Question
Му Core is held in reset!
Hi All,
My board is built on the STM32F746IG.
Some time after the launch of the firmware (3 different firmware) access via SWD is unavailable.
Stm32_Link_Utility reports:
- Core is held in reset
- Can not connect to target!
.....
.....
Vnrst = 0.3 V, despite the connection to Vcc through resistor.
When I select the "Hot plug" mode, I can connect, but the flash is not available and cannot be erased.
This goes on for a long time.
I turn off the power. I measure the resistance of the line nrst.
Sometimes I just wait a long time :)
The board is again available, within an hour or two:
Vnrst = 2.98 V
The firmware works.
After some time, the problem repeats.