Serial refactoring and idf 4.4.7 for ESP32 (#1048)

* Split esp32 code from esp8266 for Serial

* split receive serial message and processing serial message in esp32 in different task

* Make the esp32 code backward compatible with Arduino esp32 2.0.17 / IDF 4.4.7

Author: luc-github

esp3d/configuration.h

@@ -611,11 +611,6 @@
  */
 #define ESP_SAVE_SETTINGS SETTINGS_IN_EEPROM
 
-/* Add serial task
- * ESP32 need to add a task to handle serial communication
- */
-#define SERIAL_INDEPENDANT_TASK
-
 /************************************
  *
  * Development setting

esp3d/src/core/esp3d_hal.cpp

@@ -34,8 +34,13 @@
 #endif  // __has_include ("rtc_wdt.h")
 #endif  // CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32S2
 #include <WiFi.h>
+#if ESP_ARDUINO_VERSION_MAJOR == 3
 #include <esp_adc/adc_continuous.h>
 #include <esp_adc/adc_oneshot.h>
+#endif  // ESP_ARDUINO_VERSION_MAJOR == 3
+#if ESP_ARDUINO_VERSION_MAJOR == 2
+#include <driver/adc.h>
+#endif  // ESP_ARDUINO_VERSION_MAJOR == 2  
 #include <esp_task_wdt.h>
 
 #if !CONFIG_IDF_TARGET_ESP32C6

esp3d/src/include/esp3d_sanity.h

@@ -20,6 +20,13 @@
 
 #pragma once
 
+/**************************
+ * Arduino core version
+ * ***********************/
+#if ESP_ARDUINO_VERSION_MAJOR == 1
+#error "ESP3D does not support Arduino Core 1.x.x"
+#endif
+
 /**************************
  * Settings
  * ***********************/

esp3d/src/modules/mDNS/mDNS.cpp

@@ -252,7 +252,12 @@ const char* mDNS_Service::answerIP(uint16_t index) {
     return "";
   }
 #if defined(ARDUINO_ARCH_ESP32)
+#if ESP_ARDUINO_VERSION_MAJOR == 3
   tmp = MDNS.address(index).toString();
+#endif  // ESP_ARDUINO_VERSION_MAJOR == 3
+#if ESP_ARDUINO_VERSION_MAJOR == 2
+  tmp = MDNS.IP(index).toString();
+#endif  // ESP_ARDUINO_VERSION_MAJOR == 2
 
 #endif  // ARDUINO_ARCH_ESP32
 #if defined(ARDUINO_ARCH_ESP8266)

esp3d/src/modules/serial/serial_service.h

@@ -24,6 +24,10 @@
 #include "../../core/esp3d_client_types.h"
 #include "../../core/esp3d_message.h"
 
+#if defined(ARDUINO_ARCH_ESP32)
+#include "../../core/esp3d_messageFifo.h"
+#endif  // ARDUINO_ARCH_ESP32
+
 #define ESP3D_SERIAL_BUFFER_SIZE 1024
 
 extern const uint32_t SupportedBaudList[];
@@ -36,11 +40,10 @@ class ESP3DSerialService final {
   void setParameters();
   bool begin(uint8_t serialIndex);
   bool end();
-  void updateBaudRate(long br);
+  void updateBaudRate(uint32_t br);
   void handle();
-  void process();
   bool reset();
-  long baudRate();
+  uint32_t baudRate();
   uint8_t serialIndex() { return _serialIndex; }
   const uint32_t *get_baudratelist(uint8_t *count);
   void flush();
@@ -52,8 +55,13 @@ class ESP3DSerialService final {
   void initAuthentication();
   void setAuthentication(ESP3DAuthenticationLevel auth) { _auth = auth; }
   ESP3DAuthenticationLevel getAuthentication();
-
+#if defined(ARDUINO_ARCH_ESP32)
+  void receiveCb();
+  static void receiveSerialCb();
+  static void receiveBridgeSeialCb();
+#endif  // ARDUINO_ARCH_ESP32
  private:
+  uint32_t _baudRate;
   ESP3DAuthenticationLevel _auth;
   uint8_t _serialIndex;
   ESP3DClientType _origin;
@@ -65,6 +73,10 @@ class ESP3DSerialService final {
   uint32_t _lastflush;
   uint8_t _buffer[ESP3D_SERIAL_BUFFER_SIZE + 1];  // keep space of 0x0 terminal
   size_t _buffer_size;
+#if defined(ARDUINO_ARCH_ESP32)
+  SemaphoreHandle_t _mutex;
+  ESP3DMessageFIFO _messagesInFIFO;
+#endif  // ARDUINO_ARCH_ESP32
   void push2buffer(uint8_t *sbuf, size_t len);
   void flushbuffer();
 };