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en:general_information:tutorial:spi [2015/08/17 11:23] – liedmannen:general_information:tutorial:spi [2017/06/22 11:24] – liedmann
Line 1: Line 1:
 +~~NOCACHE~~
 +~~NOTOC~~
 ===== SPI ===== ===== SPI =====
 \\ \\
Line 9: Line 11:
 ==== Testing spidev 0.1 ==== ==== 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 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> <code>
 root@MBa6x:/usr/bin ./spidev_test -D /dev/spidev0.1 root@MBa6x:/usr/bin ./spidev_test -D /dev/spidev0.1
Line 29: Line 35:
 FF FF  FF FF 
 </code> </code>
- +++++ 
-**console output with closed bridge:** +++++ console output with closed bridge:| 
 <code> <code>
 root@MBa6x:/usr/bin ./spidev_test -D /dev/spidev0.1 root@MBa6x:/usr/bin ./spidev_test -D /dev/spidev0.1
Line 45: Line 51:
 F0 0D F0 0D
 </code> </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
 +40 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>
 +++++
  • Last modified: 2022/08/04 15:02