07 2020 档案
摘要:shell 在shell中,可以使用export修改当前进程的环境变量: export PATH=.:$PATH 1 就可以将当前路径加入可执行文件查找路径中,这样你就不要敲命令的时候就不用敲路径了。 makefile export的作用是传递该变量到下级的Makefile中。 不放在目标的时候才会
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摘要:Repeated Start Condition A way to claim the bus During an I2C transfer there is often the need to first send a command and then read back an answer ri
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摘要:Q: What are the sysfs structures for Linux USB? A: For example the directory will have something like: # ls /sys/bus/usb/devices/ 1-0:1.0 1-1.3 1-1.3.
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