STM32H7 (dual core): TAMPER do not interrupt on M4 but works in M7

[CVael.1]

Hello,

Recently I got a STM32H745I-Disco evaluation board. In this board, the user button (blue

button) is physically connected to PC13 pin and is the TAMPER 1.

I was able to get the TAMPER 1 interrupt working in the M7 core but not able to get the

interrupt in M4 core. I want to get TAMPER iterrupt on M4 becouse i set M7 to sleep.

I configured the RTC tamper 1 interrupt as following. (As i did in M7, I only change the initilizer to Cortex-M4)

 

This is the same configuration that I use in M7 core and works perfectly. The code that is autogenerated is the same in the M4 core than in the M7 core.

I add the following code as I did in M7 core.

But, the program never enters in the function because the TAMPER_1 is not working in M4 core.

Can someone explain if i need to configure tamper different to be used in M4 core

than M7 core?

Is possible to get TAMPER interrupt in M4 core?

Thank you very much.

[FBL]

Hello @CVael.1​,

Can you specify the version of CubeMX you are using. Actually, I can find that tamper 1 and tamper 3 should not support it in CubeMX6.7.0

[CVael.1]

Hello,

I'm using STM32CubeIDE 10.0.1, finally i just dicovered that TAMPER 1 is working in M7 and M4.

But the problem is that I need to unplug and plug the dev-board to "restore" the tamper every time.

If I don't unplug and plug the dev-board the tamper do not interrupt.

Best regards,

Carlos.

[FBL]

Hello @CVael.1​ ,

I was wondering if the issue is solved, if not, could you please try to run a sample example or try to clear the Tamper interrupt pending bit.    __HAL_RTC_TAMPER_CLEAR_FLAG(hrtc, RTC_FLAG_TAMP1F);