Juergen M / TMP007

Drivber for Ti's TMP007 Infrared Thermopile Sensor with Integrated Math Engine

Files at this revision

API Documentation at this revision

Revision 1:93710a3abf0a, committed 2016-06-05

Comitter:
messi1
Date:
Sun Jun 05 19:53:43 2016 +0000
Parent:
0:a1ed9ce625d4
Commit message:
Add TMP007_Defs.h file

Changed in this revision

include/TMP007.h Show annotated file Show diff for this revision Revisions of this file
include/TMP007_Defs.h Show annotated file Show diff for this revision Revisions of this file
src/TMP007.cpp Show annotated file Show diff for this revision Revisions of this file 
diff -r a1ed9ce625d4 -r 93710a3abf0a include/TMP007.h
--- a/include/TMP007.h	Sun Jun 05 19:38:48 2016 +0000
+++ b/include/TMP007.h	Sun Jun 05 19:53:43 2016 +0000
@@ -24,60 +24,8 @@
  
 #include <I2C.h>
 #include "PinNames.h"
-
+#include "TMP007_Defs.h"
 
-// Constants for calculating object temperature
-#define TMP007_B0 -0.0000294
-#define TMP007_B1 -0.00000057
-#define TMP007_B2 0.00000000463
-#define TMP007_C2 13.4
-#define TMP007_TREF 298.15
-#define TMP007_A2 -0.00001678
-#define TMP007_A1 0.00175
-#define TMP007_S0 6.4  // * 10^-14
- 
-// Configuration Settings
-#define TMP007_CFG_RESET         0x8000
-#define TMP007_CFG_MODEON        0x1000
-#define TMP007_CFG_1SAMPLE       0x0000
-#define TMP007_CFG_2SAMPLE       0x0200
-#define TMP007_CFG_4SAMPLE       0x0400
-#define TMP007_CFG_8SAMPLE       0x0600
-#define TMP007_CFG_16SAMPLE      0x0800
-#define TMP007_CFG_1SAMPLE_LPWR  0x0a00
-#define TMP007_CFG_2SAMPLE_LPWR  0x0c00
-#define TMP007_CFG_4SAMPLE_LPWR  0x0e00
-#define TMP007_CFG_ALRTEN        0x0100
-#define TMP007_CFG_ALLRTF        0x0080
-#define TMP007_CFG_TC            0x0040
-#define TMP007_CFG_INT_COMP      0x0020
- 
-// Registers to read thermopile voltage and sensor temperature
-#define TMP007_SENSOR_VOLT         0x00  //RO
-#define TMP007_LOCAL_TEMP          0x01  //RO
-#define TMP007_CONFIG              0x02  //RW
-#define TMP007_OBJECT_TEMP         0x03  //RO
-#define TMP007_STATUS              0x04  //RO
-#define TMP007_STATUS_MASK         0x05  //RW
-
-#define TMP007_OBJECT_TEMP_HI_LIM  0x06  //RW
-#define TMP007_OBJECT_TEMP_LO_LIM  0x07  //RW
-#define TMP007_LOCAL_TEMP_HI_LIM   0x08  //RW
-#define TMP007_LOCAL_TEMP_LO_LIM   0x09  //RW
-
-#define TMP007_COEFFICIENT_S0      0x0a  //RW
-#define TMP007_COEFFICIENT_A1      0x0b  //RW
-#define TMP007_COEFFICIENT_A2      0x0c  //RW
-#define TMP007_COEFFICIENT_B0      0x0d  //RW
-#define TMP007_COEFFICIENT_B1      0x0e  //RW
-#define TMP007_COEFFICIENT_B2      0x0f  //RW
-#define TMP007_COEFFICIENT_C2      0x10  //RW
-#define TMP007_COEFFICIENT_TC0     0x11  //RW
-#define TMP007_COEFFICIENT_TC1     0x12  //RW
-
-#define TMP007_MANUFACTURE_ID      0x1E  //RO
-#define TMP007_DEVICE_ID           0x1F  //RO
-#define TMP007_MEM_ACCESS          0x2A  //RW
 
 class TMP007
 {
@@ -90,6 +38,7 @@
     uint16_t readConfig() ;
     
     uint16_t readStatus();
+    void writeStatusMask(const uint16_t value);
     
     /** Configures sensor, use before reading from it */
     void setSamples(const uint16_t samples);
@@ -113,7 +62,6 @@
     double readDieTempF();
     
   private:
-
     /**
      * Writes a word value into the register.  Note: the device must have the
      * auto-increment bit set in the MODE1 register to work.
@@ -133,8 +81,6 @@
      */
     uint16_t readWord(const uint8_t reg);
     
-
-    
 private:
     mbed::I2C        _i2cPort;
     uint8_t          _addr;

