MSPM0C1106: the API to disable multiple IQRs

Joe Ji

Part Number: MSPM0C1106

Tool/software:

Hi Expert

Customer want to disable multiple IQRs at a time with one API, but seems our drivelib only has NVIC_DisableIRQ() to disable one IRQ at a time, does drivelib has other function to meet this need?

Thanks

Joe

3 months ago

0 Owen Li 3 months ago

TI__Expert 4301 points

Hi Joe,

I believe they can use __disable_irq(); to set PRIMASK to 1, which disables all interrupts except for NMI and Hard Fault, and __enable_irq(); to clear PRIMASK to 0 and enables all interrupts. These aren't part of TI's DriverLib, but rather instructions that exist for the ARM Cortex-M cores.

Best,

Owen

0 Joe Ji 3 months ago in reply to Owen Li

TI__Expert 3980 points

Hi Owen

Where can I find the API definition, seems it is not in core_CM0plus.h header file.

Thanks

Joe

+1 Owen Li 3 months ago in reply to Joe Ji

TI__Expert 4301 points

Hi Joe,

Depending on which compiler they are using, these functions are defined in the cmsis_x.h file, where the x is the compiler. For example, in cmsis_gcc.h, the definition is as follows:

For TI Clang (cmsis_ccs.h) it looks like this:

The ARM documentation may also be useful for you to look over: https://developer.arm.com/documentation/dui0662/b/Cortex-M0--Peripherals/Nested-Vectored-Interrupt-Controller/NVIC-usage-hints-and-tips

Best,

Owen

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MSPM0C1106: the API to disable multiple IQRs