原先的程序实现了无线传输,显示的是温度,但是现在要求显示无线传输的频率就可以了,这是同学那边拿来参考的,应该只要修改一下数码管显示部分就可以,希望高手可以帮个忙,本人小白看了快半个月了还么搞好,马上要中期检查,很急,希望高手们帮帮忙!!不甚感激
程序如下:
- #include
- #include
- #include
- #include
- //----------------------------------------------------------------------------------------------------------------
- #define uint unsigned int
- #define uchar unsigned char
- //----------------------------------------------------------------------------------------------------------------
- #define BYTE_BIT0 0x01
- #define BYTE_BIT1 0x02
- #define BYTE_BIT2 0x04
- #define BYTE_BIT3 0x08
- #define BYTE_BIT4 0x10
- #define BYTE_BIT5 0x20
- #define BYTE_BIT6 0x40
- #define BYTE_BIT7 0x80
- //----------------------------------------------------------------------------------------------------------------
- bdata unsigned char DATA_BUF;
- #define DATA7 ((DATA_BUF&BYTE_BIT7) != 0)
- #define DATA0 ((DATA_BUF&BYTE_BIT0) != 0)
- ***it flag =DATA_BUF^7;
- ***it flag1 =DATA_BUF^0;
- //---------------------------------------------------nrf905控制指令列表-------------------------------------------
- #define WC 0x00
- #define RC 0x10
- #define WTP 0x20
- #define RTP 0x21
- #define WTA 0x22
- #define RTA 0x23
- #define RRP 0x24
- //---------------------------------------------------配置口定义---------------------------------------------------
- ***it TXEN=P1^0;
- ***it TRX_CE=P3^4;
- ***it PWR=P1^1;
- ***it MISO=P1^6;
- ***it MOSI=P1^5;
- ***it SCK=P1^7;
- ***it CSN=P1^3;
- //---------------------------------------------------NRF905状态IO----------------------------------------------------
- ***it AM=P1^4;
- ***it DR=P3^2;
- ***it CD=P1^2;
- //----------------------------------------------------按键-----------------------------------------------------------
- ***it KEY0=P3^6;
- ***it KEY1=P3^7;
- //----------------------------------------------------数码管位控制---------------------------------------------------
- ***it led1=P2^2;
- ***it led0=P2^3;
- ***it led2=P2^1;
- ***it led3=P2^0;
- ***it led4=P2^4; //指示灯LED2,低电平时亮,高电平时暗
- ***it led5=P2^7; //指示灯LED1,低电平时亮,高电平时暗
-
- ***it BELL=P2^6;
- //----------------------------------------------------温度传感器(或者温湿度)--------------------------------------------------
- ***it DQ=P3^5;
- //------------------------------------------------NRF905寄存器配置------------------------------------------------
- unsigned char idata RFConf[11]=
- {
- 0x00, //配置命令:SPI指令WC
- 0x4c, //CH_NO,配置频段在430MHZ
- 0x0c, //输出功率为10db,不重发,节电为正常模式
- 0x44, //地址宽度设置,为4字节
- 0x04,0x04, //接收发送有效数据长度为4字节
- 0xCC,0xCC,0xCC,0xCC, //接收地址
- 0x58, //CRC充许,8位CRC校验,外部时钟信号不使能,16M晶振
- };
- //-----------------------------------------------------------------------------------------------------------------
- uchar seg[10]={0xC0,0xCF,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90}; //0~~9段码
- //---------------------------------------------------发送数据缓冲区-------------------------------------------------
- #define TxRxBuf_Len 4
- uchar TxRxBuf[TxRxBuf_Len]={0x29,0x30,0x31,0x32,};
- code TxAddress[4]={0xcc,0xcc,0xcc,0xcc};
- char tf;
- //------------------------------------------------延时------------------------------------------------------------
- static void Delay(uchar n)
- {
- uint i;
- while(n--)
- for(i=0;i<80;i++);
- }
- //---------------------------------------------------SPI读函数-----------------------------------------------------
- unsigned char SpiRead(void)
- {
- unsigned char j;
- for (j=0;j<8;j++)
- {
- DATA_BUF=DATA_BUF<<1;
- SCK=1;
- if (MISO) //读取最高位,保存至最末尾,通过左移位完成整个字节
- {
- DATA_BUF|=BYTE_BIT0;
- }
- else
- {
- DATA_BUF&=~BYTE_BIT0;
- }
- SCK=0;
- }
- return DATA_BUF;
- }
- //-------------------------------------------------SPI写函数----------------------------------------------------------
- void SpiWrite(unsigned char send)
- {
- unsigned char i;
- DATA_BUF=send;
- for (i=0;i<8;i++)
- {
- if (DATA7) //总是发送最高位
- {
