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| author | Tomas Vanek <vanekt@fbl.cz> | 2021-11-12 09:49:01 +0100 |
|---|---|---|
| committer | Antonio Borneo <borneo.antonio@gmail.com> | 2021-11-20 14:44:54 +0000 |
| commit | 872682345af6e26af145c76d5a4373b16d815b7e (patch) | |
| tree | 2e260d09820182c35bf8eefb328257e2352da079 /HACKING | |
| parent | 3eef83e4bd2b112b98d73f8b0947af93c193e0ef (diff) | |
| download | riscv-openocd-872682345af6e26af145c76d5a4373b16d815b7e.zip riscv-openocd-872682345af6e26af145c76d5a4373b16d815b7e.tar.gz riscv-openocd-872682345af6e26af145c76d5a4373b16d815b7e.tar.bz2 | |
drivers/swd: add support for SWD multidrop
According to ARM IHI0031C+ chapter 2.3.11 "TARGETSEL, Target Selection register"
multidrop capable DPv2 must not drive SWDIO line during the response phase
of a write to TARGETSEL register.
Introduce helper functions swd_cmd_returns_ack() and swd_ack_to_error_code()
to centralize these tests from all drivers to one place.
Introduce distinct error codes for SWD protocol.
Partly inspired by Graham Sanderson's http://review.openocd.org/4935
Change-Id: Ie5f9edb22e066a933a534bf2b29e7e1d3087dad1
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6699
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Tested-by: jenkins
Diffstat (limited to 'HACKING')
0 files changed, 0 insertions, 0 deletions