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** [tickets:#338] Unknown/unexpected STLINK status code 0x4**
**Status:** new
**Milestone:** 0.11.0
**Created:** Thu Feb 24, 2022 08:10 AM UTC by Weixuan XIAO
**Last Updated:** Thu Feb 24, 2022 08:10 AM UTC
**Owner:** nobody
Hi, I am trying to connect to a ST-Link using dapdirect_jtag transport:
`openocd -f ./interface/stlink-dap.cfg -c "transport select dapdirect_jtag" -f
./target/bcm2836.cfg -d`
During the initialization, the USB version check and voltage check seem ok.
However the error check reports an unknown/unexpected status code, and it fails.
Debug: 199 34 stlink_usb.c:5055 stlink_dap_init(): stlink_dap_init()
Debug: 200 34 stlink_usb.c:3685 stlink_open(): stlink_open
Debug: 201 34 stlink_usb.c:3697 stlink_open(): transport: 3 vid: 0x0483
pid: 0x3744 serial:
Debug: 202 34 stlink_usb.c:3697 stlink_open(): transport: 3 vid: 0x0483
pid: 0x3748 serial:
Debug: 203 34 stlink_usb.c:3697 stlink_open(): transport: 3 vid: 0x0483
pid: 0x374b serial:
Debug: 204 34 stlink_usb.c:3697 stlink_open(): transport: 3 vid: 0x0483
pid: 0x374d serial:
Debug: 205 34 stlink_usb.c:3697 stlink_open(): transport: 3 vid: 0x0483
pid: 0x374e serial:
Debug: 206 34 stlink_usb.c:3697 stlink_open(): transport: 3 vid: 0x0483
pid: 0x374f serial:
Debug: 207 34 stlink_usb.c:3697 stlink_open(): transport: 3 vid: 0x0483
pid: 0x3752 serial:
Debug: 208 34 stlink_usb.c:3697 stlink_open(): transport: 3 vid: 0x0483
pid: 0x3753 serial:
Debug: 209 34 stlink_usb.c:3697 stlink_open(): transport: 3 vid: 0x0483
pid: 0x3754 serial:
Info : 210 63 stlink_usb.c:1429 stlink_usb_version(): STLINK V2J28S7 (API
v2) VID:PID 0483:3748
Debug: 211 73 stlink_usb.c:1654 stlink_usb_exit_mode(): MODE: 0x01
Info : 212 111 stlink_usb.c:1465 stlink_usb_check_voltage(): Target
voltage: 3.248742
Debug: 213 111 stlink_usb.c:1722 stlink_usb_init_mode(): MODE: 0x01
Debug: 214 111 stlink_usb.c:3088 stlink_dump_speed_map(): Supported clock
speeds are:
Debug: 215 111 stlink_usb.c:3091 stlink_dump_speed_map(): 9000 kHz
Debug: 216 111 stlink_usb.c:3091 stlink_dump_speed_map(): 4500 kHz
Debug: 217 111 stlink_usb.c:3091 stlink_dump_speed_map(): 2250 kHz
Debug: 218 111 stlink_usb.c:3091 stlink_dump_speed_map(): 1125 kHz
Debug: 219 111 stlink_usb.c:3091 stlink_dump_speed_map(): 562 kHz
Debug: 220 111 stlink_usb.c:3091 stlink_dump_speed_map(): 281 kHz
Debug: 221 111 stlink_usb.c:3091 stlink_dump_speed_map(): 140 kHz
Debug: 222 127 stlink_usb.c:1125 stlink_usb_error_check():
unknown/unexpected STLINK status code 0x4
Error: 223 127 stlink_usb.c:3740 stlink_open(): init mode failed (unable to
connect to the target)
Debug: 224 134 stlink_usb.c:1654 stlink_usb_exit_mode(): MODE: 0x01
Debug: 225 135 command.c:555 run_command(): Command 'init' failed with
error code -4
The build I use is commit 94e7535be85a7bd5905dec68b6eae9a98aae0d7e on master
branch, including the resolution https://review.openocd.org/6443 of
https://sourceforge.net/p/openocd/tickets/325/
So, I assume they are not duplicated.
The version info is: `Open On-Chip Debugger 0.11.0+dev-00572-g94e7535be
(2022-02-24-09:00)`
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