new version for V2 Boards: 20250726

.gitignore

@@ -1 +1,5 @@
 mini-beieli-provision-cubecell
+appkey
+calibrate
+MiniBeieliNodeSketch/build
+cyacd

MiniBeieliNodeSketch/MiniBeieliNodeSketch.ino

@@ -12,7 +12,7 @@ BME280 bme280;
 /******************************************************************************/
 /* Firmware Version                                                           */
 /******************************************************************************/
-static const int32_t fwVersion = 20210423;
+static const int32_t fwVersion = 20250726;
 
 /******************************************************************************/
 /* LoraWAN Settings                                                           */
@@ -225,6 +225,8 @@ bool stop_iterations = false;
 bool start_new_iteration = false;
 bool next_package_is_init_package = true;
 uint32_t gRebootMs;
+char last_channel = 'X';
+bool toobigweightchange = false;
 
 /******************************************************************************/
 /* Functions for Global Data Structures                                       */
@@ -404,6 +406,9 @@ bool InitializeScales()
   result &= nau7802.setSampleRate(NAU7802_SPS_40); //Set samples per second to 40
   result &= nau7802.setRegister(NAU7802_ADC, 0x30); //Turn off CLK_CHP. From 9.1 power on sequencing.
 
+  // see https://github.com/sparkfun/SparkFun_Qwiic_Scale_NAU7802_Arduino_Library/issues/7
+  //result &= nau7802.clearBit(NAU7802_PGA_PWR_PGA_CAP_EN, NAU7802_PGA_PWR);
+
   return result;
 }
 
@@ -446,14 +451,22 @@ long ReadScale(char channel)
     channelNumber = NAU7802_CHANNEL_2;
   }
   unsigned long startTime = millis();
-  nau7802.setChannel(channelNumber);
-  bool calibrate_success = nau7802.calibrateAFE();
-  if (! calibrate_success) {
+  if (channel != last_channel) {
+    last_channel = channel;
+    nau7802.setChannel(channelNumber);
+    bool calibrate_success = nau7802.calibrateAFE();
+    if (! calibrate_success) {
+      if (config_data.debug_level > 0) {
+        Serial.printf("Error: Calibration not successful!\n");
+      }
+    }
     if (config_data.debug_level > 0) {
-      Serial.printf("Error: Calibration not successful!\n");
+        Serial.printf("getChannel1Gain: %d\n", nau7802.getChannel1Gain());
+        Serial.printf("getChannel1Offset: %d\n", nau7802.getChannel1Offset());
+        Serial.printf("NAU7802_GCAL2_B3: %d\n", nau7802.get32BitRegister(NAU7802_GCAL2_B3));
+        Serial.printf("NAU7802_OCAL2_B2: %d\n", nau7802.get32BitRegister(NAU7802_OCAL2_B2));
     }
   }
-
   if (nau7802.available()) {
     long dummy = nau7802.getReading();
   }
@@ -680,7 +693,7 @@ bool checkUserAt(char *cmd, char *content)
       Serial.printf("  \"temperature\": \"%d\",\n", sensor_data.temperature);
       Serial.printf("  \"humidity\": \"%d\",\n", sensor_data.humidity);
       Serial.printf("  \"pressure\": \"%d\",\n", sensor_data.pressure);
-      Serial.printf("  \"vbat\": \"%d\",\n", sensor_data.vbat);
+      Serial.printf("  \"vbat\": \"%d\"\n", sensor_data.vbat);
       Serial.printf("}\n");
     }
     return true;
@@ -850,12 +863,14 @@ 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;
@@ -865,6 +880,7 @@ bool TooBigWeightChange()
     Serial.printf("TooBigWeightChange (my_position: %d): %d...\n", my_position, big_difference);
   }
 
+  toobigweightchange = big_difference;
   return big_difference;
 }
 
@@ -907,7 +923,8 @@ 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);
@@ -964,6 +981,8 @@ void loop()
     case DEVICE_STATE_SEND:
       {
         if (ReadSensors(false)) {
+          // we send confirmed packages when weight change is too big or for every init package
+          isTxConfirmed = (toobigweightchange) || (iteration <= INIT_PACKETS) || (iteration % INIT_PACKAGE_INTERVAL == 0);
           prepareTxFrame(appPort);
           LoRaWAN.send();
           package_counter++;
@@ -991,4 +1010,4 @@ void loop()
         break;
       }
   }
-}
+}

