hisi_SS524V100_SDK/mpp/sample/pwm/light_pwm.c

#include <linux/input.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdint.h>
#include <pthread.h> 
#include "keyboard.h"
#include <unistd.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <string.h>  
#include <sys/socket.h>  
#include <netinet/in.h>  
#include <arpa/inet.h>  
#include <netdb.h>  
#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <arpa/inet.h>
#include <netdb.h>
#include "confile.h"
#include "Util.h"

//#define  KEY_EVENT_DEV0_NAME    "/dev/input/event0"
#define  KEY_EVENT_DEV0_NAME    "/dev/input/event2"
 
#define DEFAULT_MD_LEN 4096
int switch_video;
unsigned char key_value;

static pthread_t pkts_thread;
int count=0;
int osd_on=0;

 int socket_descriptor;
        struct sockaddr_in address;


void * memmap(unsigned int phy_addr, unsigned int size);
#if 0
void* pkts_worker(void *arg)
{

        printf("pkts_worker...\n");

	int anjian_switch=0;

	uint32_t ulOld;
        int read_key;
        void* pMem  = NULL;

	
        while(1)
        {

	//	pMem = memmap(0x12150000, DEFAULT_MD_LEN); //gpio0
	///	ulOld = *(uint32_t *)((char *)pMem + 0x3FC); //data
	//	read_key = (ulOld &0x04)>>2; //get gpio0_2 value   0:FA 1:FE
	  //      printf("read_key: %d\n\r",read_key);
	//	if(read_key==0x0)
	//	{
	//		mode=0;
			//count=1;
			//printf("key %d\n",key);
	//	}else
	//		mode= -1;

		//	printf("mode %d\n",mode);
		anjian_switch =count;
		if(anjian_switch ==(switch_video+1)){
                    anjian_switch =1;
                }

		printf("-------------%x\n",anjian_switch);
		sendto(socket_descriptor,&anjian_switch,4,0,(struct sockaddr *)&address,sizeof(address));
		sleep(2);
	
	}
}
#endif
int *switch_memory_open(void) {
        char buf[128];
        int fd;
        sprintf(buf, "/switch_mode");
        fd = shm_open(buf, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR);
        if(fd < 0) { perror("shm_open"); exit(1); }
         if (ftruncate(fd, 4096) == -1) { perror("ftruncate"); exit(1); }
        int *retval = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
        return retval;
}

int get_parameter(struct decoce_param *pparam)
{
   if(confile_init()) {
        printf("config file parse filed!\n");
        return -1;
   }
   pparam->light     = get_conf_int("light", 0);
   //pparam->osd_on     = get_conf_int("osd_on", 0);
   printf("light %d \n",pparam->light);
   return 0;
}



int main(int argc, char **argv)
{

	 unsigned char buf[1024];
	int key_fd  = 0;
	struct input_event key_event  = {0};
	int ret;	
	int port;
	int *light_mode;
	int len;
	pthread_attr_t attr;

	struct decoce_param param;

	int count_down=0;
	int flag_down=0;

	key_fd = open(KEY_EVENT_DEV0_NAME, O_RDONLY);
	if(key_fd <= 0)
	{
		printf("---open /dev/input/event0 device error!---\n");
		return ret;
	}

	light_mode = switch_memory_open();
	get_parameter(&param);
	//printf("---\n");
	//switch_mode[0] = 0x01;	
	light_mode[3] = param.light;	
	count = param.light;
	//switch_mode[1] = param.osd_on;	
	//osd_on =  param.osd_on;
	
	sprintf(buf,"./pwm.sh %d",count);
	system(buf);
	printf("----%s \n",buf);
	while(1)
	{
		ret = read(key_fd, &key_event, sizeof(key_event));
		
						//printf("%d\n\r",ret);
		if(ret)
		{
			//printf("key_event.type %d EV_KEY %d \n",key_event.type,EV_KEY);
			//printf("key_event.value %d key_event.code %d count_down %d\n",key_event.value, key_event.code,count_down);
			if(key_event.type == EV_KEY && key_event.value == 1 )
			{
				flag_down=1;
				count_down=1;
				
			}else if(key_event.type == EV_KEY && key_event.value == 2){
				count_down++;

			}else if(key_event.type == EV_KEY && key_event.value == 0){
			
				if(flag_down == 1){  //短按
					if((key_event.code == 0x67) && (count_down < 25))
					{
						//key_value = 0x01;    //light down
						count=count+400;
						if(count >= 2000){
							count=2000;
						}
						
						
					}else if((key_event.code == 0x66) && (count_down < 25)){
						 
						count=count-400;
						if(count <= 0){
							count=0;
						 }
					
					}
				//	set_conf_int("sdi_switch",light_mode[0]);
					set_conf_int("light",count);
					save_confile("/root/light_bg.cfg");
					light_mode[3] = count;
					sprintf(buf,"./pwm.sh %d",count);
					system(buf);
					printf("----%s \n",buf);

					if((count_down > 50) && (key_event.code == 0x67)){
                                        	printf("long\n");
                                        	osd_on ^= 0x01;
                                        	//switch_mode[1] = osd_on;
                        		//              count_down=0;
                                	
						//set_conf_int("osd_on",osd_on);
						//save_confile("/root/decode.cfg");
					}else if((count_down > 50) && (key_event.code == 0x66)){

						osd_on ^= 0x01;
					}

	
				
				//	count_down=0;
				}

				
				flag_down =0;
				count_down =0;		

			}
		}	

	}
 
}