Zigbee网关 Zstack增加串口功能1-修改底层驱动MT/MT_UART.c

ZigbeeGateWay工程协调器用了串口， 对于协调器，uart接到了P1口（USART1），P0口用作跟以太网芯片通讯。

P1_6 --> TXD

P1_7 --> RXD

这正好与zstack定义宏ZTOOL_P1初始化的串口的引脚相同



而定义宏ZTOOL_P1的时候，系统的串口默认是跟PC机的Z-Tool 2.0.exe通信的，Z-Tool 2.0.exe默认目录C:\Texas Instruments\ZStack-CC2530-2.4.0-1.4.0\Tools\Z-Tool



所以，需要先取消与pc机的Ztool的协议，取消的方法在串口初始化函数里面

/***************************************************************************************************
*                                          LOCAL FUNCTIONS
***************************************************************************************************/

/***************************************************************************************************
* @fn      MT_UartInit
*
* @brief   Initialize MT with UART support
*
* @param   None
*
* @return  None
***************************************************************************************************/
void MT_UartInit ()
{
halUARTCfg_t uartConfig;

/* Initialize APP ID */
App_TaskID = 0;

/* UART Configuration */
uartConfig.configured           = TRUE;
uartConfig.baudRate             = MT_UART_DEFAULT_BAUDRATE;
uartConfig.flowControl          = FALSE;//MT_UART_DEFAULT_OVERFLOW;
uartConfig.flowControlThreshold = MT_UART_DEFAULT_THRESHOLD;
uartConfig.rx.maxBufSize        = MT_UART_DEFAULT_MAX_RX_BUFF;
uartConfig.tx.maxBufSize        = MT_UART_DEFAULT_MAX_TX_BUFF;
uartConfig.idleTimeout          = MT_UART_DEFAULT_IDLE_TIMEOUT;
uartConfig.intEnable            = TRUE;
#if defined (ZTOOL_P1) || defined (ZTOOL_P2)
//uartConfig.callBackFunc         = MT_UartProcessZToolData;
uartConfig.callBackFunc         = MT_UartProcessZAppData;
#elif defined (ZAPP_P1) || defined (ZAPP_P2)
uartConfig.callBackFunc         = MT_UartProcessZAppData;
#else
uartConfig.callBackFunc         = NULL;
#endif

/* Start UART */
#if defined (MT_UART_DEFAULT_PORT)
HalUARTOpen (MT_UART_DEFAULT_PORT, &uartConfig);
#else
/* Silence IAR compiler warning */
(void)uartConfig;
#endif

/* Initialize for ZApp */
//#if defined (ZAPP_P1) || defined (ZAPP_P2)
/* Default max bytes that ZAPP can take */
MT_UartMaxZAppBufLen  = 20;
MT_UartZAppRxStatus   = MT_UART_ZAPP_RX_READY;
//#endif

}

在初始化函数中，如果定义了(ZTOOL_P1)或者(ZTOOL_P2)默认回调函数是MT_UartProcessZToolData，把回调函数改成MT_UartProcessZAppData即可

将MT_UartMaxZAppBufLen改成20或者大一点的，这时设置接收buffer大小的；MT_UART_DEFAULT_IDLE_TIMEOUT是设置2个字符来的间隔如果在

MT_UART_DEFAULT_IDLE_TIMEOUT内，认为是一串的。

但是改成MT_UartProcessZAppData后编译提示找不到MT_UartMaxZAppBufLen 和MT_UartZAppRxStatus 所以将顶上的全局变量

/***************************************************************************************************
*                                         GLOBAL VARIABLES
***************************************************************************************************/
/* Used to indentify the application ID for osal task */
byte App_TaskID;

/* ZTool protocal parameters */
uint8 state;
uint8  CMD_Token[2];
uint8  LEN_Token;
uint8  FSC_Token;
mtOSALSerialData_t  *pMsg;
uint8  tempDataLen;

//#if defined (ZAPP_P1) || defined (ZAPP_P2)
uint16  MT_UartMaxZAppBufLen;
bool    MT_UartZAppRxStatus;
//#endif

中的宏定义

//#if defined (ZAPP_P1) || defined (ZAPP_P2)

