Primeiramente gostaria de salientar que não sou o autor principal do conteúdo deste artigo. A minha intenção é de mostrar o que outros autores tem realizado (referenciando links para o conteúdo original) neste blog até como um guia pessoal para uso próprio e ainda compartilhar minhas anotações e pequenas modificações que realizo no conteúdo, desejando que possa ajudar mais alguém em algum lugar.
add lines at BOOT/config.txt #PiFi DiGi+ dtoverlay=hifiberry-digi dtoverlay=lirc-rpi:gpio_in_pin=26 for debuging add: dtoverlay=lirc-rpi,gpio_in_pin=26,debug=on link: https://support.hifiberry.com/hc/en-us/articles/205376201-GPIO-usage-of-HiFiBerry-boards HiFiBerry DAC+, Digi+ and Amp+GPIO2-3 (pins 3 and 5) are used by our products for configuration. If you are experienced with I2C, you might add other slave devices. If you a a novice, we don’t recommend this at all. On the HiFiBerry Digi+, GPIO16 is also reserved. GPIO PINS USED BY DIGI+# GPIO FUNCTION PULL # —- ——– —- setgpio 2 ALT0 UP # I2C communication DAC chip setgpio 3 ALT0 UP # I2C communication DAC chip setgpio 6 INPUT DEFAULT # do not use, reserved for Master clock setgpio 18 ALT0 DEFAULT # I2S setgpio 19 ALT0 DEFAULT # I2S setgpio 20 ALT0 DEFAULT # I2S setgpio 21 ALT0 DEFAULT # I2S That means, GPIO 2,3,6 and 18-21 are used. Note that this are the GPIO numbers, NOT the pin numbers. These pins are used for the Digi+ and the DAC+ link: https://www.aliexpress.com/item/Raspberry-Pi-HIFI-DiGi-Digital-Sound-Card-I2S-SPDIF-expansion-board-Digital-Chip-for-Raspberry-Pi/32699808174.html?spm=2114.13010608.0.0.HpPgrU Raspberry Pi HIFI DiGi Digital Sound Card I2S SPDIF expansion board Digital Chip for Raspberry Pi 2/B+/A+ support Raspberry pi 3  Product Description
This is a response to the raspberry pi B+/A+ design special HIFI Digi+ expansion board (PiFi Digi+),use Wolfson company high end digital chip (WM8804G),use I2S interface, not USB interface;After using this extension plate the user can match the audio playback system (such as: volumio, Xbmc system) to build their own network HIFI player;Expansion board provides fiber (S/PDIF) and coaxial (RCA) two output interface convenient external amplifiers and other equipment. With it you can get rid of PC power, turn off the slow, power supply noise and so on troubled....
Function introduction:
1 digital chip uses the Wolfson company high-end WM8804G chip, adopting I2S interface;Support 16 to 24 bit audio data formats; distortion and dynamic is very ideal, support the tall sampling rate of 192kHz, the advanced technology shake reduction can be intrinsic jitter control in 50ps RMS, high degree of reduction. 2.The output port use optical and coaxial twointerface output , convenient for the user to connect an external power amplifier 3 support hardware mode to control the volume (I2C interface) 4.The power supply adopts Raspberry PI supply, no need external power supply;and use type filter power supply design ,to reduce the interference of power supply effectively. 5 using I2S interface direct digital output, high reduction degree,not USB interface DAC methods, unoccupied raspberry pi other extended GPIO 6.provide the power indicator light, easy to observe the expansion board state 7. the PCB board adopt gold plating process,arc wire (high-end HIFI DAC both adopt the arc line),better ensure the signal Impedance continuity, reduce the signal reflection and refraction. 8 Good sound depends on real materials,the optical fiber interface adopts imported HIFI grade high quality fiber seat,coaxial interface using Pluse import audio isolation transformer providing good digital audio at the same time good protection of your audio device and card!!! 9. integrated infrared receiving function, in the absence of network, more convenient to control the playback Volumio software parameters: -FLAC, WAV, MP3, AAC, ALAC, PLS support -Music libraries on Samba, NFS and USB drives -Webradios support out of the box -Control it via integrated Webui with PC, Smartphone, Tablet -Airplay capability -Ramplay Support -DSD Native Playback -Multiroom Playback via Android App -Output playback device Selection -Audio out I2S (from Raspberry pi's P5) -Wireless Network configuration -Various resampling options, up to 24bit/192kHz
Package Included: 1 pcs Digital Sound Card(not including raspberry pi 2/3/B+) |
