How to Initialize and enable external interrupts and read data from GPIO

HI All,

Hardware: DRV8312base board, F2805X controller card

I am trying to create an external interrupt and  read data from GPIO. Then trigger motor to run with different config.

But I ran into a problem where I cannot read data from GPIO correctly. Always reading 0x00 from GPIO, (I sent 0x08)  

I am afraid that I did something wrong with initialization of external interrupts.

I modified proj_lab01.c--void main(void) as followings:

void main(void)
{
  // Only used if running from FLASH
  // Note that the variable FLASH is defined by the project
#ifdef FLASH
  // Copy time critical code and Flash setup code to RAM
  // The RamfuncsLoadStart, RamfuncsLoadEnd, and RamfuncsRunStart
  // symbols are created by the linker. Refer to the linker files.
  memCopy((uint16_t *)&RamfuncsLoadStart,(uint16_t *)&RamfuncsLoadEnd,(uint16_t *)&RamfuncsRunStart);
#endif

  // initialize the hardware abstraction layer
  halHandle = HAL_init(&hal,sizeof(hal));

  // set the hardware abstraction layer parameters
  HAL_setParams(halHandle,&gUserParams);

  // initialize the interrupt vector table
  HAL_initIntVectorTable(halHandle);

  // enable the EXT interrupts
  HAL_enableExtInts(halHandle);

  // enable global interrupts
  HAL_enableGlobalInts(halHandle);

  // enable debug interrupts
  HAL_enableDebugInt(halHandle);

The interrupt comes in as followings:

interrupt void writeSignalISR(void)
{
static int32_t temp;

HAL_Obj *obj = (HAL_Obj *)halHandle;

if(GPIO_getData(obj->gpioHandle, GPIO_Number_10) == 0)
{
if(ReceiveCommandFlag == 1)
{
HAL_setGpiodirection(halHandle, GPIO_Direction_Input);
temp = GPIO_getPortData(obj->gpioHandle, GPIO_Port_A);
temp &= 0x000000FF;
Command = temp;
DataCounter = 0;
if(Command == 0x08)//FW version
{ //PROD_VER_STUB 0x7E
TransmitData[0] = 0xFF;
TransmitData[1] = 0x80; //0xFE or 0xF4
TransmitData[2] = 0xFF;
GPIO_setPortData(obj->gpioHandle, GPIO_Port_A, TransmitData[DataCounter]);
while(GPIO_getData(obj->gpioHandle, GPIO_Number_8) == 0);//wait for WR=1
HAL_setGpiodirection(halHandle, GPIO_Direction_Output); //GPIO as output
}
else if(Command == 0)//ProductId
{.....................}

// acknowledge the XINT1 interrupt
HAL_acqExtInt(halHandle);

return;
} // end of writeSignalISR() function

I added break point after:

		  HAL_setGpiodirection(halHandle, GPIO_Direction_Input);
		  temp = GPIO_getPortData(obj->gpioHandle, GPIO_Port_A);
		  temp &= 0x000000FF;
		  Command = temp;

Temp always reading 0, it reads 128 sometimes at the beginning, then always read 0 afterward.  I used oscilloscope to check the hardware signals , there is definitely a WRITE signal coming from GPIO. But I am not able to read it correctly from debugged mode.

There are the initIntVectorTable:

//! \brief      Initializes the interrupt vector table
//! \details    Points the ISR to the function mainISR.
//! \param[in]  handle  The hardware abstraction layer (HAL) handle
static inline void HAL_initIntVectorTable(HAL_Handle handle)
 {
  HAL_Obj *obj = (HAL_Obj *)handle;
  PIE_Obj *pie = (PIE_Obj *)obj->pieHandle;


  ENABLE_PROTECTED_REGISTER_WRITE_MODE;

  pie->XINT1 = &writeSignalISR;
  pie->XINT2 = &readSignalISR;

  pie->SCIRXINTA = &sciarxISR;
  pie->SCIRXINTB = &scibrxISR;
  pie->SCIRXINTC = &scicrxISR;

  DISABLE_PROTECTED_REGISTER_WRITE_MODE;

  return;
 } // end of HAL_initIntVectorTable() function

Does anyone know how to fix this problem?