- 在用WEB访问时，无法收到回复，排查后发现是因为访问时，建立了多条链接，但程序上，只用了最原始那一个espconn，导致发到错误的链路上
- 在recv回调中，马上返回大数据，偶尔会有丢失
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recv后，保存当前的espconn，之后数据返回到目前这个conn
void ICACHE_FLASH_ATTR static server_recv(void *arg,char *pdata,unsigned short len){ //os_printf("收到PC发来的数据：%s.rn",pdata); //espconn_sent((struct espconn *)arg,"已经收到rn",strlen("已经收到rn")); //串口数据透传 //GPIO_OUTPUT_SET(GPIO_ID_PIN(12),1); //os_printf("server data = %d %02x %02x %02x %02x rn",len,pdata[0],pdata[1],pdata[2],pdata[3]); //uart0_tx_buffer(pdata,len); //GPIO_OUTPUT_SET(GPIO_ID_PIN(12),0); connect_conn = arg; webserver_recv(&web_conn,pdata,len); }static void ICACHE_FLASH_ATTR data_send(void *arg, bool responseOK, char *psend) { uint16 length = 0; char *pbuf = NULL; char httphead[256]; struct espconn *ptrespconn = arg; int *pfd=arg; int fd=*pfd; os_memset(httphead, 0, 256); if (responseOK) { os_sprintf(httphead, "HTTP/1.0 200 OKrnContent-Length: %drnServer: lwIP/1.4.0rn", psend ? strlen(psend): 0); if (psend) { os_sprintf(httphead + strlen(httphead), "Content-type: text/html; charset=utf-8rnPragma: no-cachernrn"); length = strlen(httphead) + strlen(psend); pbuf = (char *)os_zalloc(length + 1); os_memcpy(pbuf, httphead, strlen(httphead)); os_memcpy(pbuf + strlen(httphead), psend, strlen(psend)); } else { os_sprintf(httphead + strlen(httphead), "n"); length = strlen(httphead); } } else { os_sprintf(httphead, "HTTP/1.0 400 BadRequestrnContent-Length: 0rnServer: lwIP/1.4.0rnn"); length = strlen(httphead); } if (psend) { //new_tcp_send(fd,pbuf,length); espconn_sent(ptrespconn, pbuf, length); os_printf("sendrnrn%srnrn",pbuf); } else { //new_tcp_send(fd,httphead,length); espconn_sent(ptrespconn, httphead, length); } if (pbuf) { os_free(pbuf); pbuf = NULL; } } -
定时器100ms后再发送数据
void web_send_timer_cb() { //static uint8_t time = 0; data_send(connect_conn, true, html); os_free(html); html = NULL; //os_timer_arm(&web_send_timer,200,0); }html = (char *)os_zalloc(WEBCONFIG_SIZE); if(html == NULL){ os_printf("os_zalloc error!rn"); goto _temp_exit; } #if 1 os_memset(html,0,WEBCONFIG_SIZE); os_strcpy(html,(char *)WEB_CONFIG); #else ret = spi_flash_read(964*1024, (uint32 *)html, WEBCONFIG_SIZE); // start address:0x10000 + 0xC0000 if(ret != SPI_FLASH_RESULT_OK){ os_printf("spi_flash_read err:%drn", ret); os_free(html); html = NULL; goto _temp_exit; } #endif html[WEBCONFIG_SIZE] = 0; // put 0 to the end os_timer_disarm(&web_send_timer); os_timer_setfn(&web_send_timer, web_send_timer_cb , NULL); //a demo to process the data in uart rx buffer os_timer_arm(&web_send_timer,100,0);
