maintenance mode (experimental)

include/boot.h

@@ -0,0 +1,17 @@
+#ifndef BOOT_H
+#define BOOT_H
+
+#include "globals.h"
+#include "hash.h"
+
+#include <Update.h>
+#include <WiFi.h>
+#include <WiFiClientSecure.h>
+#include <WiFiClient.h>
+#include <WebServer.h>
+#include <ESPmDNS.h>
+
+void IRAM_ATTR exit_boot_menu(void);
+void start_boot_menu(void);
+
+#endif // BOOT_H

include/hash.h

@@ -4,6 +4,6 @@
 #include <Arduino.h>
 #include <RokkitHash.h>
 
-uint32_t IRAM_ATTR hash(const char *data, int len);
+uint32_t IRAM_ATTR myhash(const char *data, int len);
 
 #endif

include/main.h

@@ -20,5 +20,6 @@
 #include "lorawan.h"
 #include "timekeeper.h"
 #include "corona.h"
+#include "boot.h"
 
 #endif

include/mqttclient.h

@@ -3,6 +3,7 @@
 
 #include "globals.h"
 #include "rcommand.h"
+#include "hash.h"
 #include <MQTT.h>
 #include <ETH.h>
 #include <mbedtls/base64.h>

include/ota.h

@@ -13,13 +13,8 @@
 #include <WiFiClientSecure.h>
 #include <BintrayClient.h>
 
-#include <WiFiClient.h>
-#include <WebServer.h>
-#include <ESPmDNS.h>
-
 int do_ota_update();
 void start_ota_update();
-void start_maintenance();
 void ota_display(const uint8_t row, const std::string status,
                  const std::string msg);
 void show_progress(unsigned long current, unsigned long size);

