Merge pull request #20 from klagr/corr-branch

Corr branch

Author: finitespace

examples/BME280_Modes/BME280_Modes.ino

@@ -43,13 +43,13 @@ BME280I2C bme;                     // Default : forced mode, standby time = 1000
                                 // RMS Noise = 3.3 Pa/30 cm, 0.07 %RH
                                 // Data Output Rate 1/60 Hz
 
-//BME280I2C bme(0, 1, 1);          // Humidity Sensing : forced mode, 1 sample/second
+//BME280I2C bme(1, 1, 0);          // Humidity Sensing : forced mode, 1 sample/second
                                 // pressure ×0, temperature ×1, humidity ×1, filter off
                                 // Current Consumption = 2.9 μA
                                 // RMS Noise = 0.07 %RH
                                 // Data Output Rate =  1 Hz
 
-//BME280I2C bme(5, 2, 1, 1, 0, 4); // Indoor Navigation : normal mode, standby time = 0.5ms
+//BME280I2C bme(2, 1, 5, 3, 0, 4); // Indoor Navigation : normal mode, standby time = 0.5ms
                                 // pressure ×16, temperature ×2, humidity ×1, filter = x16
                                 // Current Consumption = 633 μA
                                 // RMS Noise = 0.2 Pa/1.7 cm
@@ -58,7 +58,7 @@ BME280I2C bme;                     // Default : forced mode, standby time = 1000
                                 // Response Time (75%) = 0.9 s
 
 
-//BME280I2C bme(3, 1, 0, 1, 0, 4); // Gaming : normal mode, standby time = 0.5ms
+//BME280I2C bme(1, 0, 4, 3, 0, 4); // Gaming : normal mode, standby time = 0.5ms
                                 // pressure ×4, temperature ×1, humidity ×0, filter = x16
                                 // Current Consumption = 581 μA
                                 // RMS Noise = 0.3 Pa/2.5 cm

library.properties

@@ -1,5 +1,5 @@
 name=BME280
-version=2.1.02
+version=2.1.2
 author=Tyler Glenn <[email protected]>
 maintainer=Tyler Glenn <[email protected]>
 sentence=Provides a library for reading and interpreting Bosch BME280 environmental sensor data over I2C and SPI.

src/BME280.cpp

@@ -113,7 +113,7 @@ float BME280::CalculatePressure(int32_t raw, int32_t t_fine, uint8_t unit){
       final /= 101324.99766353; /* final pa * 1 atm/101324.99766353Pa */
       break;
     case 0x4: /* bar */
-      final /= 100*1000;          /* final pa * 1 bar/100kPa */
+      final /= 100000.0;          /* final pa * 1 bar/100kPa */
       break;
     case 0x5: /* torr */
       final /= 133.32236534674;        /* final pa * 1 torr/133.32236534674Pa */
@@ -156,7 +156,7 @@ float BME280::temp(bool celsius){
   return CalculateTemperature(rawTemp, t_fine, celsius);
 }
 
-float BME280::press(uint8_t unit){
+float BME280::pres(uint8_t unit){
   int32_t data[8];
   int32_t t_fine;
   if(!ReadData(data)){ return NAN; }

src/BME280.h

@@ -82,8 +82,8 @@ class BME280{
 
 public:
   /* ==== Constructor used to create the class. All parameters have default values. ==== */
-  BME280(uint8_t tosr = 0x1, uint8_t hosr = 0x1, uint8_t posr = 0x1, uint8_t mode = 0x3,
-    uint8_t st = 0x5, uint8_t filter = 0x0, bool spiEnable = false);  // Oversampling = 1, mode = normal, standby time = 1000ms, filter = none.
+  BME280(uint8_t tosr = 0x1, uint8_t hosr = 0x1, uint8_t posr = 0x1, uint8_t mode = 0x1,
+    uint8_t st = 0x5, uint8_t filter = 0x0, bool spiEnable = false);  // Oversampling = 1, mode = forced, standby time = 1000ms, filter = none.
 
