nrf905.txt

NRF905 具备跳号跳频和跳址的nrf905的C51演示程序

/*----------------------------------------------------------
    具备跳号跳频和跳址的nrf905的C51演示程序
[e-mail]   2006.6.6  于大雁塔村队部
----------------------------------------------------------*/
//#pragma src
＃i nclude <REGX52.h>
＃i nclude <stdio.h>
＃i nclude <absacc.h>
＃i nclude <intrins.h>
/*---------------------*/
＃i nclude <nrf905.h>
＃i nclude "hotins.h"
/*---------------------*/
#pragma NOAREGS

void MainInit(void);//系统初始化
void SystemInit(void);//系统初始化
void SystemSetup(void);//系统设置
void SystemIoInit(void);//系统接口初始化
void TimeInit(void);//定时器定时参数设置
void UserSetup(void);//用户运行环境设置
void ClrWdt(void);//喂狗
void BeepSetup(unsigned char mode);//蜂鸣器发声模式设置
void Beep(void);//蜂鸣器发声驱动
void KeyInit(void);//键盘初始化
void KeyCommandExec(unsigned char commgroup, unsigned char commnum);//执行键盘命令

void Key00(void);//压键事件
void Key01(void);
void Key02(void);
void Key03(void);

void Key10(void);//放键事件
void Key11(void);
void Key12(void);
void Key13(void);

void Key20(void);//长键事件
void Key21(void);
void Key22(void);
void Key23(void);

/*-----------------------------------------------
        nrf905库函数定义
------------------------------------------------*/
unsigned char SpiReadWrite(unsigned char);
void WriteTXBuffer(const unsigned char[]);
unsigned char ReadStatus(void);
void nRFPowerUP(void);
void nRFInit(void);//无线模块初始化
unsigned char VerifynRFConfig(void);//校验配置nRF905
void WritenRFConfig(unsigned char[]);//写配置nRF905
void ReadnRFConfig(unsigned char[]);//读配置nRF905
void FastWritenRFConfig(unsigned char);//快速配置nRF905
void SetTxMode(void);//设置发送模式
void SetRxMode(void);//设置接收模式
void StartTx(void);//开始发送
void nRFReadWrite(void);//无线收发模块


data SystemData SystemBuffers;//申请系统数据结构
idata SioData SioBuffers;//申请系统数据结构

/*------------------------------------------------
        SPI读写一体化函数SpiReadWrite()
入口参数:
        val  写入命令或数据
出口参数:
        R7   读出数据
------------------------------------------------*/
unsigned char SpiReadWrite(unsigned char val) using 0
{
unsigned char i;
  ACC = val;
  for (i = 8; i > 0; i --)
  {
     CY = MISO;//取数据SO
    _rlca_();//存数据ACC.0读数据ACC.7同时进行，acc循环左移，acc.7移入cy(出)，cy(入)移到acc.0
    MOSI = CY;//送数据SI
    SCK = 1;//上升沿打入数据
    _nop_();
    SCK  = 0;//下降沿读入数据(首次为假动作)
  }
  return ACC;
}

/*------------------------------------------------
        写入nRF905发送数据函数WriteTXBuffer()
入口参数:
        buffer 发送数据包
出口参数:
        无
------------------------------------------------*/
void WriteTXBuffer(const unsigned char buffer[]) using 0
{
unsigned char i;
  TRX_CE = 0;//设置nRF905为待机方式
  _nop_();
  CSN=0;//打开SPI    
  SpiReadWrite(WTA);//写发送地址
  for (i = 0; i < 4; i++)
  {
    SpiReadWrite(buffer);        // Write 32 bytes Tx data
  }
  CSN=1;//关闭SPI
  _nop_();
  CSN=0;                        // Spi enable for write a spi command    
  SpiReadWrite(WTP);                // Write payload command
  for (i = 0; i < 32; i++)
  {
    SpiReadWrite(buffer);        // Write 32 bytes Tx data
  }
  CSN=1;                        // Spi disable                        
  TRX_CE = !TX_EN;//
}

void FastWritenRFConfig(unsigned char low_ch_no) using 0
{
  TRX_CE = 0;//设置nRF905为待机方式
  _nop_();
  CSN=0;//打开SPI    
  SpiReadWrite(CC | PA_PWR_10dBm | HFREQ_PLL_433MHz | CH_NO_BIT8);
  SpiReadWrite(low_ch_no);//CH_NO
  CSN=1;                        // Spi disable                        
  TRX_CE = !TX_EN;//
}

void StartTx(void) using 0
{
  _nop_();
  _nop_();
  _nop_();
  TRX_CE=1;                    // Set TRX_CE high,start Tx data transmission
  _nop_();
  _nop_();
  _nop_();
  _nop_();
  _nop_();
  _nop_();
  _nop_();
  _nop_();
  _nop_();
  _nop_();
  TRX_CE=0;                    // Set TRX_CE low
}

