Lab 2 for ECE 2036 (work in progress)

Dependencies:   mbed 4DGL-uLCD-SE SDFileSystem PinDetect

Files at this revision

API Documentation at this revision

Comitter:
jmcmath
Date:
Mon Feb 11 04:31:13 2019 +0000
Commit message:
work in progress

Changed in this revision

4DGL-uLCD-SE.lib Show annotated file Show diff for this revision Revisions of this file
MMA8452.h Show annotated file Show diff for this revision Revisions of this file
PinDetect.lib Show annotated file Show diff for this revision Revisions of this file
SDFileSystem.lib Show annotated file Show diff for this revision Revisions of this file
Speaker.h Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/4DGL-uLCD-SE.lib	Mon Feb 11 04:31:13 2019 +0000
@@ -0,0 +1,1 @@
+https://mbed.org/users/4180_1/code/4DGL-uLCD-SE/#e39a44de229a
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MMA8452.h	Mon Feb 11 04:31:13 2019 +0000
@@ -0,0 +1,344 @@
+#pragma once
+ 
+// Authors: Ashley Mills, Nicholas Herriot
+/* Copyright (c) 2013 Vodafone, MIT License
+ *
+ * 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 THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ */
+ 
+// the SparkFun breakout board defaults to 1, set to 0 if SA0 jumper on the bottom of the board is set
+// see the Table 10. I2C Device Address Sequence in Freescale MMA8452Q pdf
+ 
+#include "mbed.h" 
+ 
+#define MMA8452_DEBUG 1
+ 
+// More info on MCU Master address can be found on section 5.10.1 of http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MMA8452Q
+#define SA0 1
+#if SA0
+  #define MMA8452_ADDRESS 0x3A // 0x1D<<1  // SA0 is high, 0x1C if low - 
+#else
+  #define MMA8452_ADDRESS 0x38 // 0x1C<<1
+#endif
+ 
+// Register descriptions found in section 6 of pdf
+#define MMA8452_STATUS 0x00        // Type 'read' : Status of the data registers
+#define MMA8452_OUT_X_MSB 0x01     // Type 'read' : x axis - MSB of 2 byte sample
+#define MMA8452_OUT_X_LSB 0x02     // Type 'read' : x axis - LSB of 2 byte sample
+#define MMA8452_OUT_Y_MSB 0x03     // Type 'read' : y axis - MSB of 2 byte sample
+#define MMA8452_OUT_Y_LSB 0x04     // Type 'read' : y axis - LSB of 2 byte sample
+#define MMA8452_OUT_Z_MSB 0x05     // Type 'read' : z axis - MSB of 2 byte sample
+#define MMA8452_OUT_Z_LSB 0x06     // Type 'read' : z axis - LSB of 2 byte sample
+ 
+// register definitions
+#define MMA8452_XYZ_DATA_CFG 0x0E
+ 
+#define MMA8452_SYSMOD 0x0B        // Type 'read' : This tells you if device is active, sleep or standy 0x00=STANDBY 0x01=WAKE 0x02=SLEEP
+#define MMA8452_WHO_AM_I 0x0D      // Type 'read' : This should return the device id of 0x2A
+ 
+#define MMA8452_PL_STATUS 0x10     // Type 'read' : This shows portrait landscape mode orientation
+#define MMA8452_PL_CFG 0x11        // Type 'read/write' : This allows portrait landscape configuration
+#define MMA8452_PL_COUNT 0x12      // Type 'read' : This is the portraint landscape debounce counter
+#define MMA8452_PL_BF_ZCOMP 0x13   // Type 'read' :
+#define MMA8452_PL_THS_REG 0x14    // Type 'read' :
+ 
+#define MMA8452_FF_MT_CFG 0X15     // Type 'read/write' : Freefaul motion functional block configuration
+#define MMA8452_FF_MT_SRC 0X16     // Type 'read' : Freefaul motion event source register
+#define MMA8452_FF_MT_THS 0X17     // Type 'read' : Freefaul motion threshold register
