?? test_iic_led.c
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#include <unistd.h>#include <linux/fs.h>#include <sys/types.h>#include <sys/stat.h>#include <fcntl.h>#include <stdio.h>#define LED_SLAVE_ADD 0x70int main(){ int fd = open("/dev/led",O_RDWR); //can read and write char null_buf[5]={-1,-1,-1,-1,-1}; if (fd == -1) { perror("can't open device led_board!"); exit(1); } while(1) { write(fd,null_buf,5); sleep(1); } close(fd);}?? 快捷鍵說(shuō)明
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