CC3200 做WLAN模式时最大传输速率只有150kb，是我哪里设置有问题吗？

user6458813

Other Parts Discussed in Thread: CC3200

你好，我使用CC3200，修改WLAN_AP例程，在里面添加了TCP/IP Client的功能。然后发送数据，发现在电脑端连接CC3200发出的WLAN后，接收速度只有150kb左右，请问下做WLAN模式最大速度能达到1.5Mbyte/s吗

5 年多前

0 Kevin Qiu 5 年多前

TI__Guru* 82220 points

一般不会这么低，你用的SDK版本是多少

0 user6458813 5 年多前回复 Kevin Qiu

Expert 1500 points

你好我用的SDK版本是1.5.0

0 user6458813 5 年多前回复 user6458813

Expert 1500 points

然后我在没有修改例程的情况下，使用tcp_socket例程。选择里面的send TCP packets发送10M的数据，发现电脑端接收最高也只有150kb。点开网络共享中心查看无线网络连接状态发现速度是58Mbps，请问下这是什么情况

0 Kevin Qiu 5 年多前回复 user6458813

TI__Guru* 82220 points

看下手册16章，速率可以设置，：https://www.ti.com.cn/cn/lit/ug/swru368b/swru368b.pdf?ts=1604287434930&ref_url=https%253A%252F%252Fwww.ti.com.cn%252Fproduct%252Fcn%252FCC3200

user6458813 说：
点开网络共享中心查看无线网络连接状态发现速度是58Mbps

这应该包括了PC和路由器的带宽

0 user6458813 5 年多前回复 Kevin Qiu

Expert 1500 points

你好，请问下。16章讲的是引脚配置，个人觉得是制作PCB板布线才需要关注的一章把。可是我使用的是您公司的开发板，整章看下来没有看到关于速率方面的问题啊。

0 Kevin Qiu 5 年多前回复 user6458813

TI__Guru* 82220 points

16章和引脚配置没有关系

将你的终端测试数据传上来看看

0 user6458813 5 年多前回复 Kevin Qiu

Expert 1500 points

好的，这是我的WLAN设置：
static int ConfigureMode(int iMode)
{
long lRetVal = -1;

UART_PRINT("Enter the AP SSID name: ");

lRetVal = sl_WlanSetMode(ROLE_AP);
ASSERT_ON_ERROR(lRetVal);

sl_Stop(0);
sl_Start(NULL,NULL,NULL);
//设置WLAN名字
lRetVal = sl_WlanSet(SL_WLAN_CFG_AP_ID, WLAN_AP_OPT_SSID, strlen(pcSsidName),
(unsigned char*)pcSsidName);
ASSERT_ON_ERROR(lRetVal);
//设置WLAN密码
_u8 val = SL_SEC_TYPE_WPA_WPA2;
lRetVal = sl_WlanSet(SL_WLAN_CFG_AP_ID, WLAN_AP_OPT_SECURITY_TYPE, 1, (_u8 *)&val);
ASSERT_ON_ERROR(lRetVal);

lRetVal = sl_WlanSet(SL_WLAN_CFG_AP_ID, WLAN_AP_OPT_PASSWORD, strlen(wifikey), (_u8 *)wifikey);
ASSERT_ON_ERROR(lRetVal);
//设置通道，这里设置为1
val = 1;
sl_WlanSet(SL_WLAN_CFG_AP_ID, WLAN_AP_OPT_CHANNEL, 1, (_u8 *)&val);

unsigned char power = 15;
_u8 appower=(_u8)power;
sl_WlanSet(SL_WLAN_CFG_GENERAL_PARAM_ID, WLAN_GENERAL_PARAM_OPT_AP_TX_POWER,1,(_u8 *)&appower);

// Set PM policy to normal 将电源策略设置为低延迟
lRetVal = sl_WlanPolicySet(SL_POLICY_PM , SL_LOW_LATENCY_POLICY, NULL, 0);
ASSERT_ON_ERROR(lRetVal);

UART_PRINT("Device is configured in AP mode\n\r");

/* Restart Network processor */
lRetVal = sl_Stop(SL_STOP_TIMEOUT);

