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/*******************************************************************************
 * MSP432 Interrupt Controller - Software Pending
 *
 * Description: This simple code example shows users how to pend interrupt
 * from software. This allows users to "simulate" hardware conditions by
 * forcing certain interrupts to fire with the interrupt controller. In this
 * example, a Port 1 interrupt is written to toggle the LED on P1.0. In the
 * main loop for the program however, the pend interrupt function is used
 * in conjunction with a a delay loop to forcibly call this ISR. Additionally,
 * the user can use the switch on P1.1 to trigger an actual hardware interrupt.
 *
 *                MSP432P401
 *             ------------------
 *         /|\|                  |
 *          | |                  |
 *          --|RST         P1.0  |---> P1.0 LED
 *            |                  |
 *            |            P1.1  |<--Toggle Switch
 *            |                  |
 *            |                  |
 *
 ******************************************************************************/
/* DriverLib Includes */
#include <ti/devices/msp432p4xx/driverlib/driverlib.h>

/* Standard Includes */
#include <stdint.h>
#include <stdbool.h>
#include <math.h>

/* Statics */
static volatile bool flipFlop;

int main(void)
{
    volatile uint32_t ii;

    MAP_WDT_A_holdTimer();

    /* Configuring P6.7 as an input. P1.0 as output and enabling interrupts */
    MAP_GPIO_setAsInputPinWithPullUpResistor(GPIO_PORT_P1, GPIO_PIN1);
    MAP_GPIO_setAsOutputPin(GPIO_PORT_P1, GPIO_PIN0);
    MAP_GPIO_clearInterruptFlag(GPIO_PORT_P1, GPIO_PIN1);
    MAP_GPIO_enableInterrupt(GPIO_PORT_P1, GPIO_PIN1);

    MAP_Interrupt_enableInterrupt(INT_PORT1);
    MAP_Interrupt_enableMaster();

    while(1)
    {
        for(ii=0;ii<5000;ii++)
        {

        }

        /* Forcing an interrupt pend */
        MAP_Interrupt_pendInterrupt(INT_PORT1);
    }
}

/* GPIO ISR */
void PORT1_IRQHandler(void)
{
    uint32_t status;

    status = MAP_GPIO_getEnabledInterruptStatus(GPIO_PORT_P1);
    MAP_GPIO_clearInterruptFlag(GPIO_PORT_P1, status);
    MAP_GPIO_toggleOutputOnPin(GPIO_PORT_P1, GPIO_PIN0);

}

