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您好，我正在尝试使用PIC24FJ64 GA2000和NFR24L01+无线电接收机模块来构建无线电发射机和接收机模块。我认为我在配置SPI和使用SPIX读写功能方面遇到了问题。EAD是我写的一个值，我接收的值不是我写的值。我只是收到一些随机或不合理的价值。如果可能的话，你能帮我解决我的问题吗？这里是一个代码，我在PIC24上配置SPI：空隙SPILIN（）{SPI1CON1＝0；//SPI1CON1寄存器设置SPI1CON1BIT.DISSCK＝0；//内部串行时钟启用SPI1CON1BITS DISSDO＝0；//SODOX引脚由模块SPI1CON1BIT控制。MODE16 16＝0；/通信是字宽（8位）。s）SPI1CON1BITS＝1；//主模式使能SPI1CON1BITS。SMP＝0；/ /输入数据在数据输出时间SPI1CON1BIT.CKE＝1结束时被采样；/ /串行输出数据在从/ /空闲时钟状态过渡到活动时钟状态SPI1CON1BIT.CKP＝0；/ /用于CL的空闲状态变化Bog是一个低电平；//Active状态是一个高电平的SPI1CON1位。SpRe= 0B111；//二次时钟1:1 SPI1CONBITE。PPRE＝0B01；//主时钟1:16 SPI1CON2＝0；SPI1STATT＝0；SPI1STATBITS.SISEL＝0B101；//如果最后一位移位/ /表示SPI XFER时设置。是完整的。SPI1STATBITS。SPIN＝1；//启用SPI模块PC2BITS.SPF1IP＝6；/ /为SPI/ /中断控制器设置设置高优先级中断IFS0BITS SPI1IF＝0；/ /清除中断标志IEC0BITSIP1IE＝0；/ /禁用中断}这里也是我的SPI读写功能：UIT88T SPILRW（UIT8RY）T字节）{UIT88T DATAYIN；SPI1BUF＝字节；//通过SPI发送一个代码到（SPI1IF＝0）；πSPI1IF＝0；/RESET标志变量DATAYIN＝SPI1BUF；/ /接收到返回数据DATAIN；}这里是我的测试用例：SPIXRW（0x20）；我写的是注册0x00 SPIXRW（0x2e）；m为注册0x00 SPIXRW（0x00）；我正在读取一个值，从0x00 RealStaseDistabySpRyrw（0xFF）；发送一些垃圾值从寄存器0x00获取一个值供参考：数据表：HTTPS://www. SPARKFUN.COM/DATHESETS/CONTRONS/SMD/NFR24L01PLASSSILPRONTIAL OFFICTATION V1.0你可以从PIC24找到命令行、寄存器和状态。PIC24: HTTP:/WW1.MICCHIP.COM/DeLoSs/En/DeVICECD/981E.PDFIF搜索SPI的数据表，你可以找到SPI部分。也许我缺少一些小东西，但是请帮助我。谢谢。
以上来自于百度翻译 以下为原文 Hello, I am trying to build a radio transmitter and receiver module using PIC24FJ64GA002 and nRF24L01+ radio transreceiver module. I think I am having a problem with configuring my SPI and using spi_read_write function. Because, when I just write a certain value to a register of nRF24L01+ and try to read a value that I wrote, the value that I am receiving is not a value that I wrote. Im just receiving some random or unreasonable value. If it is possible, could you help me to figure out my problem? Here is a code that I am configuring my SPI on PIC24: void spi_init(){ SPI1CON1=0; // SPI1CON1 Register Settings SPI1CON1bits.DISSCK = 0; // Internal serial clock is enabled SPI1CON1bits.DISSDO = 0; // SDOx pin is controlled by the module SPI1CON1bits.MODE16 = 0; // Communication is word-wide (8 bits) SPI1CON1bits.MSTEN = 1; // Master mode enabled SPI1CON1bits.SMP = 0; // Input data is sampled at the end of data output time SPI1CON1bits.CKE = 1; // Serial output data changes on transition from // Idle clock state to active clock state SPI1CON1bits.CKP = 0; // Idle state for clock is a low level; // active state is a high level SPI1CON1bits.SPRE=0b111; //secondary clock 1:1 SPI1CON1bits.PPRE=0b01; // primary clock 1:16 SPI1CON2=0; SPI1STAT=0; SPI1STATbits.SISEL = 0b101; // IF set when last bit is shifted out // That means the SPI xfer is complete. SPI1STATbits.SPIEN = 1; // Enable SPI module IPC2bits.SPF1IP = 6; // setting a high priority interrupt for spi // Interrupt Controller Settings IFS0bits.SPI1IF = 0; // Clear the Interrupt flag IEC0bits.SPI1IE = 0; // Disable the interrupt } Also here is my Spi read write function: uint8_t SPI_RW(uint8_t byte) { uint8_t data_in; SPI1BUF=byte; // sending a code to transmitter through SPI while (_SPI1IF == 0) ; _SPI1IF=0; // reset flag variable data_in=SPI1BUF; // data that is received return data_in; } Here is my test cases: SPI_RW(0x20); I am writing to register 0x00 SPI_RW(0x2e); the value that I am writing to register 0x00 SPI_RW(0x00); I am reading a value from 0x00 register data = SPI_RW(0xff); sending some junk value to get a value from register 0x00 For your reference: data sheet for radio: https://www.sparkfun.com/datashe ... cification_v1_0.pdf You can find command lines, registers, and states from here. data sheet for PIC24: http://ww1.microchip.com/downloads/en/DeviceDoc/39881e.pdf if search SPI, you can find spi section. Maybe I am missing some small things, but please help me. Thank you. 
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5个回答
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相同（可能是由于迟交批准）http://www. McCux.com…/M105732. ASPXα1055732
以上来自于百度翻译 以下为原文 same (possibly due to late approval) https://www.microchip.com.../m1055732.aspx#1055732 |
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你好，达里奥，谢谢你的回复。你能详细介绍一下你的评论吗？我不太清楚你说的是什么。谢谢。
以上来自于百度翻译 以下为原文 Hello Dario, Thank you for the reply. Could you elaborate more on your comment? I am not really sure what you are trying to say. Thanks. |
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他说你有两个相同的帖子。（关于为什么这可能发生的评论）把所有回复都放在一个主题里要简单得多，所以请坚持另一个。
以上来自于百度翻译 以下为原文 He is saying you have two identical posts. (With a comment about why this probably happened) It's much simpler to keep all the replies in just one topic, so please stick to the other one. |
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对不起，我把我的回复写错了。我可以删除这个帖子吗？
以上来自于百度翻译 以下为原文 Ohh sorry I wrote my reply to wrong one. Can I delete this post? |
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