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Showing results for tags 'spi'.
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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!
