2012-07-18 07:51 AM
Error : Cannot communicate with the device !
Check the SWD cable connection and check all the needed pin connections on the SWD connector.
Reboot the ST-Link with USB cable.
If the device has been programmed with Protection Level 2, no more communication is possible.
What went wrong?Advance help for Any Help #stm32f407vg-discovery #stm32-discovery #stm32-discovery2012-07-19 11:31 AM
BOOT0 = HIGH, RESET
That was meant to pull BOOT0 high, press and release the reset button, and try communication with the device than, i.e. a mass erase. Has your software set the Readout Protection in the option bytes ?2.in my application,audio is coming from jack.last 2 days audio does not come. Can you check the audio DAC ? Perhaps you have killed it somehow.
2012-07-20 10:42 PM
Thanks for your support,from clive1 and fm.i found the problem as you both suggest.The problem is solder bridge is broked because My stm32 discovery dropped unfortunately by me.so the problem occurs.Again thanks for your kind support.
:)2013-03-05 07:54 AM
hey , i was testing the flash driver of stm32f407vg. and during the testing of the option bytes i set the rdp of the flash to protection level 1. since then all debugging facilities have been disabled. even the firmware update is not helping my case.....please please help :(
2013-03-05 08:09 AM
If you can't get in with the ST-Link Utility software, try the boot trick as mentioned earlier in this thread. Then use a software like ST's Flash Loader Demonstrator to do a mass erase.
Firmware update has nothing to do with it, as this affects the ST-Link firmware (the STM32F103 on the discovery board), and not the target (F407). Better not play with RDP...2013-03-05 08:17 AM
thanks a lot fm... st link utility solved the problem :D