ST-LINK/V2 jtag/SWD probe fails to connect to the STM32 Micro

Posted on July 12, 2018 at 18:30

Hi everybody, please help if you know the answer. 

I have the following Micro and tools and unfortunately I am not able to debug the micro.  

STM32F439 MCU on a board (this is not a development board though)

System Workbench for STM32

IDE  //  ST-LINK/V2 jatg probe fails to connect 

STM32 ST-LINK Utility

tool

                /

/ ST-LINK/V2 jtag probe 

connects and I can program the Micro

 

note: NRST pin of the micro is not connected to NRST pin on the ST-LINK probe.  

I can connect and program the micro using the above utility tool. 

but I can not connect to the micro using the above IDE and it fails, the debugger console gives me the following message: 

Info : device id = 0x20016419

Info : flash size = 2048kbytes

Info : Stlink adapter speed set to 1125 kHz

adapter speed: 1125 kHz

Error: timed out while waiting for target halted

TARGET: STM32F439NIHx.cpu - Not halted

in procedure 'reset'

in procedure 'ocd_bouncer'

Info : Stlink adapter speed set to 1125 kHz

adapter speed: 1125 kHz

Error: timed out while waiting for target halted

TARGET: STM32F439NIHx.cpu - Not halted

in procedure 'reset'

in procedure 'ocd_bouncer'

Error: Target not halted

Error: failed erasing sectors 0 to 5

Error: flash_erase returned -304

shutdown command invoked

#stm32