+#define MMA8452_FF_COUNT 0X18      // Type 'read' : Freefaul motion debouce counter
+ 
+#define MMA8452_ASLP_COUNT 0x29    // Type 'read/write' : Counter settings for auto sleep
+#define MMA8452_CTRL_REG_1 0x2A    // Type 'read/write' :
+#define MMA8452_CTRL_REG_2 0x2B    // Type 'read/write' :
+#define MMA8452_CTRL_REG_3 0x2C    // Type 'read/write' :
+#define MMA8452_CTRL_REG_4 0x2D    // Type 'read/write' :
+#define MMA8452_CTRL_REG_5 0x2E    // Type 'read/write' :
+ 
+// Defined in table 13 of the Freescale PDF
+/// xxx these all need to have better names
+#define STANDBY 0x00                        // State value returned after a SYSMOD request, it can be in state STANDBY, WAKE or SLEEP
+#define WAKE 0x01                           // State value returned after a SYSMOD request, it can be in state STANDBY, WAKE or SLEEP
+#define SLEEP 0x02                          // State value returned after a SYSMOD request, it can be in state STANDBY, WAKE or SLEEP
+#define ACTIVE 0x01                         // Stage value returned and set in Control Register 1, it can be STANDBY=00, or ACTIVE=01
+ 
+#define TILT_STATUS 0x03        // Tilt Status (Read only)
+#define SRST_STATUS 0x04        // Sample Rate Status Register (Read only)
+#define SPCNT_STATUS 0x05       // Sleep Count Register (Read/Write)
+#define INTSU_STATUS 0x06       // Interrupt Setup Register
+#define MODE_STATUS 0x07        // Mode Register (Read/Write)
+#define SR_STATUS 0x08          // Auto-Wake and Active Mode Portrait/Landscape Samples per Seconds Register (Read/Write)
+#define PDET_STATUS 0x09        // Tap/Pulse Detection Register (Read/Write)
+#define PD_STATUS 0xA           // Tap/Pulse Debounce Count Register (Read/Write)
+ 
+// masks for enabling/disabling standby
+#define MMA8452_ACTIVE_MASK 0x01
+#define MMA8452_STANDBY_MASK 0xFE
+ 
+// mask for dynamic range reading and writing
+#define MMA8452_DYNAMIC_RANGE_MASK 0xFC
+ 
+// mask and shift for data rate reading and writing
+#define MMA8452_DATA_RATE_MASK 0xC7
+#define MMA8452_DATA_RATE_MASK_SHIFT 0x03
+ 
+// mask and shift for general reading and writing
+#define MMA8452_WRITE_MASK 0xFE
+#define MMA8452_READ_MASK 0x01
+ 
+// mask and shift for bit depth reading and writing
+#define MMA8452_BIT_DEPTH_MASK 0xFD
+#define MMA8452_BIT_DEPTH_MASK_SHIFT 0x01
+ 
+// status masks and shifts
+#define MMA8452_STATUS_ZYXDR_MASK 0x08
+#define MMA8452_STATUS_ZDR_MASK 0x04
+#define MMA8452_STATUS_YDR_MASK 0x02
+#define MMA8452_STATUS_XDR_MASK 0x01
+ 
+/**
+ * Wrapper for the MMA8452 I2C driven accelerometer.
+ */
+class MMA8452 {
+            
+    public:
+    
+       enum DynamicRange {
+           DYNAMIC_RANGE_2G=0x00,
+           DYNAMIC_RANGE_4G,
+           DYNAMIC_RANGE_8G,
+           DYNAMIC_RANGE_UNKNOWN
+       };
+        
+       enum BitDepth {
+           BIT_DEPTH_12=0x00,
+           BIT_DEPTH_8, // 1 sets fast read mode, hence the inversion
+           BIT_DEPTH_UNKNOWN
+       };
+       
+       enum DataRateHz {
+          RATE_800=0x00,
+          RATE_400,
+          RATE_200,
+          RATE_100,
+          RATE_50,
+          RATE_12_5,
+          RATE_6_25,
+          RATE_1_563,
+          RATE_UNKNOWN
+       };
+         
+       /**
+        * Create an accelerometer object connected to the specified I2C pins.
