93 lines
1.7 KiB
C
93 lines
1.7 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <wiringPi.h>
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void get_one(int *a, int p) {
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a[p] = digitalRead(p);
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return;
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}
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void get_all(int *a) {
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for (int i = 1; i < 32; i++) {
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a[i] = digitalRead(i);
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}
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return;
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}
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void print_all_quiet(int *a) {
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for (int i = 1; i <= 10; i++) {
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printf("%d ", a[i]);
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}
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putchar('\n');
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for (int i = 11; i <= 20; i++) {
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printf("%d ", a[i]);
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}
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putchar('\n');
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for (int i = 21; i <= 31; i++) {
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printf("%d ", a[i]);
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}
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putchar('\n');
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}
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void print_all_oneline(int *a) {
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for (int i = 1; i <= 31; i++)
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printf("%d ", a[i]);
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putchar('\n');
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}
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void print_all_pretty(int *a) {
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printf("Pins 01-10\t");
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for (int i = 1; i <= 10; i++) {
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printf("%d ", a[i]);
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}
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printf("\nPins 11-20\t");
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for (int i = 11; i <= 20; i++) {
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printf("%d ", a[i]);
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}
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printf("\nPins 21-30\t");
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for (int i = 21; i <= 30; i++) {
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printf("%d ", a[i]);
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}
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printf("\nPin 31:\t\t%d\n", a[31]);
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}
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int main(int argc, char *argv[]) {
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/*
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* pins[] array: GPIO pins only, input only; using WiringPi num scheme
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* 0: placeholder
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* 1-31: WiringPi 1-31
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*/
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int pins[32];
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int pin;
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wiringPiSetupPinType(WPI_PIN_WPI);
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//printf("%i\n", argc);
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switch (argc) {
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case 1: // print everything
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get_all(pins);
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print_all_pretty(pins);
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break;
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case 2: // print 1 pin
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pin = atoi(argv[1]);
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if ((pin >= 1) && (pin <= 31)) {
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get_one(pins, pin);
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printf("%d\n", pins[pin]);
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}
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break;
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default: // no
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fprintf(stderr, "err: too many args (%d)\n", argc-1);
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return EXIT_FAILURE;
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break;
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}
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return EXIT_SUCCESS;
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}
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