Maxim Integrated / MAX30205_Clinical_Temperature_Sensor

Maxim Integrated MAX30205 C, C++ source code driver software: MAX30205 is accurate to +-0.1°C over the range of 37.0°C to 39.0°C. One-shot, shutdown modes are available for reduced power usage. Thermostat thresholds allow for temperature hysteresis or for alarm settings. The MAX30205 is available in a compact 3x3 mm, 8-pin TDFN package. Operating supply voltage range is 2.7V to 3.3V. Typical applications are for clinical digital thermometers, thermostats with hysteresis, and temperature alarms.

Dependents:   MAX30205_Human_Body_Temperature_Sensor

Diff: MAX30205.cpp

Revision:
1:d4271ef9f37f
Parent:
0:cdad7a9ef486
Child:
2:a659724f496a
diff -r cdad7a9ef486 -r d4271ef9f37f MAX30205.cpp
--- a/MAX30205.cpp	Mon Apr 03 23:11:58 2017 +0000
+++ b/MAX30205.cpp	Thu Apr 06 00:05:03 2017 +0000
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
+ * Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -30,40 +30,115 @@
  * ownership rights.
  *******************************************************************************
  */
+ 
+ 
 #include "MAX30205.h"
 
+
 //******************************************************************************
-MAX30205::MAX30205(PinName sda, PinName scl, uint8_t slaveAddress): 
-m_i2c(sda, scl), m_writeAddress(slaveAddress << 1), m_readAddress((slaveAddress << 1) | 1)
+MAX30205::MAX30205(PinName sda, PinName scl, uint8_t slaveAddress, PinName os): 
+m_i2c(sda, scl), m_writeAddress(slaveAddress << 1), 
+m_readAddress((slaveAddress << 1) | 1), m_os(os, PullUp)
 {
 }
 
+
 //******************************************************************************
-MAX30205::MAX30205(I2C& i2c, uint8_t slaveAddress): 
-m_i2c(i2c), m_writeAddress(slaveAddress << 1), m_readAddress((slaveAddress << 1) | 1)
+MAX30205::MAX30205(I2C &i2c, uint8_t slaveAddress, PinName os): 
+m_i2c(i2c), m_writeAddress(slaveAddress << 1), 
+m_readAddress((slaveAddress << 1) | 1), m_os(os, PullUp)
 {
 }
 
+
 //******************************************************************************
 MAX30205::~MAX30205(void) 
 {
   //empty block
 }
 
+
 //******************************************************************************
-int32_t MAX30205::reg_write(Registers reg, uint8_t value) 
+int32_t MAX30205::readTemperature(uint16_t &value) 
+{
+  return readRegister(MAX30205::Temperature, value);
+}
+
+
+//******************************************************************************
+int32_t MAX30205::readConfiguration(Config &config)
 {
-  int32_t result;
-  
-  char cmdData[2] = {reg, value};
-  
-  result = m_i2c.write(m_writeAddress, cmdData, 2);
-  
-  return result;
+    uint16_t data;
+    
+    int32_t result = readRegister(MAX30205::Configuration, data);
+    if(result == 0)
+    {
+        config.all = (0x00FF & data);
+    }
+    
+    return result;
+    
+}
+
+
+//******************************************************************************    
+int32_t MAX30205::writeConfiguration(const Config config)
+{
+    uint16_t local_config = (0x00FF & config.all);
+    
+    return writeRegister(MAX30205::Configuration, local_config);
+}
+
+
+//******************************************************************************
+int32_t MAX30205::readTHYST(uint16_t &value) 
+{
+  return readRegister(MAX30205::THYST, value);
 }
 
+
 //******************************************************************************
-int32_t MAX30205::reg_write16(Registers reg, uint16_t value) 
+int32_t MAX30205::writeTHYST(uint16_t value) 
+{
+  return writeRegister(MAX30205::THYST, value);
+}
+
+
+//******************************************************************************
+int32_t MAX30205::readTOS(uint16_t &value)
+{
+    return readRegister(MAX30205::TOS, value);
+}
+
+
+//******************************************************************************
+int32_t MAX30205::writeTOS(const uint16_t value)
+{
+    return writeRegister(MAX30205::TOS, value);
+}
+
+
+//******************************************************************************
+float MAX30205::toCelsius(uint32_t rawTemp) 
+{
+  float val1, val2;
+  
+  val1 = static_cast<float>(rawTemp >> 8);
+  val2 = static_cast<float>(rawTemp & 0xFF);
+  
+  return(val2 + (val1 / 256.0F));
+}
+
+
+//******************************************************************************
+float MAX30205::toFahrenheit(float temperatureC) 
+{
+  return((temperatureC * 1.8F) + 32.0f);
+}
+
+
+//******************************************************************************
+int32_t MAX30205::writeRegister(Registers reg, uint16_t value) 
 {
   int32_t result;
   
@@ -76,29 +151,9 @@
   return result;
 }
 
-//******************************************************************************
-int32_t MAX30205::reg_read(Registers reg, uint8_t& value) 
-{
-  int32_t result;
-  
-  char cmdData[1] = {reg};
-  char readData;
-
-  result = m_i2c.write(m_writeAddress, cmdData, 1);
-  if(result == 0)
-  {
-      result = m_i2c.read(m_readAddress, &readData, 1);
-      if(result == 0)
-      {
-          value = readData;
-      }
-  }
-  
-  return result;
-}
 
 //******************************************************************************
-int32_t MAX30205::reg_read16(Registers reg, uint16_t& value) 
+int32_t MAX30205::readRegister(Registers reg, uint16_t &value) 
 {
   int32_t result;
   
@@ -117,40 +172,3 @@
   
   return result;
 }
-
-//******************************************************************************
-int32_t MAX30205::readTemperature(uint16_t& value) 
-{
-  int32_t result = reg_read16(MAX30205::Temperature, value);
-  
-  return result;
-}
-
-//******************************************************************************
-float MAX30205::toCelsius(uint32_t rawTemp) 
-{
-  float val1, val2;
-  
-  val1 = static_cast<float>(rawTemp >> 8);
-  val2 = static_cast<float>(rawTemp & 0xFF);
-  
-  return(val2 + (val1 / 256.0F));
-}
-
-//******************************************************************************
-float MAX30205::toFahrenheit(float temperatureC) 
-{
-  return((temperatureC * 1.8F) + 32.0f);
-}
-
-//******************************************************************************
-int32_t MAX30205::reg_THYST_Read(uint16_t& value) 
-{
-  return reg_read16(MAX30205::THYST, value);
-}
-
-//******************************************************************************
-int32_t MAX30205::reg_THYST_Write(uint16_t value) 
-{
-  return reg_write16(MAX30205::THYST, value);
-}