XINT1 on 28069

Michi M

Intellectual 490 points

Hi all,

I want to use GPIO9 to call XINT1.

------------------------------------------------------------------

GpioIntRegs.GPIOXINT1SEL.bit.GPIOSEL = 9;

GpioCtrlRegs.GPAMUX1.bit.GPIO9 = 0;
GpioCtrlRegs.GPADIR.bit.GPIO9 = 0;
GpioCtrlRegs.GPAQSEL1.bit.GPIO9 = 3;

XIntruptRegs.XINT1CR.bit.ENABLE = 1;
XIntruptRegs.XINT1CR.bit.POLARITY = 1;

PieCtrlRegs.PIEIER1.bit.INTx4 = 1; // Enable 1.4 in PIE
IER |= M_INT1;

----------------------------------------------------------------

#define INT1PL 1 // Group1 Interrupts (PIEIER1)

#define G14PL 2 // XINT1 (External)

----------------------------------------------------------------

// Connected to PIEIER1_4 (use MINT1 and MG14 masks):
#if (G14PL != 0)
interrupt void XINT1_ISR(void)
{
   // Set interrupt priority:
   volatile Uint16 TempPIEIER = PieCtrlRegs.PIEIER1.all;
   IER |= MINT1;                      // Set "global" priority
   PieCtrlRegs.PIEIER1.all &= MG14;   // Set "group" priority
   PieCtrlRegs.PIEACK.all = 0xFFFF;   // Enable PIE interrupts
   EINT;

       External_interrupt_on_GPIO9();

   // Restore registers saved:
   DINT;
   PieCtrlRegs.PIEIER1.all = TempPIEIER;

    // Next two lines for debug only to halt the processor here
    // Remove after inserting ISR Code
//    asm ("      ESTOP0");
//    for(;;);
}
#endif