=====Unipager with UDRC-II=====
Some notes for running [[https://github.com/rwth-afu/UniPager|Unipager]] with a [[http://nwdigitalradio.com/|UDRC-II]] on a Raspberry Pi 2B. Tested with an Icom IC-9100 and a Motorola GM360 UHF transceiver.

{{::unipager.png|}}


====Requirements====
  * Raspberry PI 2B
  * Power supply
  * Micro SD Card
  * UDRC-II Hat
  * Raspbian Buster lite
  * 6 pin DIN cable
  * 70cm band transceiver with 9600 baud data (6pin din) input

====Installation====

  * Write image to SD-Card<code>sudo dd if=2020-02-13-raspbian-buster-lite.img of=/dev/sdX bs=8M oflag=direct status=progress</code>
  * Configure hostname<code>
/etc/hosts
/etc/hostname</code>
  * Enable SSH<code>touch /boot/ssh</code>
  * Connect via ethernet (DHCP)
  * Update<code>apt update
apt upgrade</code>
  * Check UDRC-II hat connection<code>
# grep -a "" /proc/device-tree/hat/*
/proc/device-tree/hat/name:hat
/proc/device-tree/hat/product:Universal Digital Radio Controller II
/proc/device-tree/hat/product_id:0x0003
/proc/device-tree/hat/product_ver:0x0003
/proc/device-tree/hat/uuid:40dff019-4c58-48c6-87a4-12d1d0279515
/proc/device-tree/hat/vendor:NW Digital Radio</code>
  * Configure driver, disable internal audio<code>/boot/config.txt 
[all]
#dtoverlay=vc4-fkms-v3d
force_turbo=1
dtoverlay=
dtoverlay=udrc
#dtparam=audio=on</code>
  * Reboot
  * Check if UDRC is available<code>aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: udrc [udrc], device 0: bcm2835-i2s-tlv320aic32x4-hifi tlv320aic32x4-hifi-0 [bcm2835-i2s-tlv320aic32x4-hifi tlv320aic32x4-hifi-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
</code>
  * Configure 6pin DIN [[udrc-alsa-din6.sh]].<code>curl -L -s https://raw.githubusercontent.com/nwdigitalradio/udrc-tools/master/scripts/udrc-alsa-din6.sh | sudo sh</code>
  * Install [[https://github.com/rwth-afu/UniPager|Unipager]]
  * Open the webinterface [[http://<your-pi>:8073/]]
  * Configure callsign, authkey, see: [[https://hampager.de]]
  * Set device to Audio
  * Set GPIO to 4 (GPIO23 = WiringPi 4)
  * Set audio output level for 4,5kHz deviation (check with SDR) and store settings:<code>alsamixer
sudo alsactl store
</code>

{{tag>[hardware unipager UDRC UDRC-II]}}