NRF24l01多信道问题

为什么我把原来的SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01);改为SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x3F);后 只能发送不能接收了？还有就是接收数据是不是不区别哪个信道？

#include <reg52.h>
#include <intrins.h>

typedef unsigned char uchar;
typedef unsigned char uint;
/
void inerDelay_us(unsigned char n)
{
for(;n>0;n--)
_nop_();
}
/
void init_NRF24L01(void)
{
inerDelay_us(100);
CE=0; // chip enable
CSN=1; // Spi disable
SCK=0; //
SPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH); // 写本地地址
SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, RX_ADDRESS, RX_ADR_WIDTH); // 写接收端地址
SPI_RW_Reg(WRITE_REG + EN_AA, 0x01); // 频道0自动 ACK应答允许
SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01); // 允许接收地址只有频道0，如果需要多频道可以参考Page21
SPI_RW_Reg(WRITE_REG + RF_CH, 0); // 设置信道工作为2.4GHZ，收发必须一致
SPI_RW_Reg(WRITE_REG + RX_PW_P0, RX_PLOAD_WIDTH); //设置接收数据长度，本次设置为32字节
SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07); //设置发射速率为1MHZ，发射功率为最大值0dB
}

uint SPI_RW(uint uchar)
{
uint bit_ctr;
for(bit_ctr=0;bit_ctr<8;bit_ctr++) // output 8-bit
{
MOSI = (uchar & 0x80); // output 'uchar', MSB to MOSI
uchar = (uchar << 1); // shift next bit into MSB..
SCK = 1; // Set SCK high..
uchar |= MISO; // capture current MISO bit
SCK = 0; // ..then set SCK low again
}
return(uchar); // return read uchar
}

uchar SPI_Read(uchar reg)
{
uchar reg_val;

CSN = 0; // CSN low, initialize SPI communication...
SPI_RW(reg); // Select register to read from..
reg_val = SPI_RW(0); // ..then read registervalue
CSN = 1; // CSN high, terminate SPI communication

return(reg_val); // return register value
}


uint SPI_RW_Reg(uchar reg, uchar value)
{
uint status;

CSN = 0; // CSN low, init SPI transaction
status = SPI_RW(reg); // select register
SPI_RW(value); // ..and write value to it..
CSN = 1; // CSN high again

return(status); // return nRF24L01 status uchar
}


uint SPI_Read_Buf(uchar reg, uchar *pBuf, uchar uchars)
{
uint status,uchar_ctr;

CSN = 0; // Set CSN low, init SPI tranaction
status = SPI_RW(reg); // Select register to write to and read status uchar

for(uchar_ctr=0;uchar_ctr<uchars;uchar_ctr++)
pBuf[uchar_ctr] = SPI_RW(0); //

CSN = 1;

return(status); // return nRF24L01 status uchar
}

uint SPI_Write_Buf(uchar reg, uchar *pBuf, uchar uchars)
{
uint status,uchar_ctr;

CSN = 0; //SPI使能
status = SPI_RW(reg);
for(uchar_ctr=0; uchar_ctr<uchars; uchar_ctr++) //
SPI_RW(*pBuf++);
CSN = 1; //关闭SPI
return(status); //
}


void SetRX_Mode(void)
{
CE=0;
SPI_RW_Reg(WRITE_REG + CONFIG, 0x0f); // IRQ收发完成中断响应，16位CRC ，主接收
CE = 1;
inerDelay_us(130);
}


unsigned char nRF24L01_RxPacket(unsigned char* rx_buf)
{
unsigned char revale=0;
sta=SPI_Read(STATUS); // 读取状态寄存其来判断数据接收状况
if(RX_DR) // 判断是否接收到数据
{
CE = 0; //SPI使能
SPI_Read_Buf(RD_RX_PLOAD,rx_buf,TX_PLOAD_WIDTH);// read receive payload from RX_FIFO buffer
revale =1; //读取数据完成标志
}
SPI_RW_Reg(WRITE_REG+STATUS,sta); //接收到数据后RX_DR,TX_DS,MAX_PT都置高为1，通过写1来清楚中断标志
return revale;
}

void nRF24L01_TxPacket(unsigned char * tx_buf)
{
CE=0; //StandBy I模式
SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH); // 装载接收端地址
SPI_Write_Buf(WR_TX_PLOAD, tx_buf, TX_PLOAD_WIDTH); // 装载数据
SPI_RW_Reg(WRITE_REG + CONFIG, 0x0e); // IRQ收发完成中断响应，16位CRC，主发送
CE=1; //置高CE，激发数据发送
inerDelay_us(10);
}
//************************************主函数************************************************************
void main(void)
{
unsigned char tf =0;
unsigned char TxBuf[20]=; //
unsigned char RxBuf[20]=;
init_NRF24L01() ;
led1=1;led2=1;
P0=0x00;
TxBuf[1] = 1 ;
TxBuf[2] = 1 ;
nRF24L01_TxPacket(TxBuf); // Transmit Tx buffer data
Delay(6000);
P0=0xBF;
while(1)
{
if(KEY1 ==0 )
{
TxBuf[1] = 1 ;
tf = 1 ;
led1=0;
Delay(120);
led1=1;
Delay(120);
}
if(KEY2 ==0 )
{
TxBuf[2] =1 ;
tf = 1 ;
led2=0;
Delay(120);
led2=1;
Delay(120);
}
if (tf==1)
{
nRF24L01_TxPacket(TxBuf); // Transmit Tx buffer data
TxBuf[1] = 0x00;
TxBuf[2] = 0x00;
tf=0;
Delay(1000);
}
SetRX_Mode();
RxBuf[1] = 0x00;
RxBuf[2] = 0x00;
Delay(1000);
nRF24L01_RxPacket(RxBuf);
if(RxBuf[1]|RxBuf[2])
{
if( RxBuf[1]==1)
{
led1=0;
}
if( RxBuf[2]==1)
{
led2=0;
}
Delay(6000); //old is '1000'
}

RxBuf[1] = 0x00;
RxBuf[2] = 0x00;
led1=1;
led2=1;
}

}