Diff: ds2782.cpp

Revision:

0:e6d413e57654

Child:

1:7cd80eb4df4c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ds2782.cpp	Sun Nov 30 23:23:42 2014 +0000
@@ -0,0 +1,106 @@
+#include "ds2782.h"
+
+
+DS2782::DS2782(PinName sda, PinName scl,int i2cFrequencyHz,uint8_t address):mI2c(sda,scl),mI2cAddr(address){
+    
+    mI2c.frequency(i2cFrequencyHz);
+    mTemperature=0;
+}   
+    
+    
+bool DS2782::initDS2782(void){
+     
+     return true;
+}
+
+//write data to the sensor
+bool DS2782::write(uint8_t regAddress, uint8_t* data,int dataLength)
+{
+    uint8_t tempBuf[dataLength+1];
+    tempBuf[0]=regAddress;
+    memcpy(&(tempBuf[1]),data,dataLength);
+    return mI2c.write(mI2cAddr,(char*)tempBuf,dataLength+1)==0;
+
+}
+
+//read data from the sensor
+bool DS2782::read(uint8_t regAddress, uint8_t *data,int dataLength)
+{
+    mI2c.write(mI2cAddr,(char*)&regAddress,1,true);
+    return (mI2c.read(mI2cAddr,(char*)data,dataLength)==0);
+}
+
+bool DS2782::readTemperature(void)
+{  
+   uint8_t rawData[2];
+   uint16_t rawTemp=0;
+   if(!read(TEMP_MSB_REG, rawData,2)) return false;
+      rawTemp= (((rawData[0]&~(1<<7))<<3)|((rawData[1]>>5)&0xF));
+      mTemperature = (float)(rawTemp*0.125);
+   return true;
+}
+
+float DS2782::getTemperature(void)
+{
+    return mTemperature;
+}
+
+
+bool DS2782::readCurrent(void){
+
+   uint8_t rawData[2];
+   uint16_t rawRes=0;
+   if(!read(CURRENT_MSB_REG, rawData,2)) return false;
+      rawRes= get16BitData(rawData[0],rawData[1]);
+      //rawRes&=~(1<<15);
+    if(rawRes &0x8000){
+      mCurrent = (float)(rawRes-65536)*0.07813;
+    }
+    else 
+      //mCurrent = (float)(rawRes-32768)*0.07813;
+      mCurrent = (float)(rawRes)*0.07813;
+   return true;
+}
+
+float DS2782::getCurrent(void)
+{
+    return mCurrent;
+}
+
+
+
+bool DS2782::readVoltage(void){
+
+   uint8_t rawData[2];
+   uint16_t rawVolt=0;
+   if(!read(VOLT_MSB_REG, rawData,2)) return false;
+      rawVolt= (((rawData[0]&~(1<<7))<<3)|((rawData[1]>>5)&0xF));
+      mVoltage= (float)(rawVolt*4.88);
+   return true;
+}
+
+float DS2782::getVoltage(void)
+{
+    return mVoltage;
+}
+
+
+
+
+
+float DS2782::readTest(void){
+
+   uint8_t rawData[2];
+   uint16_t rawRes=0;
+   /*if(!read(ACR_MSB_REG, rawData,2)) return false;
+      rawRes= get16BitData(rawData[0],rawData[1]);
+      */
+    /*if(rawRes &0x8000){
+      return ((float)(rawRes-65536)*0.07813);
+    }
+    else 
+    */
+    if(!read(RARC_REG, rawData,1)) return false;
+      rawRes= get16BitData(rawData[0],rawData[1]);
+    return ((float)(rawData[0]*0.3906));
+}