Diff: copy_main.cpp

Revision:

20:dba07b7d9675

Child:

21:d96ef380a5d3

diff -r 0799d6348449 -r dba07b7d9675 copy_main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/copy_main.cpp	Mon Dec 11 00:26:24 2017 +0000
@@ -0,0 +1,665 @@
+#include <stdlib.h>
+#include <iostream>
+#include <string.h>
+#include <mbed.h>
+#include "dot_util.h"
+#include "RadioEvent.h"
+#include "itoa.h"
+
+#define BUFFER_SIZE 10
+
+ 
+/////////////////////////////////////////////////////////////////////////////
+// -------------------- DOT LIBRARY REQUIRED ------------------------------//
+// * Because these example programs can be used for both mDot and xDot     //
+//     devices, the LoRa stack is not included. The libmDot library should //
+//     be imported if building for mDot devices. The libxDot library       //
+//     should be imported if building for xDot devices.                    //
+// * https://developer.mbed.org/teams/MultiTech/code/libmDot-dev-mbed5/    //
+// * https://developer.mbed.org/teams/MultiTech/code/libmDot-mbed5/        //
+// * https://developer.mbed.org/teams/MultiTech/code/libxDot-dev-mbed5/    //
+// * https://developer.mbed.org/teams/MultiTech/code/libxDot-mbed5/        //
+/////////////////////////////////////////////////////////////////////////////
+
+
+/////////////////////////////////////////////////////////////
+// * these options must match between the two devices in   //
+//   order for communication to be successful
+//-------------------MDOT variables------------------------//
+/////////////////////////////////////////////////////////////
+static uint8_t network_address[] = { 0x00, 0x11, 0x22, 0x33 };
+static uint8_t network_session_key[] = { 0x00, 0x11, 0x22, 0x33, 0x00, 0x11, 0x22, 0x33, 0x00, 0x11, 0x22, 0x33, 0x00, 0x11, 0x22, 0x33 };
+static uint8_t data_session_key[] = { 0x33, 0x22, 0x11, 0x00, 0x33, 0x22, 0x11, 0x00, 0x33, 0x22, 0x11, 0x00, 0x33, 0x22, 0x11, 0x00 };
+
+mDot* dot = NULL;
+lora::ChannelPlan* plan = NULL;
+//--------------End of MDOT variables-------------------//
+
+Serial pc(USBTX, USBRX);
+Ticker Periodic;
+
+// ADXL372 Slave I2C
+I2C ADXL372(I2C_SDA, I2C_SCL);  // (D14,D15) (MISO, CS)
+
+// ADT7410 Temperature
+I2C ADT7410(I2C_SDA, I2C_SCL);      // Attempt at making I2C connection to slaves (D14,D15)
+InterruptIn ADT7410_Int(D2);    // Allow this pin for ADT7410 Interrupt critical temperature notice
+
+// DS7505s Temperature
+I2C DS7505(I2C_SDA, I2C_SCL);      // Attempt at making I2C connection to slaves (D14,D15)
+
+// Create reocurring interrupt function that could be used to periodically take temperatures
+// Not working right now due to some mutex initialize error
+// Suspect that it is due to it having be a RTOS task thing
+// Should probably go back to using an in processor timer interrupt instead of mbed
+
+const int ADT7410_Address_7BIT = 0x49;  // A0 set HIGH and A1 set LOW
+const int ADT7410_Address_8BIT = ADT7410_Address_7BIT << 1; // Shift 1 bit to left for R/~W bit, and basic I2C format
+
+const int ADXL372_Address_7bit = 0x1D;      // Address for the I2C if MISO pulled low, 0x53 if pulled high
+const int ADXL372_Address_8bit = ADXL372_Address_7bit << 1; // Same
+
+const int DS7505s_Address_7bit = 0x48;  // A0 set LOR, A1 set LOW, A2 set LOW
+const int DS7505s_Address_8bit = DS7505s_Address_7bit << 1; // Same
+
+
+int regAddress; // Used by all sensors
+
+/*
+ *  Variables used for ADT7410 Temperature
+ */
+// Points to the returned char pointer from called functions
+char * rawTempValues;           // Could change to uint8_t, same for other char pointers
+uint16_t convertedTempValue;    // Data values must be uint16_t for conversion and send prep
+uint16_t temperatureBuffer[BUFFER_SIZE];
+
+
+/*
+ *  Variables used for mDot
+ */
+
+
+uint32_t tx_frequency;
+uint8_t tx_datarate;
+uint8_t tx_power;
+uint8_t frequency_band;
+
+
+/*
+ *  Variables used for ADXL372 Accelerometer
