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| author | Tomas Vanek <vanekt@fbl.cz> | 2017-01-09 15:30:21 +0100 |
|---|---|---|
| committer | Freddie Chopin <freddie.chopin@gmail.com> | 2017-04-23 21:11:09 +0100 |
| commit | 34eb2933d4a43adca556757e1a799ecbda88b0ec (patch) | |
| tree | 9b6373abec8f47c9927da8fbc6daa3814e856685 /src/jtag | |
| parent | 668347e8248aa97b2006e08d48fbdddc5931786b (diff) | |
| download | riscv-openocd-34eb2933d4a43adca556757e1a799ecbda88b0ec.zip riscv-openocd-34eb2933d4a43adca556757e1a799ecbda88b0ec.tar.gz riscv-openocd-34eb2933d4a43adca556757e1a799ecbda88b0ec.tar.bz2 | |
jtag/drivers cmsis-dap: fix speed setting on Atmel EDBG
Without the change Atmel EDBG uses default clock freq about 168 kHz
instead adapter_khz configured before interface init.
Changing adapter speed after init works as expected.
Testing shows the EDBG firmware resets speed to default during DAP_SWJ_Sequence.
Tested with fw versions 03.1F.01AE and 02.09.0169
This change repeats the DAP_SWJ_Clock command after sending a SWJ sequence.
Change-Id: Ic70457c5df635f47cad5e70b0dc83a083ea1b3a3
Reported-by: Ladislav Laska <laska@kam.mff.cuni.cz>
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/3944
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
Diffstat (limited to 'src/jtag')
| -rw-r--r-- | src/jtag/drivers/cmsis_dap_usb.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/jtag/drivers/cmsis_dap_usb.c b/src/jtag/drivers/cmsis_dap_usb.c index dd37522..cffd5e7 100644 --- a/src/jtag/drivers/cmsis_dap_usb.c +++ b/src/jtag/drivers/cmsis_dap_usb.c @@ -821,7 +821,13 @@ static int cmsis_dap_swd_switch_seq(enum swd_special_seq seq) return ERROR_FAIL; } - return cmsis_dap_cmd_DAP_SWJ_Sequence(s_len, s); + retval = cmsis_dap_cmd_DAP_SWJ_Sequence(s_len, s); + if (retval != ERROR_OK) + return retval; + + /* Atmel EDBG needs renew clock setting after SWJ_Sequence + * otherwise default frequency is used */ + return cmsis_dap_cmd_DAP_SWJ_Clock(jtag_get_speed_khz()); } static int cmsis_dap_swd_open(void) |