Différences

Ci-dessous, les différences entre deux révisions de la page.

--- start:arduino:esp32b:lora [2021/03/24 14:24] – créée gerardadmin
+++ start:arduino:esp32b:lora [2023/01/27 16:08] (Version actuelle) – modification externe 127.0.0.1
@@ Ligne 1: / Ligne 1: @@
 ======== Esp32 - Lora ========
+{{ :start:arduino:esp32b:400px-esp32-lora.jpg?direct&400 |}}
 ESP32 (32 bits, 2 cores, 180 MHz)
-    Connectivity
+    --Connectivity
-        WiFi
+        --WiFi
-        BLE
+        --BLE
-        LoRa (SX1276) 433MHz, 868MHz, 915MHz
+        --LoRa (SX1276) 433MHz, 868MHz, 915MHz
+==== Brochage ESP32 Lora ====
+{{ :start:arduino:esp32b:wifi-lora-32-v2-pinout-diagram.jpg?direct&600 |}}
+==== Liens web====
+[[https://hackaday.io/project/26991-esp32-board-wifi-lora-32|ESP32 WiFi LoRa]]
+[[https://cdn.hackaday.io/files/269911154782944/Heltec_WIFI-LoRa-32_DiagramPinout.jpg|Diagram Pinout]]
+[[https://github.com/Heltec-Aaron-Lee/WiFi_Kit_series/blob/master/InstallGuide/mac.md|Github]]
+[[https://iotbyhvm.ooo/esp32-lora/|Esp32-Lora EN]]
+[[http://translate.google.com/translate?hl=fr&sl=auto&tl=fr&u=https%3A%2F%2Frandomnerdtutorials.com%2Fesp32-lora-rfm95-transceiver-arduino-ide%2F| Exemples : Lora et LoraWan ESP32 FR ]]
+[[https://randomnerdtutorials.com/ttgo-lora32-sx1276-arduino-ide/|ESP32 LORA TTGO OLED]]
+====Configuration====
+{{ :start:arduino:esp32b:200px-esp32-lora-config.png?direct&200|}}
+==Programmes==
+**Carte1 (envoi)**
+Ouvrer et  televerser le programme : Examples > LoRaLibrary > OLED_LoRa_Sender
+**Carte 2 (Reception)**
+Ouvrer et  televerser le programme : Examples > LoRaLibrary > OLED_LoRa__Receiver
+**Ajouter la configuration  LoRaWAN**
+Ajoutez les déclarations suivantes dans les 2 programmes.
+<code c Lorawanconf.ino>
+...
+// LoRa API https://github.com/Heltec-Aaron-Lee/WiFi_Kit_series/blob/master/esp32/libraries/LoRa/API.md
+// LoRaWAN Parameters
+#define BAND    868100000  //you can set band here directly,e.g. 868E6,915E6
+#define PABOOST false
+#define TXPOWER 14
+#define SPREADING_FACTOR 12
+#define BANDWIDTH 125000
+#define CODING_RATE 5
+#define PREAMBLE_LENGTH 8
+#define SYNC_WORD 0x34
+void configForLoRaWAN()
+{
+  LoRa.setTxPower(TXPOWER);
+  LoRa.setSpreadingFactor(SPREADING_FACTOR);
+  LoRa.setSignalBandwidth(BANDWIDTH);
+  LoRa.setCodingRate4(CODING_RATE);
+  LoRa.setPreambleLength(PREAMBLE_LENGTH);
+  LoRa.setSyncWord(SYNC_WORD);
+  LoRa.crc();
+}
+String loraCfg = "Cfg:";
+void  displayLoRaConfig(int x, int y){
+  loraCfg =
+            "fr " + String(BAND/1000000, DEC)
+          + " sf" + String(SPREADING_FACTOR, DEC)
+          + " bw" + String(BANDWIDTH/1000, DEC)
+          + " cr" + String(CODING_RATE, DEC) + "/4";
+  display.drawString(x, y, loraCfg);
+  loraCfg =
+          + " pr" + String(PREAMBLE_LENGTH, DEC)
+          + " pw" + String(TXPOWER, DEC)
+          + " sw" + String(SYNC_WORD, HEX)
+          ;
+  display.drawString(x, y+10, loraCfg);
+}
+...
+  // should be done before LoRa.begin
+  configForLoRaWAN();
+  if (!LoRa.begin(BAND,PABOOST)) {
+    display.drawString(0, 0, "Starting LoRa failed!");
+    display.display();
+    while (1);
+  }
+  displayLoRaConfig(0,20);
+  display.drawString(0, 0, "LoRa Initial success!");
+...
+  display.display();
+...
-Links
-    [[https://hackaday.io/project/26991-esp32-board-wifi-lora-32|ESP32 WiFi LoRa]]
+</code>
-    [[https://cdn.hackaday.io/files/269911154782944/Heltec_WIFI-LoRa-32_DiagramPinout.jpg|Diagram Pinout]]
-    [[https://github.com/Heltec-Aaron-Lee/WiFi_Kit_series/blob/master/InstallGuide/mac.md|Github]]