AT9G45的pwm驱动有有关问题,快来解救小弟

AT9G45的pwm驱动有问题,快来解救小弟.

 AT9G45的pwm,头文件

#include <stdio.h>#include "at91_ioctl.h"int main(int argc, char** argv){    int fp;    fp = open("/dev/mypwm", 0);    if(fp < 0)    {        printf("Open error!\n");        return -1;    }    ioctl(fp, atoi(argv[1]));    close(fp);    return 0;}