#include //----------------------------------RF4432配置口定义--------------------------------------- //sbit RF4432_PAC=P2^4; //收发模式切换控制端 sbit RF4432_SDO=P3^5; //SPI数据输出 sbit RF4432_SDI=P3^4; //SPI数据输入 sbit RF4432_SCLK=P3^7; //SPI时钟输入端口 sbit RF4432_SEL=P3^3; //SPI片选 sbit RF4432_IRQ=P3^2; //SI4432工作状态指示端口 sbit KEY=P3^6; //BLT53A上电控制端 sbit LED_GREEN=P2^1; sbit P15=P1^5; //-------------------------射频芯片相关定义-------------------------------------------- #define RF4432_TxRxBuf_Len 32 //定义RF4432数据包长度 char RF4432_TxRxBuf[RF4432_TxRxBuf_Len]; unsigned char Packet[30]={9,20,30,21,15,58,56,69,25,23,12,25,56,22,23,24};//Transmit packet unsigned char Length=4; unsigned char Data_Buf[10]; unsigned char Data_Len; typedef enum _RF_ENUM { RF_OK = 0x00, //function response parameters RF_ERROR_TIMING = 0x01, RF_ERROR_PARAMETER = 0x02, RF_PACKET_RECEIVED = 0x03, RF_NO_PACKET = 0x04, RF_CRC_ERROR = 0x05, } RF_ENUM; //----------------------------RF4432 配置寄存器地址-------------------------------- #define DEVICE_TYPE 0x00 #define EVICE_VERSION 0x01 //版本号 #define DEVICE_STATUS 0x02 //设备状态 #define INTERRUPT_STATUS_1 0x03 #define INTERRUPT_STATUS_2 0x04 #define INTERRUPT_ENABLE_1 0x05 #define INTERRUPT_ENABLE_2 0x06 #define OPERATING_FUNCTION_CONTROL_1 0x07 //工作模式和功能控制1 #define OPERATING_FUNCTION_CONTROL_2 0x08 //工作模式和功能控制2 #define CRYSTAL_OSCILLATOR_LOAD_CAPACITANCE 0x09 //晶振负载电容设置 #define MICROCONTROLLER_OUTPUT_CLOCK 0x0A #define GPIO0_CONFIGURATION 0x0B //GPIO0功能设置寄存器见英文文档第105页 #define GPIO1_CONFIGURATION 0x0C #define GPIO2_CONFIGURATION 0x0D #define IO_PORT_CONFIGURATION 0x0E #define ADC_CONFIGURATION 0x0F #define ADC_SENSOR_AMPLIFIER_OFFSET 0x10 #define ADC_VALUE 0x11 #define TEMPERATURE_SENSOR_CONTROL 0x12 //温度传感器校准 #define TEMPERATURE_VALUE_OFFSET 0x13 #define WAKE_UP_TIMER_PERIOD_1 0x14 #define WAKE_UP_TIMER_PERIOD_2 0x15 #define WAKE_UP_TIMER_PERIOD_3 0x16 #define WAKE_UP_TIMER_VALUE_1 0x17 #define WAKE_UP_TIMER_VALUE_2 0x18 #define LOW_DUTY_CYCLE_MODE_DURATION 0x19 #define LOW_BATTERY_DETECTOR_THRESHOLD 0x1A //低压检测阈值寄存器 #define BATTERY_VOLTAGE_LEVEL 0x1B #define IF_FILTER_BANDWIDTH 0x1C //中频滤波器带宽寄存器 #define AFC_LOOP_GEARSHIFT_OVERRIDE 0x1D #define AFC_TIMING_CONTROL 0x1E #define CLOCK_RECOVERY_GEARSHIFT_OVERRIDE 0x1F #define CLOCK_RECOVERY_OVERSAMPLING_RATIO 0x20 #define CLOCK_RECOVERY_OFFSET_2 0x21 #define CLOCK_RECOVERY_OFFSET_1 0x22 #define CLOCK_RECOVERY_OFFSET_0 0x23 #define CLOCK_RECOVERY_TIMING_LOOP_GAIN_1 0x24 #define CLOCK_RECOVERY_TIMING_LOOP_GAIN_0 0x25 #define RECEIVED_SIGNAL_STRENGTH_INDICATOR 0x26 #define RSSI_THRESHOLD_FOR_CLEAR_CHANNEL_INDICATOR 0x27 #define ANTENNA_DIVERSITY_REGISTER_1 0x28 #define ANTENNA_DIVERSITY_REGISTER_2 0x29 #define DATA_ACCESS_CONTROL 0x30 #define EZMAC_STATUS 0x31 #define HEADER_CONTROL_1 0x32 //Header 起始码设置 #define HEADER_CONTROL_2 0x33 #define PREAMBLE_LENGTH 0x34 //前导码长度 #define PREAMBLE_DETECTION_CONTROL 0x35 //前导码检测设置 #define SYNC_WORD_3 0x36 //同步字节 #define SYNC_WORD_2 0x37 #define SYNC_WORD_1 0x38 #define SYNC_WORD_0 0x39 #define TRANSMIT_HEADER_3 0x3A #define TRANSMIT_HEADER_2 0x3B #define TRANSMIT_HEADER_1 0x3C #define TRANSMIT_HEADER_0 0x3D #define TRANSMIT_PACKET_LENGTH 0x3E //发送数据包长度，详细请看P125页#define CHECK_HEADER_3 0x3F #define CHECK_HEADER_2 0x40 #define CHECK_HEADER_1 0x41 #define CHECK_HEADER_0 0x42 #define HEADER_ENABLE_3 0x43 #define HEADER_ENABLE_2 0x44 #define HEADER_ENABLE_1 0x45 #define HEADER_ENABLE_0 0x46 #define RECEIVED_HEADER_3 0x47 #define RECEIVED_HEADER_2 0x48 #define RECEIVED_HEADER_1 0x49 #define RECEIVED_HEADER_0 0x4A #define RECEIVED_PACKET_LENGTH 0x4B //接收数据包长度，详细请看P134页#define ANALOG_TEST_BUS 0x50 #define DIGITAL_TEST_BUS_ENSCTEST_ 0x51 #define TX_RAMP_CONTROL 0x52 #define PLL_TUNE_TIME 0x53 //锁相环切换时间 #define CALIBRATION_CONTROL 0x55 #define MODEM_TEST 0x56 #define CHARGEPUMP_TEST 0x57 #define CHARGEPUMP_CURRENT_TRIMMING_OVERRIDE 0x58 #define DIVIDER_CURRENT_TRIMMING 0x59 #define VCO_CURRENT_TRIMMING 0x5A #define VCO_CALIBRATION_OVERRIDE 0x5B #define SYNTHESIZER_TEST 0x5C #define BLOCK_ENABLE_OVERRIDE_1 0x5D #define BLOCK_ENABLE_OVERRIDE_2 0x5E #define BLOCK_ENABLE_OVERRIDE_3 0x5F #define CHANNEL_FILTER_COEFFICIENT_ADDRESS 0x60 #define CHANNEL_FILTER_COEFFICIENT_VALUE 0x61 #define CRYSTAL_OSCILLATOR_CONTROL_TEST 0x62 #define RC_OSCILLATOR_COARSE_CALIBRATION_OVERRIDE 0x63 #define RC_OSCILLATOR_FINE_CALIBRATION_OVERRIDE 0x64 #define LDO_CONTROL_OVERRIDE_ENSPOR 0x65 #define LDO_LEVEL_SETTING 0x66 #define DELTASIGMA_ADC_TUNING_1 0x67 #define DELTASIGMA_ADC_TUNING_2 0x68 #define AGC_OVERRIDE_1 0x69 #define AGC_OVERRIDE_2 0x6A #define GFSK_FIR_FILTER_COEFFICIENT_ADDRESS 0x6B #define GFSK_FIR_FILTER_COEFFICIENT_VALUE 0x6C #define TX_POWER 0x6D //发射功率设置,详细请见P153 #define TX_DATA_RATE_1 0x6E //数据发送波特率设置寄存器1 #define TX_DATA_RATE_0 0x6F //数据发送波特率设置寄存器0 #define MODULATION_MODE_CONTROL_1 0x70 //调制方式控制,详细请见P155 #define MODULATION_MODE_CONTROL_2 0x71 #define FREQUENCY_DEVIATION 0x72 #define FREQUENCY_OFFSET_1 0x73 #define FREQUENCY_OFFSET_2 0x74 #define FREQUENCY_BAND_SELECT 0x75 //频段选择,详细请见P157 #define NOMINAL_CARRIER_FREQUENCY_1 0x76 //基准载波频率 #define NOMINAL_CARRIER_FREQUENCY_0 0x77 #define FREQUENCY_HOPPING_CHANNEL_SELECT 0x79 //跳频频道选择,详细请见P158 #define FREQUENCY_HOPPING_STEP_SIZE 0x7A //跳频频道间隔 #define TX_FIFO_CONTROL_1 0x7C #define TX_FIFO_CONTROL_2 0x7D #define RX_FIFO_CONTROL 0x7E #define FIFO_ACCESS 0x7F //FIFO读写方式设置， //-------------------------------RF4432控制指令--------------------------------------------- #define RR 0x00 #define WR 0x80 //------------------------------------------------延时------------------------------ void delay_10us(char n) { int i; while(n--) for(i=0;i<5;i++); } void delay_ms(int num) { int x,y; for(y=0;y //------------------------------------SPI单字节读取函数------------------------------------- unsigned