35 lines
858 B
C
35 lines
858 B
C
|
#include <avr/io.h>
|
||
|
|
#include <stdbool.h>
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Display pins should be mapped like this:
|
||
|
|
* a b c d e f g DP
|
||
|
|
* 0 1 2 3 4 5 6 7
|
||
|
|
*
|
||
|
|
* TODO pass register as parameter
|
||
|
|
*/
|
||
|
|
|
||
|
|
void set_display_raw(volatile uint8_t * header, uint8_t data) {
|
||
|
|
*header = data;
|
||
|
|
}
|
||
|
|
|
||
|
|
void set_display(volatile uint8_t * header, uint8_t value, bool period) {
|
||
|
|
uint8_t byte = period << 7;
|
||
|
|
|
||
|
|
switch(value) {
|
||
|
|
case 0: byte |= 0x3f; break;
|
||
|
|
case 1: byte |= 0x06; break;
|
||
|
|
case 2: byte |= 0x5b; break;
|
||
|
|
case 3: byte |= 0x4f; break;
|
||
|
|
case 4: byte |= 0x66; break;
|
||
|
|
case 5: byte |= 0x6d; break;
|
||
|
|
case 6: byte |= 0x7d; break;
|
||
|
|
case 7: byte |= 0x07; break;
|
||
|
|
case 8: byte |= 0x7f; break;
|
||
|
|
case 9: byte |= 0x6f; break;
|
||
|
|
default: byte &= 0x10000000; break;
|
||
|
|
}
|
||
|
|
|
||
|
|
set_display_raw(header, byte);
|
||
|
|
}
|