我一直在用串口给nrf24l01发送数据进行通信还是不行求助
这几天，我在用ATmage16的串口给NRF12l01发数据和另一款单片机通信，但是不行，请大神帮忙。#include "iom16v.h"
#include "macros.h"
#include "NRF24L01.h"
#include "AVR_HJ-2G.h"
#define uint unsigned int
#define uchar unsigned char
#define TX_ADR_WIDTH 5 // 5 bytes TX(RX) address width
#define TX_PLOAD_WIDTH20// 16 bytes TX payload
uchar TX_ADDRESS={0x34,0x43,0x10,0x10,0x01}; // Define a static TX address;
uchar rx_buf;
uchar tx_buf={0X02,0X02,0X03,0X05,0X09};
//**************//UART//**********************************
//波特率，晶振
#define BAUD 19200
#define FXTAL 12000000
//串口接收完毕中断触发声明
#pragma interrupt_handler USART_Received_Ir:12
#pragma interrupt_handler Increase_INT0_Ir:2
//中断初始化函数，在使用IRQ时认为的在pd2上加一个低电平
void Interrupt_Init(void)
{
MCUCR&=0xF0; //INT0,低电平触发
GICR|=BIT(6); //GICR|=0xC0; INT0中断允许位为1
GIFR|=BIT(6); //GIFR|=0xC0; INTO清中断标志位
SREG|=BIT(7); //全局中断使能位置一
}
/**************************************************/
//变量定义:接收缓冲变量，接收标志位
unsigned char RX_Buffer=0x00,RX_Flag=0;
//串口IO初始化函数
void USART_IO_Init(void)
{
DDRD|=BIT(PD1); //PD1:TX为输出状态
}
//串口初始化函数
void USART_Init(void)
{
unsigned int Temp;
USART_IO_Init(); //串口IO初始化函数调用
UCSRA=0x00; //串口控制器A清零
UCSRB=0x00; //串口控制器B清零
UCSRC|=BIT(URSEL)|BIT(UCSZ1)|BIT(UCSZ0); //选择USCRC，异步操作，禁止检验危,1个停止位,八位数据
Temp=(FXTAL/BAUD/16)-1; //求出19200波特率的赋值
UBRRH=((Temp>>8)&0x00ff); //波特率寄存器高八位赋值
UBRRL=(Temp&0x00ff); //波特率寄存器低八位赋值
//UBRR=71; //从手册中直接取得赋值，9600kbps
UCSRB|=BIT(TXEN)|BIT(RXEN)|BIT(RXCIE); //发送使能，接收使能，接收完毕中断使能
SREG|=BIT(7); //全局中断使能
}
//串口发送函数
void USART_Send(unsigned char Data)
{
while(!(UCSRA&(BIT(UDRE)))); //数据寄存器UDR是否为空？
UDR=Data; //UDR赋值
while(!(UCSRA&(BIT(TXC)))); //数据是否已经发送完毕？
UCSRA|=BIT(TXC); //清除发送完毕标志位
}
//串口接收完毕中断函数
void USART_Received_Ir(void)
{
UCSRB&=~BIT(RXCIE); //接收完毕中断不使能
RX_Buffer=UDR; //读取UDR的数据
RX_Flag=1; //接收标志位置一
UCSRB|=BIT(RXCIE); //接收完毕中断使能
}
//********************************************************************************
//NRF24L01和SPI
//******************************************************************************
void SPI_init(void)
{
DDR_SPI = (1<<DD_MOSI)|(1<<DD_SCK)|(1<<DD_CSN)|(1 << PB3); //设置 MOSI,SCK,SS.CE为 OUTPUT,其它为 INPUT
SPCR=(1<<SPE)|(1<<MSTR)|(1<<SPR0); //使能 SPI 接口,主机模式,MSB 低位在前,模式0,16分频,SPI 时钟1MHZ
SPSR=0;
}
uchar SPI_RW(uchar date)
{
SPDR=date;
while(!(SPSR&(1<<SPIF)));
return SPDR;
}
uchar SPI_Read(uchar reg)
{
uchar reg_val;
nRF24L01_CSNL; // CSN low, initialize SPI communication...
SPI_RW(reg); // Select register to read from..
reg_val = SPI_RW(0); // ..then read registervalue
nRF24L01_CSNH; // CSN high, terminate SPI communication
return(reg_val); // return register value
}
uchar SPI_RW_Reg(uchar reg, uchar value)
{
uchar status;
nRF24L01_CSNL; // CSN low, init SPI transaction
status = SPI_RW(reg); // select register
SPI_RW(value); // ..and write value to it..
