cargo: fix BMS reconnect backoff helper order

firmware/esp32/overland-controller/bms.cpp

@@ -290,7 +290,34 @@ int scanBleDevices(uint32_t scanSeconds) {
     return bleScanResultCount;
 }
 
-static bool connectBms() {
+static static void scheduleBmsReconnectBackoff();
+static void clearBmsReconnectBackoff();
+
+static void scheduleBmsReconnectBackoff() {
+    bmsConnectFailCount++;
+
+    if (bmsConnectBackoffMs == 0) {
+        bmsConnectBackoffMs = BMS_CONNECT_BACKOFF_INITIAL_MS;
+    } else {
+        bmsConnectBackoffMs = min(bmsConnectBackoffMs * 2, BMS_CONNECT_BACKOFF_MAX_MS);
+    }
+
+    bmsReconnectPausedUntil = millis() + bmsConnectBackoffMs;
+
+    Serial.print("BMS: reconnect backoff ");
+    Serial.print(bmsConnectBackoffMs / 1000);
+    Serial.print("s after ");
+    Serial.print(bmsConnectFailCount);
+    Serial.println(" failed attempt(s)");
+}
+
+static void clearBmsReconnectBackoff() {
+    bmsConnectFailCount = 0;
+    bmsConnectBackoffMs = 0;
+    bmsReconnectPausedUntil = 0;
+}
+
+bool connectBms() {
     if (client && client->isConnected()) {
         bmsData.connected = true;
         return true;

firmware/esp32/overland-controller/system_status.h

@@ -1,4 +1,4 @@
 #pragma once
 
-#define FIRMWARE_VERSION "0.5.2-bms-missing-backoff"
+#define FIRMWARE_VERSION "0.5.3-bms-backoff-compile-fix"
 #define FIRMWARE_NAME "overland-controller"