+        *
+        * @param sda I2C data port
+        * @param scl I2C clock port
+        * @param frequency 
+        * 
+        */ 
+      MMA8452(PinName sda, PinName scl, int frequency);
+       
+      /// Destructor
+      ~MMA8452();
+      
+      /**
+       * Puts the MMA8452 in active mode.
+       * @return 0 on success, 1 on failure.
+       */
+      int activate();
+ 
+      /**
+       * Puts the MMA8452 in standby.
+       * @return 0 on success, 1 on failure.
+       */
+      int standby();      
+    
+       /**
+        * Read the device ID from the accelerometer (should be 0x2a)
+        *
+        * @param dst pointer to store the ID
+        * @return 0 on success, 1 on failure.
+        */        
+      int getDeviceID(char* dst);  
+      
+      /**
+       * Read the MMA8452 status register.
+       *
+       * @param dst pointer to store the register value.
+       * @ return 0 on success, 1 on failure.
+       */
+      int getStatus(char* dst);  
+      
+      /** 
+       * Read the raw x, y, an z registers of the MMA8452 in one operation.
+       * All three registers are read sequentially and stored in the provided buffer.
+       * The stored values are signed 2's complement left-aligned 12 or 8 bit integers.
+       *
+       * @param dst The destination buffer. Note that this needs to be 3 bytes for
+       * BIT_DEPTH_8 and 6 bytes for BIT_DEPTH_12. It is upto the caller to ensure this.
+       * @return 0 for success, and 1 for failure
+       * @sa setBitDepth
+       */ 
+      int readXYZRaw(char *dst);
+      
+      /// Read the raw x register into the provided buffer. @sa readXYZRaw
+      int readXRaw(char *dst);
+      /// Read the raw y register into the provided buffer. @sa readXYZRaw
+      int readYRaw(char *dst);
+      /// Read the raw z register into the provided buffer. @sa readXYZRaw
+      int readZRaw(char *dst);
+      
+      /**
+       * Read the x, y, and z signed counts of the MMA8452 axes.
+       * 
+       * Count resolution is either 8 bits or 12 bits, and the range is either +-2G, +-4G, or +-8G
+       * depending on settings. The number of counts per G are 1024, 512, 256 for 2,4, and 8 G
+       * respectively at 12 bit resolution and 64, 32, 16 for 2, 4, and 8 G respectively at
+       * 8 bit resolution.
+       * 
+       * This function queries the MMA8452 and returns the signed counts for each axes.
+       *
+       * @param x Pointer to integer to store x count
+       * @param y Pointer to integer to store y count
+       * @param z Pointer to integer to store z count
+       * @return 0 on success, 1 on failure.
+       */
+      int readXYZCounts(int *x, int *y, int *z);
+      
+      /// Read the x axes signed count. @sa readXYZCounts
+      int readXCount(int *x);
+      /// Read the y axes signed count. @sa readXYZCounts
+      int readYCount(int *y);
+      /// Read the z axes signed count. @sa readXYZCounts
+      int readZCount(int *z);
+      
+      /**
+       * Read the x, y, and z accelerations measured in G.
+       *
+       * The measurement resolution is controlled via setBitDepth which can
+       * be 8 or 12, and by setDynamicRange, which can be +-2G, +-4G, or +-8G.
+       *
+       * @param x A pointer to the double to store the x acceleration in.
+       * @param y A pointer to the double to store the y acceleration in.
+       * @param z A pointer to the double to store the z acceleration in.
+       *
+       * @return 0 on success, 1 on failure.
