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- 2013-8-27
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发表于 2013-8-28 11:00:43
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<img src="data:image/png;base64,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" alt="" /><br />
<br />
发送端main函数：<br />
TX_Mode();<br />
while(1)<br />
{<br />
for(ni=0; ni<3; ni++)<br />
{<br />
nRF24L01_TxPacket(nrf_buf + 4*ni);<br />
while(1)<br />
{<br />
status = SPI_Read(STATUS);<br />
if(TX_DS & status) //如果发送成功则清掉标志位，出去执行另外的发送<br />
{ <br />
SPI_RW_Reg(NRF_WRITE_REG+STATUS,0XFF);<br />
SPI_RW(FLUSH_TX);<br />
LED2_CROSS;<br />
break;<br />
}<br />
if(MAX_RT & status) //如果达到最大重传，则说明发送失败了，清掉寄存器，因为发送失败，发送缓冲区的东西还在里面 //需要手动清掉，本次发送失败，下次继续<br />
{<br />
SPI_RW_Reg(NRF_WRITE_REG+STATUS,0XFF);<br />
SPI_RW(FLUSH_TX); <br />
LED3_CROSS;<br />
break;<br />
}<br />
Delay_Us(100);<br />
}<br />
Delay_Ms(500);<br />
}<br />
<br />
<br />
接受main函数：<br />
RX_Mode();<br />
while(1)<br />
{<br />
status = nRF24L01_RxPacket(nrf_buf1); <br />
if(status)<br />
{<br />
LED2_CROSS;<br />
Show_Nrf(20, 80);<br />
memset(nrf_buf1, 0, 4); <br />
}<br />
<br />
LED1_CROSS;<br />
Delay_Ms(500);<br />
}<br />
<br />
<br />
发送函数：<br />
/****************发送函数***************************/<br />
void nRF24L01_TxPacket(unsigned char *tx_buf)<br />
{<br />
CE_Low; // CE=0;<br />
delay1us(10);<br />
SPI_RW_Reg(NRF_WRITE_REG+STATUS,0XFF);<br />
// SPI_Read(STATUS);<br />
<br />
//SPI_Write_Buf(NRF_WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH); // WritesTX_Address to nRF24L01<br />
SPI_Write_Buf(NRF_WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH); //RX_Addr0 same as TX_Adr for Auto.Ack<br />
SPI_Write_Buf(WR_TX_PLOAD, tx_buf, TX_PLOAD_WIDTH); // Writes data to TX payload<br />
SPI_RW_Reg(NRF_WRITE_REG + CONFIG, 0x0e); // Set PWR_UP bit, enable CRC(2 bytes) & rim:TX. MAX_RT & TX_DS enabled..<br />
SPI_Read(CONFIG);<br />
<br />
CE_High; //CE=1启动发送<br />
delay1us(10);<br />
<br />
} <br />
<br />
<br />
接收函数：<br />
/*接收函数，返回1表示有数据收到，否则没有数据接收到**/<br />
unsigned char nRF24L01_RxPacket(unsigned char *rx_buf)<br />
{<br />
unsigned char sta,revale=0; <br />
SPI_RW_Reg(NRF_WRITE_REG + CONFIG, 0x0f); <br />
SPI_Read(CONFIG);<br />
<br />
sta = SPI_Read(STATUS); // read register STATUS's value<br />
if(sta&0x40) //if(RX_DS) // if receive data ready (RX_DR) interrupt<br />
{<br />
CE_Low; // stand by mode<br />
SPI_Read_Buf(RD_RX_PLOAD, rx_buf, WR_TX_PLOAD); // read receive payload from RX_FIFO buffer<br />
revale = 1;<br />
<br />
CSN_Low;<br />
SPI_RW(FLUSH_RX);<br />
CSN_High;<br />
}<br />
SPI_RW_Reg(NRF_WRITE_REG+STATUS,sta); // clear RX_DR or TX_DS or MAX_RT interrupt flag<br />
<br />
sta = SPI_Read(FIFO_STATUS); // read register STATUS's value<br />
<br />
return revale;<br />
<br />
}<br />
<br />
<br />
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发表于 2013-8-27 12:47:16
ipe0<br />
发表于 2013-8-27 15:14:41
