SDS011 code sanitizations

include/globals.h

@@ -111,6 +111,11 @@ typedef struct {
   float gas;             // raw gas sensor signal
 } bmeStatus_t;
 
+typedef struct {
+  float pm10;
+  float pm25;
+} sdsStatus_t;
+
 extern std::set<uint16_t, std::less<uint16_t>, Mallocator<uint16_t>> macs;
 extern std::array<uint64_t, 0xff>::iterator it;
 extern std::array<uint64_t, 0xff> beacons;

include/payload.h

@@ -59,8 +59,7 @@ public:
   void addButton(uint8_t value);
   void addSensor(uint8_t[]);
   void addTime(time_t value);
-  void addPM10(float value);
+  void addSDS(sdsStatus_t value);
-  void addPM25(float value);
 private:
   void addChars( char* string, int len);
 

include/sds011read.h

@@ -1,6 +1,7 @@
 #ifndef _SDS011READ_H
 #define _SDS011READ_H
 
+#include "globals.h"
 #include <SDS011.h>
 
 #define SDCARD_FILE_HEADER_SDS011     ", PM10,PM25"
@@ -9,5 +10,6 @@ bool sds011_init();
 void sds011_loop();
 void sds011_sleep(void);
 void sds011_wakeup(void);
+void sds011_store(sdsStatus_t *sds_store);
 
 #endif // _SDS011READ_H

platformio.ini

@@ -73,8 +73,7 @@ lib_deps_sensors =
     Adafruit BME280 Library@>=2.0.0
     Adafruit BMP085 Library@>=1.0.1
     BSEC Software Library@1.5.1474
-    ;SDS011 sensor Library
+    https://github.com/ricki-z/SDS011.git#33fd8b6 ;SDS011 sensor Library
-    https://github.com/ricki-z/SDS011.git#33fd8b6
 lib_deps_basic =
     ArduinoJson@^5.13.1
     76@>=1.2.4 ; #76 Timezone by Jack Christensen

src/gpsread.cpp

@@ -10,8 +10,7 @@ static const char TAG[] = __FILE__;
 TinyGPSPlus gps;
 TinyGPSCustom gpstime(gps, "GPZDA", 1); // field 1 = UTC time
 static const String ZDA_Request = "$EIGPQ,ZDA*39\r\n";
-
+static gpsStatus_t gps_status = {0};
-gpsStatus_t gps_status = {0};
 TaskHandle_t GpsTask;
 
 #ifdef GPS_SERIAL

src/hal/generic.h

@@ -48,8 +48,14 @@
 //#define HAS_BMP180
 //#define BMP180_ADDR 0x77
 
+// SDS011 dust sensor settings
+#define HAS_SDS011 1 // use SDS011
+// used pins on the ESP-side:
+#define SDS_TX 19     // connect to RX on the SDS011
+#define SDS_RX 23     // connect to TX on the SDS011
+
 // user defined sensors
-//#define HAS_SENSORS 1 // comment out if device has user defined sensors
+#define HAS_SENSORS 1 // comment out if device has user defined sensors
 
 #define CFG_sx1276_radio 1 // select LoRa chip
 //#define CFG_sx1272_radio 1 // select LoRa chip

src/hal/ttgov21new.h

@@ -15,8 +15,8 @@
 // SDS011 dust sensor settings
 #define HAS_SDS011 1 // use SDS011
 // used pins on the ESP-side:
-#define ESP_PIN_TX 19     // connect to RX on the SDS011
+#define SDS_TX 19     // connect to RX on the SDS011
-#define ESP_PIN_RX 23     // connect to TX on the SDS011
+#define SDS_RX 23     // connect to TX on the SDS011
 
 #define HAS_LORA 1       // comment out if device shall not send data via LoRa
 #define CFG_sx1276_radio 1 // HPD13A LoRa SoC

src/payload.cpp

@@ -124,6 +124,16 @@ void PayloadConvert::addBME(bmeStatus_t value) {
 #endif
 }
 
+void PayloadConvert::addSDS(sdsStatus_t sds) {
+#if (HAS_SDS011)
+  char tempBuffer[10 + 1];
+  sprintf(tempBuffer, ",%5.1f", sds.pm10);
+  addChars(tempBuffer, strlen(tempBuffer));
+  sprintf(tempBuffer, ",%5.1f", sds.pm25);
+  addChars(tempBuffer, strlen(tempBuffer));
+#endif // HAS_SDS011
+}
+
 void PayloadConvert::addButton(uint8_t value) {
 #ifdef HAS_BUTTON
   buffer[cursor++] = value;
@@ -220,6 +230,13 @@ void PayloadConvert::addBME(bmeStatus_t value) {
 #endif
 }
 
