Revision 0:9dc33481ce1b, committed 2017-03-01

Comitter:

jderemer3

Date:

Wed Mar 01 16:36:55 2017 +0000

Commit message:

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LEDColor.h	Wed Mar 01 16:36:55 2017 +0000
@@ -0,0 +1,25 @@
+#include "mbed.h"
+ 
+//class for 3 PWM color values for RGBLED
+class LEDColor
+{
+public:
+    LEDColor(float r, float g, float b);
+    float red;
+    float green;
+    float blue;
+};
+LEDColor:: LEDColor(float r, float g, float b)
+    : red(r), green(g), blue(b)
+{
+}
+//Operator overload to adjust brightness with no color change
+LEDColor operator * (const LEDColor& x, const float& b)
+{
+    return LEDColor(x.red*b,x.green*b,x.blue*b);
+}
+//Operator overload to add colors
+LEDColor operator + (const LEDColor& x, const LEDColor& y)
+{
+    return LEDColor(x.red+y.red,x.green+y.green,x.blue+y.blue);
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MCP23S17.lib	Wed Mar 01 16:36:55 2017 +0000
@@ -0,0 +1,1 @@
+http://developer.mbed.org/users/romilly/code/MCP23S17/#068b1e8909bb

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Nav_Switch.h	Wed Mar 01 16:36:55 2017 +0000
@@ -0,0 +1,73 @@
+#include "mbed.h"
+ 
+BusOut mbedleds(LED1,LED2,LED3,LED4);
+//BusOut/In is faster than multiple DigitalOut/Ins
+ 
+class Nav_Switch
+{
+public:
+    Nav_Switch(PinName up,PinName down,PinName left,PinName right,PinName fire);
+    int read();
+//boolean functions to test each switch
+    bool up();
+    bool down();
+    bool left();
+    bool right();
+    bool fire();
+//automatic read on RHS
+    operator int ();
+//index to any switch array style
+    bool operator[](int index) {
+        return _pins[index];
+    };
+private:
+    BusIn _pins;
+ 
+};
+Nav_Switch::Nav_Switch (PinName up,PinName down,PinName left,PinName right,PinName fire):
+    _pins(up, down, left, right, fire)
+{
+    _pins.mode(PullUp); //needed if pullups not on board or a bare nav switch is used - delete otherwise
+    wait(0.001); //delays just a bit for pullups to pull inputs high
+}
+inline bool Nav_Switch::up()
+{
+    return !(_pins[0]);
+}
+inline bool Nav_Switch::down()
+{
+    return !(_pins[1]);
+}
+inline bool Nav_Switch::left()
+{
+    return !(_pins[2]);
+}
+inline bool Nav_Switch::right()
+{
+    return !(_pins[3]);
+}
+inline bool Nav_Switch::fire()
+{
+    return !(_pins[4]);
+}
+inline int Nav_Switch::read()
+{
+    return _pins.read();
+}
+inline Nav_Switch::operator int ()
+{
+    return _pins.read();
+}
+ 
+//Nav_Switch myNav( p9, p6, p7, p5, p8); //pin order on Sparkfun breakout
+ 
+//int main()
+//{
+//    while(1) {
+//        //with pullups a button hit is a "0" - "~" inverts data to leds
+//        mbedleds = ~(myNav & 0x0F); //update leds with nav switch direction inputs
+//        if(myNav.fire()) mbedleds = 0x0F; //special all leds on case for fire (center button)
+//        //or use - if(myNav[4]==0) mbedleds = 0x0F; //can index a switch bit like this
+//        wait(0.02);
+//    }
+//}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PinDetect.lib	Wed Mar 01 16:36:55 2017 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/AjK/code/PinDetect/#cb3afc45028b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/RGBLed.h	Wed Mar 01 16:36:55 2017 +0000
@@ -0,0 +1,76 @@
+#include "mbed.h"
+ 
+//Class to control an RGB LED using three PWM pins
+class RGBLed
+{
+public:
+    RGBLed(PinName redpin, PinName greenpin, PinName bluepin);
+    void write(float red,float green, float blue);
+    void write(LEDColor c);
+    RGBLed operator = (LEDColor c) {
+        write(c);
+        return *this;
+    };
+private:
+    PwmOut _redpin;
+    PwmOut _greenpin;
+    PwmOut _bluepin;
+};
+ 
+RGBLed::RGBLed (PinName redpin, PinName greenpin, PinName bluepin)
+    : _redpin(redpin), _greenpin(greenpin), _bluepin(bluepin)
+{
+    //50Hz PWM clock default a bit too low, go to 2000Hz (less flicker)
+    _redpin.period(0.0005);
+}
+ 
+void RGBLed::write(float red,float green, float blue)
+{
+    _redpin = red;
+    _greenpin = green;
+    _bluepin = blue;
+}
+void RGBLed::write(LEDColor c)
+{
+    _redpin = c.red;
+    _greenpin = c.green;
+    _bluepin = c.blue;
+}
+ 
+////classes could be moved to include file
+// 
+// 
