56 lines
1010 B
C
56 lines
1010 B
C
/*
|
|
* 设置PIN脚为1或0电位(电压)
|
|
*
|
|
*/
|
|
|
|
#include <wiringPi.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <type.h>
|
|
#include <ctype.h>
|
|
|
|
|
|
static int is_num(char *str)
|
|
{
|
|
int i, len;
|
|
for (i = 0, len = strlen(str); i < len; i++) {
|
|
if (isdigit(str[i]) == 0) {
|
|
printf("不是数字\n");
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
if (argc != 3) {
|
|
printf("Parameter error.\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (is_num(argv[1]) == 1) {
|
|
printf("Parameter error, parameter 1 is PIN pin value\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (is_num(argv[2]) == 1) {
|
|
printf("Parameter error, parameter 2 is true or false\n");
|
|
exit(1);
|
|
}
|
|
|
|
int pin = atol(argv[1]);
|
|
wiringPiSetup();
|
|
|
|
pinMode(pin, OUTPUT);
|
|
if (atol(argv[2]) == 1) {
|
|
digitalWrite(pin, HIGH);
|
|
}
|
|
if (atol(argv[2]) == 0) {
|
|
digitalWrite(pin, LOW);
|
|
}
|
|
return atol(argv[2]);
|
|
}
|