Files
2023-06-14 18:05:04 +08:00

93 lines
1.9 KiB
C

#include "lwip/opt.h"
#include "lwip/sys.h"
#include "lwip/api.h"
#include "debug.h"
#include "lwip/tcp.h"
#include "board.h"
#include "udp.h"
#include "dev_flash.h"
typedef struct{
struct netconn *conn;
struct netbuf *buf;// 接收的数据
ip_addr_t dst_ip;
int dst_port;
}self_def;
void *tappend(void *p,void *del);
static void udp_thread(void *arg)
{
self_def *s=arg;
err_t err;
LWIP_UNUSED_ARG(arg);
ip_addr_t dst;
const sys_param_def *par=sys_param();
IP4_ADDR(&dst,par->host_ip[0],par->host_ip[1],par->host_ip[2],par->host_ip[3]);
while (1) {
s->conn = netconn_new(NETCONN_UDP);
err=netconn_bind(s->conn, IP_ADDR_ANY, 7777);
if (err == ERR_OK) {
void *data;
u16_t len;
while ((err = netconn_recv(s->conn, &s->buf)) == ERR_OK) {
do {
netbuf_data(s->buf, &data, &len);
s->dst_ip=*netbuf_fromaddr(s->buf);
s->dst_port=netbuf_fromport(s->buf);
array_def *arr=arr_creat();
arr_appends(arr,data,len);
arr_append(arr,0);
// 字符数据命令字为0
emit udp_recv_signal(s,"string",0,arr_temp(arr),"ok");
} while (netbuf_next(s->buf) >= 0);
netbuf_delete(s->buf);
}
}
else
{
DBG_LOG("udp:err=%d",err);
}
netconn_close(s->conn);
netconn_delete(s->conn);
sys_msleep(1000);
}
}
static int myudp_init(void)
{
self_def *s=calloc(1,sizeof(self_def));
sys_thread_new("udp_thread", udp_thread, s, 2048, 29);
app_variable("udp",s,0);
return 0;
}
app_init_export(myudp_init)
void udp_reply_call(void *obj,uint8_t cmd,array_def *data)
{
self_def *s=obj;
err_t err;
if(s->dst_port!=0){
struct netbuf *sbuf=netbuf_new();
netbuf_ref(sbuf,arr_data(data),arr_length(data));
err=netconn_sendto(s->conn,sbuf,&s->dst_ip,s->dst_port);
netbuf_delete(sbuf);
}
}