src/boot.cpp

@@ -0,0 +1,145 @@
+#include "boot.h"
+#include "reset.h"
+
+// Local logging tag
+static const char TAG[] = __FILE__;
+
+void IRAM_ATTR exit_boot_menu() {
+  RTC_runmode = RUNMODE_NORMAL;
+  esp_restart();
+}
+
+// start local web server with user interface for maintenance mode
+// used for manually uploading a firmware file via wifi
+
+void start_boot_menu(void) {
+
+  uint8_t mac[6];
+  char clientId[20];
+
+  // hash 6 byte MAC to 4 byte hash
+  esp_eth_get_mac(mac);
+  const uint32_t hashedmac = myhash((const char *)mac, 6);
+  snprintf(clientId, 20, "paxcounter_%08x", hashedmac);
+
+  const char *host = clientId;
+  const char *ssid = WIFI_SSID;
+  const char *password = WIFI_PASS;
+
+  hw_timer_t *timer = NULL;
+  timer = timerBegin(2, 80, true); // timer 2, div 80, countup
+  timerAttachInterrupt(timer, &exit_boot_menu, true); // attach callback
+  timerAlarmWrite(timer, BOOTDELAY * 1000000, false); // set time in us
+  timerAlarmEnable(timer);                            // enable interrupt
+
+  WebServer server(80);
+
+  /*
+    const char *serverIndex =
+        "<form method='POST' action='/update' "
+        "enctype='multipart/form-data'><input type='file' name='update'><input "
+        "type='submit' value='Update'></form>";
+  */
+
+  const char *serverIndex =
+      "<script "
+      "src='https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/"
+      "jquery.min.js'></script>"
+      "<form method='POST' action='#' enctype='multipart/form-data' "
+      "id='upload_form'>"
+      "<input type='file' name='update'>"
+      "<input type='submit' value='Update'>"
+      "</form>"
+      "<div id='prg'>progress: 0%</div>"
+      "<script>"
+      "$('form').submit(function(e){"
+      "e.preventDefault();"
+      "var form = $('#upload_form')[0];"
+      "var data = new FormData(form);"
+      " $.ajax({"
+      "url: '/update',"
+      "type: 'POST',"
+      "data: data,"
+      "contentType: false,"
+      "processData:false,"
+      "xhr: function() {"
+      "var xhr = new window.XMLHttpRequest();"
+      "xhr.upload.addEventListener('progress', function(evt) {"
+      "if (evt.lengthComputable) {"
+      "var per = evt.loaded / evt.total;"
+      "$('#prg').html('progress: ' + Math.round(per*100) + '%');"
+      "}"
+      "}, false);"
+      "return xhr;"
+      "},"
+      "success:function(d, s) {"
+      "console.log('success!')"
+      "},"
+      "error: function (a, b, c) {"
+      "}"
+      "});"
+      "});"
+      "</script>";
+
+  // Connect to WiFi network
+  // WiFi.mode(WIFI_STA);
+  WiFi.begin(ssid, password);
+
+  // Wait for connection
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+  }
+
+  MDNS.begin(host);
+
+  server.on("/", HTTP_GET, [&server, &serverIndex]() {
+    server.sendHeader("Connection", "close");
+    server.send(200, "text/html", serverIndex);
+  });
+
+  // handling uploading firmware file
+  server.on(
+      "/update", HTTP_POST,
+      [&server]() {
+        server.sendHeader("Connection", "close");
+        server.send(200, "text/plain", (Update.hasError()) ? "FAIL" : "OK");
+      },
+      [&server, &timer]() {
+        HTTPUpload &upload = server.upload();
+        if (upload.status == UPLOAD_FILE_START) {
+          timerAlarmWrite(timer, BOOTTIMEOUT * 1000000, false);
+          ESP_LOGI(TAG, "Update: %s\n", upload.filename.c_str());
+          if (!Update.begin(
+                  UPDATE_SIZE_UNKNOWN)) { // start with max available size
+            ESP_LOGE(TAG, "Error: %s", Update.errorString());
+          }
+        } else if (upload.status == UPLOAD_FILE_WRITE) {
+          // flashing firmware to ESP
+          if (Update.write(upload.buf, upload.currentSize) !=
+              upload.currentSize) {
+            ESP_LOGE(TAG, "Error: %s", Update.errorString());
+          }
+        } else if (upload.status == UPLOAD_FILE_END) {
+          if (Update.end(
+                  true)) { // true to set the size to the current progress
+            ESP_LOGI(TAG, "Update finished, %u bytes written",
+                     upload.totalSize);
+            WiFi.disconnect(true, true);
+            do_reset(false); // coldstart
+          } else {
+            ESP_LOGE(TAG, "Update failed");
+          }
+        }
+      });
+
+  server.begin();
+  MDNS.addService("http", "tcp", 80);
+  ESP_LOGI(TAG, "WiFi connected to '%s', open http://%s in your browser",
+           WiFi.SSID().c_str(), WiFi.localIP().toString().c_str());
+
+  while (1) {
+    server.handleClient();
+    timerWrite(timer, 0); // reset timer (feed watchdog)
+    delay(1);
+  }
+}

src/cyclic.cpp

@@ -20,7 +20,7 @@ void doHousekeeping() {
 
   // check if update or maintenance mode trigger switch was set by rcommand
   if ((RTC_runmode == RUNMODE_UPDATE) || (RTC_runmode == RUNMODE_MAINTENANCE))
-    do_reset(true);
+    do_reset(true); // warmstart
 
   // heap and task storage debugging
   ESP_LOGD(TAG, "Heap: Free:%d, Min:%d, Size:%d, Alloc:%d, StackHWM:%d",

src/hash.cpp

@@ -40,6 +40,6 @@
 #undef ROKKIT_ENABLE_8BIT_OPTIMIZATIONS
 #endif
 
-uint32_t IRAM_ATTR hash(const char *data, int len) {
+uint32_t IRAM_ATTR myhash(const char *data, int len) {
   return rokkit(data, len);
 }

src/macsniff.cpp

@@ -141,7 +141,7 @@ uint16_t mac_analyze(MacBuffer_t MacBuffer) {
   // hashed 4 byte MAC
   // to save RAM, we use only lower 2 bytes of hash, since collisions don't
   // matter in our use case
-  hashedmac = hash((const char *)&saltedmac, 4);
+  hashedmac = myhash((const char *)&saltedmac, 4);
 