char SPI_Read(void) { unsigned char i,rxdata; rxdata = 0x00; for (i = 0;i < 8;i++) { rxdata = rxdata<<1; RF4432_SCLK=1; RF4432_SDO=1; if (RF4432_SDO==1) //读取最高位，保存至最末尾，通过左移位完成整个字节 { rxdata |= 0x01; } else { rxdata &= ~0x01; } delay_10us(2); RF4432_SCLK=0; delay_10us(2); } return rxdata; } //--------------------------SPI单字节写入函数---------------------------------------------- void SPI_Write(unsigned char txdata) { unsigned char i; for (i = 0;i < 8;i++) { if (txdata&0x80) //总是发送最高位 { RF4432_SDI=1; } else { RF4432_SDI=0; } RF4432_SCLK=1; txdata = txdata<<1; RF4432_SCLK=0; } } //---------------------RF4432寄存器读取函数--------------------------------------------------- void RF4432_ReadReg(unsigned char addr, unsigned char *RegisterData) { RF4432_SEL=0; SPI_Write(addr|RR); *RegisterData = SPI_Read(); RF4432_SEL=1; } //----------------RF4432寄存器写入函数---------------------------------------------------------- void RF4432_WriteReg(unsigned char addr, unsigned char value) { RF4432_SEL=0; SPI_Write(addr|WR); SPI_Write(value); RF4432_SEL=1; } //-----------------------RF4432寄存器读取函数--------------------------------------------- void RF4432_ReadBurestReg(unsigned char addr,unsigned char *p,unsigned char count) { unsigned char i; RF4432_SEL=0; SPI_Write(addr|RR); for(i=0;i RF4432_SEL=1; } //---------------------------------RF4432射频芯片初始化函数------------------------------------ void RF4432_Init(void) { unsigned char RegisterData; //unsigned int i,j; delay_ms(20);delay_ms(20); delay_ms(20);delay_ms(20); delay_ms(20);delay_ms(20); RF4432_ReadReg(0x03,&RegisterData);//read the Interrupt Status1 register RF4432_ReadReg(0x04,&RegisterData);//read the Interrupt Status2 register //SW reset RF4432_WriteReg(0x07, 0x80);//write 0x80 to the Operating & Function Control1 register //wait for chip ready interrupt from the radio (while the nIRQ pin is high) while(RF4432_IRQ); //read interrupt status registers to clear the interrupt flags and release NIRQ pin RF4432_ReadReg(0x03, &RegisterData); RF4432_ReadReg(0x04, &RegisterData); /*set the physical parameters*/ //set the center frequency to 434 MHz RF4432_WriteReg(0x75, 0x57); //write 0x75 to the Frequency Band Select register RF4432_WriteReg(0x76, 0x19); //write 0xBB to the Nominal Carrier Frequency1 register RF4432_WriteReg(0x77, 0x00); //write 0x80 to the Nominal Carrier Frequency0 register //set the desired TX data rate (9.6kbps) RF4432_WriteReg(0x6E, 0x13); //write 0x4E to the TXDataRate 1 register RF4432_WriteReg(0x6F, 0xA9); //write 0xA5 to the TXDataRate 0 register RF4432_WriteReg(0x70, 0x2C); //write 0x2C to the Modulation Mode Control 1 register RF4432_WriteReg(0x58, 0x80); //VCO //set the TX power to MAX RF4432_WriteReg(0x6D, 0x1F); //write 0x1F to the TX Power register /*set the modem parameters according to the exel calculator(parameters: 4.8 kbps, deviation: 50 kHz, channel filter BW: 102.2 kHz*/ RF4432_WriteReg(0x1C, 0xAD);//write 0x1E to the IF Filter Bandwidth register RF4432_WriteReg(0x20, 0xE2);//write 0xD0 to the Clock Recovery Oversampling Ratio register RF4432_WriteReg(0x21, 0x80);//write 0x00 to the Clock Recovery Offset 2 register RF4432_WriteReg(0x22, 0x1A);//write 0x9D to the Clock Recovery Offset 1 register RF4432_WriteReg(0x23, 0x37);//write 0x49 to the Clock Recovery Offset 0 register RF4432_WriteReg(0x24, 0x00);//write 0x00 to the Clock Recovery Timing Loop Gain 1 register RF4432_WriteReg(0x25, 0x04);//write 0x24 to the Clock Recovery Timing Loop Gain 0 register RF4432_WriteReg(0x1D, 0x44);//enable afc RF4432_WriteReg(0x1E, 0x0A); RF4432_WriteReg(0x2A, 0x2C); RF4432_WriteReg(0x1F, 0x03); RF4432_WriteReg(0x69, 0x60);//write 0x40 to the AFC Loop Gearshift Override register RF4432_WriteReg(0x72, 0x70);//write 0x48 to the Frequency Deviation register //set the preamble length to 10bytes if the antenna diversity is used and set to 5bytes if not RF4432_WriteReg(0x34, 0xCF); //write 0x0C to the Preamble Length register //set preamble detection threshold to 20bits RF4432_WriteReg(0x35, 0x20); //write 0x2A to the Preamble Detection Control register //Disable header bytes; set variable packet length (the length of the payload is defined by the //received packet length field of the packet); set the synch word to two bytes long RF4432_WriteReg(0x33, 0x02); //write 0x02 to the Header Control2 register //Set the sync word pattern to 0x2DD4 RF4432_WriteReg(0x36, 0x2D); //write 0x2D to the Sync Word 3 register RF4432_WriteReg(0x37, 0xD4); //write 0xD4 to the Sync Word 2 register //enable the TX & RX packet handler and CRC-16 (IBM) check RF4432_WriteReg(0x30, 0x8D); //write 0x8D to the Data Access Control register //Disable the receive header filters RF4432_WriteReg(0x32, 0x00 ); //write 0x00 to the Header Control1 register //enable FIFO mode and GFSK modulation RF4432_WriteReg(0x71, 0x2B); //write 0x63 to the Modulation Mode Control 2 register /*set the GPIO's according the testcard type*/ RF4432_WriteReg(0x0B, 0x0A); //write 0x12 to the GPIO0 Configuration(set the TX state) RF4432_WriteReg(0x0C, 0x0A); //write 0x15 to the GPIO1 Configuration(set the RX state) //set the AGC RF4432_WriteReg(0x69, 0x35); //write 0x0B to the AGC Override 2 register //set ADC reference voltage to 0.9V RF4432_WriteReg(0x68, 0x07); //write 0x04 to the Deltasigma ADC Tuning 2 register //set Crystal Oscillator Load Capacitance register RF4432_WriteReg(0x09, 0x7F); //write 0xD7 to the Crystal Oscillator Load Capacitance register RF4432_WriteReg(0x73,0x00); RF4432_WriteReg(0x74,0x00); //TxFIFOReset(); RF4432_WriteReg(0x08, 0x01); RF4432_WriteReg(0x08, 0x00); //RxFIFOReset(); RF4432_WriteReg(0x08, 0x02); RF4432_WriteReg(0x08, 0x00); } //-------------------------RF4432设置接收模式函数------------------------------------------ void RF4432_SetRxMode(void) { unsigned