+       */
+      int readXYZGravity(double *x, double *y, double *z);
+      
+      /// Read the x gravity in G into the provided double pointer. @sa readXYZGravity
+      int readXGravity(double *x);
+      /// Read the y gravity in G into the provided double pointer. @sa readXYZGravity
+      int readYGravity(double *y);
+      /// Read the z gravity in G into the provided double pointer. @sa readXYZGravity
+      int readZGravity(double *z);
+      
+      /// Returns 1 if data has been internally sampled (is available) for all axes since last read, 0 otherwise.
+      int isXYZReady();
+      /// Returns 1 if data has been internally sampled (is available) for the x-axis since last read, 0 otherwise.
+      int isXReady();
+      /// Returns 1 if data has been internally sampled (is available) for the y-axis since last read, 0 otherwise.
+      int isYReady();
+      /// Returns 1 if data has been internally sampled (is available) for the z-axis since last read, 0 otherwise.
+      int isZReady();
+            
+      /** 
+       * Reads a single byte from the specified MMA8452 register.
+       *
+       * @param addr The internal register address.
+       * @param dst The destination buffer address.
+       * @return 1 on success, 0 on failure.
+       */
+      int readRegister(char addr, char *dst);
+      
+      /** 
+       * Reads n bytes from the specified MMA8452 register.
+       *
+       * @param addr The internal register address.
+       * @param dst The destination buffer address.
+       * @param nbytes The number of bytes to read.
+       * @return 1 on success, 0 on failure.
+       */
+      int readRegister(char addr, char *dst, int nbytes);
+        
+       /** 
+        * Write to the specified MMA8452 register.
+        *
+        * @param addr The internal register address
+        * @param data Data byte to write
+        */    
+      int writeRegister(char addr, char data);
+      
+       /** 
+        * Write a data buffer to the specified MMA8452 register.
+        *
+        * @param addr The internal register address
+        * @param data Pointer to data buffer to write
+        * @param nbytes The length of the data buffer to write
+        */    
+      int writeRegister(char addr, char *data, int nbytes);
+      
+      int setDynamicRange(DynamicRange range, int toggleActivation=1);
+      int setBitDepth(BitDepth depth, int toggleActivation=1);
+      int setDataRate(DataRateHz dataRate, int toggleActivation=1);
+      
+      DynamicRange getDynamicRange();
+      DataRateHz getDataRate();
+      BitDepth getBitDepth();
+      
+      #ifdef MMA8452_DEBUG
+      void debugRegister(char reg);
+      #endif
+   
+    private:
+      /**
+       * Reads the specified register, applies the mask with logical AND, logical ORs the value
+       * and writes back the result to the register. If toggleActivation is set to true then the
+       * device is put in standby before the operation, and activated at the end.
+       * Setting it to false is useful for setting options on a device that you want to keep in
+       * standby.
+       */
+      int maskAndApplyRegister(char reg, char mask, char value, int toggleActivation);
+      
+      /// Reads the specified register, applies the mask with logical AND, and writes the result back.
+      int logicalANDRegister(char addr, char mask);
+      /// Reads the specified register, applies the mask with logical OR, and writes the result back.
+      int logicalORRegister(char addr, char mask);
+      /// Reads the specified register, applies the mask with logical XOR, and writes the result back.
+      int logicalXORRegister(char addr, char mask);
+      
+      /// Converts the 12-bit two's complement number in buf to a signed integer. Returns the integer.
+      int twelveBitToSigned(char *buf);
+      /// Converts the 8-bit two's complement number in buf to a signed integer. Returns the integer.
+      int eightBitToSigned(char *buf);
+      
+      /// Converts a count to a gravity using the supplied countsPerG. Returns the gravity.
+      double convertCountToGravity(int count, int countsPerG);
+      
+      /// Reads the register at addr, applies the mask with logical AND, and returns the result.
+      char getMaskedRegister(int addr, char mask);
+      
+      /// Get the counts per G for the current settings of bit depth and dynamic range.
