Problems Configuring SPDIF Output

[MrTwisterFister69]

Hey,

I really like this project! Great work! I'd love to build it myself, but I'm having trouble getting the SPDIF output to work. Here's my config from the web interface:

Daylight saving time offset: 1 hour
UTC offset: 1 hour
Time server: pool.ntp.org
GPIO settings:
    gpio_00: upper preset (set to 1)
    gpio_14: stop
    gpio_17: resume
    gpio_34: station (set to icecast.omroep.nl:80/radio1-bb-mp3)
Rotary encoder pins:
    CLK: 25
    DT: 26
    SW: 27
SPDIF pin: 2
Presets:
    Preset 00: http://icecast.ndr.de/ndr/njoy/live/mp3/128/stream.mp3 (N-Joy)
Tone settings: all set to 0
Volume: 100
Wi-Fi settings:
    Wi-Fi 00: /***
    Wi-Fi 01: SSID2/PASSWD2

Also, I'm wondering if it's possible to ditch the rotary encoder and just rely on buttons for control.

Thanks in advance, and sorry for my improvised English.

[Edzelf]

Are you sure you have defined "pin_i2s_spdif" in the config page of the web interface?
If you remove the definitions of "pin_enc_clk", "pin_enc_clk" and "pin_enc_clk" from the config page in the web interface, the rotary encoder is not activated.
The LED in the SPDIF transmitter should light up. You can make a simple "blink" program using the pin connected to the SPDIF transmitter to test it.
Alway show the serial debug output, so we can help to find the problem.

[MrTwisterFister69]

Is there a tutorial on how to use the Spdif support? My web interface configs look like this right now and i dont get any sound:
($)pin_i2s_bck = 5 # GPIO Pin number for I2S "BCK"
($)pin_i2s_din = 34 # GPIO Pin number for I2S "DIN"
($)pin_i2s_lck = 32 # GPIO Pin number for I2S "L(R)CK"

clk_dst = 1 # Offset during daylight saving time (hours)
clk_offset = 1 # Offset with respect to UTC in hours
clk_server = pool.ntp.org # Time server to be used

gpio_00 = uppreset = 1
gpio_12 = upvolume = 2
gpio_13 = downvolume = 2
gpio_14 = stop
gpio_17 = resume
gpio_34 = station = icecast.omroep.nl:80/radio1-bb-mp3

mqttbroker = none
mqttpasswd = none
mqttport = 1883
mqttprefix = none
mqttuser = none

pin_i2s_spdif = 5
pin_ir = 35 # GPIO Pin number for IR receiver VS1838B
pin_tft_cs = 15 # GPIO Pin number for TFT "CS"
pin_tft_dc = 2 # GPIO Pin number for TFT "DC"

preset = 1
preset_00 = 109.206.96.34:8100 # 0 - NAXI LOVE RADIO, Belgrade, Serbia
preset_01 = airspectrum.cdnstream1.com:8114/1648_128 # 1 - Easy Hits Florida 128k
preset_02 = stream.hitfm.de:9050/live # 2 - 89 HIT FM - Munichs Power Station, 128k
preset_03 = airspectrum.cdnstream1.com:8000/1261_192 # 3 - Magic Oldies Florida
preset_04 = airspectrum.cdnstream1.com:8008/1604_128 # 4 - Magic 60s Florida 60s Classic Rock
preset_05 = us1.internet-radio.com:8105 # 5 - Classic Rock Florida - SHE Radio
preset_06 = icecast.omroep.nl:80/radio1-bb-mp3 # 6 - Radio 1, NL, 192k
preset_07 = 205.164.62.15:10032 # 7 - 1.FM - GAIA, 64k
preset_08 = www.doowopradio.com:8000 # 8 - Doo-Wop Radio, 96k
preset_09 = server-27.stream-server.nl:8192/stream # 9 - 192 Radio Nederland, 320k

toneha = 0
tonehf = 0
tonela = 0
tonelf = 0

volume = 100

wifi_00 = /
wifi_01 = SSID2/PASSWD2

Maybe I am just making a dumb mistake, but I am very confused at the moment.

