Jonas Witt wrote: > > Hi everybody, > > > > > > > > i am having a problem with the serial port driver in xenomai for a while > > now.. > > > > > > > > I have tried different programs like > > http://www.captain.at/xenomai-serial-port-example.php > > > > > > > > I have also changed the code of cross-link.c to use the same port for > > writing and reading (as i only have one serial port in my computer). Opening > > a port and writing the configuration seems to work form e.. also writing. > > The Problem stems from the call to: > > > > > > > > rt_dev_ioctl(read_fd, RTSER_RTIOC_WAIT_EVENT, &rx_event); > > > > > > > > which keeps waiting forever and never receives an interrupt. I tried a > > self-made loopback-adapter and a sensor with a serial interface (so at > least > > _something_ should come back). Nothing worked. The serial port is working > > fine with the linux-driver, though. I already figured that the calls to > > rt_dev_write do not work from non-xenomai-tasks (which should really be > > emphasized in the documentation..) > > > > Some suggestions: > > o check the hardware configuration (ie. the module parameters of > xeno_16550A) twice, you can easily get them wrong > > o check /proc/xenomai/irq for any progress on transmission as well as > on reception. If there is nothing happen on tx, the IRQ number may be > wrong, if there is nothing on rx, your port configuration might be > broken. > > o try the driver from trunk, it can handle PnP-related issues (hardware > gets powered off when Linux driver is removed) > > Jan
Thanks for the fast reply! I am using the following kernel parameters: kernel /boot/vmlinuz-2.6.19-ipipe root=/dev/sda1 ro 8250.nr_uarts=0 xeno_16550A.ioaddr=0x3f8 xeno_16550A.irq=4 I got these settings from setserial prior to disabling the kernel-driver. To be honest i don't know how to 'check' /proc/xenomai/irq for progress. I took a look at the folder prior to and while running my modified cross-link-code but irq is an empty file in both cases. Is there some special trick/function to handle the files in the proc-folder? To the last point.. so there is an updated version of the driver available? I think i will try that one.. is it just a question of executing 'make' and modprobing or are there more actions involved? Best regards, Jonas _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
