基于MSP430单片机驱动NRF24L01无线模块发送C语言程序

MCU：MSP430F16X系列，RF无线模块：NRF24L01，液晶显示：ST7920串行控制128*64液晶，发送数据是把4X4矩阵键盘对应的键值发送出去。IRQ是采用中断查询法，具体的可以参考下面代码：

//p4口为液晶屏//p1口中断//nRF24L01无线通信//p5.0  csn    //p5.1  mosi//p5.3  sck//p5.2  miso//p1.2  irq//p5.7  ce//ST7920串行控制128*64液晶//rst  p4.3   复位//rs   p4.0   片选//rw   p4.1    数据//E    p4.2    时钟#include #include #define uchar unsigned char#define uint unsigned int#define ulong unsigned long#define LCD_CLK_1   (P4OUT |=  BIT2)#define LCD_CLK_0   (P4OUT &=~ BIT2)#define LCD_D_1   (P4OUT |=  BIT1)#define LCD_D_0   (P4OUT &=~ BIT1)#define LCD_RST_1  (P4OUT |=  BIT3)#define LCD_RST_0  (P4OUT &=~ BIT3)#define LCD_CS_1 (P4OUT |= BIT0)#define LCD_CS_0 (P4OUT &= ~BIT0)#define TMP121_CS_1 (P5OUT |= BIT7)#define TMP121_CS_0 (P5OUT &= ~BIT7)#define TMP121_CLK_1 (P5OUT |= BIT3)#define TMP121_CLK_0 (P5OUT &= ~BIT3)#define send_1 (P2OUT |= BIT0)#define send_0 (P2OUT &= ~BIT0)#define CPU_F ((double)1000000) // MCLK=1MHZ主频#define Delayus_us(x) __Delayus_cycles((long)(CPU_F*(double)x/1000000.0))#define Delayus_ms(x) __Delayus_cycles((long)(CPU_F*(double)x/1000.0))#define Delayus_s(x) __Delayus_cycles((long)(CPU_F*(double)x/1.0))uint  alldata[32],keyflg;uchar char11[16]={0,1,2,3,4,5,6,7,8,9,a,b,c,d,e,f};uchar busy=A,hang,lie,flash_flag,bostart;uchar key0=0,key1=T,key2,boflg,flg,key2flg=0,tab1=1,newsflag1,newsflag2;uchar key11,key12;uint LCDL;uchar tu[32][32]={0x00};uint Rdata[8]={0},botu[98]={0x0000};uchar Tx_Payload[32]={4,1,9};uchar Tx_Address[5]={100,101,102,103,104};void Delayus(ulong ilinshi){ ulong ii;for(ii=0;ii<=ilinshi;ii++){key0=key0;}}#define nRF24L01_CE_1   (P5OUT|= BIT7)#define nRF24L01_CE_0   (P5OUT&=~BIT7)#define nRF24L01_CSN_1  (P5OUT|= BIT0)#define nRF24L01_CSN_0  (P5OUT&=~BIT0)#define nRF24L01_SCK_1  (P5OUT|= BIT3)#define nRF24L01_SCK_0  (P5OUT&=~BIT3)#define nRF24L01_MOSI_1 (P5OUT|= BIT1)#define nRF24L01_MOSI_0 (P5OUT&=~BIT1)//SPI Commands#define nRF24L01_R_REGISTER    0x00#define nRF24L01_W_REGISTER    0x20#define nRF24L01_R_RX_PAYLOAD  0x61#define nRF24L01_W_TX_PAYLOAD  0xA0#define nRF24L01_FLUSH_TX      0xE1#define nRF24L01_FLUSH_RX      0xE2#define nRF24L01_REUSE_TX_PL   0xE3#define nRF24L01_NOP           0xFF//NRF24L01寄存器地址#define nRF24L01_CONFIG        0x00#define nRF24L01_EN_AA         0x01#define nRF24L01_EN_RXADDR     0x02#define nRF24L01_SETUP_AW      0x03#define nRF24L01_SETUP_RETR    0x04#define nRF24L01_RF_CH         0x05#define nRF24L01_RF_SETUP      0x06#define nRF24L01_STATUS        0x07#define nRF24L01_OBSERVE_TX    0x08#define nRF24L01_CD            0x09#define nRF24L01_RX_ADDR_P0    0x0A#define nRF24L01_RX_ADDR_P1    0x0B#define nRF24L01_RX_ADDR_P2    0x0C#define nRF24L01_RX_ADDR_P3    0x0D#define nRF24L01_RX_ADDR_P4    0x0E#define