[Edzelf]

Read this. See chapter 1.3.

[yochiwarez]

Hi, I also haven't been able to get the SPDIF output to work, I've followed the guide to the letter. Please help

webconfig:

($)pin_enc_clk = 25                                     # GPIO Pin number for rotary encoder CLK
($)pin_enc_dt = 26                                     # GPIO Pin number for rotary encoder DT
($)pin_enc_sw = 27                                     # GPIO Pin number for rotary encoder SW
($)pin_ir = 35                                     # GPIO Pin number for IR receiver VS1838B
($)pin_sd_cs = 21                                     # GPIO Pin number for SD card CS
($)pin_tft_dc = 2                                      # GPIO Pin number for TFT DC
($)pin_vs_cs = 5                                      # GPIO Pin number for VS1053 CS
($)pin_vs_dcs = 16                                     # GPIO Pin number for VS1053 DCS
($)pin_vs_dreq = 4                                      # GPIO Pin number for VS1053 DREQ
#
clk_dst = 1
clk_offset = 1
clk_server = pool.ntp.org
#
gpio_00 = uppreset = 1
gpio_12 = upvolume = 2
gpio_13 = downvolume = 2
#
ir_40BF = upvolume = 2
ir_C03F = downvolume = 2
#
mqttbroker = none
mqttpasswd = none
mqttport = 1883
mqttprefix = none
mqttuser = none
#
pin_i2s_spdif = 15
#
preset = 0
preset_00 = relay.181.fm:8074                        #  0 - vibe of vegas
preset_01 = airspectrum.cdnstream1.com:8114/1648_128 #  1 - Easy Hits Florida 128k
preset_02 = us2.internet-radio.com:8050              #  2 - CLASSIC ROCK MIA WWW.SHERADIO.COM
preset_03 = airspectrum.cdnstream1.com:8000/1261_192 #  3 - Magic Oldies Florida
preset_04 = airspectrum.cdnstream1.com:8008/1604_128 #  4 - Magic 60s Florida 60s Classic Rock
preset_05 = us1.internet-radio.com:8105              #  5 - Classic Rock Florida - SHE Radio
preset_06 = icecast.omroep.nl:80/radio1-bb-mp3       #  6 - Radio 1, NL
preset_07 = 205.164.62.15:10032                      #  7 - 1.FM - GAIA, 64k
preset_08 = skonto.ls.lv:8002/mp3                    #  8 - Skonto 128k
preset_09 = 94.23.66.155:8106                        #  9 - *ILR CHILL and GROOVE
preset_10 = ihr/IHR_IEDM                             # 10 - iHeartRadio IHR_IEDM
preset_11 = ihr/IHR_TRAN                             # 11 - iHeartRadio IHR_TRAN
preset_12 = 109.206.96.34:8100                       # 12 - NAXI LOVE RADIO, Belgrade, Serbia
#
toneha = 0
tonehf = 0
tonela = 0
tonelf = 0
#
volume = 72
#
wifi_00 = ElPapuPro/******

config.h

//***************************************************************************************************
// config.h                                                                                         *
//***************************************************************************************************
// Configuration definition for your particular set-up.                                             *
//***************************************************************************************************
//
#ifndef CONFIG_H
  //#define NAME "ESP32-Radio"                              // Define name of the radio, also AP SSID,
                                                            // also namespace in NVS.
                                                            // Default is "ESP32-Radio"

  //#define SDCARD                                          // Experimental: For SD card support (reading MP3-files)

  //#define ETHERNET                                        // For wired Ethernet (WT32-ETH-01 or similar)

  #define FIXEDWIFI "ElPapuPro/*******"                     // Add a fixed SSID to the list (WiFi only)
  