+ */
+char *accelValues;
+char Xmsb;  // Gets most significant byte
+char Xlsb;  // Gets least significant byte
+char Ymsb;
+char Ylsb;
+char Zmsb;
+char Zlsb;
+uint16_t XData;
+uint16_t YData;
+uint16_t ZData;
+
+uint16_t XDataInterrupt[BUFFER_SIZE];
+uint16_t YDataInterrupt[BUFFER_SIZE];
+uint16_t ZDataInterrupt[BUFFER_SIZE];
+
+
+
+/*
+ *  Variables used for interrupt triggers
+ */
+bool takeTemperature = false;   // Trigger temperature reading
+bool takeAccelerometer = false; // Trigger accelerometer reading
+bool periodicReadings = false;  // Trigger reading both accelerometer and temperature
+
+/*
+ *  Prototype functions
+ */
+ 
+char twosComplementConversion(char value);
+
+void ADXL372Initialize(void);
+void ADXL372Reset(void);
+void I2CSelfTest(void);
+void accelerometerI2CWrite(int hexAddress, int hexData);
+char * accelerometerI2CRead(int hexAddress);
+
+void ADT7410Initialize(void);
+void ADT7410Write(unsigned char registerAddress, unsigned char data);
+char * ADT7410Read(int hex);
+
+
+/*
+ *  Interrupt functions
+ */
+void CriticalTemperatureInterrupt(void){   
+    takeTemperature = true; // Take temperature because something happened
+}
+
+void CriticalAccelerometerInterrupt(void){
+    takeAccelerometer = true;   // Take accelerometer because something happened
+}
+
+void takePeriodicReading(void){
+        pc.printf("Periodic Reading\n\r");
+        /*  
+         *  Taking accelerometer data
+         */
+        regAddress = 0x08;  // This is the register address for XData
+        accelValues = accelerometerI2CRead(regAddress);
+        Xmsb = *(accelValues + 0);
+        Xlsb = *(accelValues + 1);
+        Ymsb = *(accelValues + 2);
+        Ylsb = *(accelValues + 3);
+        Zmsb = *(accelValues + 4);
+        Zlsb = *(accelValues + 5);
+        
+        XData = (Xmsb << 8 | Xlsb) >> 4;  // Combine two bytes into short int, remove last 4 flag bits
+        YData = (Ymsb << 8 | Ylsb) >> 4;
+        ZData = (Zmsb << 8 | Zlsb) >> 4;
+        
+        XData = twosComplementConversion(XData);
+        YData = twosComplementConversion(YData);
+        ZData = twosComplementConversion(ZData);
+        
+        /*
+         *  Taking temperature data
+         */
+        regAddress = 0x00;
+        rawTempValues = ADT7410Read(regAddress);
+        convertedTempValue = ((*(rawTempValues + 0) << 8) | *(rawTempValues + 1)) >> 3; // Combine the two bytes into 
+                                                                                        // a short int variable(16 bits), remove last 3 bits
+        if(convertedTempValue & 0x8000){
+                
+        }
+        pc.printf("Accelerometer::: ");
+        pc.printf("X: 0x%x | Y: 0x%x | Z: 0x%x\n\r", XData, YData, ZData);
+        pc.printf("Temperature::: ");
+        pc.printf("Celsius: 0x%x\n\r", convertedTempValue);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+/*                              _     
+               ____ ___  ____ _(_)___ 
+              / __ `__ \/ __ `/ / __ \
+             / / / / / / /_/ / / / / /
+            /_/ /_/ /_/\__,_/_/_/ /_/ 
+                          
+ *//////////////////////////////////////////////////////////////////////////////
+int main(void)
+{
+    // Custom event handler for automatically displaying RX data
+    //interruptEverything.attach(&interruptReadTemperature, 7.0);
+    RadioEvent events;
+    // Change baud rate in serial terminal to this value
+    pc.baud(115200);
+    ADXL372.frequency(300000);  // I2C devices are connected to the same clock
+    ADT7410.frequency(300000);  // Redundant but whatever
+    ADT7410_Int.rise(&CriticalTemperatureInterrupt);
+    
+    
+    mts::MTSLog::setLogLevel(mts::MTSLog::TRACE_LEVEL);
+    
+    // Sometimes when calling this, it creates error: type specifier expected
+    // Even with identical include files I would get this in another workspace.
