Esempio n. 1
0
/* Configure GPIO pins to be used as LED and push button */
static void configure_gpios()
{
	mdev_t *pinmux_dev, *gpio_dev;

	/* Initialize  pinmux driver */
	pinmux_drv_init();

	/* Open pinmux driver */
	pinmux_dev = pinmux_drv_open("MDEV_PINMUX");

	/* Initialize GPIO driver */
	gpio_drv_init();

	/* Open GPIO driver */
	gpio_dev = gpio_drv_open("MDEV_GPIO");

	/* Configure GPIO pin function for GPIO connected to LED */
	pinmux_drv_setfunc(pinmux_dev, gpio_led, GPIO_LED_FN);

	/* Configure GPIO pin direction as Output */
	gpio_drv_setdir(gpio_dev, gpio_led, GPIO_OUTPUT);
	/* Keep initial state of LED: ON */
	gpio_drv_write(gpio_dev, gpio_led, 0);

	/* Close drivers */
	pinmux_drv_close(pinmux_dev);
	gpio_drv_close(gpio_dev);
}
/* Basic Sensor IO initialization to be done here

	This function will be called only once during sensor registration
 */
int ultrasonic_sensor_init(struct sensor_info *curevent)
{
	wmprintf("%s\r\n", __FUNCTION__);

	mdev_t *pinmux_dev, *gpio_dev;

	/* Initialize  pinmux driver */
	pinmux_drv_init();

	/* Open pinmux driver */
	pinmux_dev = pinmux_drv_open("MDEV_PINMUX");

	/* Initialize GPIO driver */
	gpio_drv_init();

	/* Open GPIO driver */
	gpio_dev = gpio_drv_open("MDEV_GPIO");

	/* Configure GPIO pin function for GPIO connected to LED */
	pinmux_drv_setfunc(pinmux_dev, ULTRASONIC_SEN_IO, ULTRASONIC_SEN_IO_GPIO);

	/* Confiugre GPIO pin direction as Input */
	gpio_drv_setdir(gpio_dev, ULTRASONIC_SEN_IO, GPIO_INPUT);

	/* Close drivers */
	pinmux_drv_close(pinmux_dev);
	gpio_drv_close(gpio_dev);

#ifdef ULTRASONIC_SENSOR_TEST
	check_ultrasonic_sensor();
#endif /* ULTRASONIC_SENSOR_TEST */

	return 0;
}
Esempio n. 3
0
// configuring gpios
static void configure_gpios()
{
	mdev_t *pinmux_dev, *gpio_dev;

	/* Initialize  pinmux driver */
	pinmux_drv_init();

	/* Open pinmux driver */
	pinmux_dev = pinmux_drv_open("MDEV_PINMUX");

	/* Initialize GPIO driver */
	gpio_drv_init();

	/* Open GPIO driver */
	gpio_dev = gpio_drv_open("MDEV_GPIO");

	/* Configure GPIO pin function for GPIO connected to LED */
	pinmux_drv_setfunc(pinmux_dev, gpio_led, GPIO_LED_FN);

	/* Configure GPIO pin direction as Output */
	gpio_drv_setdir(gpio_dev, gpio_led, GPIO_OUTPUT);
	/* Keep initial state of LED: ON */
	gpio_drv_write(gpio_dev, gpio_led, 0);

	/* Configure GPIO pin function for GPIO connected to push button */
	pinmux_drv_setfunc(pinmux_dev, gpio_pushbutton, GPIO_PUSHBUTTON_FN);

	/* Configure GPIO pin direction as input */
	gpio_drv_setdir(gpio_dev, gpio_pushbutton, GPIO_INPUT);

	/* Register a callback for push button interrupt */
	gpio_drv_set_cb(gpio_dev, gpio_pushbutton, GPIO_INT_FALLING_EDGE,
			NULL,
			pushbutton_press);

	/* Close drivers */
	pinmux_drv_close(pinmux_dev);
	gpio_drv_close(gpio_dev);
}