30 lines
901 B
C
30 lines
901 B
C
#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "driver/gpio.h"
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#define HEARTBEAT_GPIO GPIO_NUM_5
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#define HEARTBEAT_PERIOD_MS 250
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void heartbeat_task(void *pvParameter)
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{
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/* Configure the IOMUX register for pad HEARTBEAT_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_pad_select_gpio(HEARTBEAT_GPIO);
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/* Set the GPIO as a push/pull output */
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gpio_set_direction(HEARTBEAT_GPIO, GPIO_MODE_OUTPUT);
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while(1) {
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/* Heartbeat off (output low) */
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gpio_set_level(HEARTBEAT_GPIO, 0);
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vTaskDelay(HEARTBEAT_PERIOD_MS / portTICK_PERIOD_MS);
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/* Heartbeat on (output high) */
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gpio_set_level(HEARTBEAT_GPIO, 1);
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vTaskDelay(HEARTBEAT_PERIOD_MS / portTICK_PERIOD_MS);
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}
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}
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