Diff: LED.cpp

Revision:

0:85829f7bbe62

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LED.cpp	Mon Jun 04 13:51:43 2012 +0000
@@ -0,0 +1,51 @@
+/*
+ * PROGRAM RESPONSIBLE FOR open/close door.
+ * ^^^^^^^ ^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^
+ *
+ * FILE NAME: LED.cpp
+ * USAGE: program that control 16 LED's that indicate the position of the doors.
+ */
+
+
+/*
+* including the wanted library files.
+*/
+#include "mbed.h"
+#include "LED.h"
+#include "main.h"
+
+/*--------------------------*\
+ *  defineding the variables*
+\*--------------------------*/
+int floor_level;
+int LED_order;
+
+DigitalOut latch(p8); //  control a digital output pin..
+
+SPI spi(p5, p6, p7); // SPI bus master; mosi, miso, sclk.
+Ticker door_timer; /* using ticker class which repeatedly call a function*/
+
+void open_close_doors ( int f) { // a function that defined the number of elements and selecting a floor
+    floor_level=f; // for selecting the wanted floor (0, 1)
+    LED_order=28; // max. number of the elements
+}
+
+void doors (void) { // a function responsible of turning the LEDs on/off
+    if (LED_order) {
+        spi.write(door_light[floor_level][--LED_order]); //Write to the SPI Slave; Send the command.
+        latch=1;// Deselect the device
+        latch=0;// Select the device by seting chip select low
+        if (LED_order==0) // when the LED order reach 0, a new event will be called (timeout)
+            new_event(timeout);
+    }
+}
+
+void doors_start (void) {// a ticker function for the LED doors.
+    spi.format(16,0);
+    latch =0;// Select the device by seting chip select low
+    spi.write(0xFFFF); //Write to the SPI Slave; Send (0xFFFF)the command.
+    latch=1;// Deselect the device
+    latch=0;
+    LED_order=0;
+    door_timer.attach(&doors,0.2);// repeatedly call "doors" function.
+}
\ No newline at end of file