![Image of DABPi+ v11 PCB] (https://github.com/elmo2k3/dabpi_ctl/blob/master/doc/pics/dabpi+_v11.jpg) DABPi+ for Raspberry Pi A+/B+ versions. Pi2 not tested yet. ![Image of DABPi v1 PCB] (https://github.com/elmo2k3/dabpi_ctl/blob/master/doc/pics/dabpi_v1.jpg) DABPi for older Raspberry Pi A/B versions.
12.4.2015 Works on Pi2 now. New Kernel 3.18.11-v7+ included for Pi2.
!!! Firmware files removed due to license issues !!!
This project is beta. A lot of features are still missing.
You need a RPi that has the option to mount the I2S extension header. ![Image of RPi with soldered I2S extension header] (https://github.com/elmo2k3/dabpi_ctl/blob/master/doc/pics/IMG_0292.JPG)
Get the firmware package for Si4688 from Silabs.
Be sure to enable SPI in raspi-config.
Install wiringPi library. See http://wiringpi.com/download-and-install/
To get the audio you need to install a new kernel. It can be compiled from here https://github.com/elmo2k3/linux or use the precompiled image. For the precompiled binarys, see the Install section.
![Image of RPi B+ with additional cables] (https://github.com/elmo2k3/dabpi_ctl/blob/master/doc/pics/a_b_plus.jpg)
Connect P5 header pins 3,4,5 to GPIO header pins 12,35,38.
There is a very simple install script for a fresh raspian now (where there is nothing to be damaged).
wget https://github.com/elmo2k3/dabpi_ctl/raw/master/install_on_fresh_raspbian.sh
chmod a+x install_on_fresh_raspbian.sh
./install_on_fresh_raspbian.shThis will install the commandline tool to /home/pi/dabpi_ctl
Unpack the firmware files (get it from silabs or ask me) into /home/pi/dabpi_ctl/firmware
Get and compile the source code:
git clone https://github.com/elmo2k3/dabpi_ctl
cd dabpi_ctl
makeIf you want to use the precompiled kernel, it can be found in the kernel/ directory.
sudo cp kernel/Image /boot/kernel.img
sudo rm -rf /lib/modules
sudo rm -rf /lib/firmware
sudo tar -C / -xvzf kernel/lib.tar.gzEdit /etc/modules
bcm2708_dmaengine
snd-bcm2835After a reboot load the module.
sudo modprobe snd-soc-rpi-dabpiYou should see this in the kernel log:
pi@raspberrypi ~/dabpi_ctl $ dmesg | tail -n1
[ 2435.067966] snd-dabpi snd-dabpi.0: si468x-hifi <-> bcm2708-i2s.0 mapping ok
pi@raspberrypi ~/dabpi_ctl $Run dabpi_ctl:
[bjoern@x200 user_program]$ ./dabpi_ctl
usage: ./dabpi_ctl [-a|-b]
-a init DAB mode
-b init fm mode
-c frequency tune frequency in FM mode
-d fm status
-e dab status
-f service start service of dab service list
-g get dab service list
-i channel tune to channel in dab frequency list
-j region set frequency list
0 Baden-Wuertemberg
1 Bayern
2 Berlin-Brandenburg
3 Bremen
4 Hamburg
5 Hessen
6 Mecklenburg-Vorpommern
7 Niedersachsen
8 Nordrhein-Westfalen
9 Rheinland-Pfalz
10 Saarland
11 Sachsen
12 Sachsen-Anhalt
13 Schleswig-Holstein
14 Thueringen
15 Suedtirol (Italien)
16 Schweiz
-k region scan frequency list
-l up|down fm seek next station
-m fm rds status
-n dab get audio info
-o dab get subchannel info
-s get sys state (fm,dab,am...)
-h this helpTo test audio output, redirect it from capture to playback device:
alsaloop -C hw:1,0Stream audio to another linux machine over ssh:
ssh pi@PI-IP-ADDRESS 'arecord -D hw:1,0 -f dat -' | aplay -f dat -Enter fm mode:
pi@raspberrypi ~/dabpi_ctl $ sudo ./dabpi_ctl -b
si46xx_init_mode_fm()
si46xx_get_sys_state answer: 800000c001ff
si46xx_get_part_info answer: 800000c0000000005012000000005012000000000100
[...]
si46xx_fm_tune_freq(98500)
808000c0
pi@raspberrypi ~/dabpi_ctl $Tune to radio station 106.700MHz:
pi@raspberrypi ~/dabpi_ctl $ sudo ./dabpi_ctl -c 106700
si46xx_fm_tune_freq(106700)
808000c0
pi@raspberrypi ~/dabpi_ctl $Enter DAB mode and scan all channels in the list for NRW:
pi@raspberrypi ~/dabpi_ctl $ sudo ./dabpi_ctl -a -k 8
si46xx_init_mode_dab()
[...]
si46xx_dab_tune_freq(0): 818000c0
si46xx_dab_digrad_status(): Channel 0: ACQ: 1 RSSI: 45 SNR: -10 Name: DR Deutschland
si46xx_dab_tune_freq(1): 818000c0
si46xx_dab_digrad_status(): Channel 1: ACQ: 1 RSSI: 41 SNR: -10 Name: Radio fuer NRW
pi@raspberrypi ~/dabpi_ctl $Select DAB channel:
pi@raspberrypi ~/dabpi_ctl $ sudo ./dabpi_ctl -i 1
si46xx_dab_tune_freq(0): 818000c0
pi@raspberrypi ~/dabpi_ctl $Get ensemble information:
pi@raspberrypi ~/dabpi_ctl $ sudo ./dabpi_ctl -g
si46xx_dab_get_digital_service_list()
List size: 370
List version: 227
Services: 13
Num: 0 Service ID: e0d01005 Service Name: WDR-INFO Component ID: 49162
Component ID: 49162
Num: 1 Service ID: 109d Service Name: Domradio Component ID: 12
Component ID: 0
Num: 2 Service ID: e0d01006 Service Name: WDR-TPEG Component ID: 49163
Component ID: 0
Num: 3 Service ID: d394 Service Name: WDR 4 Component ID: 14
Component ID: 0
Num: 4 Service ID: df92 Service Name: VERA Component ID: 8
Component ID: 0
Num: 5 Service ID: d391 Service Name: 1LIVE Component ID: 1
Component ID: 0
Num: 6 Service ID: d395 Service Name: WDR 5 Component ID: 4
Component ID: 0
Num: 7 Service ID: d496 Service Name: FUNKHAUS EUROPA Component ID: 5
Component ID: 0
Num: 8 Service ID: e0d01004 Service Name: WDR-EPG Component ID: 49161
Component ID: 0
Num: 9 Service ID: df95 Service Name: KinderRadioKanal Component ID: 2
Component ID: 0
Num: 10 Service ID: df91 Service Name: 1LIVE diggi Component ID: 3
Component ID: 0
Num: 11 Service ID: 1462 Service Name: RADIO IMPALA Component ID: 13
Component ID: 0
Num: 12 Service ID: d392 Service Name: WDR 2 Component ID: 7
Component ID: 0
pi@raspberrypi ~/dabpi_ctl $Start one of the services in ensemble:
pi@raspberrypi ~/dabpi_ctl $ sudo ./dabpi_ctl -f 5
si46xx_dab_get_digital_service_list()
List size: 370
List version: 227
Services: 13
Num: 0 Service ID: e0d01005 Service Name: WDR-INFO Component ID: 49162
Component ID: 49162
[...]
Starting service 1LIVE d391 1
pi@raspberrypi ~/dabpi_ctl $