make OTA selectable

src/main.cpp

@@ -143,12 +143,15 @@ void setup() {
   batt_voltage = read_voltage();
 #endif
 
+#ifdef USE_OTA
+  strcat_P(features, " OTA");
   // reboot to firmware update mode if ota trigger switch is set
   if (cfg.runmode == 1) {
     cfg.runmode = 0;
     saveConfig();
     start_ota_update();
   }
+#endif
 
   // initialize button
 #ifdef HAS_BUTTON

src/ota.cpp

@@ -1,3 +1,5 @@
+#ifdef USE_OTA
+
 /*
  Parts of this code:
  Copyright (c) 2014-present PlatformIO <contact@platformio.org>
@@ -17,7 +19,6 @@
 
 #include "ota.h"
 
-#include <string>
 using namespace std;
 
 const BintrayClient bintray(BINTRAY_USER, BINTRAY_REPO, BINTRAY_PACKAGE);
@@ -250,10 +251,10 @@ void do_ota_update() {
     size_t written, current, size;
 
     if (Update.begin(contentLength)) {
-
+#ifdef HAS_DISPLAY
       // register callback function for showing progress while streaming data
       Update.onProgress(&show_progress);
-
+#endif
       int i = FLASH_MAX_TRY;
       while ((i--) && (written != contentLength)) {
 
@@ -311,7 +312,7 @@ void do_ota_update() {
   client.stop();
 } // do_ota_update
 
-void display(const uint8_t row, std::string status, std::string msg) {
+void display(const uint8_t row, const std::string status, const std::string msg) {
 #ifdef HAS_DISPLAY
   u8x8.setCursor(14, row);
   u8x8.print((status.substr(0, 2)).c_str());
@@ -320,7 +321,6 @@ void display(const uint8_t row, std::string status, std::string msg) {
     u8x8.setCursor(0, 7);
     u8x8.print(msg.substr(0, 16).c_str());
   }
-#endif
 }
 
 // callback function to show download progress while streaming data
@@ -328,6 +328,7 @@ void show_progress(size_t current, size_t size) {
   char buf[17];
   snprintf(buf, 17, "%-9lu (%3lu%%)", current, current * 100 / size);
   display(4, "**", buf);
+#endif
 }
 
 // helper function to compare two versions. Returns 1 if v2 is
@@ -364,3 +365,4 @@ int version_compare(const String v1, const String v2) {
   }
   return 0;
 }
+#endif // USE_OTA

src/ota.h

@@ -1,6 +1,8 @@
 #ifndef OTA_H
 #define OTA_H
 
+#ifdef USE_OTA
+
 #include "globals.h"
 #include "update.h"
 #include <WiFi.h>
@@ -12,6 +14,8 @@ void do_ota_update();
 void start_ota_update();
 int version_compare(const String v1, const String v2);
 void show_progress(size_t current, size_t size);
-void display(const uint8_t row, std::string status, std::string msg);
+void display(const uint8_t row, const std::string status, const std::string msg);
+
+#endif // USE_OTA
 
 #endif // OTA_H

src/paxcounter.conf

@@ -66,6 +66,7 @@
 #define HOMECYCLE                       30      // house keeping cycle in seconds [default = 30 secs]
 
 // OTA settings
+#define USE_OTA                         1       // Comment out to disable OTA update
 #define WIFI_MAX_TRY                    20      // maximum number of wifi connect attempts for OTA update [default = 20]
 #define FLASH_MAX_TRY                   3       // maximum number of attempts for writing update binary to flash [default = 3]
 #define OTA_MIN_BATT                    3700    // minimum battery level vor OTA [millivolt]

src/rcommand.cpp

@@ -18,7 +18,7 @@ void set_reset(uint8_t val[]) {
   case 1: // reset MAC counter
     ESP_LOGI(TAG, "Remote command: reset MAC counter");
     reset_counters(); // clear macs
-    get_salt();     // get new salt
+    get_salt();       // get new salt
     sprintf(display_line6, "Reset counter");
     break;
   case 2: // reset device to factory settings
@@ -33,9 +33,14 @@ void set_reset(uint8_t val[]) {
     break;
   case 9: // reset and ask for software update via Wifi OTA
     ESP_LOGI(TAG, "Remote command: software update via Wifi");
+#ifdef USE_OTA
     sprintf(display_line6, "Software update");
     cfg.runmode = 1;
+#else
+    sprintf(display_line6, "Software update not implemented");
+#endif // USE_OTA
     break;
+
   default:
     ESP_LOGW(TAG, "Remote command: reset called with invalid parameter(s)");
   }