path.
ao-bitbang reads a sequence of bit manipulations from stdin, sends them to the device and reports status on stdout.
Each line on stdin should contain a single letter command for each of the three debug lines on the cc1111 -- clock, data and reset. Each bit can be in one of three states -- on (C, D or R), off (.) or tri-state (-) for input. Empty lines, or lines starting with '#' are ignored. Anything beyond the last bit in a line is also ignored. The bits must be listed in the correct order, and the 'on' values must match the desired bit.
# reset C D R C D R C D R C D R
# # Debug mode - drive RESET_N low for two clock cycles # C D R . D . C D . . D . C D . . D R # # GET_CHIP_ID C . R 0 . . R C D R 1 . D R C D R 1 . D R C . R 0 . . R C D R 1 . D R C . R 0 . . R C . R 0 . . R C . R 0 . . R # # start reading again # C D R . - R C - R . - R C - R . - R C - R . - R C - R . - R C - R . - R C - R . - R C - R . - R C - R . - R C - R . - R C - R . - R C - R . - R C - R . - R C - R . - R C - R . - R C - R . - R C D R