fix bug with big difference

MiniBeieliNodeSketch/MiniBeieliNodeSketch.ino

@@ -12,19 +12,16 @@ BME280 bme280;
 /******************************************************************************/
 /* Firmware Version                                                           */
 /******************************************************************************/
-static const int32_t fwVersion = 20210205;
+static const int32_t fwVersion = 20210427;
 
 /******************************************************************************/
 /* LoraWAN Settings                                                           */
 /******************************************************************************/
 
 /* OTAA para*/
-//uint8_t devEui[] = { 0x22, 0x32, 0x33, 0x00, 0x00, 0x88, 0x88, 0x02 };
-//uint8_t appEui[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
-//uint8_t appKey[] = { 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x66, 0x01 };
-uint8_t devEui[] = { 0x00, 0x00, 0xd3, 0xa6, 0x59, 0x83, 0x3b, 0x25 };
-uint8_t appEui[] = { 0x70, 0xb3, 0xd5, 0x7e, 0xd0, 0x02, 0xe5, 0xab };
-uint8_t appKey[] = { 0x00, 0x00, 0xd3, 0xa6, 0x59, 0x83, 0x3b, 0x25, 0x00, 0x00, 0xd3, 0xa6, 0x59, 0x83, 0x3b, 0x25 };
+uint8_t devEui[8];
+uint8_t appEui[8];
+uint8_t appKey[16];
 
 /* ABP para*/
 uint8_t nwkSKey[] = { 0x15, 0xb1, 0xd0, 0xef, 0xa4, 0x63, 0xdf, 0xbe, 0x3d, 0x11, 0x18, 0x1e, 0x1e, 0xc7, 0xda, 0x85 };
@@ -170,6 +167,9 @@ typedef struct {
   float cal_a_factor;                               // 4 Bytes, Kalibrationsfaktor Waegezelle 1
   float cal_b_factor;                               // 4 Bytes, Kalibrationsfaktor Waegezelle 2
   byte debug_level;                                 // 0 => no debugging, no led, 1 => infos, no led, 2 => infos, 3 => error, 4 => highest level
+  uint8_t devEui[8];                                // keep OTAA settings so that new fw-updates does not overwrite it
+  uint8_t appEui[8];                                // dito
+  uint8_t appKey[16];                               // dito
 } __attribute__((packed)) CONFIG_data;
 
 typedef struct {
@@ -655,6 +655,19 @@ bool checkUserAt(char *cmd, char *content)
     return true;
   }
 
+  if (strcmp(cmd, "SAVE_OTAA_CONFIG") == 0)
+  {
+    if (content[0] == '1')
+    {
+      memcpy(config_data.devEui, devEui, sizeof(devEui));
+      memcpy(config_data.appEui, appEui, sizeof(appEui));
+      memcpy(config_data.appKey, appKey, sizeof(appKey));
+      WriteConfigDataToFlash();
+      Serial.printf("saved OTAA configuration to flash\n");
+    }
+    return true;
+  }
+
   if (strcmp(cmd, "READ_SENSORS") == 0)
   {
     if (content[0] == '?')
@@ -763,6 +776,10 @@ void setup_platform(void)
 
   // read config_data from flash...
   ReadConfigDataFromFlash();
+  memcpy(devEui, config_data.devEui, sizeof(config_data.devEui));
+  memcpy(appEui, config_data.appEui, sizeof(config_data.appEui));
+  memcpy(appKey, config_data.appKey, sizeof(config_data.appKey));
+
   if (config_data.debug_level > 0) {
     Serial.printf("Setup_platform, this is the configuration\n");
     Serial.printf("cal_a_0: %d\n", config_data.cal_a_0);
@@ -833,12 +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;
@@ -890,6 +909,7 @@ 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) {

README.md

@@ -20,10 +20,52 @@ Autor: Joerg Lehmann, nbit Informatik GmbH
 
 Das sind die verwendeten Libraries [1]:
 
-| URL | Commit | Commit Date |
-| --- | -----  | ----------- |
-| https://github.com/HelTecAutomation/ASR650x-Arduino.git  | 9856523 | Thu, 4 Feb 2021 18:02:48 +0800  |
-| https://github.com/sparkfun/SparkFun_Qwiic_Scale_NAU7802_Arduino_Library.git  | 688f255 | Fri, 3 Jan 2020 12:35:22 -0700  |
-| https://github.com/sparkfun/SparkFun_BME280_Arduino_Library.git  | 0b5eabf | Wed, 30 Dec 2020 20:44:27 -0700  |
+| URL | Branch | Commit | Commit Date |
+| --- | ------ | -----  | ----------- |
+| 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' ' ') | $(git log --pretty=format:'%h | %cD ' -n 1) |"
+`
+
+## Wir verwenden arduino-cli
+
+Installation:
+`
+$ curl -fsSL https://raw.githubusercontent.com/arduino/arduino-cli/master/install.sh | BINDIR=~/bin sh
+$ arduino-cli version
+arduino-cli alpha Version: 0.18.1 Commit: b3cf8e19 Date: 2021-04-13T13:08:30Z
+
+$ arduino-cli sketch new MiniBeieliNodeSketch
+
+$ arduino-cli core update-index
+
+$ arduino-cli board listall
+
+$ arduino-cli core install CubeCell:CubeCell
+$ arduino-cli core list
+
+Compile:
+$ 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:
+/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 +120,12 @@ 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)
 	} else {