+////Setup RGB led using PWM pins and class
+//RGBLed myRGBled(p23,p22,p21); //RGB PWM pins
+// 
+////setup some color objects in flash using const's
+//const LEDColor red(1.0,0.0,0.0);
+//const LEDColor green(0.0,0.2,0.0);
+////brighter green LED is scaled down to same as red and
+////blue LED outputs on Sparkfun RGBLED
+//const LEDColor blue(0.0,0.0,1.0);
+//const LEDColor yellow(1.0,0.2,0.0);
+//const LEDColor white(1.0,0.2,1.0);
+// 
+//int main()
+//{
+//    while(1) {
+//        myRGBled = red;
+//        //myRGBled.write(1.0,0.0,0,0); //red
+//        wait(2.0);
+//        myRGBled = green;
+//        //myRGBled.write(0.0,1.0,0.0); //green
+//        wait(2.0);
+//        myRGBled = blue;
+//        //myRGBled.write(0.0,0.0,1.0); //blue
+//        wait(2.0);
+//        myRGBled = red + green; //yellow = red + green
+//        wait(2.0);
+//        //white with a slow fade to black dimming effect
+//        for (float brightness=1.0; brightness>=0.0001; brightness*=0.99) {
+//            myRGBled = white * brightness;
+//            wait(0.005);
+//        }
+//        wait(2.0);
+//    }
+//}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lab1.cpp	Wed Mar 01 16:36:55 2017 +0000
@@ -0,0 +1,123 @@
+// ECE 4180
+// Lab/Project 1
+// Jeremy M. Deremer
+// Due 26 January, 2017
+
+#include "mbed.h"
+#include "PinDetect.h"
+#include "LEDColor.h"
+#include "RGBLed.h"
+#include "MCP23S17.h"
+#include "Nav_Switch.h"
+
+PwmOut led(p24);
+
+//   Instantiate pushbuttons on analog pins
+PinDetect pb1(p17);
+PinDetect pb2(p18);
+PinDetect pb3(p19);
+
+//   Instantiate RGBLed and allocate default colors
+//RGBLed myRGBled(p23,p22,p21); //RGB PWM pins
+//const LEDColor off(0.0,0.0,0.0);
+//const LEDColor blue(0.0,0.0,1.0);
+
+//   Instantiate I/O Expander
+// Create SPI bus
+SPI spi(p5, p6, p7);
+char Opcode = 0x40;
+// Next create a MCP23S17
+MCP23S17 chip = MCP23S17(spi, p20, Opcode);
+DigitalOut led1(LED1); // mbed LED1 is used for test status display
+
+//    Instantiate Nav Joystick
+Nav_Switch myNav(p15, p12, p13, p11, p8); //pin order on Sparkfun breakout
+
+float inc = 0.1f;
+float val = 0.5f;
+
+// Callback routine is interrupt activated by a debounced pb1 hit
+void pb1_hit_callback (void)
+{
+    val = led.read();
+    if (val == 0.00f)
+    {
+        led.write(0.50f);  // 50% duty cycle
+    }
+    else
+    {
+        led.write(0.00f);  // 0% duty cycle
+    }
+}
+
+// Callback routine is interrupt activated by a debounced pb2 hit
+void pb2_hit_callback (void)
+{
+    // add brightness
+    val = led.read();
+    if (val < 1.00f)
+    {
+        val += inc; 
+        led.write(val);
+    }
+}
+
+// Callback routine is interrupt activated by a debounced pb3 hit
+void pb3_hit_callback (void)
+{
+    // subtract brightness
+    val = led.read();
+    if (val > 0.0f)
+    {
+        val -= inc; 
+        led.write(val);
+    }
+}
+
+int main() {
+    
+    led.write(0.5f);  // 50% duty cycle
+    
+    // Use internal pullups for the three pushbuttons
+    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
+    
+    //  Set all 8 Port A bits to output direction
+    chip.direction(PORT_A, 0x00);
+    //  Set all 8 Port B bits to input direction
+    chip.direction(PORT_B, 0xFF);
+    
+    while(1)          // led flashing
+    {
+        // write 0xAA to MCP23S17 Port A
+        chip.write(PORT_A, 0xAA);
+        
+        // read back value from MCP23S17 Port B and display B0 on mbed led1
+        if ((chip.read(PORT_B)& 0x01) == 0x01)
+        {
+            chip.write(PORT_A, 0x55);
+        }
+        
+        //chip.write(PORT_A, (chip.read(PORT_B)& 0x01));
+        
+        
+        //with pullups a button hit is a "0" - "~" inverts data to leds
+        mbedleds = ~(myNav & 0x0F); //update leds with nav switch direction inputs
+        if(myNav.fire()) mbedleds = 0x0F; //special all leds on case for fire (center button)
+        //or use - if(myNav[4]==0) mbedleds = 0x0F; //can index a switch bit like this
+        //wait(0.02);
+        
+    }
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Wed Mar 01 16:36:55 2017 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/ad3be0349dc5
\ No newline at end of file