+    plan = new lora::ChannelPlan_US915();
+
+    logInfo("Now asserting");
+    assert(plan);
+
+    // Careful when using this. The production ready libmdot-mbed5 has a void constructor
+    // Therefore, can only use the libmDot-dev-mbed5 version, for now.
+    dot = mDot::getInstance(plan);
+    assert(dot);
+
+    logInfo("mbed-os library version: %d", MBED_LIBRARY_VERSION);
+
+    // start from a well-known state
+    logInfo("defaulting Dot configuration");
+    dot->resetConfig();
+
+    // make sure library logging is turned on
+    dot->setLogLevel(mts::MTSLog::INFO_LEVEL);
+
+    // attach the custom events handler
+    dot->setEvents(&events);
+
+    // update configuration if necessary
+    if (dot->getJoinMode() != mDot::PEER_TO_PEER) {
+        logInfo("changing network join mode to PEER_TO_PEER");
+        if (dot->setJoinMode(mDot::PEER_TO_PEER) != mDot::MDOT_OK) {
+            logError("failed to set network join mode to PEER_TO_PEER");
+        }
+    }
+    
+    /*
+     *  Get the Frequency and then choose transfer frequency, datarate, and power accordingly
+     *
+     */
+    ////////////////////////////////////////////////////////////////////////////////
+    frequency_band = dot->getFrequencyBand();
+    switch (frequency_band) {
+        case lora::ChannelPlan::EU868_OLD:
+        case lora::ChannelPlan::EU868:
+            // 250kHz channels achieve higher throughput
+            // DR_6 : SF7 @ 250kHz
+            // DR_0 - DR_5 (125kHz channels) available but much slower
+            tx_frequency = 869850000;
+            tx_datarate = lora::DR_6;
+            // the 869850000 frequency is 100% duty cycle if the total power is under 7 dBm - tx power 4 + antenna gain 3 = 7
+            tx_power = 4;
+            break;
+
+        case lora::ChannelPlan::US915_OLD:
+        case lora::ChannelPlan::US915:
+        case lora::ChannelPlan::AU915_OLD:
+        case lora::ChannelPlan::AU915:
+            // 500kHz channels achieve highest throughput
+            // DR_8 : SF12 @ 500kHz
+            // DR_9 : SF11 @ 500kHz
+            // DR_10 : SF10 @ 500kHz
+            // DR_11 : SF9 @ 500kHz
+            // DR_12 : SF8 @ 500kHz
+            // DR_13 : SF7 @ 500kHz
+            // DR_0 - DR_3 (125kHz channels) available but much slower
+            tx_frequency = 915500000;
+            tx_datarate = lora::DR_13;
+            // 915 bands have no duty cycle restrictions, set tx power to max
+            tx_power = 20;
+            break;
+
+        case lora::ChannelPlan::AS923:
+        case lora::ChannelPlan::AS923_JAPAN:
+            // 250kHz channels achieve higher throughput
+            // DR_6 : SF7 @ 250kHz
+            // DR_0 - DR_5 (125kHz channels) available but much slower
+            tx_frequency = 924800000;
+            tx_datarate = lora::DR_6;
+            tx_power = 16;
+            break;
+
+        case lora::ChannelPlan::KR920:
+            // DR_5 : SF7 @ 125kHz
+            tx_frequency = 922700000;
+            tx_datarate = lora::DR_5;
+            tx_power = 14;
+            break;
+
+        default:
+            while (true) {
+                logFatal("no known channel plan in use - extra configuration is needed!");
+                wait(5);
+            }
+            break;
+    }
+    /////////////////////////////////////////////////////////////////////////////////////
+
+    // in PEER_TO_PEER mode there is no join request/response transaction
+    // as long as both Dots are configured correctly, they should be able to communicate
+    update_peer_to_peer_config(network_address, network_session_key, data_session_key, tx_frequency, tx_datarate, tx_power);
+    
