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<?xml-stylesheet type="text/xsl" href="https://devzone.nordicsemi.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Problem with QSPI driver W25Q64FV</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/128698/problem-with-qspi-driver-w25q64fv</link><description>Hi,All： 
 I have a customized nRF52840 board with an external NOR Flash (W25Q64FV), and I have some confusion when conducting read and write data testing. This is my device tree configuration: 
 
 This is my test code: 
 
 
 然后向设备树添加： 
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