參考連結:
http://bbs.eeworld.com.cn/thread-526055-1-1.html
前言(垃圾話)
LXI 設備: 符合 LXI 規範的儀器設備，我的理解是用網口通信的儀器設備就是 LXI 設備
VXI-11：控制器和設備通過 TCP/IP 網絡通信的網絡儀器協儀
RPC：遠程調用，基於 C/S 模型，一台計算機上的程序調用另一台計算機上的程序
XDR：外部數據表示，就是在不同的計算機系統中轉換數據的格式，避免出現類似大小端的問題
TI: 德州儀器 (Texas Instruments) 德州儀器是一家位於美國德克薩斯州達拉斯的跨國公司，以開發、製造、銷售半導體和計算機技術聞名於世，主要從事數位訊號處理與類比電路方面的研究、製造和銷售。它在 25 個國家有製造、設計或者銷售機構。
國家儀器股份有限公司（英語：National Instruments，縮寫 NI，NASDAQ：NATI）是一家美國公司，從事與測試、控制、設計領域相關的，包括虛擬儀器和電子測試設備等工程軟體的開發。著名產品有圖形開發環境 LabVIEW、C 語言虛擬儀器應用系統 LabWindows/CVI、集成電路分析程序 NI Multisim 等等；硬體產品包括 VXI 匯流排、PXI 匯流排、VME 匯流排的框架與模塊，IEEE-488 接口以及內部整合電路和其他自動化技術的標準
Issue:
Implementing VXI-11 protocol in existing serial to ethernet for LXI compatibility
TI 的客戶曾經請求官方提供 vxi11 功能，但官方回應不支援，並鎖定討論串，有夠 777777，最後一篇原 PO 者還貼了一堆資訊然後就討論串被鎖了，當然我也是笑不出來啦，因為換我要開發這鬼咚咚。
回到正題，簡單來說 VXI-11 實現需要執行兩個服務，一個是 portmap service (port:111)，vxi11 service(port: range~range，range 根據 rpc code 是根據程式 pid 隨機產生出來的，所以就隨便定)。去 ni-visa 官網下載 ni-MAX，
相關文件
文件部分請參考我的 github
vxi11.x
typedef long Device_Link;
enum Device_AddrFamily
{
DEVICE_TCP,
DEVICE_UDP
};
typedef long Device_Flags;
typedef long Device_ErrorCode;
struct Device_Error
{
Device_ErrorCode error;
};
struct Create_LinkParms
{
long clientId; /* implementation specific value */
bool lockDevice; /* attempt to lock the device */
unsigned long lock_timeout; /* time to wait for lock */
string device<>; /* name of device */
};
struct Create_LinkResp
{
Device_ErrorCode error;
Device_Link lid;
unsigned short abortPort; /* for the abort RPC */
unsigned long maxRecvSize; /* max # of bytes accepted on write */
};
struct Device_WriteParms
{
Device_Link lid; /* link id from create_link */
unsigned long io_timeout; /* time to wait for I/O */
unsigned long lock_timeout; /* time to wait for lock */
Device_Flags flags; /* flags with options */
opaque data<>; /* the data length and the data itself */
};
struct Device_WriteResp
{
Device_ErrorCode error;
unsigned long size; /* # of bytes written */
};
struct Device_ReadParms
{
Device_Link lid; /* link id from create_link */
unsigned long requestSize; /* # of bytes requested */
unsigned long io_timeout; /* time to wait for I/O */
unsigned long lock_timeout; /* time to wait for lock */
Device_Flags flags; /* flags with options */
char termChar; /* valid if flags & termchrset */
};
struct Device_ReadResp
{
Device_ErrorCode error;
long reason; /* why read completed */
opaque data<>; /* the data length and the data itself */
};
struct Device_ReadStbResp
{
Device_ErrorCode error;
unsigned char stb; /* the returned status byte */
};
struct Device_GenericParms
{
Device_Link lid; /* link id from create_link */
Device_Flags flags; /* flags with options */
unsigned long lock_timeout; /* time to wait for lock */
unsigned long io_timeout; /* time to wait for I/O */
};
struct Device_RemoteFunc
{
unsigned long hostAddr; /* host servicing interrupt */
unsigned long hostPort; /* valid port # on client */
unsigned long progNum; /* DEVICE_INTR */
unsigned long progVers; /* DEVICE_INTR_VERSION */
Device_AddrFamily progFamily; /* DEVICE_UDP | DEVICE_TCP */
};
struct Device_EnableSrqParms
{
Device_Link lid; /* link id from create_link */
bool enable; /* enable or disable intr's */
opaque handle<40>; /* host specific data */
};
struct Device_LockParms
{
Device_Link lid; /* link id from create_link */
Device_Flags flags; /* contains the waitlock flag */