+void PayloadConvert::addSDS(sdsStatus_t sds) {
+#if (HAS_SDS011)
+  writeUint16((uint16_t)(sds.pm10 * 10));
+  writeUint16((uint16_t)(sds.pm25 * 10));
+#endif // HAS_SDS011
+}
+
 void PayloadConvert::addButton(uint8_t value) {
 #ifdef HAS_BUTTON
   writeUint8(value);
@@ -242,9 +259,7 @@ void PayloadConvert::uintToBytes(uint64_t value, uint8_t byteSize) {
   }
 }
 
-void PayloadConvert::writeUptime(uint64_t uptime) {
+void PayloadConvert::writeUptime(uint64_t uptime) { writeUint64(uptime); }
-  writeUint64(uptime);
-}
 
 void PayloadConvert::writeVersion(char *version) {
   memcpy(buffer + cursor, version, 10);
@@ -265,13 +280,9 @@ void PayloadConvert::writeUint16(uint16_t i) { uintToBytes(i, 2); }
 
 void PayloadConvert::writeUint8(uint8_t i) { uintToBytes(i, 1); }
 
-void PayloadConvert::writeUFloat(float value) {
+void PayloadConvert::writeUFloat(float value) { writeUint16(value * 100); }
-  writeUint16(value * 100);
-}
 
-void PayloadConvert::writePressure(float value) {
+void PayloadConvert::writePressure(float value) { writeUint16(value * 10); }
-  writeUint16(value * 10);
-}
 
 /**
  * Uses a 16bit two's complement with two decimals, so the range is
@@ -315,7 +326,22 @@ void PayloadConvert::writeBitmap(bool a, bool b, bool c, bool d, bool e, bool f,
 void PayloadConvert::addByte(uint8_t value) {
   /*
   not implemented
-  */ }
+  */
+}
+
+void PayloadConvert::addSDS(sdsStatus_t sds) {
+#if (HAS_SDS011)
+
+#if (PAYLOAD_ENCODER == 3) // Cayenne LPP dynamic
+#error not implemented yet
+#endif
+
+#if (PAYLOAD_ENCODER == 4) // Cayenne LPP packed
+#error not implemented yet
+#endif
+
+#endif // HAS_SDS011
+}
 
 void PayloadConvert::addCount(uint16_t value, uint8_t snifftype) {
   switch (snifftype) {
@@ -491,38 +517,6 @@ void PayloadConvert::addTime(time_t value) {
 }
 #endif // PAYLOAD_ENCODER
 
-void PayloadConvert::addPM10( float value) {
-#if (HAS_SDS011)
-#if (PAYLOAD_ENCODER == 1)   // plain
-    char tempBuffer[10+1];
-    sprintf( tempBuffer, ",%5.1f", value);
-    addChars(tempBuffer, strlen(tempBuffer));
-#elif (PAYLOAD_ENCODER == 2 ) // packed
-    writeUint16( (uint16_t) (value*10) );
-#elif (PAYLOAD_ENCODER == 3 ) // Cayenne LPP dynamic
-#error not implemented yet
-#elif (PAYLOAD_ENCODER == 4 ) // Cayenne LPP packed
-#error not implemented yet
-#endif
-#endif // HAS_SDS011
-}
-
-void PayloadConvert::addPM25( float value) {
-#if (HAS_SDS011)
-#if (PAYLOAD_ENCODER == 1)   // plain
-    char tempBuffer[10+1];
-    sprintf( tempBuffer, ",%5.1f", value);
-    addChars(tempBuffer, strlen(tempBuffer));
-#elif (PAYLOAD_ENCODER == 2 ) // packed
-    writeUint16( (uint16_t) (value*10) );
-#elif (PAYLOAD_ENCODER == 3 ) // Cayenne LPP dynamic
-#error not implemented yet
-#elif (PAYLOAD_ENCODER == 4 ) // Cayenne LPP packed
-#error not implemented yet
-#endif
-#endif // HAS_SDS011
-}
-
 void PayloadConvert::addChars(char *string, int len) {
   for (int i = 0; i < len; i++)
     addByte(string[i]);

src/sdcard.cpp

@@ -6,12 +6,6 @@
 static const char TAG[] = __FILE__;
 
