Flashing problem in STM32F207

[Manikandan K]

I try to flash using st-link v2 but it show the error message. In my design I cant able to access the Boot 0 and Boot1 pins so no possibility to go for DFU mode.Please give any solution to flash using st-linkV2

kmani@kmani:~$ st-flash erase

2018-09-25T14:18:48 INFO src/stlink-usb.c: -- exit_dfu_mode

2018-09-25T14:18:48 INFO src/stlink-common.c: Loading device parameters....

2018-09-25T14:18:48 WARN src/stlink-common.c: unknown chip id! 0

Mass erasing

kmani@kmani:~$ st-flash erase

2018-09-25T14:19:11 INFO src/stlink-common.c: Loading device parameters....

2018-09-25T14:19:11 WARN src/stlink-common.c: unknown chip id! 0

Mass erasing

[Manikandan K]

Here I'm using tag-connect cable with 6-pins ​

[Tesla DeLorean]

If you have connection issues with BOOT0=HIGH, you should look for board level issues.

>>How should I isolate the offending code and stop it?

I find inspection and bisection to be useful methods.

[Manikandan K]

Actually that is working board now only it shows error like this ,I will try to give High on Boot0 pin​. Thank you sir for your suggestion.