Diff: MAX30101.cpp

Revision:

2:0db1f3bec727

Parent:

1:9e2a3b4a24c7

Child:

3:a2effad05c99

diff -r 9e2a3b4a24c7 -r 0db1f3bec727 MAX30101.cpp
--- a/MAX30101.cpp	Thu Apr 13 23:46:22 2017 +0000
+++ b/MAX30101.cpp	Mon May 01 21:00:34 2017 +0000
@@ -90,105 +90,172 @@
 //*****************************************************************************
 int32_t MAX30101::setFIFOConfiguration(const FIFO_Configuration_u config)
 {
-    return -1;
+    return writeRegister(FIFO_Configuration, config.all);
 }
     
 
 //*****************************************************************************
 int32_t MAX30101::getFIFOConfiguration(FIFO_Configuration_u &config)
 {
-    return -1;
+    return readRegister(FIFO_Configuration, config.all);
 }
     
     
 //*****************************************************************************
 int32_t MAX30101::setModeConfiguration(const ModeConfiguration_u config)
 {
-    return -1;
+    return writeRegister(ModeConfiguration, (config.all & 0xC7));
 }
     
 
 //*****************************************************************************    
 int32_t MAX30101::getModeConfiguration(ModeConfiguration_u &config)
 {
-    return -1;
+    return readRegister(ModeConfiguration, config.all);
 }   
     
 
 //*****************************************************************************    
 int32_t MAX30101::setSpO2Configuration(const SpO2Configuration_u config)
 {
-    return -1;
+    return writeRegister(SpO2Configuration, (config.all & 0x7F));
 }   
 
 
 //*****************************************************************************    
 int32_t MAX30101::getSpO2Configuration(SpO2Configuration_u &config)
 {
-    return -1;
+    return readRegister(SpO2Configuration, config.all);
 }
 
 
 //*****************************************************************************  
 int32_t MAX30101::setLEDPulseAmplitude(Registers_e reg, const uint8_t amp)
 {
-    return -1;
+    return writeRegister(reg, amp);
 }
 
 
 //*****************************************************************************  
 int32_t MAX30101::getLEDPulseAmplitude(Registers_e reg, uint8_t &amp)
 {
-    return -1;
+    return readRegister(reg, amp);
 }
 
 
 //*****************************************************************************  
 int32_t MAX30101::setMultiLEDModeControl(Registers_e reg, const ModeControlReg_u data)
 {
-    return -1;
+    return writeRegister(reg, data.all);
 }
  
     
 //*****************************************************************************  
 int32_t MAX30101::getMultiLEDModeControl(Registers_e reg, ModeControlReg_u &data)
 {
-    return -1;
+    return readRegister(reg, data.all);
 }
 
     
 //*****************************************************************************  
 int32_t MAX30101::getDieTemperature(uint16_t &data)
 {
-    return -1;
+    int32_t result = -1;
+    
+    //Die temp conversion time is 30ms
+    //ATTEMPTS > than 30ms at 100KHz SCL for getInterruptStatus call
+    const uint32_t ATTEMPTS = 100; 
+    uint32_t num_reads = 0;
+    
+    //local i2c transaction buffer
+    char local_data[2];
+    local_data[0] = DieTempConfig;
+    local_data[1] = 1;
+    
+    //initiate die temp conversion
+    result = m_i2cBus.write(I2C_W_ADRS, local_data, 2, true);
+    if(result == 0)
+    {
+        //object for holding status registers data
+        InterruptBitField_u status;
+        status.all = 0;
+        
+        //poll status registers until temp ready, or read fails
+        do
+        {
+            result = getInterruptStatus(status);
+            num_reads++;
+        }
+        while(!status.bits.die_temp && (result == 0) && (num_reads < ATTEMPTS));
+        
+        if(status.bits.die_temp)
+        {
+            //set pointer to temperature integer register
+            local_data[0] = DieTempInt;
+            result = m_i2cBus.write(I2C_W_ADRS, local_data, 1, true);
+            if(result == 0)
+            {
+                //read two bytes
+                result = m_i2cBus.read(I2C_R_ADRS, local_data, 2);
+                if(result == 0)
+                {
+                    //stuff data
+                    data = ( (local_data[0] << 8) | (local_data[1] << 4) );
+                    data = (data >> 4);
+                }
+            }
+        }
+        else
+        {
+            //if result equals 0 because num_reads exceeded ATTEMPTS,
+            //change result to -1.  Otherwise keep result's error code.
+            result = (result == 0) ? -1 : result;
+        }
+    }
+    return result;
 }
 
     
 //*****************************************************************************  
 int32_t MAX30101::getDieTemperatureC(float &data)
 {
-    return -1;
+    uint16_t raw_temp;
+    
+    int32_t result = getDieTemperature(raw_temp);
+    if(result == 0)
+    {
+        if(raw_temp & 0x0800)
+        {
+            data = ((0xFFFFF000 | raw_temp)/16.0F);
+        }
+        else
+        {
+            data = (raw_temp/16.0F);
+        }
+    }
+    
+    return result;
 }
 
 
 //*****************************************************************************  
 float MAX30101::celsius2fahrenheit(float c) 
 {
-    return 0.0F;
+    return ((1.8F * c) + 32.0F);
 }
     
 
 //*****************************************************************************     
 int32_t MAX30101::setProxIntThreshold(const uint8_t data)
 {
-    return -1;
+    return writeRegister(ProxIntThreshold, data);
 }
     
 
 //*****************************************************************************     
 int32_t MAX30101::getProxIntThreshold(uint8_t &data)
 {
-    return -1;
+    return readRegister(ProxIntThreshold, data);
 }