52 lines
960 B
C
52 lines
960 B
C
/*
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* 设置PIN脚为1或0电位(电压)
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*
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*/
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#include <wiringPi.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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int is_num(const char *str) {
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while (*str != '\0') {
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if (!isdigit(*str)) {
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return 0;
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}
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str++;
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}
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return 1;
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}
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int main(int argc, char *argv[]) {
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if (argc != 3) {
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printf("Error: Invalid number of arguments.\n");
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printf("Usage: %s PIN VALUE\n", argv[0]);
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exit(1);
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}
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int pin = atoi(argv[1]);
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if (!is_num(argv[1]) || (pin < 0)) {
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printf("Error: Invalid PIN value.\n");
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exit(1);
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}
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int value = atoi(argv[2]);
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if (!is_num(argv[2]) || (value != 0 && value != 1)) {
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printf("Error: Invalid value. Please enter 0 or 1.\n");
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exit(1);
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}
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wiringPiSetup();
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pinMode(pin, OUTPUT);
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if (digitalRead(pin) != value) {
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digitalWrite(pin, value);
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}
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return value;
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} |