Revision 0:8e91b1443453, committed 2015-10-20

Comitter:

jkerickson

Date:

Tue Oct 20 21:11:52 2015 +0000

Child:

1:f0caa0dfa669

Commit message:

Basic functionality of trackball/LEDs

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Trackball.h	Tue Oct 20 21:11:52 2015 +0000
@@ -0,0 +1,66 @@
+#include "mbed.h"
+
+#define dir_UP 1
+#define dir_DOWN 2
+#define dir_LEFT 3
+#define dir_RIGHT 4
+#define dir_BUTTON 5
+#define color_WHITE 1
+#define color_RED 2
+#define color_GREEN 3
+#define color_BLUE 4
+
+//Setup a new class for a Trackball Module
+class Trackball
+{
+public:
+    Trackball(PinName pin_btn, PinName pin_lft, PinName pin_rht, PinName pin_up, PinName pin_dwn, PinName pin_wht, PinName pin_grn, PinName pin_red, PinName pin_blu);
+    unsigned int read(int dir);
+    void write(unsigned int val, int color);
+private:
+//class sets up the pins
+    DigitalIn _pin_btn;
+    DigitalIn _pin_lft;
+    DigitalIn _pin_rht;
+    DigitalIn _pin_up;
+    DigitalIn _pin_dwn;
+    DigitalOut _pin_wht;
+    DigitalOut _pin_grn;
+    DigitalOut _pin_red;
+    DigitalOut _pin_blu;
+};
+
+Trackball::Trackball(PinName pin_btn, PinName pin_lft, PinName pin_rht, PinName pin_up, PinName pin_dwn, PinName pin_wht, PinName pin_grn, PinName pin_red, PinName pin_blu)
+    : _pin_btn(pin_btn), _pin_lft(pin_lft), _pin_rht(pin_rht), _pin_up(pin_up), _pin_dwn(pin_dwn), _pin_wht(pin_wht), _pin_grn(pin_grn), _pin_red(pin_red), _pin_blu(pin_blu)
+{
+       //initialize all LED pins to off.
+
+    _pin_wht = 0;
+    _pin_grn = 0;
+    _pin_red = 0;
+    _pin_blu = 0;
+}
+
+void Trackball::write(unsigned int val, int color)
+
+    {
+        if (color == color_WHITE){_pin_wht = val;}
+        else if(color == color_BLUE){_pin_blu = val;}
+        else if(color == color_GREEN){_pin_grn = val;}
+        else if(color == color_RED){_pin_red = val;}
+        else {printf("Invalid LED Color");}
+    }
+unsigned int Trackball::read(int dir)
+
+    {
+        unsigned int val;
+        if(dir == dir_UP){val = _pin_up;}
+        else if(dir == dir_DOWN){val = _pin_dwn;}
+        else if(dir == dir_RIGHT){val = _pin_rht;}
+        else if(dir == dir_LEFT){val = _pin_lft;}
+        else if(dir == dir_BUTTON){val = _pin_btn;}
+        else {val = 1;}
+        
+        return val;
+        
+    }

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Oct 20 21:11:52 2015 +0000
@@ -0,0 +1,79 @@
+#include "mbed.h"
+#include "Trackball.h"
+
+//set up the trackball
+
+Trackball trackball(p12, p13, p14, p15, p16, p17, p18, p19, p20);
+Serial pc(USBTX, USBRX);
+
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+
+int main() {
+    
+//initial LED testing
+//turn on each color for 2 seconds
+    
+    trackball.write(1, color_WHITE);
+    wait(2);
+    trackball.write(0, color_WHITE);
+    trackball.write(1, color_BLUE);
+    wait(2);
+    trackball.write(0, color_BLUE);
+    trackball.write(1, color_GREEN);
+    wait(2);
+    trackball.write(0, color_GREEN);
+    trackball.write(1, color_RED);
+    wait(2);
+    trackball.write(0, color_RED);
+
+int x_pos = 0;
+int y_pos = 0;
+  
+    while(1) {
+        //read the pins
+        //if LFT,RHT,UP,DWN,or BTN are 0
+        //write out to the colored LEDs
+        //keep track of x and y positions
+        //wait .2
+        
+        //make sure to turn off all other color LEDS when turning on a new one.
+        //keeping the writes inside the if statements prevents flashing of the LED if it is already on and needs to stay on.
+ 
+        if(trackball.read(dir_UP) == 0){
+            y_pos++;
+            trackball.write(1, color_WHITE);
+            trackball.write(0, color_GREEN);
+            trackball.write(0, color_BLUE);
+            trackball.write(0, color_RED);
+            }
+        else if(trackball.read(dir_DOWN) == 0){
+            y_pos--;
+            trackball.write(1, color_GREEN);
+            trackball.write(0, color_WHITE);
+            trackball.write(0, color_BLUE);
+            trackball.write(0, color_RED);
+            }
+        else if(trackball.read(dir_LEFT) == 0){
+            x_pos--;
+            trackball.write(1, color_BLUE);
+            trackball.write(0, color_WHITE);
+            trackball.write(0, color_GREEN);
+            trackball.write(0, color_RED);
+            }
+        else if(trackball.read(dir_RIGHT) == 0){
+            x_pos++;
+            trackball.write(1, color_RED);
+            trackball.write(0, color_WHITE);
+            trackball.write(0, color_GREEN);
+            trackball.write(0, color_BLUE);
+            }
+        else if(trackball.read(dir_BUTTON) == 0){
+            pc.printf("Button pressed.");
+            }
+        pc.printf("X pos: %d, Y pos: %d\n", x_pos, y_pos);  
+        wait(.2);
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Tue Oct 20 21:11:52 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/34e6b704fe68
\ No newline at end of file