   auto newmac = macs.insert(hashedmac); // add hashed MAC, if new unique
   bool added =

src/main.cpp

@@ -51,6 +51,7 @@ So don't do it if you do not own a digital oscilloscope.
 -------------------------------------------------------------------------------
 0	displayIRQ -> display refresh -> 40ms (DISPLAYREFRESH_MS)
 1 ppsIRQ -> pps clock irq -> 1sec
+2 watchdog -> used in boot.cpp
 3	MatrixDisplayIRQ -> matrix mux cycle -> 0,5ms (MATRIX_DISPLAY_SCAN_US)
 
 
@@ -290,9 +291,16 @@ void setup() {
     start_ota_update();
 #endif
 
-  // start local webserver if maintenance trigger switch is set
+#if (BOOTMENU)
+  // start local webserver after device powers up or on rcommand request
+  if ((RTC_runmode == RUNMODE_POWERCYCLE) ||
+      (RTC_runmode == RUNMODE_MAINTENANCE))
+    start_boot_menu();
+#else
+  // start local webserver on rcommand request only
   if (RTC_runmode == RUNMODE_MAINTENANCE)
-    start_maintenance();
+    start_boot_menu();
+#endif
 
   // start mac processing task
   ESP_LOGI(TAG, "Starting MAC processor...");

src/mqttclient.cpp

@@ -48,7 +48,7 @@ int mqtt_connect(const char *my_host, const uint16_t my_port) {
 
   // hash 6 byte MAC to 4 byte hash
   esp_eth_get_mac(mac);
-  const uint32_t hashedmac = hash((const char *)mac, 6);
+  const uint32_t hashedmac = myhash((const char *)mac, 6);
   snprintf(clientId, 20, "paxcounter_%08x", hashedmac);
 
   ESP_LOGI(TAG, "MQTT name is %s", MQTT_CLIENTNAME);

src/ota.cpp

@@ -330,125 +330,4 @@ void show_progress(unsigned long current, unsigned long size) {
 #endif
 }
 
