LP-AM243: Adding Interrupt

EyalCo

Part Number: LP-AM243
Other Parts Discussed in Thread: SYSCONFIG

Hi,

I a bit confused of how to set up a new interupt on the LP243, and what is auto-generated by Sysconfig and what should I write manually.

For example, when I add a GPIO in sysconfig, I set its trigger to Falling Edge, and I want it to execute an ISR that I will write on Falling Edge. What is the process I should follow in order to register an interrupt and so on.

If I look at the gpio_interrupt example, I see they register it that way:

pinNum = GPIO_PUSH_BUTTON_PIN;
intrNum = Board_getGpioButtonIntrNum();
bankNum = GPIO_GET_BANK_INDEX(pinNum);

/* Address translate */
gGpioBaseAddr = (uint32_t) AddrTranslateP_getLocalAddr(gGpioBaseAddr);

/* Setup GPIO for interrupt generation */
GPIO_setDirMode(gGpioBaseAddr, pinNum, GPIO_PUSH_BUTTON_DIR);
GPIO_setTrigType(gGpioBaseAddr, pinNum, GPIO_PUSH_BUTTON_TRIG_TYPE);
GPIO_bankIntrEnable(gGpioBaseAddr, bankNum);

Is Board_getGpioButtonIntrNum() auto-generated?

over 3 years ago

0 Frank Livingston over 3 years ago

TI__Mastermind 29338 points

Hi E.C,

This can be a bit complex because of the MAIN domain and MCU domain GPIO Interrupt Routers, and the need to use Sciclient to configure the interrupt routes.

To start, can you please check to see if these threads help answer your questions?

EyalCo said:
Is Board_getGpioButtonIntrNum() auto-generated?

No, this isn't generated code. The source code is available in the application source code file board.c.

Regards,
Frank

0 EyalCo over 3 years ago in reply to Frank Livingston

TI__Expert 3580 points

Hi Frank, thanks for the reply.

those thread weren't helpful unfortunately. I am looking to understand how to register a new interrupt, a regular one on a GPIO for example. Is there any module that shows what should I configure and so on?

0 Frank Livingston over 3 years ago in reply to EyalCo

TI__Mastermind 29338 points

Hi E.C,

Ok, thanks for the feedback.

EyalCo said:
Is there any module that shows what should I configure and so on?

Do you mean training or documentation? I don't think so. I'll confirm and get back with you.

This question comes up pretty often. Rather than answering here, I would prefer to create a FAQ and point you to that. Does that work for you?

Regards,
Frank

0 EyalCo over 3 years ago in reply to Frank Livingston

TI__Expert 3580 points

Yes this would be useful for my needs and also for customer needs.

It's not that clear how to register an interrupt once configure some new GPIO in SysConfig. For example, I configured a GPIO as an input and to trigger in rising edge. now I want to understand how to actually register the interrupt to this GPIO and so on

Thanks