+    // save changes to configuration
+    logInfo("saving configuration");
+    if (!dot->saveConfig()) {
+        logError("failed to save configuration");
+    }
+
+    // Display configuration
+    // It's gonna output a lot of information onto the Serial Terminal
+    display_config();
+    
+    
+    ADT7410Initialize();
+    ADXL372Initialize();
+    
+    //Periodic.attach(&takePeriodicReading,3);
+    
+    while(1){
+        pc.printf("Regular looped reading ");
+        /*
+         *  Taking accelerometer data
+         */
+        regAddress = 0x08;  // This is the register address for XData
+        accelValues = accelerometerI2CRead(regAddress);
+        Xmsb = *(accelValues + 0);
+        Xlsb = *(accelValues + 1);
+        Ymsb = *(accelValues + 2);
+        Ylsb = *(accelValues + 3);
+        Zmsb = *(accelValues + 4);
+        Zlsb = *(accelValues + 5);
+        
+        XData = (Xmsb << 8 | Xlsb) >> 4;  // Combine two bytes into short int, remove last 4 flag bits
+        YData = (Ymsb << 8 | Ylsb) >> 4;
+        ZData = (Zmsb << 8 | Zlsb) >> 4;
+        
+        XData = twosComplementConversion(XData);
+        YData = twosComplementConversion(YData);
+        ZData = twosComplementConversion(ZData);
+        
+        /*
+         *  Taking temperature data
+         */
+        regAddress = 0x00;
+        rawTempValues = ADT7410Read(regAddress);
+        convertedTempValue = ((*(rawTempValues + 0) << 8) | *(rawTempValues + 1)) >> 3; // Combine the two bytes into 
+                                                                                        // a short int variable(16 bits), remove last 3 bits
+        if(convertedTempValue & 0x8000){
+                
+        }
+        pc.printf("Accelerometer::: ");
+        pc.printf("X: 0x%x | Y: 0x%x | Z: 0x%x\n\r", XData, YData, ZData);
+        pc.printf("Temperature::: ");
+        pc.printf("Celsius: 0x%x\n\r", convertedTempValue);
+        
+        if(takeAccelerometer || takeAccelerometer){
+            pc.printf("INTERRUPTEDDDDDDDD: ");
+            if(takeAccelerometer) pc.printf("Temperature triggered\n\r");
+            else if(takeAccelerometer) pc.printf("AccelerometerTriggered\n\r");
+            
+            for(int i = 0; i < BUFFER_SIZE; ++i){
+                /*
+                *   Taking accelerometer data
+                */
+                regAddress = 0x08;  // This is the register address for XData
+                accelValues = accelerometerI2CRead(regAddress);
+                Xmsb = *(accelValues + 0);
+                Xlsb = *(accelValues + 1);
+                Ymsb = *(accelValues + 2);
+                Ylsb = *(accelValues + 3);
+                Zmsb = *(accelValues + 4);
+                Zlsb = *(accelValues + 5);
+    
+                XDataInterrupt[i] = (Xmsb << 8 | Xlsb) >> 4;  // Combine two bytes into short int, remove last 4 flag bits
+                YDataInterrupt[i] = (Ymsb << 8 | Ylsb) >> 4;
+                ZDataInterrupt[i] = (Zmsb << 8 | Zlsb) >> 4;
+    
+                XDataInterrupt[i] = twosComplementConversion(XDataInterrupt[i]);
+                YDataInterrupt[i] = twosComplementConversion(YDataInterrupt[i]);
+                ZDataInterrupt[i] = twosComplementConversion(ZDataInterrupt[i]);
+    
+                /*
+                *   Taking temperature data
+                */
+                regAddress = 0x00;
+                rawTempValues = ADT7410Read(regAddress);
+                temperatureBuffer[i] = ((*(rawTempValues + 0) << 8) | *(rawTempValues + 1)) >> 3; // Combine the two bytes into 
+                                                                                                // a short int variable(16 bits), remove last 3 bits    
