Xenomai-无法打开设备

Question

I write an user space application.When I run fd = rt_dev_open("/dev/ttyACM0"); , I get an error. It says that no such device . But when I use POSIX open() functions, it works fine. How can I use this file xenoami rtdm module?

Answer 1

To run functions real time, we need a rtdm driver. If we don't have, we can't use functions of real time.