Add SX1268 modules support for linux-native (#3702)

* Add portduino Ebyte E22 XXXM30S/XXXM33S (sx1268) module support

* Add Ebyte E22 XXXM3XS module config

* Update comment for sx1268 module

* Address review comments

---------

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>

bin/config-dist.yaml

@@ -38,6 +38,15 @@ Lora:
 #  Busy: 20
 #  Reset: 18
 
+#  Module: sx1268  # SX1268-based modules, tested with Ebyte E22 400M33S
+#  CS: 21
+#  IRQ: 16
+#  Busy: 20
+#  Reset: 18
+#  TXen: 6
+#  RXen: 12
+#  DIO3_TCXO_VOLTAGE: true
+
 #  DIO3_TCXO_VOLTAGE: true  # the Waveshare Core1262 and others are known to need this setting
 
 #  TXen: x  # TX and RX enable pins

src/main.cpp

@@ -770,6 +770,21 @@ void setup()
                 LOG_INFO("SX1280 Radio init succeeded, using SX1280 radio\n");
             }
         }
+    } else if (settingsMap[use_sx1268]) {
+        if (!rIf) {
+            LOG_DEBUG("Attempting to activate sx1268 radio on SPI port %s\n", settingsStrings[spidev].c_str());
+            LockingArduinoHal *RadioLibHAL = new LockingArduinoHal(*LoraSPI, spiSettings);
+            rIf = new SX1268Interface((LockingArduinoHal *)RadioLibHAL, settingsMap[cs], settingsMap[irq], settingsMap[reset],
+                                      settingsMap[busy]);
+            if (!rIf->init()) {
+                LOG_ERROR("Failed to find SX1268 radio\n");
+                delete rIf;
+                rIf = NULL;
+                exit(EXIT_FAILURE);
+            } else {
+                LOG_INFO("SX1268 Radio init succeeded, using SX1268 radio\n");
+            }
+        }
     }
 
 #elif defined(HW_SPI1_DEVICE)

src/platform/portduino/PortduinoGlue.cpp

@@ -136,6 +136,7 @@ void portduinoSetup()
             settingsMap[use_sx1262] = false;
             settingsMap[use_rf95] = false;
             settingsMap[use_sx1280] = false;
+            settingsMap[use_sx1268] = false;
 
             if (yamlConfig["Lora"]["Module"] && yamlConfig["Lora"]["Module"].as<std::string>("") == "sx1262") {
                 settingsMap[use_sx1262] = true;
@@ -143,6 +144,8 @@ void portduinoSetup()
                 settingsMap[use_rf95] = true;
             } else if (yamlConfig["Lora"]["Module"] && yamlConfig["Lora"]["Module"].as<std::string>("") == "sx1280") {
                 settingsMap[use_sx1280] = true;
+            } else if (yamlConfig["Lora"]["Module"] && yamlConfig["Lora"]["Module"].as<std::string>("") == "sx1268") {
+                settingsMap[use_sx1268] = true;
             }
             settingsMap[dio2_as_rf_switch] = yamlConfig["Lora"]["DIO2_AS_RF_SWITCH"].as<bool>(false);
             settingsMap[dio3_tcxo_voltage] = yamlConfig["Lora"]["DIO3_TCXO_VOLTAGE"].as<bool>(false);

src/platform/portduino/PortduinoGlue.h

@@ -13,6 +13,7 @@ enum configNames {
     dio3_tcxo_voltage,
     use_rf95,
     use_sx1280,
+    use_sx1268,
     user,
     gpiochip,
     spidev,