CCS/MSP432P4111: Why the GPIO Interrupt can not goto the Callback function on P2.4 ?

Andoon

Part Number: MSP432P4111

Tool/software: Code Composer Studio

Hi, there.

I have a GPIO Interrupt on P2.4 with RTOS, the code is:

{
  ....
  ....
  GPIO_setConfig(P_GPIO_P2_4, GPIO_CFG_IN_PU   | GPIO_CFG_IN_INT_FALLING);
  /* install Button callback */
  GPIO_setCallback(P_GPIO_P2_4, gpioFpgaFxn0);
  /* Enable interrupts */
  GPIO_enableInt(P_GPIO_P2_4);

  /* Start BIOS */
  BIOS_start();

  return (0);
}

/**
 *  Callback function for the FPGA interrupt to be read.
 */
void gpioFpgaFxn0(uint_least8_t index)
{
    Semaphore_post(Semaphore_handle(&FPGA_spiTaskAlert));
}

And I see the REG:

it has the P2IFG = 0x10, P2IV = P2IFG4.

But the code can not goto the Callback function......

What should I do next ?

Thanks a lot.

over 6 years ago

0 Alexis Crandall20 over 6 years ago

TI__Genius 15590 points

Hi Andoon,

Have you looked at the gpiointerrupt example in the SDK? If not I would start there: http://dev.ti.com/tirex/explore/node?node=AMCIoqQ1EBk6pk.C5GpxzA__z-lQYNj__LATEST

It is typically recommended not to use any TI Drivers API calls before the RTOS is started, so I would recommend moving your GPIO API calls to a task instead.

Thanks,

Alexis

0 Andoon over 6 years ago in reply to Alexis Crandall20

Intellectual 610 points

Hi,

Alexis.

Thanks for your advice.

I find out the problem.

When you define the pin as input interrupt function, you must notice three piont.

1. Enum of GPIO names in MSP_EXP432P4111.h You'd better put the interrupt pin first.

2. Array of Pin configurations in MSP_EXP432P4111.c As We all know.

3. This is important piont.

The order of the pin configurations must coincide with what was defined in MSP_EXP432P4111.h

That's all.

Thanks a lot.

**Attention** This is a public forum

MSP low-power microcontrollers

MSP low-power microcontroller forum

CCS/MSP432P4111: Why the GPIO Interrupt can not goto the Callback function on P2.4 ?