06-01 SevenSegCounter
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[[Image:BAM210_03_05_SCH.png|center|alt=BAM210|frame|<div align="center">'''Schematic for example 06-01''']] | [[Image:BAM210_03_05_SCH.png|center|alt=BAM210|frame|<div align="center">'''Schematic for example 06-01''']] | ||
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/* Program Example 6.1: seven-segment display counter | /* Program Example 6.1: seven-segment display counter | ||
*/ | */ | ||
Current revision as of 18:13, 17 September 2014
This example displays a count 0-9 on a seven segment display.
The signals used for this example are listed below:
| Signal | LPC4330 PIN NAME | BAM210E | BAM210 | BAM200E | BAM200 | Used for |
| D0 | P6_5 | J9-1 | J9-1 | S2-5 | S2-5 | Segment A |
| D1 | P6_4 | J9-2 | J9-2 | S2-4 | S2-4 | Segment B |
| D2 | P1_7 | J9-3 | J9-3 | S3-7 | S3-7 | Segment C |
| D3 | P4_0 | J9-3 | J9-3 | S3-7 | S3-7 | Segment D |
| D4 | P6_9 | J9-4 | J9-4 | S8-7 | n/p | Segment E |
| D5 | P5_5 | J9-5 | J9-5 | S3-8 | S3-8 | Segment F |
| D6 | P5_7 | J9-6 | J9-6 | S3-9 | S3-9 | Segment G |
| D7 | P7_6 | J9-7 | J9-7 | S4-6 | S4-6 | Segment DP |
The following schematic can be used to build the circuit with a BAM210E or BAM210.
Schematic for example 06-01
/* Program Example 6.1: seven-segment display counter
*/
#include "mbed.h"
BusOut Seg1(D0,D1,D2,D3,D4,D5,D6,D7); // A,B,C,D,E,F,G,DP
char SegConvert(char SegValue); // function prototype
char A=0; // declare variables A and B
char B;
int main() { // main program
while (1) { // infinite loop
B=SegConvert(A); // Call function to return B
Seg1=B; // Output B
A++; // increment A
if (A>0x09){ // if A > 9 reset to zero
A=0;
}
wait(0.5); // delay 500 milliseconds
}
}
char SegConvert(char SegValue) { // function 'SegConvert'
char SegByte=0x00;
switch (SegValue) { //DP G F E D C B A
case 0 : SegByte = 0x3F;break; // 0 0 1 1 1 1 1 1 binary
case 1 : SegByte = 0x06;break; // 0 0 0 0 0 1 1 0 binary
case 2 : SegByte = 0x5B;break; // 0 1 0 1 1 0 1 1 binary
case 3 : SegByte = 0x4F;break; // 0 1 0 0 1 1 1 1 binary
case 4 : SegByte = 0x66;break; // 0 1 1 0 0 1 1 0 binary
case 5 : SegByte = 0x6D;break; // 0 1 1 0 1 1 0 1 binary
case 6 : SegByte = 0x7D;break; // 0 1 1 1 1 1 0 1 binary
case 7 : SegByte = 0x07;break; // 0 0 0 0 0 1 1 1 binary
case 8 : SegByte = 0x7F;break; // 0 1 1 1 1 1 1 1 binary
case 9 : SegByte = 0x6F;break; // 0 1 1 0 1 1 1 1 binary
}
return SegByte;
}
The following image shows the built circuit on a BAM210E.