 #include "sdcard.h"
-#if (HAS_SDS011)
-#include <sds011read.h>
-// the results of the sensor:
-extern float pm25;              
-extern float pm10;
-#endif
 
 static bool useSDCard;
 
@@ -33,6 +27,9 @@ void sdcardWriteData(uint16_t noWifi, uint16_t noBle) {
   static int counterWrites = 0;
   char tempBuffer[12 + 1];
   time_t t = now();
+#if (HAS_SDS011)
+  sdsStatus_t sds;
+#endif
 
   if (!useSDCard)
     return;
@@ -45,7 +42,8 @@ void sdcardWriteData(uint16_t noWifi, uint16_t noBle) {
   sprintf(tempBuffer, "%d,%d", noWifi, noBle);
   fileSDCard.print(tempBuffer);
 #if (HAS_SDS011)
-    sprintf(tempBuffer, ",%5.1f,%4.1f", pm10, pm25);
+  sds011_store(&sds);
+  sprintf(tempBuffer, ",%5.1f,%4.1f", sds.pm10, sds.pm25);
   fileSDCard.print(tempBuffer);
 #endif
   fileSDCard.println();

src/sds011read.cpp

@@ -1,5 +1,7 @@
 // routines for fetching data from the SDS011-sensor
 
+#if (HAS_SDS011)
+
 // Local logging tag
 static const char TAG[] = __FILE__;
 
@@ -13,16 +15,13 @@ static HardwareSerial sdsSerial(2); // so we use it here
 static SDS011 sdsSensor;            // fine dust sensor
 
 // the results of the sensor:
-float pm25;
+static float pm10, pm25;
-float pm10;
 boolean isSDS011Active;
 
 // init
 bool sds011_init() {
   pm25 = pm10 = 0.0;
-#if (HAS_SDS011)  
+  sdsSensor.begin(&sdsSerial, SDS_RX, SDS_TX);
-  sdsSensor.begin (&sdsSerial,  ESP_PIN_RX, ESP_PIN_TX);
-#endif  
   sds011_sleep(); // we do sleep/wakup by ourselves
   return true;
 }
@@ -42,6 +41,12 @@ void sds011_loop() {
   return;
 }
 
+// retrieving stored data:
+void sds011_store(sdsStatus_t *sds_store) {
+  sds_store->pm10 = pm10;
+  sds_store->pm25 = pm25;
+}
+
 // putting the SDS-sensor to sleep
 void sds011_sleep(void) {
   sdsSensor.sleep();
@@ -56,3 +61,5 @@ void sds011_wakeup() {
     isSDS011Active = true;
   }
 }
+
+#endif // HAS_SDS011

src/senddata.cpp

@@ -3,11 +3,6 @@
 
 Ticker sendcycler;
 
-#if (HAS_SDS011)
-extern float pm10;
-extern float pm25;
-#endif
-
 void sendcycle() {
   xTaskNotifyFromISR(irqHandlerTask, SENDCYCLE_IRQ, eSetBits, NULL);
 }
@@ -71,6 +66,9 @@ void sendData() {
 #if (HAS_GPS)
   gpsStatus_t gps_status;
 #endif
+#if (HAS_SDS011)
+  sdsStatus_t sds_status;
+#endif
 
   while (bitmask) {
     switch (bitmask & mask) {
@@ -101,8 +99,8 @@ void sendData() {
         payload.addCount(macs_ble, MAC_SNIFF_BLE);
 #endif
 #if (HAS_SDS011)
-      payload.addPM10(pm10);
+      sds011_store(&sds_status);
-      payload.addPM25(pm25);
+      payload.addSDS(sds_status);
 #endif
       SendPayload(COUNTERPORT, prio_normal);
       // clear counter if not in cumulative counter mode