Page 142 - ARM Based Microcontroller Projects Using MBED

128 7. USING THE Mbed WITH SIMPLE PROJECTS

/***********************************************************************

7-SEGMENT LED COUNTER
=====================
In this evrsion of teh program a function is used to display the number

Author: Dogan Ibrahim
Date : August 2018
File : SevenSeg-3
************************************************************************/
#include "mbed.h"

PortOut Segments(PortC, 0xFF);
int LEDS[] = {0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};
//
// This function displays number N on the 7-Segment LED
//
void Display(int N)
{
Segments = LEDS[N];
}

//
// MAIN program
//
int main()
{
int CNT = 0;

while(1)
{
Display(CNT);
wait(1.0);
CNT++;
if(CNT == 10)CNT = 0;
}
}
FIG. 7.74 Another modified program.

7.16.11 Suggestions for Additional Work

Modify the program given in Fig. 7.72 to display letters L and E alternately on the
7-segment display.