nRF24L01_CSNH; // CSN high again
return(status); // return nRF24L01 status uchar
}
uchar SPI_Read_Buf(uchar reg, uchar *pBuf, uchar bites)
{
uint status1,uchar_ctr;
nRF24L01_CSNL; // Set CSN low, init SPI tranaction
status1 = SPI_RW(reg); // Select register to write to and read status uchar
for(uchar_ctr=0;uchar_ctr<bites;uchar_ctr++)
pBuf = SPI_RW(0); //
nRF24L01_CSNH;
return(status1); // return nRF24L01 status uchar
}
uchar SPI_Write_Buf(uchar reg, uchar *pBuf, uchar bites)
{
uchar status1,uchar_ctr;
nRF24L01_CSNL; //SPI 使能
status1 = SPI_RW(reg);
for(uchar_ctr=0; uchar_ctr<bites; uchar_ctr++) //
SPI_RW(*pBuf++);
nRF24L01_CSNH; //关闭 SPI
return(status1); //
}
void RX_Mode(void)
{
nRF24L01_CEL;
SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH);
SPI_RW_Reg(WRITE_REG + EN_AA, 0x01); // Enable Auto.Ack:Pipe0
SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01); // Enable Pipe0
SPI_RW_Reg(WRITE_REG + RF_CH, 40); // Select RF channel 40
SPI_RW_Reg(WRITE_REG + RX_PW_P0, TX_PLOAD_WIDTH);
SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07);
SPI_RW_Reg(WRITE_REG + CONFIG, 0x0f); // Set PWR_UP bit,enable CRC(2 bytes)& Prim:RX. RX_DR enabled..
nRF24L01_CEH;
Delayms(20);
}
void TX_Mode(void)
{
nRF24L01_CEL;
SPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH);
SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH);
SPI_Write_Buf(WR_TX_PLOAD, tx_buf, TX_PLOAD_WIDTH); // Writes data to TX payload
SPI_RW_Reg(WRITE_REG + EN_AA, 0x01); // Enable Auto.Ack:Pipe0
SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01); // Enable Pipe0
SPI_RW_Reg(WRITE_REG + SETUP_RETR, 0x1a); // 500us + 86us, 10 retrans...
SPI_RW_Reg(WRITE_REG + RF_CH, 40); // Select RF channel 40
SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07); // TX_PWR:0dBm, Datarate:2Mbps, LNA:HCURR
SPI_RW_Reg(WRITE_REG + CONFIG, 0x0e); // Set PWR_UP bit,enable CRC(2 bytes)& Prim:TX. MAX_RT & TX_DS enabled..
nRF24L01_CEH;
Delayms(20);
}
void NRF24l01INIT(void)
{
SPI_init();
nRF24L01_CEL; // 芯片使能
nRF24L01_CSNH; // 禁止SPI
nRF24L01_SCKL; // 初始化SPI时钟线为高
}
void SPI_CLR_Reg(uchar R_T)
{
nRF24L01_CSNL;
if(R_T==1) // CSN low, init SPI transaction
SPI_RW(FLUSH_TX); // ..and write value to it..
else
SPI_RW(FLUSH_RX); // ..and write value to it..
nRF24L01_CSNH; // CSN high again
}
void NRF_CLERN_ALL(void)
{
SPI_CLR_Reg(0);
SPI_CLR_Reg(1);
SPI_RW_Reg(WRITE_REG+STATUS,0xff);
nRF24L01_IRQH;
}
//******************************************************************************************/
void Increase_INT0_Ir(void)
{
GIFR|=BIT(6); //GIFR|=0xC0; INTO清中断标志位
}
void main(void)
{
uint lock_key=0;
uchar sta;
USART_Init();
NRF24l01INIT();
Interrupt_Init();
DDRA=0xff;
PORTA=0xfb;
DDRB=0xff;
PORTB=0XFF;
while(1)
{
if(RX_Flag)
{
RX_Flag=0;
PORTB=0xfe;
Delayms(100);
PORTB=0xff;
Delayms(100);
tx_buf=RX_Buffer;
}//如果串口接受大数据则点亮一个LED灯
nRF24L01_IRQH;
SPI_RW_Reg(WRITE_REG+STATUS,0xff);
TX_Mode();
Delayms(10);
while(nRF24L01_IRQ);
sta=SPI_Read(STATUS);
SPI_RW_Reg(WRITE_REG+STATUS,sta);
if(sta&TX_DS)
{
PORTB=0XFD;
Delayms(100);
PORTB=0XFF;
Delayms(100);//如果有数据从nrf24l01发送则点亮一个LED灯
}
else
{
NRF_CLERN_ALL();
}
lock_key=1;
} //发送
if(lock_key)
{
lock_key=0;
RX_Mode();
nRF24L01_IRQH;
while(nRF24L01_IRQ==0);
Delayus(400);
}
nRF24L01_IRQH;
if(nRF24L01_IRQ==0)
{
sta=SPI_Read(STATUS);
SPI_RW_Reg(WRITE_REG+STATUS,sta);
if(sta&RX_DR)
{
SPI_Read_Buf(RD_RX_PLOAD,rx_buf,TX_PLOAD_WIDTH);
USART_Send(*rx_buf);
}
else
{
NRF_CLERN_ALL();
RX_Mode();
nRF24L01_IRQH;
while(nRF24L01_IRQ==0);
}
}
}
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