/*------------------------------------------------
        读入nRF905状态函数ReadStatus()
入口参数:
        无
出口参数:
        nRF905状态字
------------------------------------------------*/
unsigned char ReadStatus(void) using 0
{
unsigned char val;
  CSN = 0;//打开SPI
  val = SpiReadWrite(RC);//读状态
  CSN = 1;//关闭SPI
  return val;//返回nRF905状态字
}

void nRFPowerUP(void) using 0
{
  CSN    = 1;//关闭SPI                        
  SCK    = 0;//拉低时钟
  DR     = 1;//设置DR为输入方式
  AM     = 1;//设置AM为输入方式
  PWR_UP = 1;// nRF905上电
  TRX_CE = 0;//设置nRF905为待机方式
  TX_EN  = 0;//设置接收方式    
}


void main(void)
{
//  ReadnRFConfig(SystemBuffers.nRFTxBuff);

  MainInit();//系统初始化
  while (1) {//主循环
    IE   |= 0xb2;//保证中断可靠EA,ET2,ES,ET0
    TCON |= 0x55;//保证定时器开
    PCON |= SMOD_ + GF0_ + IDL_;//进入空闲状态并喂软件狗
    _nop_();
    _nop_();
  }
}

void MainInit(void) using 0//系统初始化
{
  _start_();
  ClrWdt();//清除看门狗计数器
  SystemIoInit();//系统接口初始化
  SystemInit();//系统上电初始化
  SystemSetup();//系统运行环境设置
  UserSetup();//用户运行环境设置
}

void SystemInit(void) using 0//系统初始化
{
unsigned char i;
  for (i = 0; i < 32; i ++) {
    SioBuffers.SioTxBuff = 0;
    SioBuffers.SioRxBuff = 0;
  }
  if (SystemBuffers.RamTest != 0x55aa) {//内存初始化
    for (i = 0; i < 32; i ++) {
      SystemBuffers.nRFTxBuff = 0;
      SystemBuffers.nRFRxBuff = 0;
    }
    SystemBuffers.nRFRxBuff[0] = RX_ADDRESS_0;//本机地址
    SystemBuffers.nRFRxBuff[1] = RX_ADDRESS_1;
    SystemBuffers.nRFRxBuff[2] = RX_ADDRESS_2;
    SystemBuffers.nRFRxBuff[3] = RX_ADDRESS_3;
    SystemBuffers.nRFRxBuff = CH_NO_BYTE;
    SystemBuffers.nRFTxBuff = CH_NO_BYTE;
    SystemBuffers.RamTest = 0x55aa;
  }
  else {
  }
}

void SystemSetup(void) using 0//系统设置
{
  TimeInit();
  IP = 0x05;//中断优先级EX0>EX1>ET0>ET1
  SystemBuffers.TestTime = 0;
  SystemBuffers.WaitTime = 0;
}

void TimeInit() using 0
{
//  TCON = 0x55;//启动定时器
/*----------------------------------
      定时器0定时参数设置
----------------------------------*/
  TL0 = 0;
  TH0 = 0;
  TR0 = 1;//启动定时器0
/*----------------------------------
      定时器1定时参数设置
----------------------------------*/
  TMOD = 0x20;                //timer1 working mode 1
  TL1 = 0xfd;                    //f7=9600 for 16mhz Fosc,and ... 
  TH1 = 0xfd;                    //...fd=19200 for 11.0592mhz Fosc
  SCON = 0xd8;                //uart mode 3,ren==1
  PCON = 0x80;
  SioBuffers.SioTXCount = 0;//无发送数据
  SioBuffers.SioRXCount = 32;//允许接收串口数据
  TR1 = 1;//启动定时器1
/*----------------------------------
      定时器2定时参数设置
----------------------------------*/
  TIMEER2 = T2_5mS;
  RCAP    = T2_5mS;
  TR2     = 1;//启动定时器2
}

void nRFInit(void) using 0//无线模块初始化
{
  do{
    WritenRFConfig(SystemBuffers.nRFRxBuff);//配置nRF905
  }
  while(VerifynRFConfig());
  SetRxMode();//设置接收模式
  SystemBuffers.nRFTxCount = 0;//清空无线发送数据缓冲区
  SystemBuffers.nRFRxCount = 0;//清空无线接收数据缓冲区
}

void ReadnRFConfig(unsigned char rxaddr[]) using 0//读配置nRF905
{
unsigned char i;
  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
  for (i = 10; i < 20; i ++) rxaddr = SpiReadWrite(0xff);
  CSN = 1;                        // Disable Spi
  TRX_CE = !TX_EN;//
}

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