char RegisterData; RF4432_WriteReg(0x0E, 0x02);//Rx_EN; //enable the packet valid interrupt RF4432_WriteReg(0x05, 0xFF); RF4432_WriteReg(0x06, 0x00); RF4432_ReadReg(0x03, &RegisterData); RF4432_ReadReg(0x04, &RegisterData); //enable receiver chain RF4432_WriteReg(0x07, 0x05); } //---------------------------RF4432数据包接收函数------------------------------------------- unsigned char RF4432_RxPacket(void) { unsigned char temp; RF4432_IRQ=1; if(!RF4432_IRQ) { RF4432_ReadReg(INTERRUPT_STATUS_1,&temp); if(temp&0x02) { return 1; } } return 0; } void RFIdle(void) { unsigned char RegisterData; RF4432_WriteReg(0x07, 0x01); //diasble all ITs RF4432_WriteReg(0x05, 0x00); RF4432_WriteReg(0x06, 0x00); RF4432_ReadReg(0x03, &RegisterData); RF4432_ReadReg(0x04, &RegisterData); } void RFTransmit(unsigned char * packet, unsigned char length) { unsigned char temp; unsigned char RegisterData; RF4432_WriteReg(0x0E, 0x01);//Tx_EN; RF4432_WriteReg(0x3e, length); for(temp=0;temp } //enable the wanted ITs RF4432_WriteReg(0x05, 0x04); RF4432_WriteReg(0x06, 0x00); RF4432_ReadReg(0x03, &RegisterData); RF4432_ReadReg(0x04, &RegisterData); //enable transmitter RF4432_WriteReg(0x07, 0x09); while(RF4432_IRQ);//while(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_12)); RF4432_ReadReg(0x03, &RegisterData); RF4432_ReadReg(0x04, &RegisterData); } RF_ENUM RFPacketReceived(unsigned char * packet, unsigned char * length) { unsigned char i; unsigned char RegisterData; if( RF4432_IRQ == 0 ) { RF4432_ReadReg(0x03,&RegisterData); if( (RegisterData & 0x01) == 0x01 )//CRC error { RF4432_SetRxMode(); return RF_CRC_ERROR; } if( (RegisterData & 0x02) == 0x02 )//packet received { //read buffer RF4432_ReadReg(0x4b,length); for(i=0;i<*length;i++) { RF4432_ReadReg(0x7f,packet++); } RF4432_SetRxMode(); return RF_PACKET_RECEIVED; } } return RF_NO_PACKET; } void StartUART( void ) { SCON = 0x50; TMOD = 0x20; TH1 = 0XF4; TL1 = 0XF4; TR1 = 1; //允许定时器1工作 } //串口发送数 void R_S_Byte(unsigned char R_Byte) { SBUF = R_Byte; while( TI == 0 ); // TI = 0; } main() { //unsigned char i; KEY=1; LED_GREEN=0; StartUART(); RF4432_Init(); delay_ms(10); RF4432_SetRxMode();//RF4432设置接收模式函数 查询法 P15=1; while(1) { RF4432_WriteReg(0x0E, 0x02);//Rx_EN; LED_GREEN=1;//灯亮 RFTransmit(Packet,Length);//发送数据 RFIdle();//进入空闲模式 delay_ms(10); RF4432_SetRxMode();//RF4432设置接收模式函数 while(RFPacketReceived(Data_Buf,&Data_Len) != RF_PACKET_RECEIVED);//waiting for receiving RFIdle(); RF4432_ReadReg(0x26,&Data_Buf[1]); LED_GREEN=0; delay_ms(200); delay_ms(200); /*RF4432_SetRxMode(); LED_GREEN=0; //============================================================================================================ if(RF4432_RxPacket()) //判断是否接收到数据 { LED_GREEN=1; RF4432_ReadBurestReg(FIFO_ACCESS,RF4432_TxRxBuf,RF4432_TxRxBuf_Len); for(i=0;i<32;i++) { R_S_Byte(RF4432_TxRxBuf[i]); } RF4432_SetRxMode(); }*/ } } 因篇幅问题不能全部显示，请点此查看更多更全内容