+            }
+            
+            for(int i = 0; i < BUFFER_SIZE; ++i){
+                pc.printf("Accelerometer::: ");
+                pc.printf("X: 0x%x | Y: 0x%x | Z: 0x%x\n\r", XDataInterrupt[i], YDataInterrupt[i], ZDataInterrupt[i]);
+                pc.printf("Temperature::: ");
+                pc.printf("Celsius: 0x%x\n\r", temperatureBuffer[i]);   
+            }
+            wait(0.2);
+            takeAccelerometer = false;  // Flip back to no trigger
+            takeTemperature = false;    // Flip back to no trigger
+        }
+        
+        
+        
+    }
+    
+    return 0;
+}
+
+/*******************************************************************************
+ *  Not really used at the moment
+ *  Not really needed. But keep just in case because I don't want to rewrite it
+ ******************************************************************************/
+////////////////////////////////////////////////////////////////////////////////
+char twosComplementConversion(char value)
+{
+    /*
+     * Go from bit 0 to bit 7 and invert them
+     * Then finally add 1
+     */
+    char mask = value & 0x80;
+    if(mask == 0x80){   // Check for sign
+        value = ~value + 1;
+        return value;
+    } 
+    return value;
+}
+////////////////////////////////////////////////////////////////////////////////
+
+/*******************************************************************************
+ *  Initializes whatever settings you want for the accelerometer
+ *  Can change it to use the previous I2C write function instead of all this mess
+ *
+ ******************************************************************************/  
+////////////////////////////////////////////////////////////////////////////////
+void ADXL372Initialize(void){
+    pc.printf("Initializing ADXL372 accelerometer\n\r");
+    accelerometerI2CWrite(0x3F, 0x0F);  // Enable I2C highspeed,Low Pass, High pass and full bandwidth measurement mode
+    accelerometerI2CWrite(0x38, 0x01);  // Enable the High pass filter corner 1 at register 0x38
+/*     accelerometerI2CWrite(0x24, 0x01);  // X used for activity threshold
+    accelerometerI2CWrite(0x26, 0x01);  // Y used for activity threshold
+    accelerometerI2CWrite(0x28, 0x01);  // Z used for activity threshold  */
+    pc.printf("\n\n\r");
+}
+////////////////////////////////////////////////////////////////////////////////
+
+
+/*******************************************************************************
+ *  ADT7410 Initializing function
+ *  Make critical temperature 24 celsius
+ *  Make CRIT pin active high
+ ******************************************************************************/
+////////////////////////////////////////////////////////////////////////////////
+void ADT7410Initialize(void){
+    pc.printf("Initializing ADT7410 Temperature\n\r");
+    // Make critical temperature be 24 celsius
+    ADT7410Write(0x08, 0x01);   // MSB of Temperature Crit value
+    ADT7410Write(0x09, 0x80);   // LSB of Temperature Crit value
+    
+    // Make CRIT pin active high
+    ADT7410Write(0x03, 0x08);   // Turn INT HIGH, works for the interrupt pin
+    pc.printf("\n\n\r");
+}
+////////////////////////////////////////////////////////////////////////////////
+
+/*******************************************************************************
+ *  ADXL372 reset function
+ *  Resets all registers and settings back to default
+ *  Basically the same as the previous ADXL372 I2C write function
+ *
+ ******************************************************************************/
+////////////////////////////////////////////////////////////////////////////////
