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#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
#include <freertos/queue.h>
#include <driver/gpio.h>
#include <esp_log.h>
#include "epd.h"
#include "util.h"
#include "doc.h"
#define IO_PG_PREV GPIO_NUM_21
#define IO_PG_NEXT GPIO_NUM_22
#define IO_INTR_FLAG_DEFAULT 0
static const char* TAG = "app";
static size_t page = 0;
static QueueHandle_t gpio_evt_queue = NULL;
static void gpio_task(void* arg)
{
uint32_t io_num;
for(;;) {
if(xQueueReceive(gpio_evt_queue, &io_num, portMAX_DELAY)) {
if (io_num == IO_PG_NEXT) {
if (page < data_len - 1) {
epd_draw(data[++page]);
gpio_intr_enable(IO_PG_NEXT);
gpio_intr_enable(IO_PG_PREV);
} else {
epd_clear();
epd_sleep();
}
}
else if (io_num == IO_PG_PREV) {
if (page > 0) {
epd_draw(data[--page]);
gpio_intr_enable(IO_PG_NEXT);
gpio_intr_enable(IO_PG_PREV);
} else {
epd_clear();
epd_sleep();
}
}
else {
delay_ms(500);
gpio_intr_enable(IO_PG_NEXT);
gpio_intr_enable(IO_PG_PREV);
}
}
}
}
static void gpio_isr_handler(void *arg)
{
gpio_intr_disable(IO_PG_PREV);
gpio_intr_disable(IO_PG_NEXT);
uint32_t gpio_num = (uint32_t) arg;
xQueueSendFromISR(gpio_evt_queue, &gpio_num, NULL);
}
void app_main(void)
{
epd_init();
ESP_LOGI(TAG, "initialized e-paper display");
gpio_config_t io_cfg = {
.pin_bit_mask = ((1ULL << IO_PG_PREV) | (1ULL << IO_PG_NEXT)),
.mode = GPIO_MODE_INPUT,
.pull_up_en = true,
.intr_type = GPIO_INTR_NEGEDGE
};
ESP_ERROR_CHECK(gpio_config(&io_cfg));
gpio_evt_queue = xQueueCreate(10, sizeof(uint32_t));
xTaskCreate(gpio_task, "gpio_task", 2048, NULL, 10, NULL);
gpio_install_isr_service(IO_INTR_FLAG_DEFAULT);
gpio_isr_handler_add(IO_PG_PREV, gpio_isr_handler, (void *) IO_PG_PREV);
gpio_isr_handler_add(IO_PG_NEXT, gpio_isr_handler, (void *) IO_PG_NEXT);
epd_clear();
delay_ms(500);
epd_draw(data[0]);
}
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