-// start local web server with user interface for maintenance mode
-// used for manually uploading a firmware file via wifi
-
-void start_maintenance(void) {
-
-  // code snippets taken from
-  // github.com/espressif/arduino-esp32/blob/master/libraries/ArduinoOTA/examples/OTAWebUpdater/OTAWebUpdater.ino
-
-  const char *host = "paxcounter";
-  const char *ssid = WIFI_SSID;
-  const char *password = WIFI_PASS;
-
-  WebServer server(80);
-
-  const char *serverIndex =
-      "<script "
-      "src='https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/"
-      "jquery.min.js'></script>"
-      "<form method='POST' action='#' enctype='multipart/form-data' "
-      "id='upload_form'>"
-      "<input type='file' name='update'>"
-      "<input type='submit' value='Update'>"
-      "</form>"
-      "<div id='prg'>progress: 0%</div>"
-      "<script>"
-      "$('form').submit(function(e){"
-      "e.preventDefault();"
-      "var form = $('#upload_form')[0];"
-      "var data = new FormData(form);"
-      " $.ajax({"
-      "url: '/update',"
-      "type: 'POST',"
-      "data: data,"
-      "contentType: false,"
-      "processData:false,"
-      "xhr: function() {"
-      "var xhr = new window.XMLHttpRequest();"
-      "xhr.upload.addEventListener('progress', function(evt) {"
-      "if (evt.lengthComputable) {"
-      "var per = evt.loaded / evt.total;"
-      "$('#prg').html('progress: ' + Math.round(per*100) + '%');"
-      "}"
-      "}, false);"
-      "return xhr;"
-      "},"
-      "success:function(d, s) {"
-      "console.log('success!')"
-      "},"
-      "error: function (a, b, c) {"
-      "}"
-      "});"
-      "});"
-      "</script>";
-
-  // Connect to WiFi network
-  WiFi.begin(ssid, password);
-
-  // Wait for connection
-  while (WiFi.status() != WL_CONNECTED)
-    delay(500);
-
-  ESP_LOGI(TAG, "Connected to %s", ssid);
-  ESP_LOGI(TAG, "Open http://%s.local in your browser", host);
-
-  // use mdns for host name resolution
-  if (!MDNS.begin(host)) {
-    ESP_LOGI(TAG, "Error setting up mDNS responder!");
-    delay(3000);
-    do_reset(false);
-  }
-
-  server.on("/", HTTP_GET, [&server, &serverIndex]() {
-    server.sendHeader("Connection", "close");
-    server.send(200, "text/html", serverIndex);
-  });
-
-  // handling uploading firmware file
-  server.on(
-      "/update", HTTP_POST,
-      [&server]() {
-        server.sendHeader("Connection", "close");
-        server.send(200, "text/plain", (Update.hasError()) ? "FAIL" : "OK");
-        do_reset(false);
-      },
-      [&server]() {
-        HTTPUpload &upload = server.upload();
-        if (upload.status == UPLOAD_FILE_START) {
-          ESP_LOGI(TAG, "Update: %s\n", upload.filename.c_str());
-          if (!Update.begin(
-                  UPDATE_SIZE_UNKNOWN)) { // start with max available size
-            ESP_LOGE(TAG, "Error: %s", Update.errorString());
-          }
-        } else if (upload.status == UPLOAD_FILE_WRITE) {
-          // flashing firmware to ESP
-          if (Update.write(upload.buf, upload.currentSize) !=
-              upload.currentSize) {
-            ESP_LOGE(TAG, "Error: %s", Update.errorString());
-          }
-        } else if (upload.status == UPLOAD_FILE_END) {
-          if (Update.end(
-                  true)) { // true to set the size to the current progress
-            ESP_LOGI(TAG, "Update finished, %u bytes written",
-                     upload.totalSize);
-
-          } else {
-            ESP_LOGE(TAG, "Update failed");
-          }
-          delay(3000);
-          do_reset(false);
-        }
-      });
-
-  server.begin();
-  MDNS.addService("http", "tcp", 80);
-
-  while (1) {
-    server.handleClient();
-    delay(1);
-  }
-}
-
 #endif // USE_OTA

src/rcommand.cpp

@@ -32,11 +32,11 @@ void set_reset(uint8_t val[]) {
     do_reset(true);
     break;
   case 8: // reset and start local web server for manual software update
-    ESP_LOGI(TAG, "Remote command: software update via user interface");
+    ESP_LOGI(TAG, "Remote command: reboot to maintenance mode");
     RTC_runmode = RUNMODE_MAINTENANCE;
     break;
   case 9: // reset and ask OTA server via Wifi for automated software update
-    ESP_LOGI(TAG, "Remote command: software update via Wifi");
+    ESP_LOGI(TAG, "Remote command: reboot to ota update mode");
 #if (USE_OTA)
     // check power status before scheduling ota update
     if (batt_sufficient())

src/reset.cpp

@@ -14,7 +14,8 @@ RTC_DATA_ATTR struct timeval RTC_sleep_start_time;
 RTC_DATA_ATTR unsigned long long RTC_millis = 0;
 timeval sleep_stop_time;
 
-const char *runmode[6] = {"powercycle", "normal", "wakeup", "update", "sleep", "maintenance"};
+const char *runmode[6] = {"powercycle", "normal", "wakeup",
+                          "update",     "sleep",  "maintenance"};
 
 void do_reset(bool warmstart) {
   if (warmstart) {
@@ -45,7 +46,8 @@ void do_after_reset(void) {
     break;
 
   case SW_CPU_RESET: // 0x0c Software reset CPU
-                     // keep previous runmode (could be RUNMODE_UPDATE)
+                     // keep previous runmode
+                     // (i.e. RUNMODE_UPDATE or RUNMODE_MAINTENANCE)
     break;
 
   case DEEPSLEEP_RESET: // 0x05 Deep Sleep reset digital core