+void ADXL372Reset(void){
+    int flag;
+//--------- One full writing cycle for ADXL372 for Z Enable ------------------//
+/*    '0' - NAK was received
+ *    '1' - ACK was received, <---- This good
+ *    '2' - timeout
+ */
+    ADXL372.start();
+    flag = ADXL372.write(ADXL372_Address_8bit | 0);
+    if(flag == 1)
+    {
+        //pc.printf("Write to I2C address success\n\r");
+        
+        flag = ADXL372.write(0x41);
+        if(flag == 1)
+        {
+            //pc.printf("Write to 0x41 register address success\n\r");
+            flag = ADXL372.write(0x52);                             // Set bit 0
+            if(flag == 1)
+            {
+                pc.printf("Everything has been reset\n\r");
+                ADXL372.stop();
+            }
+        }
+    }
+    else ADXL372.stop();
+// ---------------- End of writing cycle --------------------------//
+}
+////////////////////////////////////////////////////////////////////////////////
+
+/*
+ *
+ *  Self-test to see if the accelerometer is working as intended
+ *  Wait 300 ms.
+ *  Check bit 2 for a 1 for success. Bit 1 for completion of self-test.    
+ *  Returns whole register
+ */
+////////////////////////////////////////////////////////////////////////////////
+void I2CSelfTest(void){
+    char *result;
+    uint8_t check;
+    accelerometerI2CWrite(0x3F, 0x0F);
+    accelerometerI2CWrite(0x40, 0x01);
+    wait(0.3);
+    result = accelerometerI2CRead(0x40);
+    check = result[0];
+    if(check & 0x04){
+        pc.printf("Passed\n\r");
+    }else {pc.printf("FAILED\n\r");}
+}
+////////////////////////////////////////////////////////////////////////////////
+
+/*******************************************************************************
+ *                                                                             
+ *  I2C function for the the ADXL372 accelerometer for a write sequence
+ *  Param:
+ *      hexAddress: Pass the hexadecimal value for what register you want
+ *      hexData: Pass the hexadecimal value for what data you want to send
+ *               i.e. hexadecimal represenatation of certain bits
+ *  Returns from mbed library write function            
+ *      0: NAK was reveived
+ *      1: ACK was received <---- Good for us
+ *      2: Timeout     
+ ******************************************************************************/
+////////////////////////////////////////////////////////////////////////////////
+void accelerometerI2CWrite(int hexAddress, int hexData){
+
+    int flag;
+    int registerAddress = hexAddress;
+    int data = hexData;
+    
+    ADXL372.start();
+    flag = ADXL372.write(ADXL372_Address_8bit);
+    if(flag == 1)
+    {
+        //pc.printf("Write to I2C address success\n\r");
+        wait(0.1);
+        flag = ADXL372.write(registerAddress);
+        if(flag == 1)
+        {
+            //pc.printf("Write to register 0x%x address success\n\r", registerAddress);
+            flag = ADXL372.write(data);
+            if(flag == 1)
+            {
+                pc.printf("Writing data 0x%x to register address 0x%d success\n\r", data, registerAddress);
+                ADXL372.stop();
+                return;
+            }else {ADXL372.stop();} 
+        }else {ADXL372.stop();}
+    }else ADXL372.stop();
+   
+}
+////////////////////////////////////////////////////////////////////////////////
+
+/*******************************************************************************
+ *  I2C read sequence for the accelerometer
+ *  Param:
+ *      hexAddress: pass the hexadecimal representation of desired Register address
+ *  Return:
+ *      Char pointer to the array of read data. 