  //#define ENABLEOTA                                       // OTA feature

  // Define (just one) type of MP3/AAC decoder
  //#define DEC_VS1053                                        // Hardware decoder for MP3, AAC, OGG
  //#define DEC_VS1003                                      // Hardware decoder for MP3 only
  //#define DEC_HELIX                                       // Software decoder for MP3, AAC. I2S output
  #define DEC_HELIX_SPDIF                                 // Toslink/Spdif output for MP3, AAC (experimental)
  //#define DEC_HELIX_AI                                    // Software decoder for AI Audio kit (AC101)
  //#define DEC_HELIX_INT                                   // Software decoder for MP3, AAC. DAC output
                                                            // Needs platform = [email protected] !!!!

  // Define (just one) type of display.  See documentation.
  //#define BLUETFT                                         // Works also for RED TFT 128x160
  //#define ST7789                                          // 240x240 TFT (SPI)
  //#define OLED1306                                        // 64x128 I2C OLED SSD1306
  //#define OLED1309                                        // 64x128 I2C OLED SSD1309
  //#define OLED1106                                        // 64x128 I2C OLED SH1106
  #define DUMMYTFT                                          // Dummy display
  //#define LCD1602I2C                                      // LCD 1602 display with I2C backpack
  //#define LCD2004I2C                                      // LCD 2004 display with I2C backpack
  //#define ILI9341                                         // ILI9341 240*320
  //#define NEXTION                                         // Nextion display
  //

  // Define ZIPPYB5 if a ZIPPY B5 Side Switch is used instead of a rotary switch
  //#define ZIPPYB5

  // End of configuration parameters.
  #define CONFIG_H
#endif

serial output:

