DSP28335与FPGA进行SPI通信，DSP为C语言代码，FPGA为verilog代码

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DSP28335与FPGA进行SPI通信，DSP为C语言代码，FPGA为verilog代码
<link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/base.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/fancy.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/90239748/2/raw.css" rel="stylesheet"/><div id="sidebar" style="display: none"><div id="outline"></div></div><div class="pf w0 h0" data-page-no="1" id="pf1"><div class="pc pc1 w0 h0"><img alt="" class="bi x0 y0 w1 h1" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/90239748/bg1.jpg"/><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">**DSP28335<span class="_ _0"> </span><span class="ff2">与<span class="_ _1"> </span></span>FPGA<span class="_ _0"> </span><span class="ff2">的<span class="_ _1"> </span></span>SPI<span class="_ _0"> </span><span class="ff2">通信技术详解</span>**</div><div class="t m0 x1 h2 y2 ff2 fs0 fc0 sc0 ls0 ws0">一<span class="ff3">、</span>引言</div><div class="t m0 x1 h2 y3 ff2 fs0 fc0 sc0 ls0 ws0">在现代电子系统中<span class="ff4">，<span class="ff1">DSP</span>（</span>数字信号处理器<span class="ff4">）</span>和<span class="_ _1"> </span><span class="ff1">FPGA<span class="ff4">（</span></span>现场可编程门阵列<span class="ff4">）</span>因其强大的数据处理能力</div><div class="t m0 x1 h2 y4 ff2 fs0 fc0 sc0 ls0 ws0">和灵活的编程特性<span class="ff4">，</span>被广泛应用于各种复杂系统之中<span class="ff3">。</span>而<span class="_ _1"> </span><span class="ff1">SPI<span class="ff4">（</span></span>串行外设接口<span class="ff4">）</span>作为一种常用的通信</div><div class="t m0 x1 h2 y5 ff2 fs0 fc0 sc0 ls0 ws0">协议<span class="ff4">，</span>能够实现高速数据传输<span class="ff4">，</span>被广泛用于<span class="_ _1"> </span><span class="ff1">DSP<span class="_ _0"> </span></span>与<span class="_ _1"> </span><span class="ff1">FPGA<span class="_ _0"> </span></span>之间的数据交换<span class="ff3">。</span>本文将详细介绍</div><div class="t m0 x1 h2 y6 ff1 fs0 fc0 sc0 ls0 ws0">DSP28335<span class="_ _0"> </span><span class="ff2">与<span class="_ _1"> </span></span>FPGA<span class="_ _0"> </span><span class="ff2">通过<span class="_ _1"> </span></span>SPI<span class="_ _0"> </span><span class="ff2">进行通信的技术实现方法<span class="ff4">，</span>并从技术层面进行深入分析<span class="ff3">。</span></span></div><div class="t m0 x1 h2 y7 ff2 fs0 fc0 sc0 ls0 ws0">二<span class="ff3">、<span class="ff1">DSP28335<span class="_ _0"> </span></span></span>与<span class="_ _1"> </span><span class="ff1">FPGA<span class="_ _0"> </span></span>简介</div><div class="t m0 x1 h3 y8 ff1 fs0 fc0 sc0 ls0 ws0">1.<span class="_ _2"> </span>DSP28335</div><div class="t m0 x1 h2 y9 ff1 fs0 fc0 sc0 ls0 ws0">DSP28335<span class="_ _0"> </span><span class="ff2">是一款高性能的数字信号处理器<span class="ff4">，</span>常被用于各种控制系统中<span class="ff3">。</span>其采用<span class="_ _1"> </span></span>C<span class="_ _0"> </span><span class="ff2">语言编程<span class="ff4">，</span>使得开</span></div><div class="t m0 x1 h2 ya ff2 fs0 fc0 sc0 ls0 ws0">发者能够更加便捷地实现复杂的算法和控制逻辑<span class="ff3">。</span></div><div class="t m0 x1 h3 yb ff1 fs0 fc0 sc0 ls0 ws0">2.<span class="_ _2"> </span>FPGA</div><div class="t m0 x1 h2 yc ff1 fs0 fc0 sc0 ls0 ws0">FPGA<span class="_ _0"> </span><span class="ff2">是一种可编程逻辑器件<span class="ff4">，</span>通过硬件描述语言<span class="ff4">（</span>如<span class="_ _1"> </span></span>Verilog<span class="ff4">）<span class="ff2">进行编程</span>，<span class="ff2">能够实现各种复杂的数</span></span></div><div class="t m0 x1 h2 yd ff2 fs0 fc0 sc0 ls0 ws0">字逻辑功能<span class="ff3">。</span>在电子系统中<span class="ff4">，<span class="ff1">FPGA<span class="_ _0"> </span></span></span>常被用于实现各种专用算法和接口逻辑<span class="ff3">。