📟 pmme-device: backporting - GPIO button

pmme-device/c-version/main/pmme.c

@@ -12,6 +12,7 @@
 
 #include "driver/i2c_master.h"
 #include "driver/uart.h"
+#include "driver/gpio.h"
 #include "ssd1306/ssd1306.h"
 
 static const char *TAG = "PMME-Device";
@@ -29,6 +30,8 @@ static const char *TAG = "PMME-Device";
 #define UART_BUF_SIZE 128
 #define TXD_PIN 17
 #define RXD_PIN 16
+#define BUTTON_PIN  GPIO_NUM_5
+#define LED_PIN     GPIO_NUM_19
 
 #define SWAP_BYTES(x) ((x >> 8) | (x << 8))
 
@@ -202,6 +205,10 @@ void oled_display_task_manual(void *pvParameters) {
 void oled_display_task(void *pvParameters) {
     init_ssd1306();
     char pm25_str[128];
+
+    ssd1306_fill_screen();
+    vTaskDelay(pdMS_TO_TICKS(3000));
+
     while (1) {
         uint16_t pm25_value = 0;
         if (xSemaphoreTake(sensor_data_mutex, pdMS_TO_TICKS(10))) {
@@ -219,6 +226,41 @@ void oled_display_task(void *pvParameters) {
     }
 }
 
+void button_led_task(void *pvParameters) {
+    gpio_config_t io_conf = {
+        .pin_bit_mask = (1ULL << LED_PIN),
+        .mode = GPIO_MODE_OUTPUT,
+        .pull_up_en = GPIO_PULLUP_DISABLE,
+        .pull_down_en = GPIO_PULLDOWN_DISABLE,
+        .intr_type = GPIO_INTR_DISABLE,
+    };
+    gpio_config(&io_conf);
+
+    io_conf.pin_bit_mask = (1ULL << BUTTON_PIN);
+    io_conf.mode = GPIO_MODE_INPUT;
+    io_conf.pull_up_en = GPIO_PULLUP_ENABLE;
+    gpio_config(&io_conf);
+
+    gpio_set_level(LED_PIN, 0);
+
+    int curr_state = 1; // HIGH
+    bool is_pressed = false;
+    while (1) {
+        int level = gpio_get_level(BUTTON_PIN);
+        is_pressed = false;
+        if (curr_state == 1 && level == 0) {
+            gpio_set_level(LED_PIN, 1);
+            curr_state = 0;
+            is_pressed = true;
+        } else if (curr_state == 0 && level == 1) {
+            gpio_set_level(LED_PIN, 0);
+            curr_state = 1;
+            is_pressed = true;
+        }
+        vTaskDelay(pdMS_TO_TICKS(is_pressed ? 100 : 10));
+    }
+}
+
 void app_main(void) {
     sensor_data_mutex = xSemaphoreCreateMutex();
     if (sensor_data_mutex == NULL) {
@@ -227,4 +269,5 @@ void app_main(void) {
     }
     xTaskCreate(pm_sensor_task, "pm_sensor_task", 4096, NULL, 5, NULL);
     xTaskCreate(oled_display_task, "oled_display_task", 4096, NULL, 5, NULL);
+    xTaskCreate(button_led_task, "button_led_task", 2048, NULL, 5, NULL);
 }

pmme-device/c-version/main/ssd1306/ssd1306.c

@@ -559,3 +559,19 @@ esp_err_t i2c_ssd1306_buffer_to_ram(i2c_ssd1306_handle_t *i2c_ssd1306)
 
     return err;
 }
+
+// My Functions
+esp_err_t ssd1306_fill_screen(void) {
+    i2c_ssd1306_buffer_fill(&i2c_ssd1306);
+    return i2c_ssd1306_buffer_to_ram(&i2c_ssd1306);
+}
+
+void init_ssd1306_no_splash(void)
+{
+    i2c_new_master_bus(&i2c_master_bus_config, &i2c_master_bus);
+    i2c_ssd1306_init(i2c_master_bus, i2c_ssd1306_config, &i2c_ssd1306);
+    // i2c_ssd1306_buffer_image(&i2c_ssd1306, 32, 0, (const uint8_t *)ssd1306_logo, 64, 64, false);
+    // i2c_ssd1306_buffer_to_ram(&i2c_ssd1306);
+    vTaskDelay(1000 / portTICK_PERIOD_MS);
+    i2c_ssd1306_buffer_clear(&i2c_ssd1306);
+}

pmme-device/c-version/main/ssd1306/ssd1306.h

@@ -282,3 +282,8 @@ esp_err_t i2c_ssd1306_pages_to_ram(i2c_ssd1306_handle_t *i2c_ssd1306, uint8_t in
  * @return ESP_OK on success, or an error code otherwise.
  */
 esp_err_t i2c_ssd1306_buffer_to_ram(i2c_ssd1306_handle_t *i2c_ssd1306);
+
+// My Functions;
+esp_err_t ssd1306_fill_screen(void);
+void init_ssd1306_no_splash(void);
+