I am using custom board with stm32f446re7 controller. For flashing that, I am using ST-Link/V2 debugger.
Custom board has SWD 6 pin connector. Did below connections from ST-LINK/V2 to custom SWD connector. But facing below issue even after changing reset mode to "software reset mode" and changing the stm32f4x.cfg file for reset_config to none.
ST-LINK/V2 Custom board connector
VCC (pin 1) --> 5V
SWDIO (pin 7) --> SWDIO
SWCLK (pin 9) --> SWCLK
GND(pin 6) --> GND
RESET(pin 15) --> NSRT
SWO (pin 13) --> SWO
Open On-Chip Debugger 0.10.0+dev-00021-g524e8c8 (2019-04-12-08:48)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
none separate
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
adapter speed: 8000 kHz
adapter_nsrst_delay: 100
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : clock speed 8000 kHz
Info : STLINK v2 JTAG v31 API v2 SWIM v7 VID 0x0483 PID 0x3748
Info : using stlink api v2
Info : Target voltage: 3.215124
Info : Unable to match requested speed 8000 kHz, using 4000 kHz
Info : Stlink adapter speed set to 4000 kHz
Info : STM32F446RETx.cpu: hardware has 6 breakpoints, 4 watchpoints
Info : Listening on port 3333 for gdb connections
Info : accepting 'gdb' connection on tcp/3333
Info : device id = 0x10006421
Warn : STM32 flash size failed, probe inaccurate - assuming 512k flash
Info : flash size = 512kbytes
undefined debug reason 7 - target needs reset
Error: timed out while waiting for target halted
TARGET: STM32F446RETx.cpu - Not halted
in procedure 'reset'
in procedure 'ocd_bouncer'
Error: Target not halted
Error: failed erasing sectors 0 to 0
Error: flash_erase returned -304
Can someone helps here?
