From 9ad896685124fb84348254f9bafe4fa5f50d9f7b Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Tue, 20 Oct 2009 14:05:56 +0000
Subject: Extend SPI interface to better handle multiple devices on same SPI
 bus

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2162 42af7a65-404d-4744-a932-0658087f49c3
---
 nuttx/Documentation/NuttxPortingGuide.html | 1 +
 1 file changed, 1 insertion(+)

(limited to 'nuttx/Documentation/NuttxPortingGuide.html')

diff --git a/nuttx/Documentation/NuttxPortingGuide.html b/nuttx/Documentation/NuttxPortingGuide.html
index a9bf7df8d..dec31beea 100644
--- a/nuttx/Documentation/NuttxPortingGuide.html
+++ b/nuttx/Documentation/NuttxPortingGuide.html
@@ -1805,6 +1805,7 @@ extern void up_ledoff(int led);
     Each SPI device driver must implement an instance of <code>struct spi_ops_s</code>.
     That structure defines a call table with the following methods:
     <ul>
+     <p><code>void lock(FAR struct spi_dev_s *dev);</code></p>
      <p><code>void select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, boolean selected);</code><br>
      <code>uint32 setfrequency(FAR struct spi_dev_s *dev, uint32 frequency);</code><br>
      <code>void setmode(FAR struct spi_dev_s *dev, enum spi_mode_e mode);</code><br>
-- 
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