Revision 0:cdad7a9ef486, committed 2017-04-03

Comitter:

j3

Date:

Mon Apr 03 23:11:58 2017 +0000

Child:

1:d4271ef9f37f

Commit message:

Init commit, stand alone lib separated from HSP.

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MAX30205.cpp	Mon Apr 03 23:11:58 2017 +0000
@@ -0,0 +1,156 @@
+/*******************************************************************************
+ * Copyright (C) 2016 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"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+ * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Maxim Integrated
+ * Products, Inc. shall not be used except as stated in the Maxim Integrated
+ * Products, Inc. Branding Policy.
+ *
+ * The mere transfer of this software does not imply any licenses
+ * of trade secrets, proprietary technology, copyrights, patents,
+ * trademarks, maskwork rights, or any other form of intellectual
+ * property whatsoever. Maxim Integrated Products, Inc. retains all
+ * 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(I2C& i2c, uint8_t slaveAddress): 
+m_i2c(i2c), m_writeAddress(slaveAddress << 1), m_readAddress((slaveAddress << 1) | 1)
+{
+}
+
+//******************************************************************************
+MAX30205::~MAX30205(void) 
+{
+  //empty block
+}
+
+//******************************************************************************
+int32_t MAX30205::reg_write(Registers reg, uint8_t value) 
+{
+  int32_t result;
+  
+  char cmdData[2] = {reg, value};
+  
+  result = m_i2c.write(m_writeAddress, cmdData, 2);
+  
+  return result;
+}
+
+//******************************************************************************
+int32_t MAX30205::reg_write16(Registers reg, uint16_t value) 
+{
+  int32_t result;
+  
+  uint8_t hi = ((value >> 8) & 0xFF);
+  uint8_t lo = (value & 0xFF);
+  char cmdData[3] = {reg, hi, lo};
+  
+  result = m_i2c.write(m_writeAddress, cmdData, 3);
+  
+  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 result;
+  
+  char data[2];
+  char cmdData[1] = {reg};
+  
+  result = m_i2c.write(m_writeAddress, cmdData, 1);
+  if(result == 0)
+  {
+      result = m_i2c.read(m_readAddress, data, 2);
+      if (result == 0)
+      {
+          value = (data[0] << 8) + data[1];
+      }
+  }
+  
+  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);
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MAX30205.h	Mon Apr 03 23:11:58 2017 +0000
@@ -0,0 +1,159 @@
+/*******************************************************************************
+ * Copyright (C) 2016 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"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+ * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Maxim Integrated
+ * Products, Inc. shall not be used except as stated in the Maxim Integrated
+ * Products, Inc. Branding Policy.
+ *
+ * The mere transfer of this software does not imply any licenses
+ * of trade secrets, proprietary technology, copyrights, patents,
+ * trademarks, maskwork rights, or any other form of intellectual
+ * property whatsoever. Maxim Integrated Products, Inc. retains all
+ * ownership rights.
+ *******************************************************************************
+ */
+#ifndef __MAX30205_H_
+#define __MAX30205_H_
+
+#include "mbed.h"
+
+/**
+ * Driver for the MAX30205
+ *
+ * @code
+ * #include "mbed.h"
+ * #include "MAX30205.h"
+ *
+ * int main(void) 
+ * {
+ *     I2C i2c(I2C_SDA, I2C_SCL);
+ *     MAX30205 sensor(i2c);
+ *
+ *     //use sensor
+ * }
+ * @endcode
+ */
+
+class MAX30205
+{
+    
+public:
+    /// MAX30205 Register Addresses
+    enum Registers 
+    {
+        Temperature = 0x00,
+        Configuration = 0x01,
+        THYST = 0x02,
+        TOS = 0x03
+    };
+
+    /**
+    * @brief  Constructor using I2C PinNames
+    * @param sda - Pinname for sda
+    * @param scl - Pinname for scl
+    * @param slaveAddress - 7-bit I2C address
+    */
+    MAX30205(PinName sda, PinName scl, uint8_t slaveAddress);
+    
+    /**
+    * @brief  Constructor using reference to I2C object
+    * @param i2c - Reference to I2C object
+    * @param slaveAddress - 7-bit I2C address
+    */
+    MAX30205(I2C& i2c, uint8_t slaveAddress);
+
+    /** @brief Destructor */
+    ~MAX30205(void);
+
+    /** @brief Write register of device at slave address
+    * @param reg - Register address
+    * @param value - Value to write
+    * @return 0 on success, non-zero on failure
+    */
+    int32_t reg_write(Registers reg, uint8_t value);
+
+    /**
+    * @brief  Read register of device at slave address
+    * @param reg - Register address
+    * @param[out] value - Read data on success
+    * @return 0 on success, non-zero on failure
+    */
+    int32_t reg_read(Registers reg, uint8_t& value);
+
+    /**
+    * @brief Write a 16-bit value into device at slave address
+    * @param reg - Register address
+    * @param value - 16-bit value to write
+    * @return 0 on success, non-zero on failure
+    */
+    int32_t reg_write16(Registers reg, uint16_t value);
+
+    /**
+    * @brief Read a 16-bit value from a device at a slave address
+    * @param reg - Register address
+    * @param[out] value - Read data on success
+    * @return 0 on success, non-zero on failure
+    */
+    int32_t reg_read16(Registers reg, uint16_t& value);
+
+    /**
+    * @brief Read the temperature from the device into a 16 bit value
+    * @param[out] value - Raw temperature data on success
+    * @return 0 on success, non-zero on failure
+    */
+    int32_t readTemperature(uint16_t& value);
+
+    /**
+    * @brief Read the THYST value from a specified device instance
+    * @param[out] value - THYST register value on success
+    * @return 0 on success, non-zero on failure
+    */
+    int32_t reg_THYST_Read(uint16_t& value);
+
+    /**
+    * @brief Write the THYST to a device instance
+    * @param value - 16-bit value to write
+    * @return 0 on success, non-zero on failure
+    */
+    int32_t reg_THYST_Write(uint16_t value);
+
+    /**
+    * @brief Convert a raw temperature value into a float
+    * @param rawTemp - raw temperature value to convert
+    * @return the convereted value in degrees C
+    */
+    float toCelsius(uint32_t rawTemp);
+
+    /**
+    * @brief Convert the passed in temperature in C to Fahrenheit
+    * @param temperatureC Temperature in C to convert
+    * @returns Returns the converted Fahrenheit value
+    */
+    float toFahrenheit(float temperatureC);
+
+private:
+    /// I2C object
+    I2C m_i2c;
+    /// Device slave address
+    uint8_t m_writeAddress, m_readAddress;
+};
+
+#endif /* __MAX30205_H_ */