高级会员
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- 金钱
- 800
- 注册时间
- 2011-11-18
- 在线时间
- 5 小时
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<span style="widows:2;text-transform:none;text-indent:0px;display:inline !important;font:18px 微软雅黑;white-space:normal;orphans:2;float:none;letter-spacing:normal;color:#000000;word-spacing:0px;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0px;">好,还有发一个包和收一个包数据的代码,给大家帖出来.</span> <div style="widows:2;text-transform:none;text-indent:0px;font:18px 微软雅黑;white-space:normal;orphans:2;letter-spacing:normal;color:#000000;word-spacing:0px;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0px;"><br />
</div>
<div style="widows:2;text-transform:none;text-indent:0px;font:18px 微软雅黑;white-space:normal;orphans:2;letter-spacing:normal;color:#000000;word-spacing:0px;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0px;">
<div>//启动NRF24L01发送一次数据</div>
<div>//txbuf:待发送数据首地址</div>
<div>//返回值:发送完成状况</div>
<div>u8 NRF24L01_TxPacket(u8 *txbuf)</div>
<div>{</div>
<div>u8 sta;</div>
<div><br />
</div>
<div><span style="color:#ff0000;">NRF24L01_CE=0;</span></div>
<div><br />
</div>
<div> <span class="Apple-converted-space"> </span><span style="white-space:pre;" class="Apple-tab-span"> </span>NRF24L01_Write_Buf(WR_TX_PLOAD,txbuf,TX_PLOAD_WIDTH);//写数据到TX BUF 32个字节</div>
<div><br />
</div>
<div> <span style="white-space:pre;" class="Apple-tab-span"> </span><span style="color:#ff0000;">NRF24L01_CE=1;//启动发送</span></div>
<div><span class="Apple-converted-space"> </span> </div>
<div><span style="color:#ffa500;">while(NRF24L01_IRQ!=0);//等待发送完成</span></div>
<div><br />
</div>
<div>sta=NRF24L01_Read_Reg(STATUS); //读取状态寄存器的值</div>
<div><br />
</div>
<div> </div>
<div>NRF24L01_Write_Reg(WRITE_REG+STATUS,sta); //清除TX_DS或MAX_RT中断标志</div>
<div><br />
</div>
<div>if(sta&MAX_TX)//达到最大重发次数</div>
<div>{</div>
<div>NRF24L01_Write_Reg(FLUSH_TX,0xff);//清除TX FIFO寄存器 </div>
<div>return MAX_TX; </div>
<div>}</div>
<div>if(sta&TX_OK)//发送完成</div>
<div>{</div>
<div>return TX_OK;</div>
<div>}</div>
<div>return 0xff;//其他原因发送失败</div>
<div>}</div>
<div><br />
</div>
</div>
<div style="widows:2;text-transform:none;text-indent:0px;font:18px 微软雅黑;white-space:normal;orphans:2;letter-spacing:normal;color:#000000;word-spacing:0px;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0px;">记住要记住<span style="color:#ff0000;">有颜色</span>的这几行.</div>
<div style="widows:2;text-transform:none;text-indent:0px;font:18px 微软雅黑;white-space:normal;orphans:2;letter-spacing:normal;color:#000000;word-spacing:0px;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0px;">然后是收一包数据.</div>
<div style="widows:2;text-transform:none;text-indent:0px;font:18px 微软雅黑;white-space:normal;orphans:2;letter-spacing:normal;color:#000000;word-spacing:0px;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0px;"><br />
</div>
<div style="widows:2;text-transform:none;text-indent:0px;font:18px 微软雅黑;white-space:normal;orphans:2;letter-spacing:normal;color:#000000;word-spacing:0px;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0px;">
<div>u8 NRF24L01_RxPacket(u8 *rxbuf)</div>
<div>{</div>
<div>u8 sta,sta1;</div>
<div><span class="Apple-converted-space"> </span> <span style="white-space:pre;" class="Apple-tab-span"> </span><span class="Apple-converted-space"> </span> </div>
<div>sta=NRF24L01_Read_Reg(STATUS); //读取状态寄存器的值</div>
<div><br />
</div>
<div><span class="Apple-converted-space"> </span> <span style="white-space:pre;" class="Apple-tab-span"> </span> </div>
