viewtopic.php?f=31&t=440&p=1682
具体的现象是这样的：当8266刚连接路由器以后，能够接收 UDP 广播，且不丢包；但当出现 pm open,type:2 0 提示（这个提示是什么意思？）后，就开始严重丢包，偶尔能接收到数据包。如果此时改发单播包，也会持续丢包，但过一段时间以后不再丢单播包。若再改为发广播包，则有较大的概率不再丢包。
在如下版本的 SDK 上进行了测试，均出现上述问题：
esp_iot_sdk_v1.3.0_15_08_08
esp_iot_sdk_v1.4.1_15_10_27
esp_iot_sdk_v1.5.0_15_11_27
esp_iot_sdk_v1.5.4_16_05_20
esp_iot_sdk_v1.5.4_16_05_20 with patch
请问这个问题应该如何解决？
Code: Select all
/******************************************************************************
* Copyright 2013-2014 Espressif Systems
*
*******************************************************************************/
#include "ets_sys.h"
#include "os_type.h"
#include "osapi.h"
#include "mem.h"
#include "user_interface.h"
#include "espconn.h"
LOCAL os_timer_t test_timer;
LOCAL struct espconn user_udp_espconn;
const char *ESP8266_MSG = "I'm ESP8266 ";
/*---------------------------------------------------------------------------*/
LOCAL struct espconn ptrespconn;
/******************************************************************************
* FunctionName : user_udp_recv_cb
* Description : Processing the received udp packet
* Parameters : arg -- Additional argument to pass to the callback function
* pusrdata -- The received data (or NULL when the connection has been closed!)
* length -- The length of received data
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR
user_udp_recv_cb(void *arg, char *pusrdata, unsigned short length)
{
os_printf("%s", pusrdata);
}
/******************************************************************************
* FunctionName : user_udp_send
* Description : udp send data
* Parameters : none
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR
user_udp_send(void)
{
char DeviceBuffer[40] = {0};
char hwaddr[6];
struct ip_info ipconfig;
const char udp_remote_ip[4] = { 255, 255, 255, 255};
os_memcpy(user_udp_espconn.proto.udp->remote_ip, udp_remote_ip, 4); // ESP8266 udp remote IP need to be set everytime we call espconn_sent
user_udp_espconn.proto.udp->remote_port = 1112; // ESP8266 udp remote port need to be set everytime we call espconn_sent
wifi_get_macaddr(STATION_IF, hwaddr);
os_sprintf(DeviceBuffer, "%s" MACSTR "!" , ESP8266_MSG, MAC2STR(hwaddr));
espconn_send(&user_udp_espconn, DeviceBuffer, os_strlen(DeviceBuffer));
}
/******************************************************************************
* FunctionName : user_udp_sent_cb
* Description : udp sent successfully
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR
user_udp_sent_cb(void *arg)
{
return;
struct espconn *pespconn = arg;
os_printf("user_udp_send successfully !!!\n");
//disarm timer first
os_timer_disarm(&test_timer);
//re-arm timer to check ip
os_timer_setfn(&test_timer, (os_timer_func_t *)user_udp_send, NULL); // only send next packet after prev packet sent successfully
os_timer_arm(&test_timer, 1000, 0);
}
/******************************************************************************
* FunctionName : user_check_ip
* Description : check whether get ip addr or not
* Parameters : none
* Returns : none
*******************************************************************************/
void ICACHE_FLASH_ATTR
user_check_ip(void)
{
struct ip_info ipconfig;
//disarm timer first
os_timer_disarm(&test_timer);
//get ip info of ESP8266 station
wifi_get_ip_info(STATION_IF, &ipconfig);
if (wifi_station_get_connect_status() == STATION_GOT_IP && ipconfig.ip.addr != 0)
{
os_printf("got ip !!! \r\n");
wifi_set_broadcast_if(STATIONAP_MODE); // send UDP broadcast from both station and soft-AP interface
user_udp_espconn.type = ESPCONN_UDP;
user_udp_espconn.proto.udp = (esp_udp *)os_zalloc(sizeof(esp_udp));
user_udp_espconn.proto.udp->local_port = 50000;//espconn_port(); // set a available port
const char udp_remote_ip[4] = {255, 255, 255, 255};
os_memcpy(user_udp_espconn.proto.udp->remote_ip, udp_remote_ip, 4); // ESP8266 udp remote IP
user_udp_espconn.proto.udp->remote_port = 9000; // ESP8266 udp remote port
espconn_regist_recvcb(&user_udp_espconn, user_udp_recv_cb); // register a udp packet receiving callback
espconn_regist_sentcb(&user_udp_espconn, user_udp_sent_cb); // register a udp packet sent callback
espconn_create(&user_udp_espconn); // create udp
user_udp_send(); // send udp data
}
else
{
if ((wifi_station_get_connect_status() == STATION_WRONG_PASSWORD ||
wifi_station_get_connect_status() == STATION_NO_AP_FOUND ||
wifi_station_get_connect_status() == STATION_CONNECT_FAIL))
{
os_printf("connect fail !!! \r\n");
}
else
{
//re-arm timer to check ip
os_timer_setfn(&test_timer, (os_timer_func_t *)user_check_ip, NULL);
os_timer_arm(&test_timer, 100, 0);
}
}
}
/******************************************************************************
* FunctionName : user_set_station_config
* Description : set the router info which ESP8266 station will connect to
* Parameters : none
* Returns : none
*******************************************************************************/
void ICACHE_FLASH_ATTR
user_set_station_config(void)
{
// Wifi configuration
char ssid[32];
char password[64];
struct station_config stationConf;
os_memset(ssid,0,32);
os_memset(password,0,64);
os_sprintf(ssid,"WSN");
os_sprintf(password,"qazwsxedc");
//need not mac address
stationConf.bssid_set = 0;
//Set ap settings
os_memcpy(&stationConf.ssid, ssid, 32);
os_memcpy(&stationConf.password, password, 64);
wifi_station_set_config(&stationConf);
//wifi_station_connect();
wifi_station_dhcpc_start();
//set a timer to check whether got ip from router succeed or not.
os_timer_disarm(&test_timer);
os_timer_setfn(&test_timer, (os_timer_func_t *)user_check_ip, NULL);
os_timer_arm(&test_timer, 100, 0);
}
// For v1.5.4_16_05_20 with patch
uint32 user_rf_cal_sector_set(void)
{
enum flash_size_map size_map = system_get_flash_size_map();
uint32 rf_cal_sec = 0;
switch (size_map)
{
case FLASH_SIZE_4M_MAP_256_256:
rf_cal_sec = 128 - 5;
break;
case FLASH_SIZE_8M_MAP_512_512:
rf_cal_sec = 256 - 5;
break;
case FLASH_SIZE_16M_MAP_512_512:
case FLASH_SIZE_16M_MAP_1024_1024:
rf_cal_sec = 512 - 5;
break;
case FLASH_SIZE_32M_MAP_512_512:
case FLASH_SIZE_32M_MAP_1024_1024:
rf_cal_sec = 512 - 5;
break;
default:
rf_cal_sec = 0;
break;
}
return rf_cal_sec;
}
/******************************************************************************
* FunctionName : user_init
* Description : entry of user application, init user function here
* Parameters : none
* Returns : none
*******************************************************************************/
void user_init(void)
{
os_printf("SDK version:%s\n", system_get_sdk_version());
//Set softAP + station mode
wifi_set_opmode(STATION_MODE);
wifi_station_disconnect();
wifi_station_dhcpc_stop();
//ESP8266 connect to router
user_set_station_config();
}