ao-bitbang - Low-level cc1111 interface diagnostic tool
ao-bitbang
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 the target device
-
# reset
C D R
C D R
C D R
C D R
- Get Chip ID
-
#
# 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
Keith Packard