diff options
| -rw-r--r-- | src/jtag/drivers/cmsis_dap_usb.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/src/jtag/drivers/cmsis_dap_usb.c b/src/jtag/drivers/cmsis_dap_usb.c index 19c3b19c..345c1fd7 100644 --- a/src/jtag/drivers/cmsis_dap_usb.c +++ b/src/jtag/drivers/cmsis_dap_usb.c @@ -958,11 +958,14 @@ static int cmsis_dap_init(void) retval = cmsis_dap_cmd_DAP_TFER_Configure(0, 64, 0); if (retval != ERROR_OK) return ERROR_FAIL; - /* Data Phase (bit 2) must be set to 1 if sticky overrun - * detection is enabled */ - retval = cmsis_dap_cmd_DAP_SWD_Configure(0); /* 1 TRN, no Data Phase */ - if (retval != ERROR_OK) - return ERROR_FAIL; + + if (swd_mode) { + /* Data Phase (bit 2) must be set to 1 if sticky overrun + * detection is enabled */ + retval = cmsis_dap_cmd_DAP_SWD_Configure(0); /* 1 TRN, no Data Phase */ + if (retval != ERROR_OK) + return ERROR_FAIL; + } retval = cmsis_dap_cmd_DAP_LED(0x03); /* Both LEDs on */ if (retval != ERROR_OK) |