emwin VNC

wgp2590 发表于 2020-9-25 13:06:35

使用freeRTOS+LWIP+emwin，VNC功能比较卡，有时候能连上，有时候连不上，
网络单独自发自收回环测试没有问题，VNC需要注意什么吗？

以下是我的GUI_VNC_X_StartServer.c 文件，那位大佬遇到过？

/*********************************************************************
*             SEGGER Microcontroller GmbH & Co. KG             *
*    Solutions for real time microcontroller applications    *
**********************************************************************
*                                                                *
*    (c) 1996 - 2012SEGGER Microcontroller GmbH & Co. KG    *
*                                                                *
*    Internet: www.segger.com Support:support@segger.com *
*                                                                *
**********************************************************************

** emWin V5.16 - Graphical user interface for embedded applications **
AllIntellectual Property rightsin the Software belongs toSEGGER.
emWin is protected byinternational copyright laws.Knowledge of the
source code may not be used to write a similar product.This file may
only be used in accordance with the following terms:

The software has been licensed toARM LIMITED whose registered office
is situated at110 Fulbourn Road,Cambridge CB1 9NJ,England solely
forthepurposesofcreatinglibrariesforARM7, ARM9, Cortex-M
series,and Cortex-R4 processor-baseddevices,sublicensedand
distributed as part of theMDK-ARMProfessionalunder the terms and
conditionsofthe EndUserLicensesuppliedwiththeMDK-ARM
Professional.
Full source code is available at: www.segger.com

We appreciate your understanding and fairness.
----------------------------------------------------------------------
File    : GUI_VNC_X_StartServer.c
Purpose : Starts the VNC server via TCP/IP.
         This code works with embOS/IP.
         However, it can be easily modified to work with
         different kernel and IP Stack
---------------------------END-OF-HEADER------------------------------
*/

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "cmsis_os.h"
#include "lwip/sockets.h"
#include "GUI.h"
#include "GUI_VNC.h"

/*********************************************************************
*
*    Static data
*
**********************************************************************
*/
static GUI_VNC_CONTEXT _Context;
static struct sockaddr_in _Addr;
static U64 AppTaskVNCStk; /* task stack */

static void GUIServerThread(void const * argument);
/*********************************************************************
*
*    Static functions
*
**********************************************************************
*/
/*********************************************************************
*
*    _Send
*
* Function description
* This function is called indirectly by the server; it's address is passed to the actual
* server code as function pointer. It is needed because the server is independent
* of the TCP/IP stack implementation, so details for the TCP/IP stack can be placed here.
*/
static int _Send(const U8 * buf, int len, void * pConnectionInfo) {
int r;

r = send((long)pConnectionInfo, (const char *)buf, len, 0);
return r;
}

/*********************************************************************
*
*    _Recv
*
* Function description
* This function is called indirectly by the server; it's address is passed to the actual
* server code as function pointer. It is needed because the server is independent
* of the TCP/IP stack implementation, so details for the TCP/IP stack can be placed here.
*/
static int _Recv(U8 * buf, int len, void * pConnectionInfo) {
return recv((long)pConnectionInfo, (char *)buf, len, 0);
}

/*********************************************************************
*
*    _ListenAtTcpAddr
*
* Starts listening at the given TCP port.
*/
static int _ListenAtTcpAddr(U16 Port) {
int sock;
struct sockaddr_in addr = {0};

sock = socket(AF_INET, SOCK_STREAM, 0);
memset(&addr, 0, sizeof(addr));
addr.sin_family    = AF_INET;
addr.sin_port    = htons(Port);
addr.sin_addr.s_addr = INADDR_ANY;
bind(sock, (struct sockaddr *)&addr, sizeof(addr));
listen(sock, 1);
return sock;
}

/*********************************************************************
*
*    _ServerTask
*
* Function description
* This routine is the actual server task.
* It executes some one-time init code, then runs in an ednless loop.
* It therefor does not terminate.
* In the endless loop it
* - Waits for a conection from a client
* - Runs the server code
* - Closes the connection
*/
static void GUIServerThread(void const * argument)
{
int s, Sock;
uint32_t AddrLen;
U16 Port;
//
// Prepare socket (one time setup)
//
Port = 5900 + _Context.ServerIndex; // Default port for VNC is is 590x, where x is the 0-based layer index
//
// Loop until we get a socket into listening state
//
do {
s = _ListenAtTcpAddr(Port);
if (s != -1) {
   break;
}
osDelay(100); // Try again
} while (1);
//
// Loop once per client and create a thread for the actual server
//
while (1) {
//
// Wait for an incoming connection
//
AddrLen = sizeof(_Addr);
if ((Sock = accept(s, (struct sockaddr*)&_Addr, &AddrLen)) < 0) {
   continue; // Error
}
//
// Run the actual server
//
GUI_VNC_Process(&_Context, _Send, _Recv, (void *)Sock);
//
// Close the connection
//
closesocket(Sock);
memset(&_Addr, 0, sizeof(struct sockaddr_in));
}
}

/*********************************************************************
*
*    Public code
*
**********************************************************************
*/
/*********************************************************************
*
*    GUI_VNC_X_StartServer
*
* Function description
* To start the server, the following steps are executed
* - Make sure the TCP-IP stack is up and running
* - Init the server context and attach it to the layer
* - Start the thread (task) which runs the VNC server
* Notes:
* (1) The first part of the code initializes the TCP/IP stack. In a typical
*    application, this is not required, since the stack should have already been
*    initialized some other place.
*    This could be done in a different module. (TCPIP_AssertInit() ?)
*/
int GUI_VNC_X_StartServer(int LayerIndex, int ServerIndex) {
//
// Init VNC context and attach to layer (so context is updated if the display-layer-contents change
//
GUI_VNC_AttachToLayer(&_Context, LayerIndex);
_Context.ServerIndex = ServerIndex;
//
// Create task for VNC Server
//
//os_tsk_create_user(_ServerTask,
// 4,
// &AppTaskVNCStk,
// sizeof(AppTaskVNCStk));
//

osThreadDef(ServerTask, GUIServerThread, osPriorityNormal, 0, 8 * 1024);
osThreadCreate (osThread(ServerTask), NULL);

// O.k., server has been started
//
return 0;
}

/*********************************************************************
*
*    GUI_VNC_X_getpeername
*
* Function description
* Retrieves the IP addr. of the currently connected VNC client.
*
* Return values
* IP addr. if VNC client connected
* 0 if no client connected
*/
void GUI_VNC_X_getpeername(U32 * Addr) {
*Addr = _Addr.sin_addr.s_addr;
}

/*************************** End of file ****************************/

eric2013 发表于 2020-9-25 13:32:39

用我做的吧

【原创开源】网络版二代双通道示波器开源发布，支持电脑，手机和Pad等各种OS平台访问
http://www.armbbs.cn/forum.php?mod=viewthread&tid=89526&fromuid=58
(出处: 硬汉嵌入式论坛)

wgp2590 发表于 2020-9-25 15:49:10

找到问题了可以用了，但是 VNC软件在 Win10下闪退，不只硬汉遇到过没？

eric2013 发表于 2020-9-26 01:20:10

wgp2590 发表于 2020-9-25 15:49
找到问题了可以用了，但是 VNC软件在 Win10下闪退，不只硬汉遇到过没？

Win10，没问题啊

yelu 发表于 2024-3-26 22:05:40

wgp2590 发表于 2020-9-25 15:49
找到问题了可以用了，但是 VNC软件在 Win10下闪退，不只硬汉遇到过没？

楼主什么问题啊，我最近调试还是不行

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