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- Added doc/linux.html (multiple USDB devices, udev links) - Linked fhem.html and commandref.html to linux.html git-svn-id: https://svn.fhem.de/fhem/trunk@12 2b470e98-0d58-463d-a4d8-8e2adae1ed80
111 lines
4.2 KiB
HTML
111 lines
4.2 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>fhem.pl - Hints for GNU/Linux</title>
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</head>
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<body style="background-color: white;">
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<h2>fhem.pl - Hints for GNU/Linux</h2>
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<p><b><a name="onedevice">One device</a></b><br>
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If you connect one USB device (FHZ1000PC, FHZ1300PC, EM1010PC, WS300, ...)
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to your GNU/Linux server you can use the regular <i>ftdi_sio</i> kernel module.
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However, it may not recognize our device. Therefore you need to get the
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<i>vendor</i> and <i>product</i> codes:
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<code><br>
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# lsusb<br>
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...<br>
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Bus 002 Device 002: ID <b>0403</b>:<b>e0e8</b> Future Technology Devices International, Ltd <br>
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...<br>
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</code><br>
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Now you need to edit your <code>/etc/modprobe.conf</code> or
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<code>/etc/modprobe.conf.local</code> file (depending on your distribution).
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Add the following line to it:<br>
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<code><br>
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options ftdi_sio vendor=0x<b>0403</b> product=0x<b>e0e8</b><br>
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</code><br>
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Replace the vendor and product code with the output of the <i>lsusb</i> command.
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The you load the module using:<br>
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<code><br>
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# modprobe ftdi_sio<br>
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</code><br>
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<p><b><a name="multipledevices">Multiple devices</a></b><br>
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If you're using multiple USB devices (FHZ1000PC, FHZ1300PC, EM1010PC, WS300, ...)
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you cannot use the methode above. You need to modify the ftdi_sio kernel module
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to make it work. The following example was done with openSuSE 10.1:<br>
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You need to have the kernel-source-<i>version</i> RPM of your
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current kernel (see output of <code>uname -r</code>) installed.<br>
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<code><br>
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# cd /usr/src/linux<br>
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# make cloneconfig<br>
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# make modules_prepare<br>
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# cp /boot/symvers-2.6.*-default.gz /usr/src/linux<br>
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# mv symvers-2.6.*-default.gz Module.symvers.gz<br>
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# gunzip /usr/src/linux/Module.symvers.gz<br>
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# make modules_prepare<br>
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# cd drivers/usb/serial<br>
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</code>
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For the EM1010PC you (may) need to add the following line:
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<code><br>
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# vi ftdi_sio.h<br>
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...<br>
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#define FTDI_ELV_WS500_PID 0xE0E9 /* PC-Wetterstation (WS 500) */<br>
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<b>#define FTDI_ELV_EM1010PC_PID 0xE0EF /* EM 1010 PC */</b><br>
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</code><br>
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Now we need to uncomment some lines to enable all of our devices.
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<code><br>
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# vi ftdi_sio.c<br>
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...<br>
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{ USB_DEVICE(FTDI_VID, FTDI_ELV_WS300PC_PID) }, <br>
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{ USB_DEVICE(FTDI_VID, FTDI_ELV_FHZ1300PC_PID) },<br>
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{ USB_DEVICE(FTDI_VID, FTDI_ELV_WS500_PID) }, <br>
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{ USB_DEVICE(FTDI_VID, FTDI_ELV_EM1010PC_PID) },<br>
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...<br>
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</code><br>
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Remove the <b>/*</b> and <b>*/</b> of your devices and save the file.
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<code><br>
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# cd /usr/src/linux<br>
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# make modules<br>
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...</code> This may take a while. Go read a book, have lunch or ...<br>
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<code><br>
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# cd /lib/modules/<i>yourKernelVerion</i>/kernel/drivers/usb/serial<br>
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# cp ftdi_sio.ko ftdi_sio.ko_backup<br>
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# cp /usr/src/linux/drivers/usb/serial/ftdi_sio.ko .<br>
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</code><br>
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To make it become active you may need to stop applications (like fhem) who
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are using the /dev/ttyUSB device and unload the module and load it again.<br>
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<code><br>
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# rmmod ftdi_so<br>
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# modprobe ftdi_so<br>
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</code><br>
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You should now see multiple ttyUSB devices:
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<code><br>
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# ls -l /dev/ttyUSB*<br>
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crw-rw---- 1 root uucp 188, 0 2007-02-11 23:00 /dev/ttyUSB0<br>
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crw-rw---- 1 root uucp 188, 1 2007-02-11 23:00 /dev/ttyUSB1<br>
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</code><br>
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<p><b><a name="devicelinks">Device links</a></b><br>
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If you're using multiple USB devices (FHZ, EM, WS...) it might occur that the
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enumeration of the /dev/ttyUSB<i>n</i> numbers get mixed up if one of the
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device is missing or after a reboot.<br>
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Starting with kernel 2.6 the UDEV implements means for using virtual names
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instead of the bare numbers.<br>
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Edit the file <code>/etc/udev/rules.d/50-udev-default.rules</code>
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and append the following lines in the block labled as <i>serial devices</i>:
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<br>
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<code>
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KERNEL=="ttyUSB*", SYSFS{product}=="ELV FHZ 1300 PC", SYMLINK+="elv_fhz1300pc"<br>
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KERNEL=="ttyUSB*", SYSFS{product}=="ELV EM 1010 PC", SYMLINK+="elv_em1010pc"<br>
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</code><br>
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Now you need to reboot your box (unfortunalty) and once the system has come up
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again you can use the device paths <code><b>/dev/elv_fhz1300pc</b></code> or
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<code><b>/dev/elv_em1010pc</b></code> in your FHEM configuration file.
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</body>
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</html>
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