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[问答] 用ministm32开发板做MINISTM32无线通信实验,PA2,3有没有用
18 STM32
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跪求原子哥,,,我用的是miniSTM32开发板,,,在做『MINISTM32 实验19 无线通信实验』,,,,,,<span style="color:#e53333;font-size:32px;">请问PA2,3有没有用???????</span><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">#include "24l01.h"</span></span><div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">#include "lcd.h"</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">#include "delay.h"</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">#include "spi.h"</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//////////////////////////////////////////////////////////////////////////////////<span class="Apple-tab-span" style="white-space:pre;">        </span> </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//本程序只供学习使用,未经作者许可,不得用于其它任何用途</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//Mini STM32开发板</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//NRF24L01 驱动函数<span class="Apple-tab-span" style="white-space:pre;">        </span>   </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//发烧友@alientek</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//技术论坛:www.openedv.com</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//修改日期:2010/6/16 </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//版本:V1.0</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//版权所有,盗版必究。</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//Copyright(C) 发烧友 2009-2019</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//All rights reserved</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">////////////////////////////////////////////////////////////////////////////////// <span class="Apple-tab-span" style="white-space:pre;">        </span>  </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"> </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span> </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><br />
</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">const u8 TX_ADDRESS[TX_ADR_WIDTH]={0x34,0x43,0x10,0x10,0x01}; //发送地址</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">const u8 RX_ADDRESS[RX_ADR_WIDTH]={0x34,0x43,0x10,0x10,0x01}; //接受地址</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">                                                        </span>    </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//初始化24L01的IO口</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">void NRF24L01_Init(void)</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">{</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>RCC->APB2ENR|=1<<2;    //使能PORTA口时钟 </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>RCC->APB2ENR|=1<<4;    //使能PORTC口时钟 </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span><span style="color:#009900;">GPIOA->CRL&=0XFFF0FFFF;//PA4输出?????</span></span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;color:#009900;"><span class="Apple-tab-span" style="white-space:pre;color:#009900;">        </span>GPIOA->CRL|=0X00030000; ?????????</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;color:#009900;">        </span><span style="color:#009900;">GPIOA->ODR|=7<<2;</span><span class="Apple-tab-span" style="white-space:pre;color:#009900;">        </span><span style="color:#009900;">   //PA2.3.4 输出1???????</span><span class="Apple-tab-span" style="white-space:pre;">                </span> </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>GPIOC->CRL&=0XFF00FFFF;//PC4输出 PC5输出</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>GPIOC->CRL|=0X00830000; </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>GPIOC->ODR|=3<<4;<span class="Apple-tab-span" style="white-space:pre;">        </span>   //上拉<span class="Apple-tab-span" style="white-space:pre;">        </span> </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>SPIx_Init();    //初始化SPI</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_CE=0; <span class="Apple-tab-span" style="white-space:pre;">        </span>//使能24L01</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_CSN=1;<span class="Apple-tab-span" style="white-space:pre;">        </span>//SPI片选取消<span class="Apple-tab-span" style="white-space:pre;">                </span>  <span class="Apple-tab-span" style="white-space:pre;">                </span> <span class="Apple-tab-span" style="white-space:pre;">                </span>  </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">}</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//检测24L01是否存在</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//返回值:0,成功;1,失败<span class="Apple-tab-span" style="white-space:pre;">        </span></span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">u8 NRF24L01_Check(void)</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">{</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>u8 buf[5]={0XA5,0XA5,0XA5,0XA5,0XA5};</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>u8 i;</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>SPIx_SetSpeed(SPI_SPEED_8); //spi速度为9Mhz(24L01的最大SPI时钟为10Mhz)   <span class="Apple-tab-span" style="white-space:pre;">        </span> </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Buf(WRITE_REG+TX_ADDR,buf,5);//写入5个字节的地址.