FDRS Update ESP32/ESP8266 nodes via OTA updates

src/fdrs_datatypes.h

@@ -26,6 +26,11 @@ enum crcResult {
   CRC_BAD,
 } returnCRC;
 
+enum FDRSMode {
+  MODE_NORMAL,
+  MODE_UPDATE,
+};
+
 enum cmd_t {
   cmd_clear,
   cmd_ping,

src/fdrs_gateway.h

@@ -88,8 +88,8 @@ void printFDRS(DataReading*, int);
 #ifdef USE_WIFI
   #include "fdrs_gateway_wifi.h"
   #include "fdrs_gateway_mqtt.h"
-#include "fdrs_gateway_ota.h"
 #endif
+#include "fdrs_ota.h"
 
 #ifdef DEBUG_CONFIG
   #include "fdrs_checkConfig.h"

src/fdrs_node.h

@@ -20,6 +20,7 @@ uint8_t incMAC[6];
 DataReading fdrsData[espnow_size];
 DataReading incData[espnow_size];
 TimeSource timeSource;
+FDRSMode fdrsMode = MODE_NORMAL;
 
 uint8_t data_count = 0;
 
@@ -429,6 +430,61 @@ bool reqTimeFDRS() {
 #endif
 }
 
+// goes into Update Mode where new software can be uploaded
+bool updateFDRS() {
+  bool backToSta = false;
+
+  fdrsMode = MODE_UPDATE;
+  DBG("Update Mode.");
+
+  // Finish any async operations
+#ifdef USE_LORA
+  unsigned long timeout = millis() + 1000;
+  while(millis() < timeout && !isLoRaAsyncComplete()) {
+    handleLoRa();
+    handleTime();
+    yield();
+  }
+#endif // USE_LORA
+
+  if(WiFi.getMode() == WIFI_MODE_STA) {
+    WiFi.mode(WIFI_MODE_APSTA);
+    backToSta = true;
+  }
+  else {
+    WiFi.mode(WIFI_MODE_AP);
+  }
+
+  WiFi.softAP("fdrs", "fdrs1234");
+  // print IP address
+  DBG("IP: " + WiFi.softAPIP().toString());
+  // WiFi.softAPConfig();
+  // start OTA listening for x minutes
+  begin_OTA();
+  unsigned long timeout = (1000 * 60 * 5); // 5 minutes
+  DBG("Mode time out in " + String(timeout/1000) + " seconds."); // x seconds remaining
+  timeout += millis();
+  // timeout after x minutes
+  while(millis() < timeout) {
+    handleOTA();
+    handleTime();
+    yield();
+    if((timeout - millis()) % (60 * 1000) == 0) {
+      DBG("Mode time out in " + String((timeout - millis())/1000) + " seconds."); // x seconds remaining
+    }
+
+  }
+  if(backToSta) {
+    WiFi.mode(WIFI_MODE_STA);
+  }
+  else {
+    WiFi.mode(WIFI_MODE_NULL);
+  }
+  fdrsMode = MODE_NORMAL;
+  DBG("Leaving Update Mode.");
+  return false;
+}
+
 // Skeleton Functions related to function calls to files that are not included
 #ifndef USE_LORA
   void sendTimeLoRa() {}