[  9328][V][WiFiGeneric.cpp:384] _arduino_event_cb(): SCAN Done: ID: 128, Status: 0, Results: 8
[  9337][D][WiFiGeneric.cpp:1040] _eventCallback(): Arduino Event: 1 - SCAN_DONE
[  9345][I][WiFiMulti.cpp:114] run(): [WIFI] scan done
[  9350][I][WiFiMulti.cpp:119] run(): [WIFI] 8 networks found
[  9356][D][WiFiMulti.cpp:149] run():  --->   0: [6][74:4D:28:E4:2A:7B] ElPapuPro (-35) *
[  9364][D][WiFiMulti.cpp:149] run():  --->   1: [6][74:4D:28:E4:26:D7] ElPapuPro (-69) *
[  9372][D][WiFiMulti.cpp:149] run():  --->   2: [6][74:4D:28:E4:2A:25] ElPapuPro (-76) *
[  9380][D][WiFiMulti.cpp:149] run():  --->   3: [6][74:4D:28:E4:26:FE] ElPapuPro (-77) *
[  9389][D][WiFiMulti.cpp:151] run():        4: [3][40:3F:8C:96:DD:02] TP-Link_AP_DD02 (-83) *
[  9397][D][WiFiMulti.cpp:151] run():        5: [1][A4:39:B3:89:27:62] sc-cef0_Plus (-85) *
[  9406][D][WiFiMulti.cpp:151] run():        6: [5][DC:9F:DB:AC:1F:8D] RED-KUKA (-85) *
[  9414][D][WiFiMulti.cpp:151] run():        7: [11][E4:BF:FA:D7:79:99] FRANCISCO-2.4GHZ (-86) *
[  9423][I][WiFiMulti.cpp:160] run(): [WIFI] Connecting BSSID: 74:4D:28:E4:2A:7B SSID: ElPapuPro Channel: 6 (-35)
[  9434][V][WiFiGeneric.cpp:97] set_esp_interface_ip(): Configuring Station static IP: 0.0.0.0, MASK: 0.0.0.0, GW: 0.0.0.0
[  9693][V][WiFiGeneric.cpp:356] _arduino_event_cb(): STA Connected: SSID: ElPapuPro, BSSID: 74:4d:28:e4:2a:7b, Channel: 6, Auth: WPA2_PSK
[  9706][D][WiFiGeneric.cpp:1040] _eventCallback(): Arduino Event: 4 - STA_CONNECTED
[ 10255][V][WiFiGeneric.cpp:370] _arduino_event_cb(): STA Got New IP:192.168.3.91
[ 10263][D][WiFiGeneric.cpp:1040] _eventCallback(): Arduino Event: 7 - STA_GOT_IP
[ 10270][D][WiFiGeneric.cpp:1103] _eventCallback(): STA IP: 192.168.3.91, MASK: 255.255.255.0, GW: 192.168.3.1
[ 10280][I][WiFiMulti.cpp:174] run(): [WIFI] Connecting done.
[ 10286][D][WiFiMulti.cpp:175] run(): [WIFI] SSID: ElPapuPro
[ 10291][D][WiFiMulti.cpp:176] run(): [WIFI] IP: 192.168.3.91
[ 10297][D][WiFiMulti.cpp:177] run(): [WIFI] MAC: 74:4D:28:E4:2A:7B
[ 10303][D][WiFiMulti.cpp:178] run(): [WIFI] Channel: 6
[ 10309][I][main.cpp:1569] connectwifi(): [main] SSID = ElPapuPro
[ 10315][I][main.cpp:1573] connectwifi(): [main] IP = 192.168.3.91
[ 10321][I][main.cpp:2590] setup(): [main] Start web server
[ 10328][I][main.cpp:2601] setup(): [main] Network found. Starting clients
[ 10341][I][main.cpp:2635] setup(): [main] MDNS responder started
[ 11350][I][main.cpp:2680] setup(): [main] Rotary encoder is disabled (-1/-1/-1)
[ 11357][I][main.cpp:4251] gettime(): [main] Sync TOD
[ 14713][I][main.cpp:4264] gettime(): [main] TOD synced
[ 14718][I][main.cpp:4406] playtask(): [main] Starting I2S playtask..
[ 14728][I][main.cpp:4439] playtask(): [main] Output to SPDIF, pin 15
[ 14820][I][main.cpp:895] nextPreset(): [main] nextPreset is 0
[ 14827][I][main.cpp:3285] radiofuncs(): [main] Radiofuncs cmd is 1
[ 14833][I][main.cpp:4482] playtask(): [main] Playtask stop song
[ 14835][I][main.cpp:1330] connecttohost(): [main] Connect to host relay.181.fm:8074
[ 15018][I][main.cpp:2406] onConnect(): [main] Connected to host at 216.235.80.84 on port 8074
[ 15050][I][main.cpp:1391] connecttohost(): [main] send GET command
[ 15058][I][helixfuncs.h:85] player_setVolume(): [helixfuncs] Volume set to 72
[ 15674][I][main.cpp:3534] handlebyte_ch(): [main] Switch to HEADER
[ 15681][I][main.cpp:3555] handlebyte_ch(): [main] Headerline: X-Loudness: -10.706655
[ 15689][I][main.cpp:3555] handlebyte_ch(): [main] Headerline: icy-description: 181.FM The Vibe of Vegas
[ 15698][I][main.cpp:3555] handlebyte_ch(): [main] Headerline: icy-pub: 1
[ 15705][I][main.cpp:3555] handlebyte_ch(): [main] Headerline: icy-audio-info: ice-samplerate=44100;ice-bitrate=128;ice-channels=2
[ 15717][I][main.cpp:3555] handlebyte_ch(): [main] Headerline: icy-url: http:/181.fm
[ 15725][I][main.cpp:3555] handlebyte_ch(): [main] Headerline: icy-name: 181.FM The Vibe of Vegas
[ 15734][I][main.cpp:3555] handlebyte_ch(): [main] Headerline: Content-Type: audio/mpeg
[ 15742][I][main.cpp:3555] handlebyte_ch(): [main] Headerline: icy-metaint: 16000
[ 15749][I][main.cpp:3555] handlebyte_ch(): [main] Headerline: icy-genre: Easy Listening
[ 15757][I][main.cpp:3555] handlebyte_ch(): [main] Headerline: Instance-id: b4d017bb3d2a776a26ae2b10da8dc0cc
[ 15767][I][main.cpp:3555] handlebyte_ch(): [main] Headerline: Server: Streaming Server 9.0.7
[ 15776][I][main.cpp:3555] handlebyte_ch(): [main] Headerline: icy-br: 128
[ 15783][I][main.cpp:3555] handlebyte_ch(): [main] Headerline: Expires: Mon, 26 Jul 1997 05:00:00 GMT
[ 15792][I][main.cpp:3555] handlebyte_ch(): [main] Headerline: Pragma: no-cache
[ 15799][I][main.cpp:3555] handlebyte_ch(): [main] Headerline: Cache-Control: no-cache
[ 15807][I][main.cpp:3555] handlebyte_ch(): [main] Headerline: Connection: close
[ 15814][I][main.cpp:3625] handlebyte_ch(): [main] Switch to DATA, bitrate is 128 kbps, metaint is 16000
[ 15824][I][main.cpp:4474] playtask(): [main] Playtask start song
[ 15830][I][helixfuncs.h:114] helixInit(): [helixfuncs] helixInit called for audio/mpeg
[ 15915][I][helixfuncs.h:233] playChunk(): [helixfuncs] Sync found at 0x0000
[ 15938][I][helixfuncs.h:286] playChunk(): [helixfuncs] Bitrate     is 128000
[ 15945][I][helixfuncs.h:287] playChunk(): [helixfuncs] Samprate    is 44100
[ 15952][I][helixfuncs.h:288] playChunk(): [helixfuncs] Channels    is 2
[ 15959][I][helixfuncs.h:289] playChunk(): [helixfuncs] Bitpersamp  is 16
[ 15966][I][helixfuncs.h:290] playChunk(): [helixfuncs] Outputsamps is 2304
[ 16554][I][main.cpp:1224] showstreamtitle(): [main] Streamtitle found, 53 bytes
[ 16561][I][main.cpp:1225] showstreamtitle(): [main] StreamTitle='Dynoro & Gigi D'Agostino - In My Mind ';
[ 18389][W][AsyncTCP.cpp:950] _poll(): rx timeout 4
[ 18913][W][AsyncTCP.cpp:950] _poll(): rx timeout 4
[ 19451][W][AsyncTCP.cpp:950] _poll(): rx timeout 4
[ 20526][W][AsyncTCP.cpp:930] _poll(): pcb is NULL

