Kyle Price / Mbed 2 deprecated Hello_World_FRDM_Board

My take on the obligatory Hello World app for the FRD-KL25Z platform. This app shows off some of the onboard peripherals. I have commented a chunk of the code, and will work to revise this to add more commenting of all sub-routines.

Dependencies:   FRDM_MMA8451Q TSI mbed

Files at this revision

API Documentation at this revision

Revision 1:6a1079e4e6ab, committed 2014-08-17

Comitter:
milspect18
Date:
Sun Aug 17 23:47:51 2014 +0000
Parent:
0:216148fa726d
Commit message:
Initial published release of my version of the FRDM-KL25Z board.

Changed in this revision

ComparatorIn.lib Show diff for this revision Revisions of this file
USBDevice.lib Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/ComparatorIn.lib	Thu Jun 26 15:11:39 2014 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1 +0,0 @@
-http://mbed.org/users/frankvnk/code/ComparatorIn/#e6a4cd28e217

--- a/USBDevice.lib	Thu Jun 26 15:11:39 2014 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1 +0,0 @@
-http://mbed.org/users/mbed_official/code/USBDevice/#d495202c90f4

--- a/main.cpp	Thu Jun 26 15:11:39 2014 +0000
+++ b/main.cpp	Sun Aug 17 23:47:51 2014 +0000
@@ -1,29 +1,36 @@
 #include "mbed.h"
+#include "ctype.h"
 #include "TSISensor.h"
 #include "MMA8451Q.h"
 
-
-// This is the default address as specified by the mfg
-#define MMA8451_I2C_ADDRESS (0x1d<<1)
+#define MMA8451_I2C_ADDRESS (0x1d<<1)   // 0x01D<<1 is the default address as specified by the mfg
 
 
-PwmOut myRedLed(LED1);
-PwmOut myGreenLed(LED2);
-PwmOut myBlueLed(LED3);
-PwmOut externalLight(D0);
+/********************************
+ * GLOBAL VARIABLES / GPIO PINS *
+ ********************************/
+PwmOut myRedLed(LED1);      //
+PwmOut myGreenLed(LED2);    // LED1, LED2 and LED3 are the R, G and B onboard leds
+PwmOut myBlueLed(LED3);     //
+PwmOut externalLight(PTA1);   // For use with an external led.
 
 MMA8451Q accel(PTE25, PTE24, MMA8451_I2C_ADDRESS);    // 3-axis MEMS accelerometer.
-TSISensor touchSlider;      // Capacitive touch sensor, defined as touchSlider.
+TSISensor touchSlider;      // Capacitive touch sensor, instantiated as touchSlider.
+Serial pc(USBTX, USBRX);    // Instantiate a new serial port using the Serial over USB
+
 
-//Function forward declarations
+//-----------------------------------------------------------//
+//  Function prototypes for the accelerometer demo function  //
+//  as well as the capacitive touch slider demo              //
+//-----------------------------------------------------------//
 void AccelDemo();
 void SliderFadeTimeDemo();
 void TouchFadeIn(float val);
 void TouchFadeOut(float val);
 
-//
-// The following prototypes are all related to the morse code blinking.
-//
+//-----------------------------------------------------------------------//
+//  The following prototypes are all related to the morse code blinking. //
+//-----------------------------------------------------------------------//
 void morseCodeBlinker(char input[], float speed);
 void SendLetter(char input, float speed);
 void WordSpace(float speed);
@@ -32,18 +39,33 @@
 void Dot(float speed);
 
 
-//Main constructor
+/****************
+ * MAIN ROUTINE *
+ ****************/
 int main()
 {
     // Blink the LED's to morse code "HELLO WORLD"
-    morseCodeBlinker("How are you", 0.25f);
-
+    float blinkSpeed = 0.05f;
+    morseCodeBlinker("Hello World", blinkSpeed);
 
-    while (1)
+    while (true)
     {
-        // In the infinite loop of Main, we check to see if the touch slider is being touched
-        // and if it is we call the touch slider demo function
-        // if it is not we will be performing the accelerometer demo function
+        //--------------------------------------------------------------------------------------//
+        //  In the infinite loop of Main, we check to see if the touch slider is being touched  //
+        //  and if it is we call the touch slider demo function                                 //
+        //  if it is not we will be performing the accelerometer demo function                  //
+        //--------------------------------------------------------------------------------------//
+        
+        char userInput;
+    
+        if (pc.readable())
+        {
+            userInput = pc.getc();
+            pc.putc(userInput);
+            pc.putc('\n');
+            pc.putc('\r');
+        }
+        
         if (touchSlider.readDistance() > 1)
         {
             SliderFadeTimeDemo();
@@ -58,33 +80,38 @@
 
 
 
+/****************
+ * SUB ROUTINES *
+ ****************/
 void SliderFadeTimeDemo()
 {
     float val = 0.00f;
+    float speedFactor = 0.5f;
+    float ledOff = 1.00f;
+    int minDistance = 2;
 
-    if (touchSlider.readDistance() > 2)
+    if (touchSlider.readDistance() > minDistance)
     {
-        val = touchSlider.readDistance() * 0.5f;
+        val = touchSlider.readDistance() * speedFactor;
         TouchFadeIn(val);
         TouchFadeOut(val);
     }
     else
     {
-        if (val > 4)
+        if (val > minDistance)
         {
             TouchFadeIn(val);
             TouchFadeOut(val);
         }
         else
         {
-            myRedLed = 1.00f;
-            myGreenLed = 1.00f;
-            myBlueLed = 1.00f;
+            myRedLed = ledOff;
+            myGreenLed = ledOff;
+            myBlueLed = ledOff;
         }
     }
 }
 
-
 void TouchFadeIn(float val)
 {   
     for (float i = 1.00f; i > 0.00f; i -= 0.01f)
@@ -110,8 +137,6 @@
     }
 }
 
-
-
 void AccelDemo()
 {
     float xAxisData = 1 - abs(accel.getAccX());
@@ -142,7 +167,6 @@
     }
 }
 
-
 void SendLetter(char input, float speed)
 {
     char lowerCaseLetter = tolower(input);