   /* ==== Method used at start up to initialize the class. ==== */
   virtual bool begin()=0;
@@ -94,7 +94,7 @@ class BME280{
   float temp(bool celsius = true);
 
   /* ==== Read the pressure from the BME280 and return a float with the specified unit.  ==== */
-  float press(uint8_t unit = 0x0);   // unit: B000 = Pa, B001 = hPa, B010 = Hg, B011 = atm, B100 = bar, B101 = torr, B110 = N/m^2, B111 = psi
+  float pres(uint8_t unit = 0x0);   // unit: B000 = Pa, B001 = hPa, B010 = Hg, B011 = atm, B100 = bar, B101 = torr, B110 = N/m^2, B111 = psi
 
   /* ==== Read the humidity from the BME280 and return a percentage as a float. ==== */
   float hum();

src/BME280I2C.cpp

@@ -96,21 +96,26 @@ bool BME280I2C::ReadTrim()
     dig[ord++] = Wire.read();
   }
 
+#ifdef DEBUG_ON
   Serial.print("Dig: ");
   for(int i = 0; i < 32; ++i)
   {
     Serial.print(dig[i], HEX);
     Serial.print(" ");
   }
   Serial.println();
-
+#endif
 
   return ord == 32;
 }
 
 bool BME280I2C::ReadData(int32_t data[8]){
   uint8_t ord = 0;
 
+  // for forced mode we need to write the mode to BME280 register before reading
+  if ( (mode == 0x01) || (mode == 0x10) )
+    setMode(mode);
+
   // Registers are in order. So we can start at the pressure register and read 8 bytes.
   Wire.beginTransmission(bme_280_addr);
   Wire.write(PRESS_ADDR);
@@ -121,13 +126,15 @@ bool BME280I2C::ReadData(int32_t data[8]){
       data[ord++] = Wire.read();
   }
 
+#ifdef DEBUG_ON
   Serial.print("Data: ");
   for(int i = 0; i < 8; ++i)
   {
     Serial.print(data[i], HEX);
     Serial.print(" ");
   }
   Serial.println();
+#endif
 
   return ord == 8;
 }

src/BME280I2C.h

@@ -54,9 +54,9 @@ class BME280I2C: public BME280{
 
 public:
   /* ==== Constructor used to create the class. All parameters have default values. ==== */
-  BME280I2C(uint8_t tosr = 0x1, uint8_t hosr = 0x1, uint8_t posr = 0x1, uint8_t mode = 0x3,
+  BME280I2C(uint8_t tosr = 0x1, uint8_t hosr = 0x1, uint8_t posr = 0x1, uint8_t mode = 0x1,
     uint8_t st = 0x5, uint8_t filter = 0x0, bool spiEnable = false,
-    uint8_t bme_280_addr = 0x76);  // Oversampling = 1, mode = normal, standby time = 1000ms, filter = none.
+    uint8_t bme_280_addr = 0x76);  // Oversampling = 1, mode = forced, standby time = 1000ms, filter = none.
 
   /* ==== Method used at start up to initialize the class. Starts the I2C interface. ==== */
   virtual bool begin();

src/BME280Spi.h

@@ -60,8 +60,8 @@ class BME280Spi: public BME280{
 
 public:
   /* ==== Constructor used to create the class. All parameters have default values. ==== */
-  BME280Spi(uint8_t spiCsPin, uint8_t tosr = 0x1, uint8_t hosr = 0x1, uint8_t posr = 0x1, uint8_t mode = 0x3,
-    uint8_t st = 0x5, uint8_t filter = 0x0);  // Oversampling = 1, mode = normal, standby time = 1000ms, filter = none.
+  BME280Spi(uint8_t spiCsPin, uint8_t tosr = 0x1, uint8_t hosr = 0x1, uint8_t posr = 0x1, uint8_t mode = 0x1,
+    uint8_t st = 0x5, uint8_t filter = 0x0);  // Oversampling = 1, mode = forced, standby time = 1000ms, filter = none.
 
   /* ==== Method used at start up to initialize the class. Starts the I2C interface. ==== */
   virtual bool begin();

src/BME280SpiSw.h

@@ -67,7 +67,7 @@ class BME280SpiSw: public BME280{
 public:
   /* ==== Constructor for software spi ==== */
   BME280SpiSw(uint8_t spiCsPin, uint8_t spiMosiPin, uint8_t spiMisoPin, uint8_t spiSckPin, uint8_t tosr = 0x1,
-    uint8_t hosr = 0x1, uint8_t posr = 0x1, uint8_t mode = 0x3, uint8_t st = 0x5, uint8_t filter = 0x0);  // Oversampling = 1, mode = normal, standby time = 1000ms, filter = none.
+    uint8_t hosr = 0x1, uint8_t posr = 0x1, uint8_t mode = 0x1, uint8_t st = 0x5, uint8_t filter = 0x0);  // Oversampling = 1, mode = forced, standby time = 1000ms, filter = none.
 
   /* ==== Method used at start up to initialize the class. Starts the I2C interface. ==== */
   virtual bool begin();