nrf905.txt

NRF905 具备跳号跳频和跳址的nrf905的C51演示程序

unsigned char VerifynRFConfig(void) using 0//校验配置nRF905
{
unsigned char error = 0;
  TRX_CE = 0;//设置nRF905为待机方式
  _nop_();
  CSN = 0;                        // Spi enable for write a spi command
  SpiReadWrite(RC);                // Read config command
  SpiReadWrite(0xff);                       //中心频率低8位
  if (SpiReadWrite(0xff) != (PA_PWR_10dBm | HFREQ_PLL_433MHz)) error ++; //发射+10dBm,发射频率433MHz,中心频率第9位=0
  if (SpiReadWrite(0xff) != (TX_AFW_4BYTE | RX_AFW_4BYTE)) error ++;     //接收地址宽度4字节,发送地址宽度4字节
  if (SpiReadWrite(0xff) != (RX_PW_32BYTE)) error ++;                    //接收数据宽度32字节
  if (SpiReadWrite(0xff) != (TX_PW_32BYTE)) error ++;                    //发送数据宽度32字节
  SpiReadWrite(0xff);                       //接收有效地址第1字节
  SpiReadWrite(0xff);                       //接收有效地址第2字节
  SpiReadWrite(0xff);                       //接收有效地址第3字节
  SpiReadWrite(0xff);                       //接收有效地址第4字节
  if (SpiReadWrite(0xff) != (CRC16_EN | XOF_16MHz)) error ++;            //CRC16模式使能,晶体振荡器频率16MHz
  CSN = 1;                        // Disable Spi
  TRX_CE = !TX_EN;//
  return error;
}

/*******************************************************************************************/
//function SetTxMode();
/*******************************************************************************************/
void SetTxMode(void) using 0                
{    
  _nop_();
  _nop_();
  _nop_();
  TX_EN=1;
  _nop_();
  TRX_CE=0;
  _nop_();
  _nop_();
  _nop_();
}                
/*******************************************************************************************/
//function SetRxMode();
/*******************************************************************************************/
void SetRxMode(void) using 0
{
  _nop_();
  _nop_();
  _nop_();
  TX_EN=0;
  _nop_();
  TRX_CE=1;
//650uS
  _nop_();
  _nop_();
  _nop_();
}

void SystemIoInit(void) using 0
{
  IE = 0x00;//关闭中断
  P2 = 0x9d;//P2口初始化
  P0 = 0xff;//P0口初始化
  P1 = 0xff;//P1口初始化
  P3 = 0xff;//P3口初始化
//  nRFPowerUP();
}

void UserSetup(void) using 0//用户运行环境设置
{
  KeyInit();//键盘初始化
  nRFInit();//无线模块初始化
  SystemBuffers.TimeCount = 0;
}

void ClrWdt(void)  using 0//喂狗
{
  WDTRST = 0x1e;//89s52内狗
  WDTRST = 0xe1;//89s52内狗
}



/*------------------------------------
         定时器T0中断服务程序
------------------------------------*/
void t0proc() interrupt TF0_VECTOR using 1
{
}

/*------------------------------------
         定时器T1中断服务程序
------------------------------------*/
void t1proc() interrupt TF1_VECTOR using 1
{
}

/*------------------------------------
         定时器T2中断服务程序(5mS)
------------------------------------*/
void t2proc() interrupt TF2_VECTOR using 0
{
unsigned char key;
code unsigned char KeyPosTab[] = {0x01, 0x02, 0x04, 0x08};
  TF2 = 0;
  if (PCON & GF0_) {//中断是从主循环内跳入的才能喂狗
    ClrWdt();//清除看门狗计数器
    PCON &= ~GF0_;//清除标志 
  }
  key = ~P0;//接收键盘数据每次可取多键)
  if (key & KeyPosTab[SystemBuffers.TimeCount & 0x03]) {//有键压下(每次只取1键以实现“零耗时消除键盘抖动”)
    SystemBuffers.KeyCount[SystemBuffers.TimeCount & 0x03] ++;//压键计数
    if (SystemBuffers.KeyCount[SystemBuffers.TimeCount & 0x03] == 2) {//短压键
      SystemBuffers.WaitTime = 0;
      KeyCommandExec(0, SystemBuffers.TimeCount & 0x03);//单击键Key00()~Key03()
    }
    else if (SystemBuffers.KeyCount[SystemBuffers.TimeCount & 0x03] >= SysPushKeyTime) {//长压键150 * 20mS = 3。0S
      SystemBuffers.WaitTime = 0;
      KeyCommandExec(2, SystemBuffers.TimeCount & 0x03);//长压键Key20()~Key23()
      SystemBuffers.KeyCount[SystemBuffers.TimeCount & 0x03] = 3;//清除长压键计数器(躲过单击键)
    }
  }
  else {//无键压下(包括放键)
    if (SystemBuffers.KeyCount[SystemBuffers.TimeCount & 0x03] >= 2) {//放键事件
      SystemBuffers.WaitTime = 0;
      KeyCommandExec(1, SystemBuffers.TimeCount & 0x03);//键释放Key10()~Key13()
    }
    else {
      nRFReadWrite();//无线收发模块
    }
    SystemBuffers.KeyCount[SystemBuffers.TimeCount & 0x03] = 0;//清除压键计数器
  }
  SystemBuffers.TimeCount++;//继续下1个5mS延时
  if ((SystemBuffers.TimeCount & ~0x80) >= 100){//5mS*100=500mS
    SystemBuffers.WaitTime ++;
    if (SystemBuffers.WaitTime >= SysWaitTime) {//0.5*20=10S
      P0 = 0xff;//关显示
      SystemBuffers.WaitTime = 0;
    }
    SystemBuffers.TimeCount &= 0x80;
    SystemBuffers.TimeCount ^= 0x80;//取反闪烁位
  }
}

