uartuserm.nc

nesC语言实现的串口收发程序,用于传感器网络操作系统tinyos1.X.研究传感器网络的朋友们可以看看,功能比较简单,却是经常要用到的!

// $Id: TestUartSimpleM.nc,v 1.1.4.2 2003/08/18 22:09:37 cssharp Exp $

/*									tab:4
 * "Copyright (c) 2000-2003 The Regents of the University  of California.  
 * All rights reserved.
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose, without fee, and without written agreement is
 * hereby granted, provided that the above copyright notice, the following
 * two paragraphs and the author appear in all copies of this software.
 * 
 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS."
 *
 * Copyright (c) 2002-2003 Intel Corporation
 * All rights reserved.
 *
 * This file is distributed under the terms in the attached INTEL-LICENSE     
 * file. If you do not find these files, copies can be found by writing to
 * Intel Research Berkeley, 2150 Shattuck Avenue, Suite 1300, Berkeley, CA, 
 * 94704.  Attention:  Intel License Inquiry.
 */
module UartUserM {
  provides {
    interface StdControl;
  }
  uses {
    interface Leds;
    interface Timer;
    interface HPLUART;
  }
}
implementation {
  uint8_t cnt;
  uint8_t D_Led;//leds data
  uint8_t S_Data;
  uint8_t S_Cnt;
  
  command result_t StdControl.init() {
    cnt = 0;//modify by qin
    call HPLUART.init();
    return SUCCESS;
  }

  command result_t StdControl.start() {
    call Timer.start(TIMER_REPEAT, 1000);
    return SUCCESS;
  }

  command result_t StdControl.stop() {
    call Timer.stop();
    return SUCCESS;
  }

  event result_t Timer.fired() {
    call HPLUART.put(cnt);
    /*接收数据注释掉*/
    //显示发送数据低四位到LED4-LED7
    S_Cnt = cnt;
    S_Data = inp(PORTA);
    S_Data &=0x0f;//保留LED0-LED3
    S_Cnt &=0x0f;//获取收到数据的低四位 
    S_Cnt = S_Cnt<<4;
    S_Data |= S_Cnt;
    outp(S_Data, PORTA);
   
    cnt++;
    if( cnt >= 255) 
       cnt = 0;
       
    call Leds.redToggle();
    return SUCCESS;
  }

  async event result_t HPLUART.get(uint8_t data) {
    call Leds.greenToggle();
    /*发送数据注释掉
    
    //显示接收数据低四位到LED4-LED7
    D_Led = inp(PORTA);
    D_Led &=0x0f;//保留LED0-LED3
    data &=0x0f;//获取收到数据的低四位 
    data = data<<4;
    D_Led |= data;
    outp(D_Led, PORTA);
    */
    return SUCCESS;
  }

  async event result_t HPLUART.putDone() {
    call Leds.yellowToggle();
    return SUCCESS;
  }

}