Esempio n. 1
0
void nrf_init(char *address, int address_size) {
  	P2DIR |= NRF_CE;
  	P2OUT |= NRF_CE;
	//auto ack pipe 0
	nrf_write(NRF_EN_AA, EN_AA);
	//pipe 0 only
	nrf_write(NRF_EN_RXADDR, EN_RXADDR);
	//set channel
	nrf_set_channel();
	//setup RF
	nrf_write(NRF_RF_SETUP,RF_SETUP);
	set_address(address,address_size);
}
Esempio n. 2
0
unsigned char NRF24L01_RxPacket(unsigned char *rxbuf)
{
	unsigned char sta;		    							   
	//SPIx_SetSpeed(SPI_SPEED_8); //spi速度为9Mhz(24L01的最大SPI时钟为10Mhz)   
	sta=nrf_read(STATUS);  //读取状态寄存器的值    	 
	nrf_write(W_REGISTER+STATUS,sta); //清除TX_DS或MAX_RT中断标志
	if(sta&0x40)//接收到数据
	{
		NRF24L01_Read_Buf(0x61,rxbuf,TX_DATA_WITDH);//读取数据
		nrf_write(FLUSH_RX,0xff);//清除RX FIFO寄存器 
		return 0; 
	}	   
	return 1;//没收到任何数据
}
Esempio n. 3
0
unsigned char NRF24L01_TxPacket(unsigned char *txbuf)
{
	unsigned char sta;
	DrvGPIO_ClrBit(E_GPB, 1);	
  nrf_writebuf(W_TX_PAYLOAD,txbuf,TX_DATA_WITDH);//写数据到TX BUF  32个字节
 	DrvGPIO_SetBit(E_GPB,1);	// This device is now ready to receive one packet of 16 bytes payload from a TX device
	while(DrvGPIO_GetBit(E_GPB, 2)!=0);//等待发送完成
	sta=nrf_read(STATUS);  //读取状态寄存器的值	   
	nrf_write(W_REGISTER+STATUS,sta); //清除TX_DS或MAX_RT中断标志
	if(sta&0x10)//达到最大重发次数
	{
		nrf_wf(FLUSH_TX);//清除TX FIFO寄存器 
			nrf_write(W_REGISTER+STATUS,sta); //清除TX_DS或MAX_RT中断标志	
		sta=nrf_read(STATUS);  //读取状态寄存器的值	   
	
		return 0x10; 
	}
	if(sta&0x20)//发送完成
	{
		return 0x20;
	}
	return 0xff;//其他原因发送失败
}
Esempio n. 4
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void RX_Mode(void)
{     
	DrvGPIO_ClrBit(E_GPB, 0x01);	
	nrf_writebuf(W_REGISTER+TX_ADDR,(uchar*)TxAddr,5);//写TX节点地址 
	nrf_writebuf(W_REGISTER+RX_ADDR_P0,(uchar*)RxAddr,5); //设置TX节点地址,主要为了使能ACK  
	
	nrf_write(W_REGISTER + EN_AA, 0x01); // Enable Auto.Ack:Pipe0
	nrf_write(W_REGISTER + EN_RXADDR, 0x01); // Enable Pipe0
	nrf_write(W_REGISTER + RF_CH, 40); // Select RF channel 40
	nrf_write(W_REGISTER + RX_PW_P0, 4);
	nrf_write(W_REGISTER + RF_SETUP, 0x0f);
	nrf_write(W_REGISTER + CONFIG, 0x0f); // Set PWR_UP bit, enable CRC(2 bytes)
	DrvGPIO_SetBit(E_GPB,1);	// This device is now ready to receive one packet of 16 bytes payload from a TX device
// '3443101001', with auto acknowledgment, retransmit count of 10, RF channel 40 and
}
Esempio n. 5
0
/*****************NRF????????????******************************/
void NRFSetTxMode(uchar *TxDate)
{//????		 
		char ret;
		DrvGPIO_ClrBit(E_GPB, 1);	
  	nrf_writebuf(W_REGISTER+TX_ADDR,(uchar*)TxAddr,5);//写TX节点地址 
  	nrf_writebuf(W_REGISTER+RX_ADDR_P0,(uchar*)TxAddr,5); //设置TX节点地址,主要为了使能ACK
		ret=nrf_read(STATUS);
		delay_s();
  	nrf_write(W_REGISTER+STATUS,0x10);     //使能通道0的自动应答    
		ret=nrf_read(STATUS);
	
  	nrf_write(W_REGISTER+EN_AA,0x01);     //使能通道0的自动应答    
  	nrf_write(W_REGISTER+EN_RXADDR,0x01); //使能通道0的接收地址  
  	nrf_write(W_REGISTER+SETUP_RETR,0x1a);//设置自动重发间隔时间:500us + 86us;最大自动重发次数:10次
  	nrf_write(W_REGISTER+RF_CH,40);       //设置RF通道为40
  	nrf_write(W_REGISTER+RF_SETUP,0x0f);  //设置TX发射参数,0db增益,2Mbps,低噪声增益开启   
  	nrf_write(W_REGISTER+CONFIG,0x0e);    //配置基本工作模式的参数;PWR_UP,EN_CRC,16BIT_CRC,接收模式,开启所有中断
		DrvGPIO_SetBit(E_GPB,1);	// This device is now ready to receive one packet of 16 bytes payload from a TX device  
}		  
Esempio n. 6
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void radio_off(void) {
	char tmp = nrf_read(NRF_CONFIG);
	nrf_write(NRF_CONFIG, tmp&(~NRF_CONFIG_RADIO&0xff));
}
Esempio n. 7
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void radio_on(void) {
	char tmp = nrf_read(NRF_CONFIG);
	nrf_write(NRF_CONFIG, tmp|NRF_CONFIG_RADIO);
	//wait a little for radio to power up
	__delay_cycles(2000);
}
Esempio n. 8
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void nrf_init_radio(void) {
    nrf_write(NRF_SETUP_RETR, SETUP_RETR); //no auto retransmit
	nrf_write(NRF_CONFIG, CONFIG);
    radio_off();
}
Esempio n. 9
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void nrf_set_channel(void) {
	nrf_write(NRF_RF_CH, CHANNEL);
}
Esempio n. 10
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void nrf_set_config(char config) {
	nrf_write(NRF_CONFIG, config);
}