gpio_test.zip_GPIO_GPIO_Test_GPIO测试_gpio测试软件

#include <sys/types.h> #include <sys/stat.h> #include <stdio.h> #include <fcntl.h> #include <stdlib.h> #include <unistd.h> #include <string.h> #include <sys/ioctl.h> #include <sys/mman.h> #include <asm/page.h> #include <linux/types.h> #include "at6600_gpio_ioctl.h" int main() { int fd=0; int gpio_number, gpio_value; int data1, data2[2]; int op, cont; fd = open("/dev/gpio0",O_RDWR); if(fd==-1) { printf("can't open gpio device file\n"); return 0; } cont = 1; while(cont) { printf( " 1 -- read gpio 2 -- set gpio\n" " 0 -- exit\n"); printf("Input Op:"); scanf("%d", &op); switch (op) { case 0: cont = 0; break; case 1: printf("Input gpio number: "); scanf("%d", &gpio_number); if(ioctl(fd, GPIO_CFG_IN, &gpio_number) != 0) { printf("GPIO_CFG_IN ioctl failed.\n"); break; } data1 = gpio_number; if(ioctl(fd, GPIO_GET_IN, &data1) != 0) { printf("GPIO_GET_IN ioctl failed.\n"); break; } gpio_value = data1; printf("Get GPIO %02d is %s\n", gpio_number, gpio_value?"High":"Low"); break; case 2: printf("Input gpio number: "); scanf("%d", &gpio_number); printf("Input gpio value: "); scanf("%d", &gpio_value); if(ioctl(fd, GPIO_CFG_OUT, &gpio_number) != 0) { printf("GPIO_CFG_OUT ioctl failed.\n"); break; } data2[0] = gpio_number; data2[1] = gpio_value; if(ioctl(fd, GPIO_SET_OUT, data2) != 0) { printf("GPIO_SET_OUT ioctl failed.\n"); break; } printf("Set GPIO %02d done\n", gpio_number); break; default: break; } } close(fd); }