Arm Mbed and Pelion Device Management support forum

MbedOS Fault Handler

I am using STM32F767ZI. When ever I am trying to reset the board its replying with the error message below:
++ MbedOS Fault Handler ++
FaultType: HardFault
Context:R0 : 20006E88
R1 : 00000000
R2 : 08012341
R3 : 00000005
R4 : 20005D44
R5 : 20006A14
R6 : 0800CA9C
R7 : 00000027
R8 : 20005AD4
R9 : 00000000
R10 : 00000000
R11 : 00000000
R12 : 0801000B
SP : 20005A40
LR : 080055A7
PC : 00000000
xPSR : 00000000
PSP : 200059D8
MSP : 2007FFD8
CPUID: 411FC270
HFSR : 40000000
MMFSR: 00000000
BFSR : 00000000
UFSR : 00000002
DFSR : 0000000B
AFSR : 00000000
Mode : Thread
Priv : Privileged
Stack: PSP
– MbedOS Fault Handler –
++ MbedOS Error Info ++
Error Status: 0x80FF013D Code: 317 Module: 255
Error Message: Fault exception
Location: 0x800CF3F
Error Value: 0x0
Current Thread: main Id: 0x20006194 Entry: 0x800D2A3 StackSize: 0x1000 StackMem: 0x20004B70 SP: 0x2007FF7C
For more info, visit: https://mbed.com/s/error?error=0x80FF013D&osver=51201&core=0x411FC270&comp=1&ver=6130008&tgt=NUCLEO_F767ZI
– MbedOS Error Info –
= System will be rebooted due to a fatal error =
= Reboot count(=2) reached maximum, system will halt after rebooting

Ahoj,
you must be more specific.
I tried a reset of the F767 board by the onboard reset button or by a software command like is NVIC_SystemReset(); and both work.

BR, Jan

Reset restarts the latest program you flashed your board with. And that appears to be faulty. Try to program your board with a simple blinky program.