Enable display in Heltec V3

src/Display/SSD1306.cpp

@@ -1,4 +1,9 @@
 #include "SSD1306.h"
+#include "../System/System.h"
+
+#define MODULE_NAME "SSD1306"
+
+extern System        LoRaSystem;
 
 SSD1306::SSD1306(TwoWire *wire, uint8_t address, OLEDDISPLAY_GEOMETRY g) : OLEDDisplay(g), _wire(wire), _address(address) {
   sendInitCommands();
@@ -23,13 +28,21 @@ void SSD1306::internDisplay(Bitmap *bitmap) {
       Wire.write(bitmap->_buffer[i]);
       i++;
     }
-    Wire.endTransmission();
+    int ret = Wire.endTransmission();
+    if (ret != 0)
+    {
+        LoRaSystem.getLogger().log(logging::LoggerLevel::LOGGER_LEVEL_ERROR, MODULE_NAME, "send bitmap error");
+    }
   }
 }
 
 void SSD1306::sendCommand(uint8_t command) {
   _wire->beginTransmission(_address);
   _wire->write(0x80);
   _wire->write(command);
-  _wire->endTransmission();
+  int ret = _wire->endTransmission();
+  if (ret != 0)
+  {
+      LoRaSystem.getLogger().log(logging::LoggerLevel::LOGGER_LEVEL_ERROR, MODULE_NAME, "command error");
+  }
 }

src/LoRa_APRS_iGate.cpp

@@ -62,6 +62,13 @@ BeaconTask   beaconTask(toModem, toAprsIs);
 void setup() {
   Serial.begin(115200);
   LoRaSystem.getLogger().setSerial(&Serial);
+
+#ifdef HELTEC_V3
+  // Power the display
+  pinMode(36, OUTPUT);
+  digitalWrite(36, LOW);
+#endif
+
   setWiFiLogger(&LoRaSystem.getLogger());
   delay(1000);
   LoRaSystem.getLogger().log(logging::LoggerLevel::LOGGER_LEVEL_INFO, MODULE_NAME, "LoRa APRS iGate by OE5BPA (Peter Buchegger)");
@@ -150,7 +157,7 @@ void setup() {
       ;
   }
 
-  if (userConfig.display.overwritePin != 0) {
+  if (userConfig.display.overwritePin != -1) {
     pinMode(userConfig.display.overwritePin, INPUT);
     pinMode(userConfig.display.overwritePin, INPUT_PULLUP);
   }

src/TaskDisplay.cpp

@@ -25,7 +25,7 @@ bool DisplayTask::setup(System &system) {
 }
 
 bool DisplayTask::loop(System &system) {
-  if (system.getUserConfig()->display.overwritePin != 0 && !digitalRead(system.getUserConfig()->display.overwritePin)) {
+  if (system.getUserConfig()->display.overwritePin != -1 && !digitalRead(system.getUserConfig()->display.overwritePin)) {
     system.getDisplay().activateDistplay();
   }
   system.getDisplay().update();

src/project_configuration.cpp

@@ -69,7 +69,7 @@ void ProjectConfigurationManagement::readProjectConfiguration(JsonDocument &data
 
   conf.display.alwaysOn     = data["display"]["always_on"] | true;
   conf.display.timeout      = data["display"]["timeout"] | 10;
-  conf.display.overwritePin = data["display"]["overwrite_pin"] | 0;
+  conf.display.overwritePin = data["display"]["overwrite_pin"] | -1;
   conf.display.turn180      = data["display"]["turn180"] | true;
 
   conf.ftp.active = data["ftp"]["active"] | false;

variants/heltec_v3/platformio.ini

@@ -2,4 +2,4 @@
 extends = esp32s3_base
 board = heltec_wifi_lora_32_V3
 build_flags = 
-  ${esp32s3_base.build_flags} -DHELTEC_V3 -DUSE_SX1268
+  ${esp32s3_base.build_flags} -DHELTEC_V3 -DUSE_SX1268 -DOLED_SDA=SDA_OLED -DOLED_SCL=SCL_OLED -DRESET_OLED=21