+      int getCountsPerG();
+    
+      I2C _i2c;
+      int _frequency;
+      int _readAddress;
+      int _writeAddress;
+      
+      BitDepth _bitDepth;
+      DynamicRange _dynamicRange;       
+};
+            
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PinDetect.lib	Mon Feb 11 04:31:13 2019 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/AjK/code/PinDetect/#cb3afc45028b
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SDFileSystem.lib	Mon Feb 11 04:31:13 2019 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/SDFileSystem/#c8f66dc765d4
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Speaker.h	Mon Feb 11 04:31:13 2019 +0000
@@ -0,0 +1,19 @@
+#include "mbed.h"
+// new class to play a note on Speaker based on PwmOut class
+class Speaker
+{
+public:
+    Speaker(PinName pin) : _pin(pin) {
+// _pin(pin) means pass pin to the Speaker Constructor
+    }
+// class method to play a note based on PwmOut class
+    void PlayNote(float frequency, float duration, float volume) {
+        _pin.period(1.0/frequency);
+        _pin = volume/2.0;
+        wait(duration);
+        _pin = 0.0;
+    }
+
+private:
+    PwmOut _pin;
+};
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Feb 11 04:31:13 2019 +0000
@@ -0,0 +1,337 @@
+#include "mbed.h"
+#include "uLCD_4DGL.h"
+#include "AnalogIn.h"
+
+#include "Speaker.h"
+#include "PinDetect.h"
+
+#include "SDFileSystem.h"
+#include <string>
+
+#include "MMA8452.h"
+
+uLCD_4DGL uLCD(p9, p10, p11);          // used in all parts
+
+Speaker mySpeaker(p21);                // used in parts 4 and 6
+
+SDFileSystem sd(p5, p6, p7, p8, "sd"); // used in part 5
+
+Serial pc(USBTX,USBRX);                // used in part 6
+
+DigitalOut myled1(LED1);
+DigitalOut myled2(LED2);
+DigitalOut myled3(LED3);
+DigitalOut myled4(LED4);
+
+PinDetect pb1(p16);
+PinDetect pb2(p17);
+PinDetect pb3(p18);
+PinDetect selector(p14);
+
+int currentPart = 1; // global placeholder
+
+void part1() // What's up mbed!
+{
+    // begin transition code
+    uLCD.cls();
+    uLCD.printf("\nLab 2 - part 1:\n  What's up mbed!\n");
+    wait(2);
+    uLCD.cls();
+    // end transition code
+    
+    uLCD.printf("\nWhat's up mbed!\n");
+}
+
+void part2() // Bouncing Ball
+{
+    // begin transition code
+    uLCD.cls();
+    uLCD.printf("\nLab 2 - part 2:\n  Bouncing Balls\n");
+    wait(2);
+    uLCD.cls();
+    // end transition code
+    
+    
+    uLCD.display_control(PORTRAIT);
+    uLCD.cls();
+    uLCD.printf("Bouncing Ball");
+    uLCD.baudrate(BAUD_3000000); //jack up baud rate to max for fast display
+    wait(1.0);
+    
+    //Set up initial conditions
+    float fx=50.0,fy=21.0,vx=0.4,vy=0.3;
+    int x=50,y=21,radius=4;
+    uLCD.background_color(BLACK);
+    uLCD.cls();
+    
+    //draw borders
+    uLCD.line(0, 0, 127, 0, WHITE);
+    uLCD.line(127, 0, 127, 127, WHITE);
+    uLCD.line(127, 127, 0, 127, WHITE);
+    uLCD.line(0, 127, 0, 0, WHITE);
+    
+    for (int i=0; i<1500; i++)
+    {
+        //draw ball
+        uLCD.circle(x, y, radius, RED);
+        //bounce off edge walls and slow down a bit
+        if ((x<=radius+1) || (x>=126-radius)) vx = -.95*vx;
+        if ((y<=radius+1) || (y>=126-radius)) vy = -.95*vy;
+        //erase old ball location
+        uLCD.filled_circle(x, y, radius, BLACK);
+        //calculate new ball position
+        fx=fx+vx;
+        fy=fy+vy;
+        x=(int)fx;
+        y=(int)fy;