/*------------------------------------*/
void sioproc() interrupt SIO_VECTOR using 1
{
unsigned char i;
  if (RI) {//接收中断
    RI = 0;
    if (SioBuffers.SioRXCount && (SioBuffers.SioRXCount <= 32)) {//允许串口接收数据
      SioBuffers.SioRxBuff[32 - SioBuffers.SioRXCount] = SBUF;
      SioBuffers.SioRXCount --;
      if (SioBuffers.SioRXCount == 0) {
           for (i = 0; i < 32; i ++) {
          SioBuffers.SioTxBuff = SioBuffers.SioRxBuff;//自收自发
          SystemBuffers.nRFTxBuff = SioBuffers.SioTxBuff;//更新无线发送数据
        }
/*
        switch(SystemBuffers.nRFTxBuff[9]) {
          case 0x81: LED0 = 0;break;
          case 0x82: LED1 = 0;break;
          case 0x83: LED2 = 0;break;
          case 0x84: LED3 = 0;break;
          case 0x03: LED2 = 0;break;
          case 0x04: LED3 = 0;break;
        }
*/
        SioBuffers.SioRXCount = 32;//串口接收缓冲区满
        SioBuffers.SioTXCount = 32;//串口发送缓冲区满
        TI = 1;//立即发送
        SystemBuffers.nRFTxCount = 32;//要求间接无线发送
      }
    }
    else SioBuffers.SioRXCount = 0;//不允许串口接收数据
  }
  if (TI) {//发送中断
    TI = 0;
       if (SioBuffers.SioTXCount && (SioBuffers.SioTXCount <= 32)) {//允许串口发送数据
      SBUF = SioBuffers.SioTxBuff[32 - SioBuffers.SioTXCount];//串口显示
      SioBuffers.SioTXCount --;
    }
    else SioBuffers.SioTXCount = 0;//不允许串口发送数据
  }
}


//执行键盘命令
void KeyCommandExec(unsigned char commgroup, unsigned char commnum) using 0
{
unsigned int i;
unsigned key;
code void *KeyArray[3][4] = {//二维函数数组指针阵列表(散转命令地址表)
  {(void *)Key00 + 0x5b7d, (void *)Key01 + 0xa6ea, (void *)Key02 + 0xf157, (void *)Key03 + 0x4cc4},
  {(void *)Key10 + 0x9731, (void *)Key11 + 0xe2ae, (void *)Key12 + 0x3d1b, (void *)Key13 + 0x8888},
  {(void *)Key20 + 0xd3f5, (void *)Key21 + 0x2e62, (void *)Key22 + 0x79df, (void *)Key23 + 0xc44c} 
  };
  if ((commgroup < 3) && (commnum < 4)) {
    ClrWdt();//清除看门狗计数器
    key = commgroup * 4 + commnum + 1;
    i = ((key * 53 & 0xf) * 0x1000)+ ((key * 43 & 0xf) * 0x100) + ((key * 23 & 0xf) * 0x10) + (key * 13 & 0xf);
    _icall_((void *)KeyArray[commgroup][commnum] - i);//键盘命令散转
  }
}


