Merge pull request #78 from yanbec/master

Added reset() function
finitespace · Feb 26, 2021 · 18de58e · 18de58e
2 parents 2759e78 + afac105
commit 18de58e
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diff --git a/src/BME280.cpp b/src/BME280.cpp
@@ -151,6 +151,14 @@ bool BME280::begin
    return success;
 }
 
+/****************************************************************/
+bool BME280::reset()
+{
+   WriteRegister(RESET_ADDR, RESET_VALUE);
+   delay(2); //max. startup time according to datasheet
+   return(begin());
+}
+
 /****************************************************************/
 void BME280::CalculateRegisters
 (

diff --git a/src/BME280.h b/src/BME280.h
@@ -162,6 +162,10 @@ class BME280
    /// Method used to initialize the class.
    bool begin();
 
+   ////////////////////////////////////////////////////////////////
+   /// Method to restart BME280. begin() needs to beed called afterwards
+   bool reset();
+
 /*****************************************************************/
 /* ENVIRONMENTAL FUNCTIONS                                       */
 /*****************************************************************/
@@ -246,6 +250,9 @@ class BME280
    static const uint8_t HUM_DIG_ADDR1   = 0xA1;
    static const uint8_t HUM_DIG_ADDR2   = 0xE1;
    static const uint8_t ID_ADDR         = 0xD0;
+   static const uint8_t RESET_ADDR	= 0xE0;
+
+   static const uint8_t RESET_VALUE	= 0xB6;
 
    static const uint8_t TEMP_DIG_LENGTH         = 6;
    static const uint8_t PRESS_DIG_LENGTH        = 18;
@@ -305,6 +312,7 @@ class BME280
    /// successful and the id matches a known value.
    bool ReadChipID();
 
+
    /////////////////////////////////////////////////////////////////
    /// Read the the trim data from the BME280, return true if
    /// successful.