[Edzelf]

Try to make a "blink" program for GPIO 15 and check if the red LED in the led is blinking.

[yochiwarez]

thank you for responding.
https://github.com/Edzelf/ESP32Radio-V2/assets/17991421/a24ab747-9fcf-4993-8e8c-ee110d74e232

[fscii]

I also have no issue using a blink sketch on gpio 15. I have same config.h as shown by other user above (except wifi credentials). I also have no audio from SPDIF. However, using this example from another library:
https://github.com/pschatzmann/arduino-audio-tools/tree/main/examples/examples-communication/a2dp/streams-a2dp-spdif

(simply changing proper pin to 15 for the ESP32-Radio hardware boards I got from PCBWay -- it does work.
So hardware isn't wrong and pin 15 is functioning properly.

Any solution yet?

[Edzelf]

I was able to reproduce the bug. I am working on it....
Found the bug. The modified files (main.cpp and helixfunc.h) are now in the repositry.

[dreamlayers]

This should probably be closed. The current version works with ESP32-WROOM-32U and a Neoteck NTK004a SPDIF DAC using optical input. Seems these fixes were probably in the Fri Jul 5 2024 commits. Setting of pin_config.bck_io_num and pin_config.ws_io_num from those commits was later removed, showing that I2S data output can function even when the clock outputs are not assigned to pins.