- MOSI=1;
- }
- else
- {
- MOSI=0;
- }
- SCK=1;
- DATA_BUF=DATA_BUF<<1;
- SCK=0;
- }
- }
- //------------------------------------------------------初始化nRF905---------------------------------------------
- void nRF905Init(void)
- {
- CSN=1; // Spi disable
- SCK=0; // Spi clock line init low
- DR=1; // Init DR for input
- AM=0; // Init AM for input
- CD=0; // Init CD for input
- PWR=1; // nRF905 power on
- TRX_CE=0; // Set nRF905 in standby mode
- TXEN=0; // set radio in Rx mode
- }
- //-----------------------------------------------------初始化寄存器-----------------------------------------------
- void Config905(void)
- {
- uchar i;
- CSN=0; // Spi enable for write a spi command
- //SpiWrite(WC); // 因为RFConf[0]为0x00正好就是WC,所以不得把该语句注销
- for (i=0;i<11;i++) // Write configration words 写放配置字
- {
- SpiWrite(RFConf[i]);
- }
- CSN=1; // Disable Spi
- }
- //-----------------------------------------------------发送数据打包---------------------------------------------------
- void TxPacket(uchar *TxRxBuf)
- {
- uchar i;
- CSN=0;
- SpiWrite(WTP); // Write payload command
- for (i=0;i<4;i++)
- {
- SpiWrite(TxRxBuf[i]); // Write 32 bytes Tx data
- }// Spi enable for write a spi command
- CSN=1;
- Delay(1); // Spi disable
- CSN=0; // Spi enable for write a spi command
- SpiWrite(WTA); // 该部分地址必须和接收方初始配置的地址完全吻合配对才能建立通信
- for (i=0;i<4;i++) // Write 4 bytes address
- {
- SpiWrite(TxAddress[i]);
- }
- CSN=1; // Spi disable
- TRX_CE=1; // Set TRX_CE high,start Tx data transmission
- Delay(1); // while (DR!=1);
- TRX_CE=0; // Set TRX_CE low
- }
- //----------------------------------------------------------设置发送状态---------------------------------------------
- void SetTxMode(void)
- {
- TRX_CE=0;
- TXEN=1;
- Delay(1); // delay for mode change(>=650us)
- }
- //-----------------------------------------------设置发送状态---------------------------------------------------
- void SetRxMode(void)
- {
- TXEN=0;
- TRX_CE=1;
- Delay(100); // delay for mode change(>=650us)
- }
- //-------------------------------------------------判断数据接收状态-----------------------------------------------------
- unsigned char CheckDR(void) //检查是否有新数据传入 Data Ready
- {
- DR=1; //通过对端口写1,可以使端口为输入状态,这51的 特性。不熟悉者可以参阅51相关书籍作证(将DR端口设置为输入状态。)
- if (DR==1&&TRX_CE==1 && TXEN==0)
- {
- return 1;
- }
- else
- {
- return 0;
- }
- }
- //----------------------------------------------------读NRF905接收数据------------------------------------------------------------
- void RxPacket(void)
- {
- uchar i;
- TRX_CE=0;
- CSN=0; // Spi enable for write a spi command
- Delay(1);
- SpiWrite(RRP);
- for (i = 0 ;i < 4 ;i++)
- {
- TxRxBuf[i]=SpiRead(); // Read data and save to buffer
- }
- CSN=1;
- Delay(10);
- TRX_CE=1;
- }
- //--------------------------------------------------------数据接收------------------------------------------------
- void RX(void)
- {
- SetRxMode(); // Set nRF905 in Rx mode
- //while (CheckDR()==0);
- Delay(10);
- RxPacket();
-
- if(TxRxBuf[0]==0x29)
- {
- P0= seg[3];led5=0;Delay(50);led5=1;Delay(50);
- }
- if(TxRxBuf[0]==0x30)
- {
- P0= seg[4];led5=0;Delay(50);led5=1;Delay(50);
- }
- }
- //-----------------------------------------------------------------------------------------------------------------
- void main(void)
- {
- nRF905Init();
- Config905();
- BELL=0;
- P0= seg[0];led0=0;led1=0;led2=0;led3=0;
- Delay(50);
- BELL=1;
- while(1)
- {
- RX();
- if(KEY0 ==0 ) //检测按键。当检测到按键时,给发送数据缓冲器赋值
- {
- TxRxBuf[0]=0x29;TxRxBuf[1]=0x30;TxRxBuf[2]=0x31;TxRxBuf[3]=0x32;
- tf = 1 ;P0= seg[1];
- }
- if(KEY1 ==0 ) //不同按键,发送的命令也不同
- {
- TxRxBuf[0]=0x30;TxRxBuf[1]=0x31;TxRxBuf[2]=0x32;TxRxBuf[3]=0x29;
- tf = 1 ; P0= seg[2];
- }
- if (tf==1)
- {
- SetTxMode();
- TxPacket(TxRxBuf); // 发送数据
- tf = 0; TxRxBuf[0]=0;TxRxBuf[1]=0;TxRxBuf[2]=0;TxRxBuf[3]=0; //数据清零
- led4=0;Delay(50);led4=1;Delay(50);
- }
- }
- }
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