46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
#include <LPC17xx.h>
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int main(void){
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unsigned long i, j, n;
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unsigned int x;
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unsigned long number = 0;
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unsigned long count = 0;
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unsigned char seven_seg[16] = {
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0x3F, 0x06, 0x5B, 0x4F,
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0x66, 0x6D, 0x7D, 0x07,
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0x7F, 0x6F, 0x77, 0x7C,
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0x39, 0x5E, 0x79, 0x71
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};
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LPC_PINCON->PINSEL0 = 0;
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LPC_GPIO0->FIODIR |= (0xFF << 4);
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LPC_PINCON->PINSEL3 = 0;
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LPC_GPIO1->FIODIR |= (0x0F << 23);
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LPC_GPIO0->FIODIR &= ~(1 << 21); // SWITCH MAPS to 7TH PIN FROM CNC (or CNX depending on wiring)
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while (1) {
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n = number;
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x = LPC_GPIO0->FIOPIN & (1 << 21);
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for (i = 0; i < 4; i++) {
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LPC_GPIO1->FIOCLR = (0x0F << 23);
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LPC_GPIO1->FIOSET = (i << 23);
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LPC_GPIO0->FIOCLR = (0xFF << 4);
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LPC_GPIO0->FIOSET = ((unsigned long)seven_seg[n % 10] << 4);
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n = n / 10;
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for (j = 0; j < 1000; j++);
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LPC_GPIO0->FIOCLR = (0xFF << 4);
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}
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count++;
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if (count == 1000) {
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count = 0;
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if (x) {
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number = (number + 1) % 10000;
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} else {
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if (number == 0) number = 9999;
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else number--;
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}
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}
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}
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}
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