tftpc.h

凌阳SPCE3200 系统开发板随机自带源程序。共安排了32个子目录

 *                  had returned with TFTP_OK.
 *
 * Input:           None
 *
 * Output:          None
 *
 * Side Effects:    None
 *
 * Overview:        If file is opened in read mode, it makes sure
 *                  that last ACK is sent to server
 *                  If file is opened in write mode, it makes sure
 *                  that last block is sent out to server and
 *                  waits for server to respond with ACK.
 *
 * Note:            TFTPIsFileClosed() must be called to confirm
 *                  if file was really closed.
 ********************************************************************/
void TFTPCloseFile(void);


/*********************************************************************
 * Function:        TFTP_RESULT TFPTIsFileClosed(void)
 *
 * PreCondition:    TFTPCloseFile() is already called.
 *
 * Input:           None
 *
 * Output:          TFTP_OK if file was successfully closdd
 *
 *                  TFTP_RETRY if file mode was Write and remote
 *                  server did not receive last packet.
 *                  Application must retry with last block.
 *
 *                  TFTP_TIMEOUT if all attempts were exhausted
 *                  in closing file.
 *
 *                  TFTP_ERROR if remote server sent an error
 *                  in response to last block.
 *                  Actual error code may be read by calling
 *                  TFTPGetError()
 *
 *                  TFTP_NOT_READY if file is not closed yet.
 *
 * Side Effects:    None
 *
 * Overview:        If file mode is Read, it simply makes that
 *                  last block is acknowledged.
 *                  If file mode is Write, it waits for server ack.
 *                  If no ack was received within specified timeout
 *                  instructs appliaction to resend last block.
 *                  It keeps track of retries and declares timeout
 *                  all attempts were exhausted.
 *
 * Note:            None
 ********************************************************************/
TFTP_RESULT TFTPIsFileClosed(void);



/*********************************************************************
 * Function:        TFTP_RESULT TFTPIsGetReady(void)
 *
 * PreCondition:    TFTPOpenFile() is called with TFTP_FILE_MODE_READ
 *                  and TFTPIsFileOpened() returned with TRUE.
 *
 * Input:           None
 *
 * Output:          TFTP_OK if it there is more data byte available
 *                  to read
 *
 *                  TFTP_TIMEOUT if timeout occurred waiting for
 *                  new data.
 *
 *                  TFTP_END_OF_FILE if end of file has reached.
 *
 *                  TFTP_ERROR if remote server returned ERROR.
 *                      Actual error code may be read by calling
 *                      TFTPGetError()
 *
 *                  TFTP_NOT_READY if still waiting for new data.
 *
 * Side Effects:    None
 *
 * Overview:        Waits for data block.  If data block does not
 *                  arrive within specified timeout, it automatically
 *                  sends out ack for previous block to remind
 *                  server to send next data block.
 *                  If all attempts are exhausted, it returns with
 *                  TFTP_TIMEOUT.
 *
 * Note:            By default, this funciton uses "octet" or binary
 *                  mode of file transfer.
 ********************************************************************/
TFTP_RESULT TFTPIsGetReady(void);


/*********************************************************************
 * Function:        BYTE TFTPGet(void)
 *
 * PreCondition:    TFTPOpenFile() is called with TFTP_FILE_MODE_READ
 *                  and TFTPIsGetReady() = TRUE
 *
 * Input:           None
 *
 * Output:          data byte as received from remote server.
 *
 * Side Effects:    None
 *
 * Overview:        Fetches next data byte from TFTP socket.
 *                  If end of data block is reached, it issues
 *                  ack to server so that next data block can be
 *                  received.
 *
 * Note:            Use this function to read file from server.
 ********************************************************************/
BYTE TFTPGet(void);


