<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[D1s读取nor flash导致音频的DMA出问题]]></title><description><![CDATA[<p dir="auto">D1s跑rtthread，配置音频驱动通过DMA固定传输32KB字节数据，中断时间大概170ms，进中断后翻转一个IO口。应用层读取nor flash，会改变音频的DMA中断时间，中断时间变为6ms左右，这个会是什么问题导致音频DMA传输速度变快了？</p>
]]></description><link>https://bbs.aw-ol.com/topic/4179/d1s读取nor-flash导致音频的dma出问题</link><generator>RSS for Node</generator><lastBuildDate>Sat, 16 May 2026 17:01:32 GMT</lastBuildDate><atom:link href="https://bbs.aw-ol.com/topic/4179.rss" rel="self" type="application/rss+xml"/><pubDate>Sat, 02 Sep 2023 09:45:31 GMT</pubDate><ttl>60</ttl><item><title><![CDATA[Reply to D1s读取nor flash导致音频的DMA出问题 on Mon, 04 Sep 2023 07:39:04 GMT]]></title><description><![CDATA[<p dir="auto">已解决，之前修改了底层的hal_dma.c中的中断回调函数导致的</p>
]]></description><link>https://bbs.aw-ol.com/post/18453</link><guid isPermaLink="true">https://bbs.aw-ol.com/post/18453</guid><dc:creator><![CDATA[qinchangzu]]></dc:creator><pubDate>Mon, 04 Sep 2023 07:39:04 GMT</pubDate></item></channel></rss>