详情

本章节重点讲述WiMi-net无线自组网管理平台SDK调用中的第5个问题：如何快速操作 WiMi-net433MHz无线通信设备的数据发送业务？

1.查询发送状态

2. 以TCP发送数据报文

3. 以UDP发送数据报文

4. 以TCP/UDP发送数据报文

5.设置UDP发送等级

6.读取UDP发送等级

7. 测试例子程序

#Include

#Include

#Include"API-WiMinet.h"

int main( int argc, char*argv[] )

{

char iRetVal;

char * pBuffer;

FILE * pFile;

char pFileName[1024];

unsigned char iStatus;

unsigned char iProgress;

unsigned long dwSize;

unsigned long dwTimerA;

unsigned long dwTimerB;

unsigned long dwTimerX;

// COM port interface

iRetVal = OpenWiMinetShell("COM3",115200, 0X01 );

// Ethernet interface

//iRetVal = OpenWiMinetShell("192.168.0.240",12580, 0X01 );

// Validate the shell open interface

if ( !iRetVal )

{

printf( "Open shellfailed!
" );

return 0X00;

}

// Query the TxStatus

while ( 0X01 )

{

// Query the Tx status

QueryTxMsgStatus( 0X00, ( char *)&iStatus );

// Check if end of the Tx procedure

if ( iStatus ==TXD_TASK_STATUS_JOB_WAITING )

{

break;

}

// Waiting the task is free

printf( "." );

// Release the control of the processor

Sleep( 0X01 );

}

// The input file name

printf( "
Please input filename:" );

// Clear the string

memset( pFileName, 0X00, sizeof( pFileName ));

// The input file name

scanf("%s", pFileName );

// Open the file

pFile = fopen( pFileName, "rb" );

// Validate the file pointer

if ( !pFile )

{

printf( "Failed To OpenFile!
" );

}

// Seek to the file end

fseek( pFile, 0X00, SEEK_END );

// Thefile size

dwSize = ftell( pFile );

// Seek to the file head

fseek( pFile, 0X00, SEEK_SET );

// allocate the buffer

pBuffer = ( char * )malloc( dwSize );

// Read this file contents

fread( pBuffer, 0X01, dwSize, pFile );

// Close this file

fclose( pFile );

// Send out this packet

SendHiQoSMessage( 0X00, ( short )0XA117,pBuffer, dwSize );

// delete this buffer

free( pBuffer );

// The initial time counter

dwTimerA = GetTickCount();

// The default Tx progress

iProgress = 0XFF;

// Query the TxStatus

while ( 0X01 )

{

// Release the control of the processor

Sleep( 0X01 );

// Query the Tx status

QueryTxMsgStatus( 0X00, ( char *)&iStatus );

// Check if end of the Tx procedure

if ( iStatus &TXD_TASK_STATUS_REPORTTABLE )

{

break;

}

// Compare the progress value

if ( iStatus == iProgress )

{

continue;

}

// Current time counter

dwTimerB = GetTickCount();

// The offset timer

dwTimerX = dwTimerB - dwTimerA;

// Update the progress value

iProgress = iStatus;

// Current Tx progress

printf( "%9lu ms -->%d%%
", dwTimerX, iStatus );

}

// Query the Tx timer

GetTxMessageTime( 0X00, &dwTimerX );

// The task completed status

switch ( iStatus )

{

case TXD_TASK_STATUS_END_SUCCESS:

{

printf( "
Tx CompletedSuccessfully,Time=%lu(ms)

", dwTimerX );

}

break;

case TXD_TASK_STATUS_END_FAILURE:

{

printf( "
Tx Completed WithError,Time=%lu(ms)

", dwTimerX );

}

break;

case TXD_TASK_STATUS_END_NOCRC32:

{

printf( "
Tx Completed WithoutCRC32,Time=%lu(ms)

", dwTimerX );

}

break;

default:

{

printf( "
Tx Completed WithUnknown Error,Time=%lu(ms)

", dwTimerX );

}

break;

}

// Stop the shell

StopWiMinetShell( 0X00 );

// Exit this main program

return 0X01;

}

8. 测试程序说明

程序基本的逻辑如下：

1. 查询发送队列，是否处于空闲状态，如果没有需要等待当前发送任务完成

2. 提示输入需要传输的文件名称

3. 读取文件的总长度

4. 分配相应长度的内存块

5. 将文件内容加载到内存块

6. 关闭文件

7. 将内存块中的内容提交给发送队列

8. 释放之前分配的内存块

9. 查询发送状态，打印发送时间和进度信息

10. 查询发送任务是否已经结束

11. 打印发送的结果信息