diff -r a1ed9ce625d4 -r 93710a3abf0a include/TMP007_Defs.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/TMP007_Defs.h	Sun Jun 05 19:53:43 2016 +0000
@@ -0,0 +1,67 @@
+#ifndef TMP007_DEFS_H
+#define TMP007_DEFS_H
+
+// Constants for calculating object temperature
+#define TMP007_B0       -0.0000294
+#define TMP007_B1       -0.00000057
+#define TMP007_B2       0.00000000463
+#define TMP007_C2       13.4
+#define TMP007_TREF     298.15
+#define TMP007_A2       -0.00001678
+#define TMP007_A1       0.00175
+#define TMP007_S0       6.4  // * 10^-14
+ 
+// Configuration Settings
+#define TMP007_CFG_RESET         0x8000
+#define TMP007_CFG_MODEON        0x1000
+#define TMP007_CFG_1SAMPLE       0x0000
+#define TMP007_CFG_2SAMPLE       0x0200
+#define TMP007_CFG_4SAMPLE       0x0400
+#define TMP007_CFG_8SAMPLE       0x0600
+#define TMP007_CFG_16SAMPLE      0x0800
+#define TMP007_CFG_1SAMPLE_LPWR  0x0a00
+#define TMP007_CFG_2SAMPLE_LPWR  0x0c00
+#define TMP007_CFG_4SAMPLE_LPWR  0x0e00
+#define TMP007_CFG_ALRTEN        0x0100
+#define TMP007_CFG_ALLRTF        0x0080
+#define TMP007_CFG_TC            0x0040
+#define TMP007_CFG_INT_COMP      0x0020
+
+// Status Mask 
+#define TMP007_ALRTEN            0x8000
+#define TMP007_CRTEN             0x4000
+#define TMP007_OHEN              0x2000
+#define TMP007_OLEN              0x1000
+#define TMP007_LHEN              0x0800
+#define TMP007_LLEN              0x0400
+#define TMP007_DVEN              0x0200
+#define TMP007_MEM_C_EN          0x0100
+ 
+// Registers to read thermopile voltage and sensor temperature
+#define TMP007_SENSOR_VOLT         0x00  //RO
+#define TMP007_LOCAL_TEMP          0x01  //RO
+#define TMP007_CONFIG              0x02  //RW
+#define TMP007_OBJECT_TEMP         0x03  //RO
+#define TMP007_STATUS              0x04  //RO
+#define TMP007_STATUS_MASK         0x05  //RW
+
+#define TMP007_OBJECT_TEMP_HI_LIM  0x06  //RW
+#define TMP007_OBJECT_TEMP_LO_LIM  0x07  //RW
+#define TMP007_LOCAL_TEMP_HI_LIM   0x08  //RW
+#define TMP007_LOCAL_TEMP_LO_LIM   0x09  //RW
+
+#define TMP007_COEFFICIENT_S0      0x0a  //RW
+#define TMP007_COEFFICIENT_A1      0x0b  //RW
+#define TMP007_COEFFICIENT_A2      0x0c  //RW
+#define TMP007_COEFFICIENT_B0      0x0d  //RW
+#define TMP007_COEFFICIENT_B1      0x0e  //RW
+#define TMP007_COEFFICIENT_B2      0x0f  //RW
+#define TMP007_COEFFICIENT_C2      0x10  //RW
+#define TMP007_COEFFICIENT_TC0     0x11  //RW
+#define TMP007_COEFFICIENT_TC1     0x12  //RW
+
+#define TMP007_MANUFACTURE_ID      0x1E  //RO
+#define TMP007_DEVICE_ID           0x1F  //RO
+#define TMP007_MEM_ACCESS          0x2A  //RW
+
+#endif // TMP007_DEFS_H
\ No newline at end of file

diff -r a1ed9ce625d4 -r 93710a3abf0a src/TMP007.cpp
--- a/src/TMP007.cpp	Sun Jun 05 19:38:48 2016 +0000
+++ b/src/TMP007.cpp	Sun Jun 05 19:53:43 2016 +0000
@@ -40,7 +40,7 @@
 //--------------------------------------------------------------------------------
  uint16_t TMP007::readConfig()
 {   
-     uint16_t res = readWord(TMP007_CONFIG);
+    uint16_t res = readWord(TMP007_CONFIG);
     return res;   
 }
 
@@ -50,6 +50,12 @@
     return readWord(TMP007_STATUS);
 }
 
+//--------------------------------------------------------------------------------
+void TMP007::writeStatusMask(const uint16_t value)
+{
+    writeWord(TMP007_STATUS_MASK, value);
+}
+
 //-------------------------------------------------------------------------------- 
 /** TMP007 Config method.
  *  Used for configuring the sensor with desired samples.
@@ -70,14 +76,7 @@
  */
 uint16_t TMP007::readRawLocalTemperature()
 {
-  int16_t raw = 0;
-  char reg = TMP007_LOCAL_TEMP;
-  char data[2];
-  
-  _i2cPort.write(_addr, &reg, 1);
-  _i2cPort.read(_addr,  data, 2);
-   
-  raw = (data[0] << 8) | data[1] ;
+  uint16_t raw = readWord(TMP007_LOCAL_TEMP);
  
   raw >>= 2;
   return raw;
@@ -89,15 +88,7 @@
  */
 uint16_t TMP007::readRawSensorVoltage() 
 {  
-  char reg=TMP007_SENSOR_VOLT;
-  char data[2];
-  
-  _i2cPort.write(_addr, &reg, 1);
-  _i2cPort.read(_addr, data, 2);
-   
-  int16_t raw = (data[0] << 8) | data[1] ;
-  
-  return raw;
+    return readWord(TMP007_SENSOR_VOLT);
 }
  
 //--------------------------------------------------------------------------------
@@ -115,8 +106,7 @@
  
   // Equations for calculating temperature found in section 7.3.4 in the user guide
   double tdie_tref = Tdie - TMP007_TREF;
-  double S = (1 + TMP007_A1*tdie_tref + 
-      TMP007_A2*tdie_tref*tdie_tref);
+  double S = (1 + TMP007_A1*tdie_tref + TMP007_A2*tdie_tref*tdie_tref);
   S *= TMP007_S0;
   S /= 10000000;
   S /= 10000000;