Working of GPIO on RZ/A2M

Hi all,

Am trying to make the GPIO work on RZ/A2M, such that I can map it to a physical pin to observe it on an oscilloscope.

I am using the led code as a reference and trying to make the PORT_D_PIN_3 work as a GPIO to observe.

static uint32_t gs_main_gpio_flg;      /* Flag to toggle the signal on and off */
static int_t gs_my_gpio_handle;
static st_r_drv_gpio_pin_rw_t gs_pd3_hi =
{
	GPIO_PORT_D_PIN_3,
    GPIO_LEVEL_HIGH,
    GPIO_SUCCESS
};
static st_r_drv_gpio_pin_rw_t gs_pd3_lo =
{
	GPIO_PORT_D_PIN_3,
    GPIO_LEVEL_LOW,
    GPIO_SUCCESS
};
static const r_gpio_port_pin_t gs_led_pin_list[] =
{
	GPIO_PORT_D_PIN_3,
};



/**********************************************************************************************************************
 * Function Name: GPIO Toggle
 * Description  : This function is executed when the OSTM0 interrupt is received.
 *              : In this sample code, the processing to toggle the GPIOs on the CPU board.
 * Arguments    : uint32_t int_sense : Interrupt detection
 *              :                    :   INTC_LEVEL_SENSITIVE : Level sense
 *              :                    :   INTC_EDGE_TRIGGER    : Edge trigger
 * Return Value : none
 *********************************************************************************************************************/
void GPIO_Toggle()
{

    /* ==== Toggle GPIO ==== */
    gs_main_gpio_flg ^= 1;

    if (MAIN_PRV_GPIO_ON == gs_main_gpio_flg)
    {
        direct_control(gs_my_gpio_handle, CTL_GPIO_PIN_WRITE, &gs_pd3_hi);
    }
    else
    {
        direct_control(gs_my_gpio_handle, CTL_GPIO_PIN_WRITE, &gs_pd3_lo);
    }
}
/**********************************************************************************************************************
 * End of function GPIO Toggle function
***********************************************************************************************************************/
int_t main(void)
{
    /* GPIO initialization */
    int_t err;
    st_r_drv_gpio_pin_list_t pin_gpio;

	/**************************************************
	 * Initialise pins
	 **************************************************/
	gs_my_gpio_handle = direct_open("gpio", 0);

	if (gs_my_gpio_handle < 0)
	{
		/* stop execution */
		while (true)
		{
			/* Spin here forever.. */
			R_COMPILER_Nop();
		}
	}

	/**************************************************
	 * Initialise PD_3 pin parameterised in GPIO_SC_TABLE_MANUAL
	 **************************************************/
	pin_gpio.p_pin_list = gs_gpio_pin_list;
	pin_gpio.count = (sizeof(gs_gpio_pin_list)) / (sizeof(gs_gpio_pin_list[0]));
	err = direct_control(gs_my_gpio_handle, CTL_GPIO_INIT_BY_PIN_LIST, &pin_gpio);

	if (err < 0)
	{
		/* stop execution */
		while (true)
		{
			/* Spin here forever.. */
			R_COMPILER_Nop();
		}
	}
}

The code gets stuck in lines 77-85, kindly could you please help me with this?

Thanks!

Hope to hear from you soon.

Thanks!