MSP432P4111: raicsa

user4864857

Part Number: MSP432P4111

I just use MSP432P4111 start a TA0 timer and in the TA0_N_IRQHandler I start to send I2C. But I found in this interrupt routine it can't jump to I2C interrupt handler EUSCIB1_IRQHandler. I have already enable I2C interrupt.

If I send I2C not in the timer interrupt it can go to EUSCIB1_IRQHandler. Is that a problem? Please help.

over 6 years ago

0 Peter Spevak over 6 years ago

TI__Genius 17960 points

Hi,

to me it sounds like the interrupt settings are not configured for interrupt nesting. Please check the settings of the interrupt handling in the TRM

Best regards

Peter

0 user4864857 over 6 years ago in reply to Peter Spevak

Prodigy 100 points

Hi, Peter,

I didn't find anything about interrupt nesting setting in TRM. Can you help to figure out where is it?

Really thank you.

0 Peter Spevak over 6 years ago in reply to user4864857

TI__Genius 17960 points

Hi,

unfortunately with ARM MCUs it is a bit more complex about documentation. The standardized portions are basically described by the official ARM web pages. Please check e.g. the following links.

Best regards

Peter

0 user4864857 over 6 years ago in reply to Peter Spevak

Prodigy 100 points

Hi, Peter,

Find it. "Preventing an interruption to interrupt handlers"

Really thank you.

B.R.

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MSP432P4111: raicsa