+    } //end for loop
+}
+
+void part3() // Digital Thermometer
+{
+    // begin transition code
+    uLCD.cls();
+    uLCD.printf("\nLab 2 - part 3:\n  Digital\n  Thermometer\n");
+    wait(2);
+    uLCD.cls();
+    // end transition code
+    
+    
+    class TMP36
+    {
+        public:
+            TMP36(PinName pin);
+            TMP36();
+            float read();
+        private:
+            AnalogIn _pin;
+    };
+
+    TMP36::TMP36(PinName pin) : _pin(pin) {} //This is an initializer list … pass pin to AnalogIn constructor
+    float TMP36::read()
+    {
+        //convert sensor reading to C
+        return ((_pin.read() * 3.3) - 0.500) * 100.0;
+        // _pin.read() returns normalized voltage value as float
+    }
+
+    //instantiate new class to set p15 to analog input
+    //to read and convert TMP36 sensor's voltage output
+    TMP36 myTMP36(p15);
+
+    float tempC, tempF;
+    while(1)
+    {
+        tempC = myTMP36.read();
+        // convert to F
+        tempF = (9.0 * tempC) / 5.0 + 32.0;
+        // print current temp
+        uLCD.cls();
+        uLCD.printf("\n%5.2f C\n%5.2f F\n\n", tempC, tempF);
+        wait(0.5);
+    }
+}
+
+void part4() // Jazzy Tunes
+{
+    // begin transition code
+    uLCD.cls();
+    uLCD.printf("\nLab 2 - part 4:\n  Jazzy Tunes\n");
+    wait(2);
+    uLCD.cls();
+    // end transition code
+    
+    
+    void pb1_hit_callback (void)
+    {
+        myled1 = !myled1;
+        mySpeaker.PlayNote(200.0,0.25,0.1);
+    }
+    //------------------------------------------------------------------------------
+    // Callback routine is interrupt activated by a debounced pb2 hit
+    // That is … this code runs with interrupt is generated by second button press
+    void pb2_hit_callback (void)
+    {
+        myled2 = !myled2;
+        mySpeaker.PlayNote(400.0,0.25,0.1);
+    }
+    //------------------------------------------------------------------------------
+    // Callback routine is interrupt activated by a debounced pb3 hit
+    // That is … this code runs with interrupt is generated by third button press
+    void pb3_hit_callback (void)
+    {
+        myled3 = !myled3;
+        mySpeaker.PlayNote(800.0,0.25,0.1);
+    }
+    //------------------------------------------------------------------------------
+
+    //setup push buttons
+    pb1.mode(PullUp);
+    pb2.mode(PullUp);
+    pb3.mode(PullUp);
+    // Delay for initial pullup to take effect
+    wait(.01);
+    // Setup Interrupt callback functions for a pb hit
+    pb1.attach_deasserted(&pb1_hit_callback);
+    pb2.attach_deasserted(&pb2_hit_callback);
+    pb3.attach_deasserted(&pb3_hit_callback);
+    // Start sampling pb inputs using interrupts
+    pb1.setSampleFrequency();
+    pb2.setSampleFrequency();
+    pb3.setSampleFrequency();
+    // pushbuttons now setup and running
+    while(1)
+    {
+        myled4 = !myled4;
+        wait(0.5);
+    }
+}
+
+void part5_1() // Hello Micro SD Card - Writing
+{
+    // begin transition code
+    uLCD.cls();
+    uLCD.printf("\nLab 2 - part 5.1:\n  Hello Micro SD\n  Card - Writing\n");
+    wait(2);
+    uLCD.cls();
+    // end transition code
+    
+    
+    uLCD.printf("Hello Micro SD\nCard!\n");
+    mkdir("/sd/mydir", 0777);
+    FILE *fp = fopen("/sd/mydir/sdtest.txt", "w");
+    if(fp == NULL) 
+    {
+        uLCD.printf("Error on open \n");
+    }
+    fprintf(fp, "I love ECE2036");
+    fclose(fp);
+}
+
