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修改：信号包独立发包，周期100ms；

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布局切换按键，增加开机读取电平状态
This commit is contained in:
xu
2026-09-16 17:00:58 +08:00
parent 3b1e7a7082
commit 8dd17a5b9a
9 changed files with 159 additions and 104 deletions
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mpp/sample/pwm/bg_pwm
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mpp/sample/pwm/light_pwm.c
+13 -7
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@@ -22,9 +22,9 @@
#include "confile.h"
#include "Util.h"
#define KEY_EVENT_DEV0_NAME "/dev/input/event0"
#define KEY_EVENT_DEV0_NAME "/dev/input/event1"
//#define KEY_EVENT_DEV0_NAME "/dev/input/event2"
#define DEFAULT_MD_LEN 4096
int switch_video;
@@ -123,12 +123,18 @@ int main(int argc, char **argv)
int flag_down=0;
key_fd = open(KEY_EVENT_DEV0_NAME, O_RDONLY);
if(key_fd <= 0)
// if(key_fd <= 0)
// {
// printf("---open /dev/input/event2 device error!---\n");
// return ret;
// }
if(key_fd < 0)
{
printf("---open /dev/input/event0 device error!---\n");
return ret;
perror("open " KEY_EVENT_DEV0_NAME); // 这一行能直接告诉你 errno
return -1; // 原来 return ret; ret 未初始化，是未定义行为
}
light_mode = switch_memory_open();
get_parameter(&param);
//printf("---\n");
@@ -161,7 +167,7 @@ int main(int argc, char **argv)
}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))
if((key_event.code == 0x66) && (count_down < 25))
{
//key_value = 0x01; //light down
count=count+400;
@@ -170,7 +176,7 @@ int main(int argc, char **argv)
}
}else if((key_event.code == 0x66) && (count_down < 25)){
}else if((key_event.code == 0x67) && (count_down < 25)){
count=count-400;
if(count <= 0){
mpp/sample/pwm/light_pwm_lvds.c
+51 -7
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@@ -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");