README.md

@@ -22,33 +22,75 @@ 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/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  |
+| https://github.com/HelTecAutomation/ASR650x-Arduino.git  | d9402fe | Tue, 8 Jul 2025 09:52:16 +0800  |
+| https://github.com/sparkfun/SparkFun_Qwiic_Scale_NAU7802_Arduino_Library.git  | e6b91f8 | Mon, 26 Feb 2024 09:55:18 +0000  |
+| https://github.com/sparkfun/SparkFun_BME280_Arduino_Library.git  | c42e780 | Tue, 19 Sep 2023 14:53:45 -0600  |
 
+`
 [1]: echo "| $(git remote -v |grep fetch |awk '{print $2}' |tr '\n' ' ') | $(git log --pretty=format:'%h | %cD ' -n 1) |"
+`
 
 ## Wir verwenden arduino-cli
 
 Installation:
 `
-$ curl -fsSL https://raw.githubusercontent.com/arduino/arduino-cli/master/install.sh | BINDIR=~/bin sh
+$ brew install arduino-cli
 $ arduino-cli version
-arduino-cli alpha Version: 0.18.1 Commit: b3cf8e19 Date: 2021-04-13T13:08:30Z
+arduino-cli  Version: 1.2.2 Commit: Homebrew Datum: 2025-04-22T13:49:40Z
 
 $ arduino-cli sketch new MiniBeieliNodeSketch
 
-$ arduino-cli core update-index
+Install Board aus Git
 
-$ arduino-cli board listall
+mkdir -p ~/Documents/Arduino/hardware/CubeCell
+cd ~/Documents/Arduino/hardware/CubeCell
+git clone https://github.com/HelTecAutomation/ASR650x-Arduino.git CubeCell
+cd CubeCell/tools
+python get.py
 
-$ arduino-cli core install CubeCell:CubeCell
-$ arduino-cli core list
+Install Libraries (from Git...):
+
+$ cd ~/Documents/Arduino/libraries
+$ git clone https://github.com/sparkfun/SparkFun_Qwiic_Scale_NAU7802_Arduino_Library.git
+$ git clone https://github.com/sparkfun/SparkFun_BME280_Arduino_Library.git
+
+Set FQBN (show possible boards with 'arduino-cli board listall', without '-V2' for old CubeCell):
+$ FQBN="CubeCell:CubeCell:CubeCell-Board-V2:LORAWAN_REGION=6,LORAWAN_CLASS=0,LORAWAN_DEVEUI=0,LORAWAN_NETMODE=0,LORAWAN_ADR=0,LORAWAN_UPLINKMODE=1,LORAWAN_Net_Reserve=0,LORAWAN_AT_SUPPORT=0,LORAWAN_RGB=0,LORAWAN_DebugLevel=0"
 
 Compile:
-$ arduino-cli compile --fqbn CubeCell:CubeCell:CubeCell-Board MiniBeieliNodeSketch
+$ arduino-cli compile --export-binaries --clean --fqbn ${FQBN} MiniBeieliNodeSketch
+
+=== Beispiel ===
+joerg@mbp mini-beieli-node-cubecell % arduino-cli compile --export-binaries --clean --fqbn ${FQBN} MiniBeieliNodeSketch
+Der Sketch verwendet 114188 Bytes (87%) des Programmspeicherplatzes. Das Maximum sind 131072 Bytes.
+
+Benutzte Bibliothek                          Version Pfad
+LoRa                                         1.0     /Users/joerg/Documents/Arduino/hardware/CubeCell/CubeCell/libraries/LoRa
+LoraMac_102                                  1.0.2   /Users/joerg/Documents/Arduino/hardware/CubeCell/CubeCell/libraries/LoraWan102
+SparkFun BME280                              2.0.10  /Users/joerg/Documents/Arduino/libraries/SparkFun_BME280_Arduino_Library
+SparkFun Qwiic Scale NAU7802 Arduino Library 1.0.5   /Users/joerg/Documents/Arduino/libraries/SparkFun_Qwiic_Scale_NAU7802_Arduino_Library
+
+Verwendete Plattform Version Pfad
+CubeCell:CubeCell    1.0.0   /Users/joerg/Documents/Arduino/hardware/CubeCell/CubeCell
+=============
 