<div><span style="color:#ff0000;">NRF24L01_Write_Reg(WRITE_REG+STATUS,sta); //清除TX_DS或MAX_RT中断标志</span></div>
<div><br />
</div>
<div>Clear_line(18,0,30);</div>
<div>sta1=NRF24L01_Read_Reg(STATUS);</div>
<div>Bit_show(18,11,sta1);</div>
<div><br />
</div>
<div><br />
</div>
<div>if(sta&RX_OK)//接收到数据</div>
<div>{</div>
<div>NRF24L01_Read_Buf(RD_RX_PLOAD,rxbuf,RX_PLOAD_WIDTH);//读取数据</div>
<div>NRF24L01_Write_Reg(FLUSH_RX,0xff);//清除RX FIFO寄存器 </div>
<div>return 0; </div>
<div>}<span style="white-space:pre;" class="Apple-tab-span"> </span><span class="Apple-converted-space"> </span> </div>
<div>return 1;//没收到任何数据</div>
<div>}<span style="white-space:pre;" class="Apple-tab-span"> </span></div>
</div>
<div style="widows:2;text-transform:none;text-indent:0px;font:18px 微软雅黑;white-space:normal;orphans:2;letter-spacing:normal;color:#000000;word-spacing:0px;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0px;"><br />
</div>
<div style="widows:2;text-transform:none;text-indent:0px;font:18px 微软雅黑;white-space:normal;orphans:2;letter-spacing:normal;color:#000000;word-spacing:0px;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0px;"><br />
</div>
<div style="widows:2;text-transform:none;text-indent:0px;font:18px 微软雅黑;white-space:normal;orphans:2;letter-spacing:normal;color:#000000;word-spacing:0px;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0px;">看到没有,和发数据不同,这里不用 <span class="Apple-converted-space"> </span><span style="color:#ff0000;">NRF24L01_CE=0</span>和<span style="color:#ff0000;">NRF24L01_CE=1.</span></div>
<div style="widows:2;text-transform:none;text-indent:0px;font:18px 微软雅黑;white-space:normal;orphans:2;letter-spacing:normal;color:#000000;word-spacing:0px;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0px;"><span style="color:#ff0000;"><br />
</span></div>
<div style="widows:2;text-transform:none;text-indent:0px;font:18px 微软雅黑;white-space:normal;orphans:2;letter-spacing:normal;color:#000000;word-spacing:0px;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0px;"><span style="color:#ff0000;"><br />
</span></div>
<div style="widows:2;text-transform:none;text-indent:0px;font:18px 微软雅黑;white-space:normal;orphans:2;letter-spacing:normal;color:#000000;word-spacing:0px;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0px;"><span style="color:#ff0000;">如下几点在调试的时候总结出来的:</span></div>
<div style="widows:2;text-transform:none;text-indent:0px;font:18px 微软雅黑;white-space:normal;orphans:2;letter-spacing:normal;color:#000000;word-spacing:0px;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0px;">
<ol>
<li><span style="color:#ff0000;">如果 TX FIFO 刚好够32个数时,状态寄存器都会显示 0 未满.如再丢进去就会说满了.</span></li>
<li><span style="color:#ff0000;">重启计算机时要记住重起一下NRF24 因为里边的数据还是之前的,除非重写一次.</span></li>
<li><span style="color:#ff0000;">中断位是要写1清0的.</span></li>
<li><span style="color:#ff0000;">如果地址都相同,读出来数据的是频道号数最大的那个频道.就是接收5通道. 大家可以做下实验,看对不对.</span></li>
<li><span style="color:#ff0000;">频道2~5只需写一个8位的地址就行.</span></li>
<li><span style="color:#ff0000;">有时中断产生了,但RX_FIFO会为0,要重读一次.</span></li>
</ol>
</div>
<div style="widows:2;text-transform:none;text-indent:0px;font:18px 微软雅黑;white-space:normal;orphans:2;letter-spacing:normal;color:#000000;word-spacing:0px;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0px;">好了.大家如还发现什么都发到帖上去吧.</div>
<div style="widows:2;text-transform:none;text-indent:0px;font:18px 微软雅黑;white-space:normal;orphans:2;letter-spacing:normal;color:#000000;word-spacing:0px;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0px;">我丢上两个代码给大家试试.压缩的文件.</div> |
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