NRF24L01调试出现问题

yaoxiaofeng

<div><div>今天用同事的2个NRF24L01找了个例程在板上试，主机发送数据，从机接受得到，但是主机里面调用函数u8 NRF_Tx_Dat(u8 *txbuf)里面卡住了，会不会是IRQ引脚问题呢？ IRQ引脚我设置为上拉，理论上是发送和接受完后IRQ变低电平。<br />
<div>&nbsp;&nbsp;<span class="Apple-tab-span" style="white-space:pre;">        </span>SPI_RW_Reg(WRITE_REG1 + CONFIG, 0x0e); &nbsp; &nbsp; &nbsp;TX_mode()<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; SPI_RW_Reg(WRITE_REG1 + CONFIG, 0x0f); &nbsp; &nbsp; &nbsp;RX_mode()&nbsp;</div>
&nbsp;&nbsp; &nbsp; &nbsp;&nbsp;<br />
原子哥，求不吝赐教。&nbsp;<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />
<br />
u8 NRF_Tx_Dat(u8 *txbuf)</div>
<div>{</div>
<div><span class="Apple-tab-span" style="white-space:pre;">        </span>u8 state; &nbsp;</div>
<div><br />
</div>
<div><span class="Apple-tab-span" style="white-space:pre;">        </span>NRF_CE_LOW();</div>
<div><span class="Apple-tab-span" style="white-space:pre;">                                        </span></div>
<div>&nbsp; &nbsp; &nbsp; &nbsp; SPI_NRF_WriteBuf(WR_TX_PLOAD,txbuf,TX_PLOAD_WIDTH); &nbsp; &nbsp;//到这里发送都是正常的，但是我检测返回就是没有。</div>
<div><br />
</div>
<div>&nbsp; &nbsp; &nbsp; &nbsp; NRF_CE_HIGH();</div>
<div><span class="Apple-tab-span" style="white-space:pre;">        </span> &nbsp;<span class="Apple-tab-span" style="white-space:pre;">        </span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</div>
<div><span class="Apple-tab-span" style="white-space:pre;">        </span>while(NRF_Read_IRQ()!=0); <span class="Apple-tab-span" style="white-space:pre;">        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span></div>
<div><span class="Apple-tab-span" style="white-space:pre;">        </span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</div>
<div><span class="Apple-tab-span" style="white-space:pre;">        </span>state = SPI_NRF_ReadReg(STATUS);&nbsp;</div>
<div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</div>
<div><span class="Apple-tab-span" style="white-space:pre;">        </span>SPI_NRF_WriteReg(NRF_WRITE_REG+STATUS,state); <span class="Apple-tab-span" style="white-space:pre;">        </span></div>
<div><br />
</div>
<div><span class="Apple-tab-span" style="white-space:pre;">        </span>SPI_NRF_WriteReg(FLUSH_TX,NOP); &nbsp; &nbsp;</div>
<div><br />
</div>
<div><span class="Apple-tab-span" style="white-space:pre;">        </span>if(state&amp;MAX_RT) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</div>
<div><span class="Apple-tab-span" style="white-space:pre;">                        </span> return MAX_RT;&nbsp;</div>
<div><br />
</div>
<div><span class="Apple-tab-span" style="white-space:pre;">        </span>else if(state&amp;TX_DS) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</div>
<div><span class="Apple-tab-span" style="white-space:pre;">                </span> <span class="Apple-tab-span" style="white-space:pre;">        </span>return TX_DS;</div>
<div><span class="Apple-tab-span" style="white-space:pre;">        </span> else<span class="Apple-tab-span" style="white-space:pre;">                                                </span> &nbsp;</div>
<div><span class="Apple-tab-span" style="white-space:pre;">                        </span>return ERROR; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</div>
<div>}&nbsp;</div>
</div>

yaoxiaofeng

刚又测试了下，发现就是卡在了while(NRF_Read_IRQ()!=0);难道是我的设置有问题，再检查下。

正点原子

有个网友做了和你类似的：<a href="http://www.openedv.com/posts/list/20816.htm">http://www.openedv.com/posts/list/20816.htm</a><br />

yaoxiaofeng

已经发现问题，IRQ使用的端口一直无法拉低，把PA3换成PA4一切正常。