Differences

This shows you the differences between two versions of the page.

--- en:general_information:tutorial:spi [2015/08/17 11:19] – liedmann
+++ en:general_information:tutorial:spi [2022/08/04 15:02] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+~~NOCACHE~~
+~~NOTOC~~
 ===== SPI =====
 \\
@@ Line 5: / Line 7: @@
 SPI can be tested with **spidev_test** from the kernel sources.\\
 [[https://www.kernel.org/doc/Documentation/spi/spidev_test.c]]\\
-You will find **spidev_test** in our BSP under **/usr/bin/**.
+**spidev_test** is included by default in the BSP, you will find it under **/usr/bin/**.
 \\
 ==== Testing spidev 0.1 ====
-<wrap Round info 65%>spidev_test is a loopback test to use it on the starterkit please put a bridge between **X27_43 (SPI.MOSI)** and **X27_44 (SPI.MISO)**.</wrap>
+<wrap Round info 65%>spidev_test is a loopback test, to use it on the Starterkit put a bridge between the pins **X27_43 (SPI1.MOSI)** and **X27_44 (SPI1.MISO)**.</wrap>
 To run spidev with /dev/spi0.1 you need to specify the device with -D parameter
-<code>root@MBa6x:/usr/bin ./spidev_test -D /dev/spidev0.1</code>
+<code>
+root@MBa6x:cd /usr/bin
+root@MBa6x:/usr/bin ./spidev_test -D /dev/spidev0.1
+</code>
-**console output with open bridge:**
+++++console output with open bridge:|
 <code>
 root@MBa6x:/usr/bin ./spidev_test -D /dev/spidev0.1
@@ Line 29: / Line 35: @@
 FF FF
 </code>
+++++
-**console output with closed bridge:**
+++++ console output with closed bridge:|
 <code>
 root@MBa6x:/usr/bin ./spidev_test -D /dev/spidev0.1
@@ Line 45: / Line 51: @@
 F0 0D
 </code>
+++++
+==== Testing spidev 4.0 ====
+<wrap Round info 65%>spidev_test is a loopback test, to use it on the starterkit put a bridge between the pins **X28_51 (ECSPI5.MIS0)** and **X28_53 (ECSPI5.MOSI)**.</wrap>
+To run spidev with /dev/spi4.0 you need to specify the device with -D parameter
+<code>
+root@MBa6x:cd /usr/bin
+root@MBa6x:/usr/bin ./spidev_test -D /dev/spidev4.0
+</code>
+++++console output with open bridge:|
+<code>
+root@MBa6x:/usr/bin ./spidev_test -D /dev/spidev4.0
+spi mode: 0
+bits per word: 8
+max speed: 500000 Hz (500 KHz)
+FF FF FF FF FF FF
+FF FF FF FF FF FF
+FF FF FF FF FF FF
+FF FF FF FF FF FF
+FF FF FF FF FF FF
+FF FF FF FF FF FF
+FF FF
+</code>
+++++
+++++ console output with closed bridge:|
+<code>
+root@MBa6x:/usr/bin ./spidev_test -D /dev/spidev4.0
+spi mode: 0
+bits per word: 8
+max speed: 500000 Hz (500 KHz)
+FF FF FF FF FF FF
+00 00 00 00 95
+FF FF FF FF FF FF
+FF FF FF FF FF FF
+FF FF FF FF FF FF
+DE AD BE EF BA AD
+F0 0D
+</code>
+++++