修改：信号包独立发包，周期100ms；

布局切换按键，增加开机读取电平状态
2026-09-16 17:00:58 +08:00
parent 3b1e7a7082
commit 8dd17a5b9a
9 changed files with 159 additions and 104 deletions
@@ -19,12 +19,17 @@
 #include <sys/mman.h>
 #include <arpa/inet.h>
 #include <netdb.h>
+#include <sys/ioctl.h>
 #include "confile.h"
 #include "Util.h"

 #define  KEY_EVENT_DEV1_NAME    "/dev/input/event1"
 #define  KEY_EVENT_DEV0_NAME    "/dev/input/event0"
 
+#define KEY_CODE_LAYOUT  0x68              /* 布局开关按键 */
+
+#define SHM_LAYOUT_NAME  "/video_switch"   /* [1] = 布局开关状态，ctrl_pnl 上报面板 byte27 */
+
 #define DEFAULT_MD_LEN 4096
 int switch_video;
 unsigned char key_value;
@@ -79,17 +84,26 @@ void* pkts_worker(void *arg)
 	}
 }
 #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);
+// 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 *switch_memory_open(const char *name) {
+        int fd = shm_open(name, 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()) {
@@ -102,6 +116,21 @@ int get_parameter(struct decoce_param *pparam)
   return 0;
 }

+/* 开机时按键可能已经按住，输入层不会上报"电平没变"的事件，只能主动查一次 */
+static int key_is_down(int fd, unsigned int code)
+{
+	unsigned long keybits[(KEY_MAX / 8 / sizeof(unsigned long)) + 1];
+
+	memset(keybits, 0, sizeof(keybits));
+	if(ioctl(fd, EVIOCGKEY(sizeof(keybits)), keybits) < 0)
+	{
+		printf("---EVIOCGKEY error!---\n");
+		return 0;
+	}
+
+	return (keybits[code / (8 * sizeof(unsigned long))] >>
+			(code % (8 * sizeof(unsigned long)))) & 1UL;
+}


 int main(int argc, char **argv)
@@ -112,7 +141,7 @@ int main(int argc, char **argv)
 	struct input_event key_event  = {0};
 	int ret;	
 	int port;
-	int *light_mode;
+	int *video_mode;
 	int len;
 	pthread_attr_t attr;

@@ -121,7 +150,7 @@ int main(int argc, char **argv)
 	int count_down=0;
 	int flag_down=0;

-	key_fd = open(KEY_EVENT_DEV0_NAME, O_RDONLY);
+	key_fd = open(KEY_EVENT_DEV1_NAME, O_RDONLY);
 	if(key_fd <= 0)
 	{
 		printf("---open %s device error!---\n",KEY_EVENT_DEV1_NAME);
@@ -129,6 +158,11 @@ int main(int argc, char **argv)
 	}

 	//light_mode = switch_memory_open();
+	video_mode = switch_memory_open(SHM_LAYOUT_NAME);
+	
+	video_mode[1] = key_is_down(key_fd, KEY_CODE_LAYOUT);
+
+
 	get_parameter(&param);
 	//printf("---\n");
 	//switch_mode[0] = 0x01;	
@@ -149,6 +183,13 @@ int main(int argc, char **argv)
 		{
 			//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);
+			
+			/* 布局开关：直接跟按键电平，按下=1 松开=0，不做翻转、不留状态 */
+			if(key_event.type == EV_KEY && key_event.code == KEY_CODE_LAYOUT){
+
+				video_mode[1] = key_event.value ? 1 : 0;
+			}
+			
 			if(key_event.type == EV_KEY && key_event.value == 1 )
 			{
 				flag_down=1;
@@ -186,7 +227,10 @@ int main(int argc, char **argv)
 						sprintf(buf,"./pwm.sh %d",count);
 						system(buf);
 						printf("----%s \n",buf);
+
 					}
+					
+
 #if 0
 					if((count_down > 50) && (key_event.code == 0x67)){
                                        	printf("long\n");