+ *
+ *  Right now it works only for the XData, YData, ZData because I wrote it to read
+ *  6 bytes(6 registers).
+ *  Should change it to be 1 byte at a time
+ ******************************************************************************/
+////////////////////////////////////////////////////////////////////////////////
+char * accelerometerI2CRead(int hexAddress){
+    char accelData[6];
+    char registerAddress[1];
+    registerAddress[0] = hexAddress;
+    
+    // Perform mbed's way sending a start bit, then device address[r/~w], and then the register address
+    // Also if it succeeds, continue to the next operation
+    if(ADXL372.write(ADXL372_Address_8bit, registerAddress, 1) == 0){
+        
+        // If previous sequence works, get 6 bytes into char array accelData
+        // Char array because it uses 1 byte(8bits)
+        // Should probably change it to uint8_t type
+        if(ADXL372.read(ADXL372_Address_8bit, accelData, 6) == 0){
+            return accelData;
+        }else pc.printf("Failed to read\n\r");
+    }else pc.printf("Failed to write\n\r");
+    return 0; // Only if it fails completely 
+}
+////////////////////////////////////////////////////////////////////////////////
+
+
+
+
+/*******************************************************************************
+ *  Performs one byte write I2C protocol
+ *  PARAM:
+ *      registerAddress: register you want access to in device, one byte char hex format
+ *      data: one byte data that you want to write to device register
+ *  Return results from mbed library function:
+ *      0: failure at writing i2c address
+ *      1: successful write
+ *      2: failure at writing data
+ *      
+ ******************************************************************************/
+////////////////////////////////////////////////////////////////////////////////
+void ADT7410Write(unsigned char registerAddress, unsigned char data){
+    int flag;
+    ADT7410.start();
+    flag = ADT7410.write(ADT7410_Address_8BIT);
+    if(flag == 1)
+    {
+        
+        wait(0.1);
+        flag = ADT7410.write(registerAddress);
+        if(flag == 1)
+        {
+           
+            flag = ADT7410.write(data);
+            if(flag == 1)
+            {
+                pc.printf("Writing data 0x%x to register address 0x%x success\n\r", data, registerAddress);
+                ADT7410.stop();
+                
+            }else {ADT7410.stop();} 
+        }else {ADT7410.stop();} 
+    }else ADT7410.stop();
+       
+    
+}
+////////////////////////////////////////////////////////////////////////////////
+
+
+/*******************************************************************************
+ *  I2C Read function for ADT7410 Temperature sensor
+ *  Param:
+ *      hex: hexadecimal representation for desired register
+ *  Return:
+ *      Char pointer to the array of data values.
+ *  Could also change from a char pointer to a uint8_t pointer.
+ *
+ ******************************************************************************/
+////////////////////////////////////////////////////////////////////////////////
+char * ADT7410Read(int hex){
+    //short int convertedVal;
+    char data[2] = {0, 0};
+    char cmd[1];
+    cmd[0] = hex;
+    //pc.printf("Register Addres is: %x \n\r", cmd[0]); 
+    if(ADT7410.write(ADT7410_Address_8BIT, cmd,1) == 0){
+        if(ADT7410.read(ADT7410_Address_8BIT, data, 2) == 0){
+            
+            return data;
+            //return (data[0] << 8 | data[1])>>3;     // Explained here: https://stackoverflow.com/a/141576 SOOO GREAT
+            
+        }else {pc.printf("Failed to read \n\r"); return data;}
+    }else {pc.printf("Failed to write \n\r"); return data;}
+    
+}
+////////////////////////////////////////////////////////////////////////////////
+