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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>Use a GPIO in input and output to generate signals internally to peripherals</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/4464/use-a-gpio-in-input-and-output-to-generate-signals-internally-to-peripherals</link><description>Hello , 
 As mentioned in another question, I would like to use the nrf51822 SPI slave peripheral to benefit from the DMA capability although I want to behave as an SPI master. 
 To do this, I would like to control the SPI_SS manually and the SPI_SCLK</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Wed, 19 Nov 2014 14:12:25 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/4464/use-a-gpio-in-input-and-output-to-generate-signals-internally-to-peripherals" /><item><title>RE: Use a GPIO in input and output to generate signals internally to peripherals</title><link>https://devzone.nordicsemi.com/thread/15846?ContentTypeID=1</link><pubDate>Wed, 19 Nov 2014 14:12:25 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:3b07be34-9575-4323-a34a-ae6625bbb396</guid><dc:creator>Stian R&amp;#248;ed Hafskjold</dc:creator><description>&lt;p&gt;Unfortunately, only one peripheral can be assigned to drive a particular GPIO pin at a time. So when the SPI slave is mapped to physical pins, you can only change these pins externally.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>