void BeepSetup(unsigned char mode)
{
//  BeepBuffers.BeepCount = 1;
//  BeepBuffers.BeepMode  = mode;
//  BeepBuffers.BeepValue = mode;
}
/*----------------------------------
      蜂鸣器100mS发声程序
----------------------------------*/
void Beep(void)//蜂鸣器发声
{
//  BeepBuffers.BeepCount --;
//  if (BeepBuffers.BeepCount == 0){
//    BeepBuffers.BeepCount = 0;
//    BeepBuffers.BeepValue = BeepBuffers.BeepMode;
//    if (BeepBuffers.BeepValue >= 0x80)//单声
//      BeepBuffers.BeepMode = 0;       //单声清除
//  }
//  BeepBuffers.BeepValue <<= 1;
//  CY = ~CY;    //硬件反向
//  BeepOut = CY;//发声
}

void KeyInit(void) using 0//键盘初始化
{
unsigned char i;
  for (i = 0; i < 4; i++){
    SystemBuffers.KeyCount = 0;//清除键盘压键次数缓冲区
  }
}

//收发无线读写模块
void nRFReadWrite(void)
{
unsigned char i;
unsigned int t;    
  if (!TX_EN && DR && AM) {//收到数据
    ClrWdt();
    TRX_CE = 0;//设置nRF905为待机方式
    _nop_();
    CSN=0;                        // Spi enable for write a spi command
    SpiReadWrite(RRP);                // Read payload command    
    for (i = 0; i < 32; i++)
    {
        SystemBuffers.nRFRxBuff=SpiReadWrite(0xff);//读入无线接收缓冲区
    }
    CSN=1;                        // Disable spi
    TRX_CE = !TX_EN;//再回到原来的无线收发模式
//    TRX_CE = 1;//再回到接收模式
    switch(SystemBuffers.nRFRxBuff[9]) {
      case 0x81: LED0 = 0;break;
      case 0x82: LED1 = 0;break;
      case 0x83: LED2 = 0;break;
      case 0x84: LED3 = 0;break;
      case 0x01: LED0 = 0;break;
      case 0x02: LED1 = 0;break;
      case 0x03: LED2 = 0;break;
      case 0x04: LED3 = 0;break;
    }
    SystemBuffers.WaitTime = 0;
    while(DR || AM);    
    SystemBuffers.nRFRxCount = 32;//收到32个字节数据
    if (SioBuffers.SioTXCount == 0){//串口数据已发送完
      for (i = 0; i < 32; i ++)
        SioBuffers.SioTxBuff = SystemBuffers.nRFRxBuff;//串口显示
      SioBuffers.SioTXCount = 32;//发送32个字节的显示数据
      TI = 1;//立即显示
    }
  }
  else if(!CD && (SystemBuffers.nRFRxCount == 32)) {//接收命令处理
    SystemBuffers.nRFRxCount = 0;
    for (i = 0; i < 4; i ++)
      SystemBuffers.nRFTxBuff = SystemBuffers.nRFRxBuff[i + 4];//写入串口接收缓冲区
    for (i = 4; i < 8; i ++)
      SystemBuffers.nRFTxBuff = SystemBuffers.nRFRxBuff[i - 4];//写入串口接收缓冲区
    for (i = 8; i < 32; i ++)
      SystemBuffers.nRFTxBuff = SystemBuffers.nRFRxBuff;//写入串口接收缓冲区
    if (SystemBuffers.nRFRxBuff[9] == 0x80) {//系统消息请求
      SystemBuffers.nRFTxBuff[9]  = 0x00;//主机系统消息应答
      ReadnRFConfig(SystemBuffers.nRFTxBuff);
      SystemBuffers.nRFTxCount = 32;//主机要求间接无线发送
    }
    else if (SystemBuffers.nRFRxBuff[9] == 0x81) {//子机请求
//      LED0 = 0;//主机灯亮
      SystemBuffers.nRFTxBuff[9]  = 0x01;//主机应答
      SystemBuffers.nRFTxBuff[10] = 0x20;
      SystemBuffers.nRFTxBuff[11] = 0x04;
      SystemBuffers.nRFTxBuff[12] = 0x10;
      SystemBuffers.nRFTxBuff[13] = 0x18;
      SystemBuffers.nRFTxBuff[14] = 0x11;
      SystemBuffers.nRFTxBuff[15] = 0x28;
      SystemBuffers.nRFTxCount = 32;//主机要求间接无线发送
    }
    else if (SystemBuffers.nRFRxBuff[9] == 0x82) {//子机请求
//      LED1 = 0;//主机灯亮
      SystemBuffers.nRFTxBuff[9] =  0x02;//主机应答
      SystemBuffers.nRFTxBuff[10] = 0x20;