jim hamblen
Executive decision maker for the mbed NXP1768 Application board. Ask a question, and press the center joystick button. Uses a pushbutton, PWM speaker, mbed LEDs, RGB LED, LCD, and the C rand function.
Dependencies: C12832_lcd LCD_fonts PinDetect mbed
Revision 0:af96f6744422, committed 2015-02-03
- Comitter:
- 4180_1
- Date:
- Tue Feb 03 19:42:36 2015 +0000
- Commit message:
- ver 1.0
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/C12832_lcd.lib Tue Feb 03 19:42:36 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/dreschpe/code/C12832_lcd/#c9afe58d786a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/LCD_fonts.lib Tue Feb 03 19:42:36 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/dreschpe/code/LCD_fonts/#d0b7d7bf1f56
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/PinDetect.lib Tue Feb 03 19:42:36 2015 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/users/AjK/code/PinDetect/#cb3afc45028b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Speaker.h Tue Feb 03 19:42:36 2015 +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 Tue Feb 03 19:42:36 2015 +0000
@@ -0,0 +1,87 @@
+//Executive Decision Maker for Mbed Application Board
+#include "mbed.h"
+#include "Speaker.h"
+#include "PinDetect.h"
+#include "C12832_lcd.h"
+#include "Arial_9.h" //font for LCD
+#include <math.h> //needed for rand()
+
+DigitalOut myLed1(LED1); //Builtin LEDs
+DigitalOut myLed2(LED2);
+DigitalOut myLed3(LED3);
+DigitalOut myLed4(LED4);
+
+PinDetect pb1(p14); //Debounce pushbutton and use interrupts
+
+Speaker mySpeaker(p26); //PWM speaker to play notes
+
+Timer t; //use a hardware timer
+
+PwmOut r (p23); //RGB LED pins
+PwmOut g (p24);
+PwmOut b (p25);
+
+C12832_LCD lcd; //On board LCD display
+
+volatile int pbStatus = 0; //pb hit flag
+
+void pb1_hit_callback (void) //pb interrupt routine - a callback after debounce
+{
+ pbStatus = 1;
+}
+void funcD( int i) //display a binary number on mbed's 4 LEDs
+{
+ myLed1 = i &0x01;
+ myLed2 = (i>>1) & 0x01;
+ myLed3 = (i>>2) & 0x01;
+ myLed4 = (i>>3) & 0x01;
+}
+int main()
+{
+ unsigned int number=0;
+ //setup debounced pushbutton using interrupts
+ pb1.mode(PullDown);
+ wait(.01);
+ pb1.attach_asserted(&pb1_hit_callback);
+ pb1.setSampleFrequency();
+ //setup LCD prompt
+ lcd.cls();
+ lcd.set_font((unsigned char*) Arial_9);
+ lcd.printf(" Ask a Question, \n\r then push Joystick");
+ //RGB LED init
+ b = 1.0; //blue 1.0=off
+ //use a timer to generate seed for rand (different number to start each time)
+ t.start(); //start timer
+ while(pbStatus == 0) {}; //timer counts until pb hit
+ srand(t.read_ms()); //read ms from timer
+ while(1) {
+ if(pbStatus == 1) { //pb hit?
+ pbStatus = 0; //reset pb hit flag
+ lcd.cls();
+ lcd.locate(38,10);
+ //loop though several random numbers on LEDs and make beeps on Speaker
+ for(int i=0; i<24; ++i) {
+ number = (rand() % 16);
+ mySpeaker.PlayNote(200.0 * (number + 1), 0.1, 1.0);
+ funcD(number);
+ }
+ // Update RGB led: Red, Yellow, or Green based on number
+ // Update LCD: No, Maybe, or Yes
+ b = 1.0;
+ if (number < 5) {
+ r = 0.8;
+ g = 1.0;
+ lcd.printf(" NO");
+ } else {
+ r = 0.8;
+ g = 0.8;
+ if (number <=10) lcd.printf(" MAYBE");
+ if (number > 10) {
+ r = 1.0;
+ lcd.printf(" YES");
+ }
+ }
+ }
+ wait(.05);
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Feb 03 19:42:36 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/4fc01daae5a5 \ No newline at end of file