Differences

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--- en:c1_hardware_spidev [2016/04/01 13:38]
charles.park [Loading SPI driver]
+++ en:c1_hardware_spidev [2016/06/17 14:26] (current)
odroid [SPI-mode change test]
@@ Line 39: / Line 39: @@
 {{http://dn.odroid.com/wiki_image/a.png?500|SPIDEV-32bits-1Mhz}}
+===== SPI-mode change test =====
+<WRAP  left round important 100%>
+**Update**\\
+SPI mode works correctly only with kernel version 3.10.96-151 or higher\\
+</WRAP>\\
+\\
+spidev 32 bits per word, spi mode = 0 \\
+<code>
+$ sudo ./spidev_test -D /dev/spidev0.0 -s 1000000 -b 32
+</code>
+{{http://dn.odroid.com/wiki_image/spi_mode_0.png?500|SPIDEV-32bits-mode-0}}
+spidev 32 bits per word, spi mode = 1
+<code>
+$ sudo ./spidev_test -D /dev/spidev0.0 -s 1000000 -b 32 -H
+</code>
+{{http://dn.odroid.com/wiki_image/spi_mode_1.png?500|SPIDEV-32bits-mode-1}}
+spidev 32 bits per word, spi mode = 2
+<code>
+$ sudo ./spidev_test -D /dev/spidev0.0 -s 1000000 -b 32 -O
+</code>
+{{http://dn.odroid.com/wiki_image/spi_mode_2.png?500|SPIDEV-32bits-mode-2}}
+spidev 32 bits per word, spi mode = 3
+<code>
+$ sudo ./spidev_test -D /dev/spidev0.0 -s 1000000 -b 32 -H -O
+</code>
+{{http://dn.odroid.com/wiki_image/spi_mode_3.png?500|SPIDEV-32bits-mode-3}}
 ** spidev_test source code **