注释掉，还有同时注释掉串口初始化函数中的宏#if

//#if defined (ZAPP_P1) || defined (ZAPP_P2)
/* Default max bytes that ZAPP can take */
MT_UartMaxZAppBufLen  = 20;
MT_UartZAppRxStatus   = MT_UART_ZAPP_RX_READY;
//#endif

最后注释宏#if使能跟App相关的一些方法

//#if defined (ZAPP_P1) || defined (ZAPP_P2)
/***************************************************************************************************
* @fn      MT_UartProcessZAppData
*
* @brief   | SOP | CMD  |   Data Length   | FSC  |
*          |  1  |  2   |       1         |  1   |
*
*          Parses the data and determine either is SPI or just simply serial data
*          then send the data to correct place (MT or APP)
*
* @param   port    - UART port
*          event   - Event that causes the callback
*
*
* @return  None
***************************************************************************************************/
void MT_UartProcessZAppData ( uint8 port, uint8 event )
{

osal_event_hdr_t  *msg_ptr;
uint16 length = 0;
uint16 rxBufLen  = Hal_UART_RxBufLen(MT_UART_DEFAULT_PORT);

/*
If maxZAppBufferLength is 0 or larger than current length
the entire length of the current buffer is returned.
*/
if ((MT_UartMaxZAppBufLen != 0) && (MT_UartMaxZAppBufLen <= rxBufLen))
{
length = MT_UartMaxZAppBufLen;
}
else
{
length = rxBufLen;
}

/* Verify events */
if (event == HAL_UART_TX_FULL)
{
// Do something when TX if full
return;
}

if (event & ( HAL_UART_RX_FULL | HAL_UART_RX_ABOUT_FULL | HAL_UART_RX_TIMEOUT))
{
if ( App_TaskID )
{
/*
If Application is ready to receive and there is something
in the Rx buffer then send it up
*/
if ((MT_UartZAppRxStatus == MT_UART_ZAPP_RX_READY ) && (length != 0))
{
/* Disable App flow control until it processes the current data */
//    MT_UartAppFlowControl (MT_UART_ZAPP_RX_NOT_READY);

/* 2 more bytes are added, 1 for CMD type, other for length */
msg_ptr = (osal_event_hdr_t *)osal_msg_allocate( length + sizeof(osal_event_hdr_t) );
if ( msg_ptr )
{
msg_ptr->event = SPI_INCOMING_ZAPP_DATA;
msg_ptr->status = length;

/* Read the data of Rx buffer */
HalUARTRead( MT_UART_DEFAULT_PORT, (uint8 *)(msg_ptr + 1), length );

/* Send the raw data to application...or where ever */
osal_msg_send( App_TaskID, (uint8 *)msg_ptr );
}
}
}
}
}

/***************************************************************************************************
* @fn      SPIMgr_ZAppBufferLengthRegister
*
* @brief
*
* @param   maxLen - Max Length that the application wants at a time
*
* @return  None
*
***************************************************************************************************/
void MT_UartZAppBufferLengthRegister ( uint16 maxLen )
{
/* If the maxLen is larger than the RX buff, something is not right */
if (maxLen <= MT_UART_DEFAULT_MAX_RX_BUFF)
MT_UartMaxZAppBufLen = maxLen;
else
MT_UartMaxZAppBufLen = 1; /* default is 1 byte */
}

/***************************************************************************************************
* @fn      SPIMgr_AppFlowControl
*
* @brief
*
* @param   status - ready to send or not
*
* @return  None
*
***************************************************************************************************/
void MT_UartAppFlowControl ( bool status )
{

/* Make sure only update if needed */
if (status != MT_UartZAppRxStatus )
{
MT_UartZAppRxStatus = status;
}

/* App is ready to read again, ProcessZAppData have to be triggered too */
if (status == MT_UART_ZAPP_RX_READY)
{
MT_UartProcessZAppData (MT_UART_DEFAULT_PORT, HAL_UART_RX_TIMEOUT );
}

}

//#endif //ZAPP

将

MT_UartAppFlowControl (MT_UART_ZAPP_RX_NOT_READY);

也注释掉，否则每次接受完的时候都得重新调用

MT_UartAppFlowControl ( MT_UART_ZAPP_RX_READY )；

至此，底层的驱动修改完成

下一步应该修改app层应用，详见
http://blog.csdn.net/u010615629/article/details/49778155