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Showing results for tags 'spi'.
Found 3 results
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I am using the Tinker 2S board and am unable to use SPI5, as it always returns junk values. However, the same SPI slave works correctly with SPI1. What could be the issue?
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Hi, I am following the URL below to start up SPI with WiringPi library. I can see spidev in /dev on my TinkerBoard2S. Therefore, I believe the spi settings are reflected at boot time. linaro@linaro-alip:~/Desktop/CSampleCode/spiSpeed$ ls /dev/spidev* /dev/spidev1.0 /dev/spidev5.0 When I run the sample code, I get an error "Unble to open SPI device". Can you please tell me the cause and countermeasure? linaro@linaro-alip:~$ cd /home/linaro/Desktop/CSampleCode/spiSpeed/ linaro@linaro-alip:~/Desktop/CSampleCode/spiSpeed$ sudo ./spiSpeed +-------+--------+----------+----------+-----------+------------+ | MHz | Size | mS/Trans | TpS | Mb/Sec | Latency mS | +-------+--------+----------+----------+-----------+------------+ Unable to open SPI device: No such file or directory Board:TinkerBoard2S Linux version:4.4.194 Best regards,
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Hello! I want to change the SPI buffer size from 4096 to a greater value. I tried to put spidev.bufsiz=65536 in /boot/config.txt but it is not working. Can someone to help me to set buffer size to a larger size? Thanks!
