Differences

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--- tutorial-packet-on-pi [2024/11/17 03:53] – kc2ihx
+++ tutorial-packet-on-pi [2025/01/12 18:56] (current) – kc2ihx
@@ Line 172: / Line 172: @@
 </code>
-When you're done, you should run ''sudo ldconfig ~/.local/bin/'' to register the shared libraries created by Hamlib.
+When you're done, or anytime after you install libraries via your package manager (e.g. ``apt install``) you should run ''sudo ldconfig ~/.local/bin/'' to register the shared libraries created by Hamlib. [[https://groups.io/g/KM4ACK-Pi/topic/hamlib_4_5_4_symbol_lookup/97067606|(source)]]
 ===== QtTermTCP Desktop/Menu Icon =====
@@ Line 195: / Line 195: @@
 </code>
-//put rest of audio config info here//
+Next we'll configure ALSA -- despite the jokes on the Internet, Linux audio isn't //that bad// for a simple case like ours.  That said, you’ll need to do some experimenting here but it shouldn’t be all that different from what we have below. You’ll need to know the sample rates supported by your device though. If you poke around in ''/proc/asound/'' you’ll find your card or you can run 'arecord -l' and 'aplay -l' to get a list of devices.
+For example, run ''cat /proc/asound/card3/stream0'':
+<code>
+Burr-Brown from TI USB Audio CODEC at usb-0000:01:00.0-1.3.2, full speed : USB Audio
+Playback:
+  Status: Running
+    Interface = 1
+    Altset = 1
+    Packet Size = 192
+    Momentary freq = 48000 Hz (0x30.0000)
+  Interface 1
+    Altset 1
+    Format: S16_LE
+    Channels: 2
+    Endpoint: 0x02 (2 OUT) (ADAPTIVE)
+    Rates: 32000, 44100, 48000
+    Bits: 16
+    Channel map: FL FR
+</code>
+This is how you can set the default index for your USB audio card to force it to a consistent reboot safe value for the ALSA configuration. With only one USB audio device (the rig audio interface) this works well.
+Edit ''/etc/modprobe.d/alsa-base.conf'' to add:
+<code>
+options snd_usb_audio index=3
+</code>
+Edit your ''/etc/asound.conf'' file to add a hardware alias to this device.
+<code>
+pcm.scu {
+    type hw
+    card 3
+    device 0
+    rate 44100
+}
+</code>
 ====== rigctld for CAT/CIV ======
@@ Line 292: / Line 329: @@
 </code>
-From there we want to grab some unique information to help identify this device as our transceiver and create a ''udev.rules''
+From there we want to grab some unique information to help identify this device as our transceiver and create a ''udev'' rules file for the device that'll give it a meaningful and consistent name.
-<code>
+Add some variation of the following to a file in ''/etc/udev/rules.d/'' such as this example called ''80-yaesu-scu17.rules'', using information about the device from ''udevinfo'' above:
+<code>
 ENV{MAJOR}!="?*", GOTO="yaesucat_rules_end"
 SUBSYSTEMS=="usb-serial", GOTO="yaesucat_usb_rules"
@@ Line 307: / Line 345: @@
 LABEL="yaesucat_rules_end"
 </code>
+After creating the file, run ''sudo udevadm control --reload'' to create a new device called ''/dev/yaesucat''.
+====== What's Next? ======
+After following this tutorial you should have a 'reboot safe' hardware configuration, making it easier to configure various amateur radio applications for use with FARPN.
+From here, you should configure QtTermTCP or another packet client and try connecting to a node!