 Upload:
-$ arduino-cli board list
-$ arduino-cli upload -p /dev/ttyUSB0 --fqbn CubeCell:CubeCell:CubeCell-Board MiniBeieliNodeSketch
+$ arduino-cli upload --verbose --fqbn ${FQBN} -p /dev/tty.usbserial-0001 MiniBeieliNodeSketch
+
+*.cyacd-File kann kopiert werden nach cyacd-Directory:
+Beispiel:
+
+joerg@z240 mini-beieli-node-cubecell % arduino-cli upload --verbose --fqbn ${FQBN} -p /dev/tty.usbserial-0001 MiniBeieliNodeSketch
+"/Users/joerg/Documents/Arduino/hardware/CubeCell/CubeCell/tools/CubeCellflash/CubeCellflash" -serial "/dev/tty.usbserial-0001" "/private/var/folders/n6/jjw6yp4s2dz0sd76rz3k7mzm0000gn/T/arduino/sketches/97CDDDDD36F10A320334F076837B4C34/CubeCell_Board_V2_REGION_EU868_RGB_0.cyacd"
+
+$ mkdir -p cyacd/v2/20240909
+$ cp /private/var/folders/n6/jjw6yp4s2dz0sd76rz3k7mzm0000gn/T/arduino/sketches/97CDDDDD36F10A320334F076837B4C34/CubeCell_Board_V2_REGION_EU868_RGB_0.cyacd cyacd/v2/20240909
+
+Alternative zum Upload der Firmware:
+$ /Users/joerg/Documents/Arduino/hardware/CubeCell/CubeCell/tools/CubeCellflash/CubeCellflash -serial /dev/tty.usbserial-0001 cyacd/v2/20240909/CubeCell_Board_REGION_EU868_RGB_0.cyacd
+
+USB-Device kann am einfachsten wie folgt bestimmt werden:
+
+joerg@mbp mini-beieli-node-cubecell % ls -l /dev/tty.usbserial*
+crw-rw-rw-  1 root  wheel  0x9000004 28 Dez 19:38 /dev/tty.usbserial-0001
 `

appkey.go

@@ -0,0 +1,62 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+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])
+
+		return appkey
+
+	} else {
+		fmt.Printf("devEui has wrong length: %s\n", deveui)
+		return ""
+	}
+}
+
+func main() {
+	if len(os.Args) != 2 {
+		fmt.Println("usage: " + filepath.Base(os.Args[0]) + " <DevEui>")
+		os.Exit(1)
+	}
+
+	devEui := os.Args[1]
+	appKey := getAppKey(devEui)
+	fmt.Printf("%s\n", appKey)
+}

