/*********************************************************************************
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* Copyright: (C) 2017 LingYun IoT Studio <www.iot-yun.com>
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* All rights reserved.
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*
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* Filename: test_s3c_led.c
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* Description: This file is used to tst s3c_led.c driver
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*
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* Version: 1.0.0(03/15/2014)
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* Author: Guo Wenxue <guowenxue@gmail.com>
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* ChangeLog: 1, Release initial version on "03/15/2014 02:03:22 PM"
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*
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********************************************************************************/
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#include <stdio.h>
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#include <stdarg.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <sys/select.h>
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#define LED_CNT 4
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#define DEVNAME_LEN 10
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#define PLATDRV_MAGIC 0x60
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#define LED_OFF _IO (PLATDRV_MAGIC, 0x18)
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#define LED_ON _IO (PLATDRV_MAGIC, 0x19)
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static inline msleep(unsigned long ms)
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{
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struct timeval tv;
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tv.tv_sec = ms/1000;
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tv.tv_usec = (ms%1000)*1000;
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select(0, NULL, NULL, NULL, &tv);
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}
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int main (int argc, char **argv)
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{
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int i;
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int fd[LED_CNT];
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char dev_name[DEVNAME_LEN]={0,0,0,0};
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for(i=0; i<LED_CNT; i++)
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{
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snprintf(dev_name, sizeof(dev_name), "/dev/led%d", i);
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fd[i] = open(dev_name, O_RDWR, 0755);
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if(fd[i] < 0)
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goto err;
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}
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while(1)
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{
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for(i=0; i<LED_CNT; i++)
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{
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ioctl(fd[i], LED_ON);
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msleep(300);
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ioctl(fd[i], LED_OFF);
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msleep(300);
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}
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}
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for(i=0; i<LED_CNT; i++)
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{
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close(fd[i]);
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}
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return 0;
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err:
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for(i=0; i<LED_CNT; i++)
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{
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if(fd[i] >= 0)
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{
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close(fd[i]);
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}
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}
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return -1;
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} /* ----- End of main() ----- */
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