Linking error Seeed Studio Xiao ESP32C3 and DFPlayer

ESPHome
1

I have a Seeed Studio Xiao ESP32-C3 that I want to connect to a DFplayer mini as part of a bigger project. Just testing the DFPlayer component, I can successfully compile the project as long as I leave out any use of ANY lambda in the api service calls to control the DFPlayer.

This an extract from the failed install log

...
Archiving .pioenvs/aa-test/lib47c/libnoise-c.a
Archiving .pioenvs/aa-test/lib2b5/libsodium.a
Linking .pioenvs/aa-test/firmware.elf
/data/cache/platformio/packages/toolchain-riscv32-esp/bin/../lib/gcc/riscv32-esp-elf/8.4.0/../../../../riscv32-esp-elf/bin/ld: .pioenvs/aa-test/src/main.o: in function `esphome::api::APINoiseContext::set_psk(std::array<unsigned char, 32u>)':
/data/build/aa-test/src/esphome/components/api/api_noise_context.h:14: undefined reference to `long esphome::api::get_execute_arg_value<long>(esphome::api::ExecuteServiceArgument const&)'
/data/cache/platformio/packages/toolchain-riscv32-esp/bin/../lib/gcc/riscv32-esp-elf/8.4.0/../../../../riscv32-esp-elf/bin/ld: .pioenvs/aa-test/src/main.o: in function `esphome::api::ListEntitiesServicesArgument::ListEntitiesServicesArgument()':
/data/build/aa-test/src/esphome/components/api/api_pb2.h:847: undefined reference to `esphome::api::enums::ServiceArgType esphome::api::to_service_arg_type<long>()'
collect2: error: ld returned 1 exit status
*** [.pioenvs/aa-test/firmware.elf] Error 1
...
========================= [FAILED] Took 66.04 seconds =========================

In the ESPHome logs I get this

...
2023-10-30 22:31:21,590 INFO 304 GET /devices (0.0.0.0) 6.13ms
2023-10-30 22:31:25,414 INFO 200 GET /edit?configuration=aa-test.yaml (0.0.0.0) 1.97ms
2023-10-30 22:31:25,492 INFO 200 GET /static/js/esphome/monaco-editor/esm/vs/editor/editor.worker.js (0.0.0.0) 1.85ms
2023-10-30 22:31:25,503 INFO 101 GET /ace (0.0.0.0) 1.23ms
2023-10-30 22:31:25,519 INFO Running command 'esphome --dashboard -q vscode --ace /config/esphome'
2023-10-30 22:31:25,528 INFO 200 GET /static/js/esphome/c.5cd5d307.js (0.0.0.0) 1.29ms
2023-10-30 22:31:32,738 INFO 200 GET /static/schema/substitutions.json (0.0.0.0) 1.77ms
2023-10-30 22:35:05,923 INFO 200 GET /devices (0.0.0.0) 6.47ms
...

My current stripped down test yaml is

substitutions:
  name: "aa-test"
  friendly_name: "AA Test"
  uart_tx_pin: GPIO21 # D6 - GPIO07
  uart_rx_pin: GPIO20 # D7 - GPIO10
  uart_baud_rate: "9600"
  uart_parity: NONE
  uart_stop_bits: "1"

esphome:
  name: ${name}
  friendly_name: ${friendly_name}
  platformio_options:
    board_build.flash_mode: dio

esp32:
  board: esp32-c3-devkitm-1 #seeed_xiao_esp32c3
  variant: esp32c3
  framework:
    type: esp-idf

api:
  encryption:
    key: !secret api_encryption_key

  services:
  - service: dfplayer_next
    then:
      - dfplayer.play_next:
  - service: dfplayer_previous
    then:
      - dfplayer.play_previous:
  - service: dfplayer_play
    variables:
      file: int
    then:
      - dfplayer.play: !lambda 'return file;'
  - service: dfplayer_set_device_tf
    then:
      - dfplayer.set_device: TF_CARD
  - service: dfplayer_set_device_usb
    then:
      - dfplayer.set_device: USB
  - service: dfplayer_sleep
    then:
      - dfplayer.sleep
  - service: dfplayer_reset
    then:
      - dfplayer.reset
  - service: dfplayer_start
    then:
      - dfplayer.start
  - service: dfplayer_pause
    then:
      - dfplayer.pause
  - service: dfplayer_stop
    then:
      - dfplayer.stop
  - service: dfplayer_random
    then:
      - dfplayer.random
  - service: dfplayer_volume_up
    then:
      - dfplayer.volume_up
  - service: dfplayer_volume_down
    then:
      - dfplayer.volume_down
ota:
  password: !secret ota_key

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  ap:
    ssid: "AA Test Fallback Hotspot"
    password: !secret ap_password

logger:
  hardware_uart: USB_SERIAL_JTAG #UART0
  level: DEBUG

captive_portal:    

web_server:

uart:
  id: uart_to_mp3
  tx_pin: ${uart_tx_pin}
  rx_pin: ${uart_rx_pin}
  baud_rate: ${uart_baud_rate}

dfplayer:
  on_finished_playback:
    then:
      - logger.log: "Playback finished"

The above code fails, however, if I remove the following lines, it links successfully

  - service: dfplayer_play
    variables:
      file: int
    then:
      - dfplayer.play: !lambda 'return file;'

Is this a Seeed Studio issue, DFPlayer issue, lambda or just my my bad YAML? I have tried various configurations and this is where I am at the moment. Any ideas?

2

Have you tried the long form of 'dfplayer.play:`? Just clutching at straws I know… :slight_smile:

    then:
      - dfplayer.play:
          file: !lambda 'return file;'
3

@zoogara Thanks for trying, but same result I’m afraid.

4

Ok - some more straws:

  • does Arduino framework work, rather than esp-idf?
  • really dumb ideas like casting file as long int in your lambda :poop:

EDIT: Just had a thought Arduino may not be supported with ESP32-C3?

5

@zoogara Those are some of my thoughts, but I don’t know enough to do any more diagnostic/investigation. I’ve recompiled with a d1_mini as the board and it compiles successfully with all the lambda code present. So yes, I’m guessing it’s a arduino/esp-idf type thing!?!?

6

The latest update (not sure if the date) to the Xiao C3 info on the Seeed wiki uses Arduino instead of ESP-IDF.

esphome:
  name: xiao-esp32c3
  platformio_options:
   board_build.flash_mode: dio

esp32:
  board: seeed_xiao_esp32c3
  variant: esp32c3
  framework:
    type: arduino
    platform_version: 5.4.0
7

@gaz99 Thanks but I remember now that this configuration gave me other issues. Specifically with the UART and the code not compiling.

Using your snippet as a start, I’m going through the code again to see if I get a successful compilation. At the moment can’t even get to the earlier lambda issues…

8

I think my fix here is a different board…

… back to the d1_mini!

9

I think I’ve found the solution here Help for DFPlayer - #3 by hasselhoff.

A few edits and it compiles successfully now, but it’s a bit late to fully test today, a job for tomorrow or the next few days.

UPDATE: Yes this works! Changing int to float makes everything burst into life, at least for me! Thank you @hasselhoff

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