OTA task

esp32/main/sampler_task.cpp

@@ -11,35 +11,52 @@ extern "C" {
 // буфер
 static ringbuf_t rb;
 
-ringbuf_t* sampler_get_buffer() {
+ringbuf_t* sampler_get_buffer()
+{
     return &rb;
 }
 
-static void sampler_task(void *arg) {
-    
+static TaskHandle_t sampler_task_handle = nullptr;
+
+static void sampler_task(void* arg)
+{
     const TickType_t period = pdMS_TO_TICKS(6000);
     TickType_t last_wake = xTaskGetTickCount();
 
-    while (1) {
+    while (1)
+    {
         int64_t now_ms = esp_timer_get_time() / 1000;
 
         float temp = ds18b20_read();
         ringbuf_push(&rb, now_ms, (int)(temp * 100));
 
-        vTaskDelayUntil(&last_wake, period);// 6 секунд
+        vTaskDelayUntil(&last_wake, period); // 6 секунд
     }
 }
 
-void sampler_task_start() {
-    ringbuf_init(&rb);
-    ds18b20_init(GPIO_NUM_27);  // новый драйвер
+void sampler_task_start()
+{
+    if (sampler_task_handle == nullptr)
+    {
+        ringbuf_init(&rb);
+        ds18b20_init(GPIO_NUM_27); // новый драйвер
 
-    xTaskCreate(
-        sampler_task,
-        "sampler",
-        4096,
-        NULL,
-        5,
-        NULL
-    );
-}
+        xTaskCreate(
+            sampler_task,
+            "sampler",
+            4096,
+            nullptr,
+            5,
+            &sampler_task_handle
+        );
+    }
+}
+
+void sampler_task_stop()
+{
+    if (sampler_task_handle != nullptr)
+    {
+        vTaskDelete(sampler_task_handle);
+        sampler_task_handle = nullptr;
+    }
+}