/*********************************************************************
 * Function:        TFTP_RESULT TFTPIsPutReady(void)
 *
 * PreCondition:    TFTPOpenFile() is called with TFTP_FILE_MODE_WRITE
 *                  and TFTPIsFileOpened() returned with TRUE.
 *
 * Input:           None
 *
 * Output:          TFTP_OK if it is okay to write more data byte.
 *
 *                  TFTP_TIMEOUT if timeout occurred waiting for
 *                  ack from server
 *
 *                  TFTP_RETRY if all server did not send ack
 *                  on time and application needs to resend
 *                  last block.
 *
 *                  TFTP_ERROR if remote server returned ERROR.
 *                  Actual error code may be read by calling
 *                  TFTPGetError()
 *
 *                  TFTP_NOT_READY if still waiting...
 *
 * Side Effects:    None
 *
 * Overview:        Waits for ack from server.  If ack does not
 *                  arrive within specified timeout, it it instructs
 *                  application to retry last block by returning
 *                  TFTP_RETRY.
 *
 *                  If all attempts are exhausted, it returns with
 *                  TFTP_TIMEOUT.
 *
 * Note:            None
 ********************************************************************/
TFTP_RESULT TFTPIsPutReady(void);


/*********************************************************************
 * Function:        void TFTPPut(BYTE c)
 *
 * PreCondition:    TFTPOpenFile() is called with TFTP_FILE_MODE_WRITE
 *                  and TFTPIsPutReady() = TRUE
 *
 * Input:           c       - Data byte that is to be written
 *
 * Output:          None
 *
 * Side Effects:    None
 *
 * Overview:        Puts given data byte into TFTP socket.
 *                  If end of data block is reached, it
 *                  transmits entire block.
 *
 * Note:            Use this function to write file to server.
 ********************************************************************/
void TFTPPut(BYTE c);

/*********************************************************************
 * Macro:           WORD TFTPGetError(void)
 *
 * PreCondition:    One of the TFTP function returned with
 *                  TFTP_ERROR result.
 *
 * Input:           None
 *
 * Output:          Error code as returned by remote server.
 *                  Application may use TFTP_ACCESS_ERROR enum. to
 *                  decode standard error code.
 *
 * Side Effects:    None
 *
 * Overview:        Returns previously saved error code.
 *
 * Note:            None
 ********************************************************************/
#define TFTPGetError()      (_tftpError)
    extern WORD _tftpError;
/*********************************************************************
 * Function:        TFTP_RESULT TFTP_Connect(IP_ADDR *ServerIP)
 *
 * PreCondition:    
 *                  
 *
 * Input:           ServerIP       - Remote server IP address
 *
 * Output:          TFTP_OK if connecting remote server success.
 *		    		TFTP_ERROR if connecting timeout is three times.
 *
 * Side Effects:    None
 *
 * Overview:        TFTP client use ServerIP to setup a connection with
 *                  remote server.
 *
 * Note:            None
 ********************************************************************/
TFTP_RESULT TFTP_Connect(IP_ADDR *ServerIP);


/*********************************************************************************************
 * Function:        TFTP_RESULT TFTP_Operate(char* fileName, 
 *						TFTP_FILE_MODE operateMode, BYTE* buff)
 *
 * PreCondition:    TFTP_Connect() is called, and return TFTP_OK
 *                  
 *
 * Input:           fileName       - the file's name on the remote server root directory
 *		    		operateMode    - send a read/write file request
 *		    		buff           - ram address to receive/send the file's data
 *		    		length         - under reading mode ,length means the receive buff size.
 *				   				   - under writing mode ,length means the send byte numbers
 *
 * Output:          TFTP_OK 	   if operation success.
 *		    		TFTP_ERROR     if operation error.
 *
 * Side Effects:    None
 *
 * Overview:        TFTP client use ServerIP to setup a connection with
 *                  remote server.
 *
 * Note:            None
 ********************************************************************************************/
TFTP_RESULT TFTP_Operate(char* fileName, TFTP_FILE_MODE operateMode, BYTE* buff,unsigned int length);


#endif