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remote_bitbang: Add SWD support 44/6044/18
authorManuel Wick <manuel@matronix.de>
Sat, 30 Jan 2021 21:46:50 +0000 (22:46 +0100)
committerTomas Vanek <vanekt@fbl.cz>
Sun, 3 Dec 2023 06:22:54 +0000 (06:22 +0000)
commit0f70c6c325785517f35bbbb9316801bef7a79d8b
tree213f524638bd03f22af29106caed9b5684fbad1atree | snapshot
parent119a5338623d77bbdbc37b6ecb5e93df3368af30commit | diff
remote_bitbang: Add SWD support

This adds new command characters to make SWD work with the new split
jtag and swd operations of bitbang.

The command characters are as follows:
    O - SWDIO drive 1
    o - SWDIO drive 0
    c - SWDIO read request
    d - SWD write 0 0
    e - SWD write 0 1
    f - SWD write 1 0
    g - SWD write 1 1

Documentation has been updated accordingly. The new commands will be
used by an adapted version of the jtag-openocd applet of the "Glasgow
Debug Tool" (https://github.com/glasgowEmbedded/Glasgow). It has been
tested against an stm32f103 and an at91samd21 target.

contrib/remote/bitbang/remote_bitbang_sysfsgpio.c has also been adapted
to support SWD via the new command set. Some limited testing has been
done using a Raspberry Pi 2 with an stm32f103 and an at91samd21 target
attached.

Change-Id: I8e998a2cb36905142cb16e534483094cd99e8fa7
Signed-off-by: Manuel Wick <manuel@matronix.de>
Signed-off-by: David Ryskalczyk <david.rysk@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6044
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
configure.ac diff | blob | history
contrib/remote_bitbang/remote_bitbang_sysfsgpio.c diff | blob | history
doc/manual/jtag/drivers/remote_bitbang.txt diff | blob | history
doc/openocd.texi diff | blob | history
src/jtag/drivers/remote_bitbang.c diff | blob | history
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