Posted on August 17, 2016 at 12:34
Hi,
I'm implementing the read out protection for the F746 controller.
Changing it from level0 to level1 at the first start from my code.
First I realised that the level1 was setted but not saved after a power cycle. Then I realised that the HAL_libraries had an error
by modifying the OPTCR register. Because the level was writen to the first byte address of the register and not the second one. I solved this by just replacing the HAL_libraries with the new ones (V1.1.0 / 22-April-2016) .
Now it works. The problem is that it hangs out after setting the OPTSTRT bit in OPTCR register.
After a power cycle the level is set to 1.
My problem is that even if I do a system reset by calling NVIC_SystemReset() after HAL_FLASH_OB_Launch() I will never get there since my code was interrupted and does not come back.
This is the content of my stack by the error:
0xfffffffe
<signal handler called>() at
0xfffffff1
UART5_IRQHandler() at uart.c:
1.885
0x8000a10
<signal handler called>() at
0xfffffff9
OS_GetTime_ms() at OS.c:
179
0x80053a6
HAL_FLASH_WaitForLastOperation() at flash.c:
123
0x8001784
HAL_FLASH_OB_Launch() at flash.c:
123
0x8001984
FLASH_SetReadProtectionL1() at flash.c:
458
0x8001c28
SerialCmd_Test() at commandlib.c:
90
0x8003608
main() at main.c:
163
0x80056f8
The content of my function FLASH_SetReadProtectionL1() is this:
HAL_StatusTypeDef FLASH_SetReadProtectionL1(
void
){
HAL_StatusTypeDef status = HAL_ERROR;
HAL_FLASH_Unlock();
HAL_FLASH_OB_Unlock();
status = HAL_FLASH_OB_RDP_LevelConfig(OB_RDP_LEVEL_1);
if
(status == HAL_OK){
status = HAL_FLASH_OB_Launch();
}
// not working since HAL_FLASH_OB_Launch() does not return
//NVIC_SystemReset()
HAL_FLASH_OB_Lock();
HAL_FLASH_Lock();
return
status;
}
does any one has an idea why this is happening?
Best regartds
dev.
#stm32f7-read-protection-rdp
