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42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
/* Blink Example
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include <stdio.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "driver/gpio.h"
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#include "sdkconfig.h"
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/* Can use project configuration menu (idf.py menuconfig) to choose the GPIO to blink,
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or you can edit the following line and set a number here.
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*/
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#define BLINK_GPIO CONFIG_BLINK_GPIO
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void app_main(void)
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{
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/* Configure the IOMUX register for pad BLINK_GPIO (some pads are
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muxed to GPIO on reset already, but some default to other
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functions and need to be switched to GPIO. Consult the
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Technical Reference for a list of pads and their default
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functions.)
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*/
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gpio_reset_pin(BLINK_GPIO);
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/* Set the GPIO as a push/pull output */
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gpio_set_direction(BLINK_GPIO, GPIO_MODE_OUTPUT);
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while(1) {
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/* Blink off (output low) */
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printf("Turning off the LED\n");
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gpio_set_level(BLINK_GPIO, 0);
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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/* Blink on (output high) */
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printf("Turning on the LED\n");
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gpio_set_level(BLINK_GPIO, 1);
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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}
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}
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