Open On-Chip Debugger 0.10.0-dev-00275-gd486ac2-dirty (2017-03-06-15:22) Licensed under GNU GPL v2 For bug reports, read http://openocd.org/doc/doxygen/bugs.html Info : auto-selecting first available session transport "hla_swd". To override use 'transport select '. Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD adapter speed: 2000 kHz adapter_nsrst_delay: 100 srst_only separate srst_nogate srst_open_drain connect_assert_srst srst_only separate srst_nogate srst_open_drain connect_assert_srst Info : Unable to match requested speed 2000 kHz, using 1800 kHz Info : Unable to match requested speed 2000 kHz, using 1800 kHz Info : clock speed 1800 kHz Error: libusb_open() failed with LIBUSB_ERROR_NOT_SUPPORTED Info : STLINK v2 JTAG v28 API v2 M v18 VID 0x0483 PID 0x374B Info : using stlink api v2 Info : Target voltage: 3.246966 Info : stm32f4x.cpu: hardware has 6 breakpoints, 4 watchpoints Info : accepting 'gdb' connection on tcp/3333 Info : Unable to match requested speed 2000 kHz, using 1800 kHz Info : Unable to match requested speed 2000 kHz, using 1800 kHz adapter speed: 1800 kHz stm32f4x.cpu: target state: halted target halted due to debug-request, current mode: Thread xPSR: 0x01000000 pc: 0x080032c4 msp: 0x20030000 configuring PLL Info : device id = 0x20016419 Info : flash size = 2048kbytes Info : Unable to match requested speed 2000 kHz, using 1800 kHz Info : Unable to match requested speed 2000 kHz, using 1800 kHz adapter speed: 1800 kHz stm32f4x.cpu: target state: halted target halted due to debug-request, current mode: Thread xPSR: 0x01000000 pc: 0x080032c4 msp: 0x20030000 Info : Unable to match requested speed 2000 kHz, using 1800 kHz Info : Unable to match requested speed 2000 kHz, using 1800 kHz adapter speed: 1800 kHz stm32f4x.cpu: target state: halted target halted due to debug-request, current mode: Thread xPSR: 0x01000000 pc: 0x080032c4 msp: 0x20030000 configuring PLL stm32f4x.cpu: target state: halted target halted due to breakpoint, current mode: Thread xPSR: 0x61000000 pc: 0x20000046 msp: 0x20030000 Info : Unable to match requested speed 2000 kHz, using 1800 kHz Info : Unable to match requested speed 2000 kHz, using 1800 kHz adapter speed: 1800 kHz stm32f4x.cpu: target state: halted target halted due to debug-request, current mode: Thread xPSR: 0x01000000 pc: 0x080032c4 msp: 0x20030000 Error: jtag status contains invalid mode value - communication failure Warn : target stm32f4x.cpu is not halted Polling target stm32f4x.cpu failed, trying to reexamine Examination failed, GDB will be halted. Polling again in 100ms Info : Previous state query failed, trying to reconnect