// reset status bits
CLR_STATUS_BIT_ALL(g_ulStatus);

return sl_Start(NULL,NULL,NULL);
}

在发送部分：
int InitBsdTcpClient(unsigned long ulIpAddr)
{
// 填充TCP服务的socker地址
sAddr.sin_family = SL_AF_INET;
sAddr.sin_port = sl_Htons((unsigned short)1234);
sAddr.sin_addr.s_addr = sl_Htonl((unsigned int)ulIpAddr);
// creating a TCP socket
iSockID = sl_Socket(SL_AF_INET,SL_SOCK_STREAM, 0);
if( iSockID < 0 )
{
ASSERT_ON_ERROR(SOCKET_CREATE_ERROR);
}
// connecting to TCP server
iStatus = sl_Connect(iSockID, ( SlSockAddr_t *)&sAddr, iAddrSize);
if( iStatus < 0 )
{
// error
sl_Close(iSockID);
ASSERT_ON_ERROR(CONNECT_ERROR);
}
}

主函数的传输部分：
unsigned char g_ucRxBuff_B[1024];//这里我全部初始化为0
while(1)
{
lRetVal = sl_Send(iSockID, g_ucRxBuff_B, 1024, SL_RAW_RF_TX_PARAMS(1, RATE_54M,1, 0) );
}
然后测试端使用TCP助手接收，网速是查看360网络测速看的实时速率

0 Kevin Qiu 5 年多前回复 user6458813

TI__Guru* 82220 points

CC3200TCP和UDP速率：e2e.ti.com/.../3238578

0 user6458813 5 年多前回复 Kevin Qiu

Expert 1500 points

您好，要不请问下有没有CC3200测试wlan速率的Demo，还有sl_Send可以同时发送多个吗？

0 Kevin Qiu 5 年多前回复 user6458813

TI__Guru* 82220 points

没有直接测试的例程，你可以用手机安装Iperf测试下可以看到速率，sl_Send一次只能发送一个
/*!
    \brief write data to TCP socket
    
    This function is used to transmit a message to another socket.
    Returns immediately after sending data to device.
    In case of TCP failure an async event SL_SOCKET_TX_FAILED_EVENT is going to
    be received.
    In case of a RAW socket (transceiver mode), extra 4 bytes should be reserved at the end of the 
    frame data buffer for WLAN FCS 
     
    \param[in] sd               socket handle
    \param[in] buf              Points to a buffer containing 
                                the message to be sent
    \param[in] Len              message size in bytes. Range: 1-1460 bytes
    \param[in] flags            Specifies the type of message 
                                transmission. On this version, this parameter is not
                                supported for TCP.
                                For transceiver mode, the SL_RAW_RF_TX_PARAMS macro can be used to determine
                                transmission parameters (channel,rate,tx_power,preamble)
    
    
    \return                     Return the number of bytes transmitted, 
                                or -1 if an error occurred
    
    \sa     sl_SendTo 
    \note                       belongs to \ref send_api
    \warning   
    \par        Example:
    \code       An example of sending data:
    
                SlSockAddrIn_t  Addr;
                _i16 AddrSize = sizeof(SlSockAddrIn_t);
                _i16 SockID;
                _i16 Status;
                _i8 Buf[SEND_BUF_LEN];

                Addr.sin_family = SL_AF_INET;
                Addr.sin_port = sl_Htons(5001);
                Addr.sin_addr.s_addr = sl_Htonl(SL_IPV4_VAL(10,1,1,200));

                SockID = sl_Socket(SL_AF_INET,SL_SOCK_STREAM, 0);
                Status = sl_Connect(SockID, (SlSockAddr_t *)&Addr, AddrSize);
                Status = sl_Send(SockID, Buf, 1460, 0 );
 
    \endcode
 */ 
#if _SL_INCLUDE_FUNC(sl_Send )
_i16 sl_Send(_i16 sd, const void *buf, _i16 Len, _i16 flags);
#endif

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CC3200 做WLAN模式时最大传输速率只有150kb，是我哪里设置有问题吗？