03-05 SevenSegDisplay
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(Difference between revisions)
| Line 10: | Line 10: | ||
|'''BAM200E''' | |'''BAM200E''' | ||
|'''BAM200''' | |'''BAM200''' | ||
| + | |'''Used for''' | ||
|- | |- | ||
|D0 | |D0 | ||
| Line 17: | Line 18: | ||
|S2-5 | |S2-5 | ||
|S2-5 | |S2-5 | ||
| + | |Segment A | ||
|- | |- | ||
|D1 | |D1 | ||
| Line 24: | Line 26: | ||
|S2-4 | |S2-4 | ||
|S2-4 | |S2-4 | ||
| + | |Segment B | ||
|- | |- | ||
|D2 | |D2 | ||
| Line 31: | Line 34: | ||
|S3-7 | |S3-7 | ||
|S3-7 | |S3-7 | ||
| + | |Segment C | ||
|- | |- | ||
|D3 | |D3 | ||
| Line 38: | Line 42: | ||
|S3-7 | |S3-7 | ||
|S3-7 | |S3-7 | ||
| + | |Segment D | ||
|- | |- | ||
|D4 | |D4 | ||
| Line 45: | Line 50: | ||
|S8-7 | |S8-7 | ||
|n/p | |n/p | ||
| + | |Segment E | ||
|- | |- | ||
|D5 | |D5 | ||
| Line 52: | Line 58: | ||
|S3-8 | |S3-8 | ||
|S3-8 | |S3-8 | ||
| + | |Segment F | ||
|- | |- | ||
|D6 | |D6 | ||
| Line 59: | Line 66: | ||
|S3-9 | |S3-9 | ||
|S3-9 | |S3-9 | ||
| + | |Segment G | ||
|- | |- | ||
|D7 | |D7 | ||
| Line 66: | Line 74: | ||
|S4-6 | |S4-6 | ||
|S4-6 | |S4-6 | ||
| + | |Segment DP | ||
|- | |- | ||
|} | |} | ||
Current revision as of 17:54, 17 September 2014
This example demonstrates the BusOut function to display digits on a 7-segment display with a common cathode. It displays digits 0, 1, 2, 3 in turn.
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 03-05
/*Program Example 3.5: Simple demonstration of 7-segment display. Display digits 0, 1, 2, 3 in turn.
*/
#include "mbed.h"
BusOut display(D0,D1,D2,D3,D4,D5,D6,D7); // segments a,b,c,d,e,f,g,dp
int main()
{
while(1) {
for(int i=0; i<4; i++) {
switch (i) {
case 0:
display = 0x3F;
break; //display 0
case 1:
display = 0x06;
break; //display 1
case 2:
display = 0x5B;
break;
case 3:
display = 0x4F;
break;
} //end of switch
wait(0.2);
} //end of for
} //end of while
}
The following image shows the built circuit on a BAM210E.