+void part5_2() // Hello Micro SD Card - Reading
+{
+    // begin transition code
+    uLCD.cls();
+    uLCD.printf("\nLab 2 - part 5.2:\n  Hello Micro SD\n  Card - Reading\n");
+    wait(2);
+    uLCD.cls();
+    // end transition code
+    
+    
+    string inputString;
+    uLCD.printf("Content of sdtest.txt is: \n");
+    FILE *fp = fopen("/sd/mydir/sdtest.txt", "r");
+    if(fp == NULL) 
+    {
+        uLCD.printf("Error on open \n");
+    }
+    else
+    {
+        while (fscanf(fp,"%s", inputString)!= EOF) //reads in a string delineated by white space
+        {
+            uLCD.printf("%s ", inputString.c_str());
+        }
+    }
+    fclose(fp);
+}
+
+void part6() // Triple Axis Accelerometer
+{
+    // begin transition code
+    uLCD.cls();
+    uLCD.printf("\nLab 2 - part 6:\n  Triple Axis\n  Accelerometer\n");
+    wait(2);
+    uLCD.cls();
+    // end transition code
+    
+    
+    // you can play around with the parameters to see the response
+    int radius = 10;
+    int offsetx = 63;
+    int offsety = 63;
+    double factor = 50;
+    double music_factor = 200;
+    bool MusicOn = false;
+   
+    //set the push buttons that control sounds
+    pb1.mode(PullUp);
+    pb2.mode(PullUp);
+    //I will not use interupts like in jazzy tunes
+ 
+   
+    double x = 0, y = 0, z = 0;
+ 
+    MMA8452 acc(p28, p27, 40000);  //instantiate an acc object! 
+   
+    //set parameters -- use these and don't change
+    acc.setBitDepth(MMA8452::BIT_DEPTH_12);
+    acc.setDynamicRange(MMA8452::DYNAMIC_RANGE_4G);
+    acc.setDataRate(MMA8452::RATE_100);
+   
+   
+    while(1) 
+    {
+        uLCD.circle(-1*y*factor+offsety, -1*x*factor+offsetx, radius, BLACK);
+       
+        if(!acc.isXYZReady()) 
+        {
+            wait(0.01);
+        }
+        else
+        { 
+            acc.readXYZGravity(&x,&y,&z); //notice this is passed by reference use pointers
+      
+            uLCD.circle(-1*y*factor+offsety, -1*x*factor+offsetx, radius, WHITE);
+      
+            if (MusicOn) mySpeaker.PlayNote(440.0+x*music_factor,0.25+0.2*y,0.05);
+      
+            if (pb1 == true) MusicOn = true;
+           
+            if (pb2 == false) MusicOn = false;
+                 
+            // You can uncomment this line to see the values coming off the MMA8452           
+            uLCD.cls();
+            uLCD.printf("\n(%.2f,%.2f,%.2f)  \n", x,y,z);
+      
+        } //end else
+      
+    } //end infinite while loop
+}
+
+void main_callback()
+{
+    switch (currentPart)
+    {
+        case 1: part1();
+                currentPart++;
+                break;
+        case 2: part2();
+                currentPart++;
+                break;
+        case 3: part3();
+                currentPart++;
+                break;
+        case 4: part4();
+                currentPart++;
+                break;
+        case 5: part5_1();
+                part5_2();
+                currentPart++;
+                break;
+        case 6: part6();
+                currentPart = 1;
+                break;
+        
+    }
+}
+
+int main() {
+    selector.mode(PullUp);
+    wait(.01);
+    selector.attach_deasserted(&main_callback);
+    selector.setSampleFrequency();
+    while(1) 
+    {
+        continue;
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Mon Feb 11 04:31:13 2019 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/824293ae5e43
\ No newline at end of file