fix bug with big difference

MiniBeieliNodeSketch/MiniBeieliNodeSketch.ino

@@ -12,7 +12,7 @@ BME280 bme280;
 /******************************************************************************/
 /* Firmware Version                                                           */
 /******************************************************************************/
-static const int32_t fwVersion = 20210423;
+static const int32_t fwVersion = 20210427;
 
 /******************************************************************************/
 /* LoraWAN Settings                                                           */
@@ -850,12 +850,14 @@ void AddSensorDataToLoraData()
     timer_pos0 = millis();
   }
   my_position++;
-
-  last_sensor_reading = sensor_data;
 }
 
 bool TooBigWeightChange()
 {
+  // on first position there cannot be a difference 
+  if (my_position == 1) {
+     return false;
+  }
   bool big_difference = (abs(last_sensor_reading.weight - sensor_data.weight) > SEND_DIFF_THRESHOLD_5GRAMS);
   if (big_difference) {
     lora_data.weight_last = sensor_data.weight;
@@ -907,7 +909,8 @@ bool ReadSensors(bool read_only)
   if (!read_only) {
     AddSensorDataToLoraData();
     send_data = (TooBigWeightChange()) || (my_position >= MAX_VALUES_TO_SEND) || (iteration <= INIT_PACKETS) || (iteration % INIT_PACKAGE_INTERVAL == 0);
-
+    last_sensor_reading = sensor_data;
+ 
     if (config_data.debug_level > 0) {
       if (send_data) {
         Serial.printf("Iteration: %d, we send the data...\n", iteration);
@@ -991,4 +994,4 @@ void loop()
         break;
       }
   }
-}
+}

README.md

@@ -22,11 +22,13 @@ Das sind die verwendeten Libraries [1]:
 
 | URL | Branch | Commit | Commit Date |
 | --- | ------ | -----  | ----------- |
-| https://github.com/HelTecAutomation/CubeCell-Arduino.git  | 68b01ab | Fri, 16 Apr 2021 17:59:03 +0800  |
+| https://github.com/HelTecAutomation/CubeCell-Arduino.git  | 58ed094 | Mon, 26 Apr 2021 09:48:49 +0800  |
 | https://github.com/sparkfun/SparkFun_Qwiic_Scale_NAU7802_Arduino_Library.git  | master | 688f255 | Fri, 3 Jan 2020 12:35:22 -0700  |
 | https://github.com/sparkfun/SparkFun_BME280_Arduino_Library.git  | master | 0b5eabf | Wed, 30 Dec 2020 20:44:27 -0700  |
 
+`
 [1]: echo "| $(git remote -v |grep fetch |awk '{print $2}' |tr '\n' ' ') | $(git log --pretty=format:'%h | %cD ' -n 1) |"
+`
 
 ## Wir verwenden arduino-cli
 
@@ -46,9 +48,24 @@ $ arduino-cli core install CubeCell:CubeCell
 $ arduino-cli core list
 
 Compile:
-$ arduino-cli compile --fqbn CubeCell:CubeCell:CubeCell-Board MiniBeieliNodeSketch
+$ arduino-cli compile --fqbn CubeCell:CubeCell:CubeCell-Board \
+                      --build-property "build.band=REGION_EU868" \
+                      --build-property "build.LORAWAN_CLASS=CLASS_A" \
+                      --build-property "build.LORAWAN_CLASS=CLASS_A" \
+                      --build-property "build.LORAWAN_DEVEUI_AUTO=0" \
+                      --build-property "build.LORAWAN_NETMODE=true" \
+                      --build-property "build.LORAWAN_ADR=true" \
+                      --build-property "build.LORAWAN_UPLINKMODE=false" \
+                      --build-property "build.LORAWAN_Net_Reserve=false" \
+                      --build-property "build.LORAWAN_AT_SUPPORT=1" \
+                      --build-property "build.RGB=0" \
+                      --build-property "build.LORAWAN_DebugLevel=0" \
+                      MiniBeieliNodeSketch
+
+Output ist in /tmp/arduino-sketch-XXXXXXXXXXXXXXXXXXXXXXXXX und kann kopiert werden:
+$ mkdir ~/arduino-builds-saved/20210423/
+$ cp /tmp/arduino-sketch-0870BAA82DFEB3C4E076C8FBBDEB25B4/CubeCell_Board_REGION_EU868_RGB_0.cyacd ~/arduino-builds-saved/20210423/
 
 Upload:
-$ arduino-cli board list
-$ arduino-cli upload -p /dev/ttyUSB0 --fqbn CubeCell:CubeCell:CubeCell-Board MiniBeieliNodeSketch
+/home/joerg/Arduino/hardware/CubeCell/CubeCell/tools/CubeCellflash/CubeCellflash -serial /dev/ttyUSB0 /home/joerg/arduino-builds-saved/latest/CubeCell_Board_REGION_EU868_RGB_0.cyacd
 `

mini-beieli-provision-cubecell.go

@@ -58,6 +58,51 @@ func readSerial(p *serial.Port) {
 	}
 }
 
+func getAppKey(deveui string) string {
+	if len(deveui) == 16 {
+		appkey := fmt.Sprintf("%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c",
+			deveui[10],
+			deveui[3],
+			deveui[4],
+			deveui[7],
+			deveui[15],
+			deveui[9],
+			deveui[11],
+			deveui[2],
+			deveui[0],
+			deveui[8],
+			deveui[1],
+			deveui[6],
+			deveui[5],
+			deveui[12],
+			deveui[14],
+			deveui[13],
+			deveui[3],
+			deveui[6],
+			deveui[12],
+			deveui[7],
+			deveui[15],
+			deveui[1],
+			deveui[9],
+			deveui[11],
+			deveui[2],
+			deveui[10],
+			deveui[0],
+			deveui[8],
+			deveui[5],
+			deveui[14],
+			deveui[4],
+			deveui[13])
+
+		fmt.Printf("calculated AppKey: %s\n", appkey)
+		return appkey
+
+	} else {
+		fmt.Printf("devEui has wrong length: %s\n", deveui)
+		return ""
+	}
+}
+
 func main() {
 	if len(os.Args) != 3 {
 		fmt.Println("usage: " + filepath.Base(os.Args[0]) + " <SerialDevice> <appEui>")
@@ -75,10 +120,11 @@ func main() {
 
 	sendCommand(s, "AT+XXX")
 	devEui := getDevEui(s)
+	appKey := getAppKey(devEui)
 	if devEui != "" {
 		sendCommand(s, "AT+DevEui="+devEui)
 		sendCommand(s, "AT+AppEui="+appEui)
-		sendCommand(s, "AT+AppKey="+devEui+devEui)
+		sendCommand(s, "AT+AppKey="+appKey)
 		sendCommand(s, "AT+SAVE_OTAA_CONFIG=1")
 		sendCommand(s, "AT+RESET=1")
 		readSerial(s)