MCU-PLUS-SDK-AM243X: SYS-MON UV Interrupt Event on R5F

Sven K

Reopen the thread below for AM243x.

How to get an interrupt for undervoltage detection with VMON-VSYS pin on R5 processor? Do you have a code example?

(+) PROCESSOR-SDK-AM64X: How to generate ESM interrupt event when under voltage is detected during the power fail? - Processors forum - Processors - TI E2E support forums

over 3 years ago

0 Erik Friedel over 3 years ago

TI__Expert 7585 points

Hello Sven,

Thank you for reopening this thread. We are meeting tomorrow morning to discuss the best implementation of a code example for an R5F interrupt based on a VMON-VSYS UV flag. I will have a response for you tomorrow afternoon.

Regards,

Erik

0 Erik Friedel over 3 years ago in reply to Erik Friedel

TI__Expert 7585 points

Hello Sven,

I am working on on the code example and plan to post it here next week.

Regards,

Erik

0 Sven K over 3 years ago in reply to Erik Friedel

Prodigy 80 points

Thanks in advance!

+1 Erik Friedel over 3 years ago in reply to Sven K

TI__Expert 7585 points

Hello Sven,

I have attached example code in the form of a CCS Project. The code enables the masks and global enables needed for both ESM's for an interrupt to R5FSS. The code simulates a VMON_VSYS undervoltage detection error event by writing a 1 to the bit that corresponds to PMIC_in_UV detection. This is no different than what would happen if a real under voltage event were to be detected by VMON_VSYS. I have also included a diagram that shows the high-level flow from the PMIC_in_UV event to the R5 interrupt.

Regards,

Erik