Diff: main.cpp

Revision:

0:209b9385be7b

Child:

1:c07d099d8e31

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Jul 18 14:47:52 2013 +0000
@@ -0,0 +1,69 @@
+/* Test of FRDM-KL25z RGB LED and Serial out to PC.
+ * This program blinks the LED through the series of colors
+ * red, greeen, and blue, displaying each for 1 second, with
+ * a 1 second off period between each color. As it makes each 
+ * change in the status of the LED, it sends a message to the 
+ * pc serial port over the USB programming connection. The 
+ * pattern repeats 5 times, then two short white flashes are 
+ * displayed by turning all threee LEDs on and off at once, and
+ * a final message is sent to the serial port.
+ *
+ * Tested from OSX 10.8.4. To find the serial port device, 
+ * launch Terminal, then type:
+ * 
+ * ls /dev/tty.usbmodem* 
+ *
+ * It will return something like /dev/tty.usbmodem1d22
+ * To change Terminal to connect to the serial port, use the screen
+ * command, specifying the path returned by ls and the baud rate:
+ *
+ * screen /dev/tty.usbmodem1d22 9600
+ * 
+ * As a shortcut, if you have just one serial device connected, you
+ * can skip the first command and type the second command as far as 
+ * tty.usb and hit the tab key and it will autocomplete. 
+ * Once screen is running, type Ctrl-a then ? for a list of available 
+ * commands.
+ */
+ 
+#include "mbed.h"
+
+DigitalOut redLED(LED_RED);               // Define digital outputs for each LED color
+DigitalOut greenLED(LED_GREEN);
+DigitalOut blueLED(LED_BLUE);
+Serial pc(USBTX, USBRX);                  // Declare the serial port
+
+int main() {
+    pc.baud (9600);                       // Set the baud rate for the serial connection
+    redLED = 1;                           // This a common cathode RGB LED, with the cathodes connected
+    greenLED = 1;                         // to 1. Thus, to turn a color off you counterintuitively set
+    blueLED = 1;                          // it to 1, so there is no voltage difference across the LED
+    for (int i = 1; i <= 5; i++) {        // Do 5 times:
+       redLED = 0;                        // Turn the red LED on
+       pc.printf("Red LED ON \n\r");      // Send a status message
+       wait(1.0);                         // Wait 1.0 seconds
+       redLED = 1;                        // Turn the red LED off
+       pc.printf("Red LED OFF \n\r");     // Send a status message
+       wait(1.0);                         // Wait 1.0 seconds
+       greenLED = 0;                      // Repeat the above for the green LED
+       pc.printf("Green LED ON \n\r"); 
+       wait(1.0);
+       greenLED = 1;
+       pc.printf("Green LED OFF \n\r");
+       wait(1.0);
+       blueLED = 0;                       // Repeat for the blue LED
+       pc.printf("Blue LED ON \n\r"); 
+       wait(1.0);
+       blueLED = 1;
+       pc.printf("Blue LED OFF \n\r");
+       wait(1.0);
+   }
+   redLED = greenLED = blueLED = 0;       // Give a short double-flash of white
+   wait(0.25);
+   redLED = greenLED = blueLED = 1;
+   wait(0.25);
+   redLED = greenLED = blueLED = 0;
+   wait(0.25);
+   redLED = greenLED = blueLED = 1;       // Leave the LED off at the end
+   pc.printf("Goodbye \n\r");             // Send a farewell message  
+}
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