calibrate.go

@@ -0,0 +1,152 @@
+package main
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"github.com/tarm/serial"
+	"log"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type SensorData struct {
+	WeightARaw string `json:"weight_a_raw"`
+	WeightBRaw string `json:"weight_b_raw"`
+}
+
+// returns last line of output
+func sendCommand(p *serial.Port, command string) string {
+	fmt.Printf("%s\n", command)
+	var last_line string = ""
+	p.Flush()
+	_, err := p.Write([]byte(command))
+	if err != nil {
+		log.Fatal(err)
+	}
+	buf := make([]byte, 1024)
+
+	time.Sleep(500 * time.Millisecond)
+
+	n, _ := p.Read(buf)
+	if n > 0 {
+		last_line_arr := strings.Split(string(buf[:n]), "\n")
+		//fmt.Printf("AAA: %+q\n", last_line_arr)
+		last_line = last_line_arr[len(last_line_arr)-2]
+
+		fmt.Print(string(buf[:n]))
+	}
+	return last_line
+}
+
+// returns output
+func sendCommandJSON(p *serial.Port, command string) string {
+	fmt.Printf("%s\n", command)
+	var res string = ""
+	p.Flush()
+	_, err := p.Write([]byte(command))
+	if err != nil {
+		log.Fatal(err)
+	}
+	buf := make([]byte, 1024)
+
+	time.Sleep(3000 * time.Millisecond)
+
+	n, _ := p.Read(buf)
+	if n > 0 {
+		res = string(buf[:n-1])
+	}
+	return res
+}
+
+func getDevEui(p *serial.Port) string {
+	var reply = sendCommand(p, "AT+ChipID=?")
+	//fmt.Printf("XXX%sYYY\n",reply)
+	if len(reply) >= 20 {
+		return "0000" + reply[8:20]
+	} else {
+		return ""
+	}
+}
+
+func ReadSensorData(p *serial.Port) SensorData {
+	var reply = sendCommandJSON(p, "AT+READ_SENSORS=?")
+	fmt.Printf("XXX%sYYY\n", reply)
+
+	var data SensorData
+	json.Unmarshal([]byte(reply), &data)
+	//fmt.Printf("%v \n", data)
+
+	//fmt.Printf("weight_a_raw: %s\n", data.WeightARaw)
+	//fmt.Printf("weight_b_raw: %s\n", data.WeightBRaw)
+
+	return data
+}
+
+func readSerial(p *serial.Port) {
+	p.Flush()
+	buf := make([]byte, 32)
+
+	time.Sleep(200 * time.Millisecond)
+	n, _ := p.Read(buf)
+	for n > 0 {
+		// ignoring error as EOF raises error on Linux
+		reply := string(buf[:n])
+		fmt.Print(reply)
+		n, _ = p.Read(buf)
+	}
+}
+
+func main() {
+	if len(os.Args) != 3 {
+		fmt.Println("usage: " + filepath.Base(os.Args[0]) + " <SerialDevice> <calibration_weight_in_gram>")
+		os.Exit(1)
+	}
+
+	serialdev := os.Args[1]
+	calWeightS := os.Args[2]
+	calWeight, _ := strconv.Atoi(calWeightS)
+
+	c := &serial.Config{Name: serialdev, Baud: 115200, ReadTimeout: time.Second * 1}
+	s, err := serial.OpenPort(c)
+	if err != nil {
+		log.Fatal("Problem mit Serial Interface")
+	}
+
+	sendCommand(s, "AT+XXX")
+	devEui := getDevEui(s)
+	reader := bufio.NewReader(os.Stdin)
+	if devEui != "" {
+		fmt.Println("Hit Return when no weight is on scale (neither on A not on B)")
+		reader.ReadString('\n')
+		sendCommand(s, "AT+XXX")
+		sensorData := ReadSensorData(s)
+		fmt.Printf("%v\n", sensorData)
+		a0, _ := strconv.Atoi(sensorData.WeightARaw)
+		b0, _ := strconv.Atoi(sensorData.WeightBRaw)
+		sendCommand(s, "AT+CAL_A_0="+sensorData.WeightARaw)
+		sendCommand(s, "AT+CAL_B_0="+sensorData.WeightBRaw)
+		fmt.Println("Put Weight on Scale A, then hit Return")
+		reader.ReadString('\n')
+		sendCommand(s, "AT+XXX")
+		sensorData = ReadSensorData(s)
+		aW, _ := strconv.Atoi(sensorData.WeightARaw)
+		fmt.Println("Put Weight on Scale B, then hit Return")
+		reader.ReadString('\n')
+		sendCommand(s, "AT+XXX")
+		sensorData = ReadSensorData(s)
+		bW, _ := strconv.Atoi(sensorData.WeightBRaw)
+		calA := float64(aW-a0) / float64(calWeight)
+		calB := float64(bW-b0) / float64(calWeight)
+		sendCommand(s, "AT+CAL_A_FACTOR="+fmt.Sprintf("%f", calA))
+		sendCommand(s, "AT+CAL_B_FACTOR="+fmt.Sprintf("%f", calB))
+		sendCommand(s, "AT+READ_CONFIG=?")
+		sendCommand(s, "AT+RESET=1")
+		readSerial(s)
+	} else {
+		log.Fatal("Could not get devEui (that is: ChipID)")
+	}
+}

go.mod

@@ -0,0 +1,7 @@
+module gitlab.com/mini-beieli-node-cubecell/v2
+
+go 1.17
+
+require github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07
+
+require golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e // indirect

go.sum

@@ -0,0 +1,4 @@
+github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07 h1:UyzmZLoiDWMRywV4DUYb9Fbt8uiOSooupjTq10vpvnU=
+github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07/go.mod h1:kDXzergiv9cbyO7IOYJZWg1U88JhDg3PB6klq9Hg2pA=
+golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e h1:fLOSk5Q00efkSvAm+4xcoXD+RRmLmmulPn5I3Y9F2EM=
+golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

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)