nRF24L01_RX_ADDR_P5    0x0F#define nRF24L01_TX_ADDR       0x10#define nRF24L01_RX_PW_P0      0x11#define nRF24L01_RX_PW_P1      0x12#define nRF24L01_RX_PW_P2      0x13#define nRF24L01_RX_PW_P3      0x14#define nRF24L01_RX_PW_P4      0x15#define nRF24L01_RX_PW_P5      0x16#define nRF24L01_FIFO_STATUS   0x17void IO_Init(void)   //初始化端口{P2SEL = 0;P3SEL = 0;P4SEL = 0;P4DIR|=0x0f;              //P4.0,1,2,3=OUTP4OUT|=0x0f;P2DIR=0xfd;              //P2.1=in    qita=OUTP3DIR&=0xf7;              //p3.3=in}void Init_Port1(void)   //P1.0、P1.1为中断，下降沿触发{  P1SEL=0;                         //设置为普通I/O口功能P1DIR=0;                         //设置为输入方向P1IE=0;P1IES=0;                          P1IE|=BIT2;                           //打开中断允许P1IES|=BIT2;                          //下降沿触发P1IFG=0;                              //P1IES的切换可能使P1IFG置位，需清除}/*******************************************************************************///无线通信void Init_nRF24L01_IO(){nRF24L01_CE_0;nRF24L01_CSN_1;nRF24L01_SCK_0;nRF24L01_MOSI_0;}//NRF24L01的SPI写时序void nRF24L01SpiWrite(unsigned char byte){unsigned char i;nRF24L01_SCK_0;Delayus(1);for (i=0;i<8;i++) // Setup byte circulation bits{if ((byte&BIT7)==BIT7) // Put DATA_BUF.7 on data linenRF24L01_MOSI_1; //MOSI=1;elsenRF24L01_MOSI_0; //MOSI=0;nRF24L01_SCK_1; // Set clock line highDelayus(2);byte=byte<1;nRF24L01_SCK_0; // Set clock line lowDelayus(2);}Delayus(1);}//NRF24L01的SPI读时序unsigned char nRF24L01SpiRead(void){unsigned char i;unsigned char temp=0;nRF24L01_SCK_0;Delayus(2);for (i=0;i<8;i++) // Setup byte circulation bits{nRF24L01_SCK_1; // Set clock line highDelayus(2);temp=temp<1; // Right shift DATA_BUFif ((P5IN&BIT2==BIT2)){temp|=1;} // Read datanRF24L01_SCK_0; // Set clock line lowDelayus(2);}Delayus(2);return temp;}//void nRF24L01_Flush_TX_FIFO(void)//Clear TX FIFO{nRF24L01_CSN_1;nRF24L01_CSN_0;nRF24L01SpiWrite(nRF24L01_FLUSH_TX);nRF24L01_CSN_1;}//void nRF24L01_Flush_RX_FIFO(void)//Clear RX FIFO{nRF24L01_CSN_1;nRF24L01_CSN_0;nRF24L01SpiWrite(nRF24L01_FLUSH_RX);nRF24L01_CSN_1;}//void nRF24L01SpiWriteReg(unsigned char SpiCommand,unsigned char Content){nRF24L01_CSN_1;nRF24L01_CSN_0;nRF24L01SpiWrite(SpiCommand);nRF24L01SpiWrite(Content);nRF24L01_CSN_1;}//void nRF24L01_Set_Rx_Address(unsigned char RX_Address_Pipex,unsigned char *Address,unsigned char Length)//Local//Address{unsigned char i=0;nRF24L01_CSN_1;nRF24L01_CSN_0;nRF24L01SpiWrite(RX_Address_Pipex);for(i=0;i>12;hexdisp(f1);f1=(f2&0x0f00)>>8;hexdisp(f1);f1=(f2&0xf0)>>4;hexdisp(f1);f1=f2&0x0f;hexdisp(f1);}void liney(uchar x,uchar y,uchar l)  //在（x，y）向下开始显示长度为l(<=16)的竖线{uchar l1,i;uint x1=0x00,x2=0x00,ix=x/16;l1=x-ix*16;if (l1<8){x1=0x80>>l1;}else{x2=0x80>>(l1-8);}for (i=0;i>(l1+l2);x1=x1>l1;x2=0xff>(l2+l1-8);x2=x2>l1;x2=0xff;}else{l2=l1-8;x1=0x00;x2=0xff>>l2;}if(l+l1<=24){l2=24-l-l1;x3=0xff0;k--){c^=a&0x0001;   //奇偶校验a=a>>1;}buffer=buffer|c;return buffer;}/******************************************************************///收发void send_bit1(){send_1;Delayus(500);send_0;Delayus(500);}void send_bit0(){send_0;Delayus(1000);}void send_data(){int k;ulong buffer2;buffer2=convert();//     send_bit1();//  Delayus(500);  //  send_bit1();for(k=16;k>0;k--)//发送数据位{if(buffer2&0x01==0x01)send_bit1();elsesend_bit0();buffer2=buffer2>>1;}}void send_adrs(uint z){ int k;uint buffer1=z;for(k=16;k>0;k--)//发送地址位{if(buffer1&0x01==0x01)send_bit1();elsesend_bit0();buffer1=buffer1>>1;}}uint recieve_adrs(){int k,a;uint buffer1=0x0000,b=0x0000;Delayus(250);for(k=32;k>0;k--){alldata[k]=P2IN&0x02;Delayus(1000);}for(k=32;k>16;k--){a=alldata[k];a=a>>1;b=b|a;b=b<15;buffer1=buffer1>>1;buffer1=buffer1|b;}return buffer1;}ulong recieve_data(){int k,a;ulong buffer2=0x0000,b=0x0000;for(k=16;k>0;k--){a=alldata[k];a=a>>1;b=b|a;b=b<15;buffer2=buffer2>>1;buffer2=buffer2|b;}return buffer2;}/*************************************************************************///显示数据void print_tmp(){ulong TEMP=0;int TEMPFLG=0;char TEMP1,TEMP2,TEMP3,TEMP4;TEMP = recieve_data()&0xfff8;if(TEMP>0x8000){TEMP=TEMP>>3;TEMP=TEMP<3;TEMP=0xffff-TEMP+1;TEMPFLG=1;}TEMP = TEMP*10;TEMP = TEMP/128;//    if( TEMP>35)//P1OUT &= ~BIT1;//    Delayus_ms(700);TEMP1=char11[TEMP/1000];TEMP2=char11[TEMP%1000/100];TEMP3=char11[TEMP%100/10];TEMP4=char11[TEMP%10];if(TEMP1==0){ if(TEMP2==0){if(TEMPFLG==1)writechar(0x90,-);writechar(0x91,TEMP3);writechar(0x92,.);writechar(0x93,TEMP4);}else{if(TEMPFLG==1)writechar(0x90,-);writechar(0x91,TEMP2);writechar(0x92,TEMP3);writechar(0x93,.);writechar(0x94,TEMP4);}}else{if(TEMPFLG==1)writechar(0x90,-);writechar(0x91,TEMP1);writechar(0x92,TEMP2);writechar(0x93,TEMP3);writechar(0x94,.);writechar(0x95,TEMP4);}}void print_light(){ulong lgt;lgt=recieve_data()&0x0004;lgt=lgt>>2;if(lgt)writechinese(0x98,"暗");elsewritechinese(0x98,"亮");}void print_data(){uchar num;num=char11[Tx_Payload[0]];writechar(0x90,num);num=char11[Tx_Payload[1]];writechar(0x91,num);num=char11[Tx_Payload[2]];writechar(0x92,num);}/********************************************************************************///键盘void key_Init(){P5SEL = 0;P6SEL = 0;P6DIR|=0xff;              //P6=OUTP5DIR=0x8b;              //P5.2、4、5、6=in,P5.0、1、3、7=out}void key_read(){//第一排扫描P6OUT=0x18;Delayus(100);key0=P5IN&0x70 ;if (key0==0x30){key11=1;if(keyflg==0){CLEAR();writechinese(0x80,"单独探测节点");writechinese(0x90,"1-选择1#节点");writechinese(0x88,"2-选择2#节点");writechinese(0x98,"g-返回主菜单");keyflg=1;}else if(keyflg==1){CLEAR();writechinese(0x80,"寻检1#节点");writechinese(0x90,"d-确认，g-返回");keyflg=2;}Delayus(30000);}if (key0==0x40){key11=2;if(keyflg==0){CLEAR();writechinese(0x80,"轮寻模式");writechinese(0x90,"d-确认，g-返回");keyflg=4;}if(keyflg==1){CLEAR();writechinese(0x80,"寻检2#节点");writechinese(0x90,"d-确认，g-返回");keyflg=3;}Delayus(30000);}if (key0==0x50){key11=3;Delayus(30000);}if (key0==0x60){Delayus(30000);key11=4;}//第二排扫描P6OUT=0x20;Delayus(100);key0=P5IN&0x70 ;if (key0==0x30){key11=5;CLEAR();nRF24L01_TX_MODE();nRF24L01_Set_Rx_Address(nRF24L01_W_REGISTER+nRF24L01_RX_ADDR_P0,Tx_Address,5);writechinese(0x80,"正在发送");nRF24L01_Flush_TX_FIFO();nRF24L01_Set_Tx_Address(nRF24L01_W_REGISTER+nRF24L01_TX_ADDR,Tx_Address,5);// 指定接收方的地址nRF24L01_Write_Tx_Payload(Tx_Payload,3);//把1 字节数据放入FIFOnRF24L01_Transmit_Data();//启动发送，发送完成后进入Standby-I 模式print_data();Delayus(30000);}if (key0==0x40){key11=6;Delayus(30000);}if (key0==0x50){key11=7;Delayus(30000);}if (key0==0x60){key11=8;Delayus(30000);}//第三排扫描P6OUT=0x28;Delayus(100);key0=P5IN&0x70 ;if (key0==0x30){key11=9;Delayus(30000);}if (key0==0x40){key11=A;Delayus(30000);}if (key0==0x50){key11=B;Delayus(30000);}if (key0==0x60){key11=C;Delayus(30000);}//第四排扫描P6OUT=0x30;Delayus(100);key0=P5IN&0x70 ;if (key0==0x30){key11=D;if(keyflg==2){CLEAR();writechinese(0x80,"发送1#节点请求");send_bit1();send_adrs(0x0001);_EINT();//发送1号节点请求}if(keyflg==3){CLEAR();writechinese(0x80,"发送2#节点请求");send_bit1();send_adrs(0x0002);_EINT();//发送2号节点请求}if(keyflg==4){CLEAR();writechinese(0x80,"发送1#节点请求");send_bit1();send_adrs(0x0001);keyflg=2;Delayus(20000);writechinese(0x80,"发送2#节点请求");send_bit1();send_adrs(0x0002);keyflg=3;_EINT();}Delayus(30000);}if (key0==0x40){key11=E;Delayus(30000);}if (key0==0x50){key11=F;Delayus(30000);}if (key0==0x60){key11=G;CLEAR();writechinese(0x80,"江南大学");writechinese(0x90,"通信与控制工程");writechinese(0x88,"无线监测模拟装置");Delayus(100000);CLEAR();writechinese(0x80,"选择接受模式");writechinese(0x90,"1-单独探测节点");writechinese(0x88,"2-轮巡模式");keyflg=0;Delayus(30000);Init_nRF24L01_IO();}}void print1(ulong x){ulong cvt0,cvt1;  int k,i;char data[10];cvt0=x;for(k=4,i=0;k>0;k--,i++){cvt1=cvt0&0x000f;data[i]=char11[cvt1%16];cvt0=cvt0>>4;}writechar(0x90,data[3]);writechar(0x91,data[2]);writechar(0x92,data[1]);writechar(0x93,data[0]);}void main(void){WDTCTL=WDTPW+WDTHOLD;_DINT();Init_Port1();IO_Init();LCD_Init();CLEAR();key11=M;// LCDL=安;//汉字显示示例writechinese(0x80,"江南大学");writechinese(0x90,"通信与控制工程");writechinese(0x88,"无线监测模拟装置");Delayus(100000);CLEAR();writechinese(0x80,"选择接受模式");writechinese(0x90,"1-单独探测节点");writechinese(0x88,"2-轮巡模式");keyflg=0;bostart=0x00;boflg=0x00;key_Init();Init_nRF24L01_IO();_EINT();do{key11=w ;key_read();}while(1);}#pragma vector=PORT1_VECTOR__interrupt void P1_ISR(void){_DINT();P1IFG=0;P1IE=0;P1IES=0;Delayus(500);writechinese(0x88,"发送成功");IO_Init();Init_Port1();_EINT();}