39 lines
1 KiB
C
39 lines
1 KiB
C
#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/queue.h"
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#include "driver/gpio.h"
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static xQueueHandle gpio_evt_queue = NULL;
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static void IRAM_ATTR gpio_isr_handler(void* arg)
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{
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uint32_t gpio_num = (uint32_t) arg;
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xQueueSendFromISR(gpio_evt_queue, &gpio_num, NULL);
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}
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static void gpio_task_example(void* arg) {
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uint32_t io_num;
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for(;;) {
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if(xQueueReceive(gpio_evt_queue, &io_num, portMAX_DELAY)) {
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printf("GPIO[%d] intr, val: %d\n", io_num, gpio_get_level(io_num));
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}
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}
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}
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void user_button_init() {
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gpio_config_t io_conf;
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io_conf.intr_type = GPIO_PIN_INTR_NEGEDGE;
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io_conf.mode = GPIO_MODE_INPUT;
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io_conf.pin_bit_mask = (1L << 0);
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io_conf.pull_down_en = 0;
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io_conf.pull_up_en = 0;
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gpio_config(&io_conf);
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gpio_evt_queue = xQueueCreate(10, sizeof(uint32_t));
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xTaskCreate(gpio_task_example, "gpio_task_example", 2048, NULL, 10, NULL);
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gpio_install_isr_service(0);
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gpio_isr_handler_add(0, gpio_isr_handler, (void*) 0);
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}
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