</span></div><div class="t m0 x1 h2 ye ff2 fs0 fc0 sc0 ls0 ws0">三<span class="ff3">、<span class="ff1">SPI<span class="_ _0"> </span></span></span>通信协议简介</div><div class="t m0 x1 h2 yf ff1 fs0 fc0 sc0 ls0 ws0">SPI<span class="ff4">（</span>Serial Peripheral Interface<span class="ff4">）<span class="ff2">是一种串行通信协议</span>，<span class="ff2">常被用于微控制器与外围设备之</span></span></div><div class="t m0 x1 h2 y10 ff2 fs0 fc0 sc0 ls0 ws0">间的数据传输<span class="ff3">。<span class="ff1">SPI<span class="_ _0"> </span></span></span>通信主要由四根线组成<span class="ff4">：<span class="ff1">SCK</span>（</span>时钟线<span class="ff4">）<span class="ff3">、<span class="ff1">MOSI</span></span>（</span>主设备输出从设备输入线<span class="ff4">）<span class="ff3">、</span></span></div><div class="t m0 x1 h2 y11 ff1 fs0 fc0 sc0 ls0 ws0">MISO<span class="ff4">（<span class="ff2">主设备输入从设备输出线</span>）<span class="ff2">以及<span class="_ _1"> </span></span></span>CS<span class="ff4">（<span class="ff2">片选线</span>）<span class="ff3">。<span class="ff2">通过这四根线</span></span>，<span class="ff2">可以实现多个设备之间的主</span></span></div><div class="t m0 x1 h2 y12 ff2 fs0 fc0 sc0 ls0 ws0">从模式数据传输<span class="ff3">。</span></div><div class="t m0 x1 h2 y13 ff2 fs0 fc0 sc0 ls0 ws0">四<span class="ff3">、<span class="ff1">DSP28335<span class="_ _0"> </span></span></span>与<span class="_ _1"> </span><span class="ff1">FPGA<span class="_ _0"> </span></span>的<span class="_ _1"> </span><span class="ff1">SPI<span class="_ _0"> </span></span>通信实现</div><div class="t m0 x1 h2 y14 ff1 fs0 fc0 sc0 ls0 ws0">1.<span class="_ _2"> </span><span class="ff2">硬件连接</span></div><div class="t m0 x1 h2 y15 ff1 fs0 fc0 sc0 ls0 ws0">DSP28335<span class="_ _0"> </span><span class="ff2">与<span class="_ _1"> </span></span>FPGA<span class="_ _0"> </span><span class="ff2">通过<span class="_ _1"> </span></span>SPI<span class="_ _0"> </span><span class="ff2">接口进行连接<span class="ff4">，</span>需要按照<span class="_ _1"> </span></span>SPI<span class="_ _0"> </span><span class="ff2">协议的要求连接相应的引脚<span class="ff3">。</span>通常<span class="ff4">，</span></span>SCK</div><div class="t m0 x1 h2 y16 ff2 fs0 fc0 sc0 ls0 ws0">线<span class="ff3">、<span class="ff1">MOSI<span class="_ _0"> </span></span></span>线<span class="ff3">、<span class="ff1">MISO<span class="_ _0"> </span></span></span>线和<span class="_ _1"> </span><span class="ff1">CS<span class="_ _0"> </span></span>线都需要进行连接<span class="ff3">。</span></div><div class="t m0 x1 h2 y17 ff1 fs0 fc0 sc0 ls0 ws0">2.<span class="_ _2"> </span><span class="ff2">通信过程</span></div><div class="t m0 x1 h2 y18 ff2 fs0 fc0 sc0 ls0 ws0">在<span class="_ _1"> </span><span class="ff1">SPI<span class="_ _0"> </span></span>通信过程中<span class="ff4">，<span class="ff1">DSP28335<span class="_ _0"> </span></span></span>作为主设备<span class="ff4">，</span>负责发送时钟信号和数据信号<span class="ff4">；</span>而<span class="_ _1"> </span><span class="ff1">FPGA<span class="_ _0"> </span></span>作为从设备<span class="ff4">，</span></div><div class="t m0 x1 h2 y19 ff2 fs0 fc0 sc0 ls0 ws0">根据时钟信号接收数据或发送数据<span class="ff3">。</span>在<span class="_ _1"> </span><span class="ff1">C<span class="_ _0"> </span></span>语言中<span class="ff4">，<span class="ff1">DSP28335<span class="_ _0"> </span></span></span>通过<span class="_ _1"> </span><span class="ff1">SPI<span class="_ _0"> </span></span>接口模块发送指令和数据<span class="ff4">；</span></div><div class="t m0 x1 h2 y1a ff2 fs0 fc0 sc0 ls0 ws0">而在<span class="_ _1"> </span><span class="ff1">Verilog<span class="_ _0"> </span></span>中<span class="ff4">，<span class="ff1">FPGA<span class="_ _0"> </span></span></span>通过配置相应的逻辑单元实现数据的接收和发送<span class="ff3">。</span></div><div class="t m0 x1 h2 y1b ff2 fs0 fc0 sc0 ls0 ws0">五<span class="ff3">、<span class="ff1">DSP28335<span class="_ _0"> </span></span></span>的<span class="_ _1"> </span><span class="ff1">C<span class="_ _0"> </span></span>语言代码实现</div></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div>
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