(指令+地址寄存器地址)<span class="Apple-tab-span" style="white-space:pre;">        </span></span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Read_Buf(TX_ADDR,buf,5); //读出写入的地址  </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>for(i=0;i<5;i++)IF(buf!=0XA5)break;<span class="Apple-tab-span" style="white-space:pre;">        </span> <span class="Apple-tab-span" style="white-space:pre;">                                                        </span>   </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>if(i!=5)return 1;//检测24L01错误<span class="Apple-tab-span" style="white-space:pre;">        </span></span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>return 0;<span class="Apple-tab-span" style="white-space:pre;">                </span> //检测到24L01</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">}<span class="Apple-tab-span" style="white-space:pre;">        </span> <span class="Apple-tab-span" style="white-space:pre;">        </span> </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//SPI写寄存器</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//reg:指定寄存器地址</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//value:写入的值</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">u8 NRF24L01_Write_Reg(u8 reg,u8 value)</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">{</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>u8 status;<span class="Apple-tab-span" style="white-space:pre;">        </span></span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">   <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_CSN=0;                 //使能SPI传输</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>status =SPIx_ReadWriteByte(reg);//发送寄存器号 </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>SPIx_ReadWriteByte(value);      //写入寄存器的值</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_CSN=1;                 //禁止SPI传输<span class="Apple-tab-span" style="white-space:pre;">        </span>   </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>return(status);       <span class="Apple-tab-span" style="white-space:pre;">                        </span>//返回状态值</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">}</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//读取SPI寄存器值</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//reg:要读的寄存器</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">u8 NRF24L01_Read_Reg(u8 reg)</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">{</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>u8 reg_val;<span class="Apple-tab-span" style="white-space:pre;">        </span>    </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"> <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_CSN = 0;          //使能SPI传输<span class="Apple-tab-span" style="white-space:pre;">                </span></span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>SPIx_ReadWriteByte(reg);   //发送寄存器号</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>reg_val=SPIx_ReadWriteByte(0XFF);//读取寄存器内容</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_CSN = 1;          //禁止SPI传输<span class="Apple-tab-span" style="white-space:pre;">                </span>    </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>return(reg_val);           //返回状态值</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">}<span class="Apple-tab-span" style="white-space:pre;">        </span></span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//在指定位置读出指定长度的数据</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//reg:寄存器(位置)</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//*pBuf:数据指针</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//len:数据长度</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//返回值,此次读到的状态寄存器值 </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">u8 NRF24L01_Read_Buf(u8 reg,u8 *pBuf,u8 len)</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">{</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>u8 status,u8_ctr;<span class="Apple-tab-span" style="white-space:pre;">        </span>       </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_CSN = 0;           //使能SPI传输</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>status=SPIx_ReadWriteByte(reg);//发送寄存器值(位置),并读取状态值   <span class="Apple-tab-span" style="white-space:pre;">        </span>   </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"> <span class="Apple-tab-span" style="white-space:pre;">        </span>for(u8_ctr=0;u8_ctr<len;u8_ctr++)pBuf[u8_ctr]=SPIx_ReadWriteByte(0XFF);//读出数据</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_CSN=1;       //关闭SPI传输</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>return status;        //返回读到的状态值</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">}</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//在指定位置写指定长度的数据</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//reg:寄存器(位置)</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//*pBuf:数据指针</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//len:数据长度</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//返回值,此次读到的状态寄存器值</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">u8 