unsigned long lock_timeout; /* time to wait for lock */
};
struct Device_DocmdParms
{
Device_Link lid; /* link id from create_link */
Device_Flags flags; /* flags with options */
unsigned long io_timeout; /* time to wait for I/O */
unsigned long lock_timeout; /* time to wait for lock */
long cmd; /* which command to execute */
bool network_order; /* client's byte order */
long datasize; /* size of individual data elements */
opaque data_in<>; /* docmd data parameters */
};
struct Device_DocmdResp
{
Device_ErrorCode error;
opaque data_out<>; /* returned data parameters */
};
program DEVICE_ASYNC
{
version DEVICE_ASYNC_VERSION
{
Device_Error device_abort (Device_Link) = 1;
} = 1;
} = 0x0607B0;
program DEVICE_CORE
{
version DEVICE_CORE_VERSION
{
Create_LinkResp create_link (Create_LinkParms) = 10;
Device_WriteResp device_write (Device_WriteParms) = 11;
Device_ReadResp device_read (Device_ReadParms) = 12;
Device_ReadStbResp device_readstb (Device_GenericParms) = 13;
Device_Error device_trigger (Device_GenericParms) = 14;
Device_Error device_clear (Device_GenericParms) = 15;
Device_Error device_remote (Device_GenericParms) = 16;
Device_Error device_local (Device_GenericParms) = 17;
Device_Error device_lock (Device_LockParms) = 18;
Device_Error device_unlock (Device_Link) = 19;
Device_Error device_enable_srq (Device_EnableSrqParms) = 20;
Device_DocmdResp device_docmd (Device_DocmdParms) = 22;
Device_Error destroy_link (Device_Link) = 23;
Device_Error create_intr_chan (Device_RemoteFunc) = 25;
Device_Error destroy_intr_chan (void) = 26;
} = 1;
} = 0x0607AF;
/******************************************************************************
*
* vxi11intr.rpcl
*
* This file is best viewed with a tabwidth of 4
*
******************************************************************************
*
* TODO:
*
******************************************************************************
*
* Original Author: someone from VXIbus Consortium
* Current Author: Benjamin Franksen
* Date: 03-06-97
*
* RPCL description of the intr-channel of the TCP/IP Instrument Protocol
* Specification.
*
*
* Modification Log:
* -----------------
* .00 03-06-97 bfr created this file
*
******************************************************************************
*
* Notes:
*
* This stuff is literally from
*
* "VXI-11, Ref 1.0 : TCP/IP Instrument Protocol Specification"
*
*/
struct Device_SrqParms
{
opaque handle<>;
};
program DEVICE_INTR
{
version DEVICE_INTR_VERSION
{
void device_intr_srq (Device_SrqParms) = 30;
} = 1;
} = 0x0607B1;clone 示範代碼
$git clone http://172.16.5.187:10080/tsaiyuyan/oncrpc_project.git
$tree
├─oncrpc_ti-rtos_gw (被tsaiyuyan 移植到 TI-RTOS)
│ ├─include <==> rpc header files (被tsaiyuyan 修改過)
│ │ └─rpc
│ ├─portmap <==> rpc source code (被tsaiyuyan 修改過)
│ ├─src <==> rpc source code (被tsaiyuyan 修改過)
│ └─vxi11 <==> vxi11 source code (被tsaiyuyan 修改過)
└─oncrpc_win_gw (原始碼)
├─include <==> rpc header files
│ └─rpc
├─portmap <==> rpc source code
├─src <==> rpc source code
├─vxi11 <==> vxi11 source code
└─vxi11_x <==> 有個 vxi11.x 為官網提供的模板搭配 rpcgen.exe 使用，
vxi11 這個folder 的檔案就是靠 rpcgen 產生的。
如何使用 rpcgen for vxi11.x
請參閱影片: https://youtu.be/haqsQjkJ90M
vxi11 在 windows 示範
請參閱影片: https://youtu.be/HD1JY9mEhRI
移植 vxi11 到 TI-RTOS 上
請參考下篇文章 vxi11 儀器服務的實現_part2
用 winmerge 比較 oncrpc_ti-rtos_gw 跟 oncrpc_win_gw 這兩個資料夾
