Max Amani
/
Bootcamp-HelloWorld_LED_Count
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Revision 1:1286125a89ba, committed 2013-10-17
- Comitter:
- amx_192
- Date:
- Thu Oct 17 02:07:19 2013 +0000
- Parent:
- 0:2a6f2b9e790d
- Commit message:
- This is the HW#1
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/main.cpp Sat Oct 12 20:34:07 2013 +0000
+++ b/main.cpp Thu Oct 17 02:07:19 2013 +0000
@@ -1,38 +1,110 @@
+/* Program: Bootcamp-HelloWorld_LED_Count.cpp
+ * Author: Max Amani
+ * Description:This program uses the LCP1768 Microcontroller 4 LEDs to count up from 0 to 15 and reset to 0
+ * When a pin connected to the LED is high, the LED lights up
+ */
#include "mbed.h"
-DigitalOut red(LED1);
-DigitalOut blue(LED2);
-DigitalOut green(LED3);
-DigitalOut yellow(LED4);
+#define MAX_COUNT 16
+
+BusOut busLeds (LED4,LED3,LED2,LED1);
+
+//PROTOTYPES
+void delay(void);
+void displayCount(const unsigned char hex);
+
int main() {
- int count[16][4] = {{0,0,0,1},{0,0,1,0},{0,0,1,1},{0,1,0,0},
- {0,1,0,1},{0,1,1,0},{0,1,1,1},{1,0,0,0},
- {1,0,0,1},{1,0,1,0},{1,0,1,1},{1,1,0,0},
- {1,1,0,1},{1,1,1,0},{1,1,1,1},{0,0,0,0}};
+
+ int i;
while(1) {
- int i;
- int j;
- for ( i = 0 ; i < 16 ; i++ )
- {
- for ( j = 0 ; j < 4 ; )
- {
- red = count[i][j];
- printf("%c\n",count[i][j]);
- blue = count[i][j+1];
- printf("%c",count[i][j+1]);
- green = count[i][j+2];
- printf("%c",count[i][j+2]);
- yellow = count[i][j+3];
- printf("%c",count[i][j+3]);
- wait(3.0);
- }
-
- }
- //red = blue = green = yellow = 0;
- //wait(1.0);
- //red = 1;
- //blue = green = yellow = 0;
- //myled = 0;
- //wait(0.2);
+
+ for ( i = 0 ; i < MAX_COUNT ; i++ )
+ {
+
+ switch (i){
+ case 0: busLeds = ~0xF;
+ displayCount(0x0);
+ delay();
+ break;
+ case 1: busLeds = 0x1;
+ displayCount(0x1);
+ delay();
+ break;
+ case 2: busLeds = 0x2;
+ displayCount(0x2);
+ delay();
+ break;
+ case 3: busLeds = 0x3;
+ displayCount(0x3);
+ delay();
+ break;
+ case 4: busLeds = 0x4;
+ displayCount(0x4);
+ delay();
+ break;
+ case 5: busLeds = 0x5;
+ displayCount(0x5);
+ delay();
+ break;
+ case 6: busLeds = 0x6;
+ displayCount(0x6);
+ delay();
+ break;
+ case 7: busLeds = 0x7;
+ displayCount(0x7);
+ delay();
+ break;
+ case 8: busLeds = 0x8;
+ displayCount(0x8);
+ delay();
+ break;
+ case 9: busLeds = 0x9;
+ displayCount(0x9);
+ delay();
+ break;
+ case 10: busLeds = 0xA;
+ displayCount(0xA);
+ delay();
+ break;
+ case 11: busLeds = 0xB;
+ displayCount(0xB);
+ delay();
+ break;
+ case 12: busLeds = 0xC;
+ displayCount(0xC);
+ delay();
+ break;
+ case 13: busLeds = 0xD;
+ displayCount(0xD);
+ delay();
+ break;
+ case 14: busLeds = 0xE;
+ displayCount(0xE);
+ delay();
+ break;
+ case 15: busLeds = 0xF;
+ displayCount(0xF);
+ delay();
+ break;
+ }
+ }
+ }
+}
+// delay function
+void delay(){
+ wait(1.0);
+}
+//Function that convert a hex number into a binary and append 'b' at the end
+void displayCount(const unsigned char hex){
+
+ unsigned char i , c = hex; // hex value to convert in binary
+ unsigned char Mask = 1 << 3; // Mask value is set to 8 = 2^(n-1) = 1<< 3 .
+ // Number of bits in the binary value
+ for ( i = 1 ; i <= 4 ; i++ )
+ {
+ putchar(c & Mask ? '1' : '0');
+ c <<= 1;
}
-}
+ putchar('b');
+ putchar('\n');
+}
\ No newline at end of file