Usage: ./spidev_test [-DsbdlHOLC3vpNR24SI]
-D --device device to use (default /dev/spidev1.1)
-s --speed max speed (Hz)
-d --delay delay (usec)
-b --bpw bits per word
-i --input input data from a file (e.g. "test.bin")
-o --output output data to a file (e.g. "results.bin")
-l --loop loopback
-H --cpha clock phase
-O --cpol clock polarity
-L --lsb least significant bit first
-C --cs-high chip select active high
-3 --3wire SI/SO signals shared
-v --verbose Verbose (show tx buffer)
-p Send data (e.g. "1234\xde\xad")
-N --no-cs no chip select
-R --ready slave pulls low to pause
-2 --dual dual transfer
-4 --quad quad transfer
-8 --octal octal transfer
-S --size transfer size
-I --iter iterations
tina linux是全志基于linux内核深度定制的IoT系统,适配全志自己的芯片,会从全志客户服务平台释放SDK(open.allwllwinnertec.com)
部分芯片的tina linux系统及资料是免费释放的,在全志客户服务平台注册就能下载,如D1-H/D1s/V853。但是大部分需要与全志签订商务NDA后申请,平台上有申请流程,详见:open.allwinnertech.com