NRF24L01_Write_Buf(u8 reg, u8 *pBuf, u8 len)</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">{</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>u8 status,u8_ctr;<span class="Apple-tab-span" style="white-space:pre;">        </span>    </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"> <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_CSN = 0;          //使能SPI传输</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>status = SPIx_ReadWriteByte(reg);//发送寄存器值(位置),并读取状态值</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>for(u8_ctr=0; u8_ctr<len; u8_ctr++)SPIx_ReadWriteByte(*pBuf++); //写入数据<span class="Apple-tab-span" style="white-space:pre;">        </span> </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_CSN = 1;       //关闭SPI传输</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>return status;          //返回读到的状态值</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">}<span class="Apple-tab-span" style="white-space:pre;">                                </span>   </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//启动NRF24L01发送一次数据</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//txbuf:待发送数据首地址</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//返回值:发送完成状况</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">u8 NRF24L01_TxPacket(u8 *txbuf)</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">{</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>u8 sta;</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"> <span class="Apple-tab-span" style="white-space:pre;">        </span>SPIx_SetSpeed(SPI_SPEED_8);//spi速度为9Mhz(24L01的最大SPI时钟为10Mhz)   </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_CE=0;</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Buf(WR_TX_PLOAD,txbuf,TX_PLOAD_WIDTH);//写数据到TX BUF  32个字节</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"> <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_CE=1;//启动发送<span class="Apple-tab-span" style="white-space:pre;">        </span>   </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>while(NRF24L01_IRQ!=0);//等待发送完成</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>sta=NRF24L01_Read_Reg(STATUS);  //读取状态寄存器的值<span class="Apple-tab-span" style="white-space:pre;">        </span>   </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Reg(WRITE_REG+STATUS,sta); //清除TX_DS或MAX_RT中断标志</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>if(sta&MAX_TX)//达到最大重发次数</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>{</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">                </span>NRF24L01_Write_Reg(FLUSH_TX,0xff);//清除TX FIFO寄存器 </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">                </span>return MAX_TX; </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>}</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>if(sta&TX_OK)//发送完成</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>{</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">                </span>return TX_OK;</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>}</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>return 0xff;//其他原因发送失败</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">}</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//启动NRF24L01发送一次数据</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//txbuf:待发送数据首地址</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//返回值:0,接收完成;其他,错误代码</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">u8 NRF24L01_RxPacket(u8 *rxbuf)</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">{</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>u8 sta;<span class="Apple-tab-span" style="white-space:pre;">                </span>    <span class="Apple-tab-span" style="white-space:pre;">                                                        </span>   </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>SPIx_SetSpeed(SPI_SPEED_8); //spi速度为9Mhz(24L01的最大SPI时钟为10Mhz)   </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>sta=NRF24L01_Read_Reg(STATUS);  //读取状态寄存器的值    <span class="Apple-tab-span" style="white-space:pre;">        </span> </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Reg(WRITE_REG+STATUS,sta); //清除TX_DS或MAX_RT中断标志</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>if(sta&RX_OK)//接收到数据</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>{</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">                </span>NRF24L01_Read_Buf(RD_RX_PLOAD,rxbuf,RX_PLOAD_WIDTH);//读取数据</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">                </span>NRF24L01_Write_Reg(FLUSH_RX,0xff);//清除RX FIFO寄存器 </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">                </span>return 0; </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>}<span class="Apple-tab-span" style="white-space:pre;">        </span>   </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>return 1;//没收到任何数据</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">}<span class="Apple-tab-span" style="white-space:pre;">                                        </span>    </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//该函数初始化NRF24L01到RX模式</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//设置RX地址,写RX数据宽度,选择RF频道,波特率和LNA HCURR</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//当CE变高后,即进入RX模式,并可以接收数据了<span class="Apple-tab-span" style="white-space:pre;">                </span>   </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">void RX_Mode(void)</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">{</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_CE=0;<span class="Apple-tab-span" style="white-space:pre;">        </span>  </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Buf(WRITE_REG+RX_ADDR_P0,(u8*)RX_ADDRESS,RX_ADR_WIDTH);//写RX节点地址</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>  </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Reg(WRITE_REG+EN_AA,0x01);    //使能通道0的自动应答    </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Reg(WRITE_REG+EN_RXADDR,0x01);//使能通道0的接收地址  <span class="Apple-tab-span" style="white-space:pre;">        </span> </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Reg(WRITE_REG+RF_CH,40);<span class="Apple-tab-span" style="white-space:pre;">        </span>     //设置RF通信频率<span class="Apple-tab-span" style="white-space:pre;">                </span>  </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Reg(WRITE_REG+RX_PW_P0,RX_PLOAD_WIDTH);//选择通道0的有效数据宽度 <span class="Apple-tab-span" style="white-space:pre;">        </span>    </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Reg(WRITE_REG+RF_SETUP,0x0f);//设置TX发射参数,0db增益,2Mbps,低噪声增益开启   </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Reg(WRITE_REG+CONFIG, 0x0f);//配置基本工作模式的参数WR_UP,EN_CRC,16BIT_CRC,接收模式 </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_CE = 1; //CE为高,进入接收模式 </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">}<span class="Apple-tab-span" style="white-space:pre;">                                                </span> </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//该函数初始化NRF24L01到TX模式</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//设置TX地址,写TX数据宽度,设置RX自动应答的地址,填充TX发送数据,选择RF频道,波特率和LNA HCURR</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//PWR_UP,CRC使能</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//当CE变高后,即进入RX模式,并可以接收数据了<span class="Apple-tab-span" style="white-space:pre;">                </span>   </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">//CE为高大于10us,则启动发送.<span class="Apple-tab-span" style="white-space:pre;">        </span> </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">void TX_Mode(void)</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">{<span class="Apple-tab-span" style="white-space:pre;">                                                                                                                </span> </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_CE=0;<span class="Apple-tab-span" style="white-space:pre;">        </span>    </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Buf(WRITE_REG+TX_ADDR,(u8*)TX_ADDRESS,TX_ADR_WIDTH);//写TX节点地址 </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Buf(WRITE_REG+RX_ADDR_P0,(u8*)RX_ADDRESS,RX_ADR_WIDTH); //设置TX节点地址,主要为了使能ACK<span class="Apple-tab-span" style="white-space:pre;">        </span>  </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><br />
</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Reg(WRITE_REG+EN_AA,0x01);     //使能通道0的自动应答    </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Reg(WRITE_REG+EN_RXADDR,0x01); //使能通道0的接收地址  </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Reg(WRITE_REG+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</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Reg(WRITE_REG+RF_CH,40);       //设置RF通道为40</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Reg(WRITE_REG+RF_SETUP,0x0f);  //设置TX发射参数,0db增益,2Mbps,低噪声增益开启   </span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">  <span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_Write_Reg(WRITE_REG+CONFIG,0x0e);    //配置基本工作模式的参数WR_UP,EN_CRC,16BIT_CRC,接收模式,开启所有中断</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;"><span class="Apple-tab-span" style="white-space:pre;">        </span>NRF24L01_CE=1;//CE为高,10us后启动发送</span></span></div>
<div><span style="color:#e53333;font-size:x-large;"><span style="line-height:48px;">}<span class="Apple-tab-span" style="white-space:pre;">                </span>  </span></span></div>
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2020-5-22 04:34:00   评论 分享淘帖 邀请回答
5个回答
不用跪求,其实这个我们在教程是有说了的,可能你没注意看到.
<br>这里spi被好几个外设共用了,使能PA2,PA3,就是为了让那些没有用到的外设处于非激活状态,不去干扰NRF24L01的通信.
<br>如果同时开启,可能会有问题的.
2020-5-22 15:39:51 评论

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NRF24L01_Write_Buf(WRITE_REG+TX_ADDR,buf,5);&nbsp;把WRITE_REG+TX_ADDR加起来是什么意思呢?这样寄存器地址不久不对了吗
2020-5-22 15:59:30 评论

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<br>请问原子哥,,我怎么找不到nrf2401的引脚接在哪呢,,只找到三个,,在24l01。h里,,,其他的呢,,,请指导。。。
2020-5-22 16:10:22 评论

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请问楼主知道除了24l01。h里的三个引脚,,其他引脚在哪么
2020-5-22 16:17:48 评论

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其他除两条电源线外,还有3条接SPI2接口

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