[Question] Led strip behavior

[nschurando]

Hi,

It appears unclear to me what the expected behavior of the led strip should be. I tied a WS2812B strip to GPIO27 which shows up as yellow when in recovery mode, suggesting the wiring is correct. Looking at the documentation I expected to the led strip to indicate the battery status when no music is playing, and eventually act as a vu meter when music is playing. But, appart when in recovery mode, the led strip stays off. Is this normal behavior?

I should add that I believe I have correctly configured the battery measurement, as looking into the /status.json page, the Voltage value matches the one of my one-cell battery.

I am running the I2S-4MFlash-1681 version flashed with the online installer. I am using a custom board, with LMS disabled (as I am relying on Bluetooth and Spotify instead). My nvs config is as follows:

{
  "a2dp_ctmt": "1000",
  "a2dp_ctrld": "500",
  "a2dp_dev_name": "Radio",
  "a2dp_sink_name": "SMSL BT4.2",
  "a2dp_spin": "0000",
  "actrls_config": "",
  "airplay_name": "Radio",
  "airplay_port": "5000",
  "ap_channel": "1",
  "ap_ip_address": "192.168.4.1",
  "ap_ip_gateway": "192.168.4.1",
  "ap_ip_netmask": "255.255.255.0",
  "ap_pwd": "squeezelite",
  "ap_ssid": "Radio",
  "autoexec": "1",
  "autoexec1": "squeezelite -o I2S -b 500:2000 -d all=info -C 30 -W -n \"Radio\" -s -disable",
  "bat_config": "channel=5,scale=4.4,cells=1,atten=0",
  "bt_name": "Radio",
  "bt_sink_pin": "1234",
  "bt_sink_volume": "127",
  "bypass_wm": "0",
  "cspot_config": "{\"deviceName\":\"Radio\",\"bitrate\":160,\"zeroConf\":0,\"volume\":52850}",
  "dac_config": "model=I2S,bck=5,ws=25,do=26,mute=19:0",
  "dac_controlset": "",
  "dhcp_tmout": "8",
  "display_config": "",
  "enable_airplay": "1",
  "enable_bt_sink": "1",
  "enable_cspot": "1",
  "equalizer": "",
  "eth_config": "",
  "ethtmout": "8",
  "gpio_exp_config": "",
  "host_name": "Radio",
  "i2c_config": "",
  "jack_mutes_amp": "n",
  "led_brightness": "",
  "led_vu_config": "type=WS2812,length=8,gpio=27,scale=100",
  "lms_ctrls_raw": "n",
  "loudness": "0",
  "metadata_config": "",
  "model_config": "",
  "ota_erase_blk": "249856",
  "ota_prio": "6",
  "ota_stack": "10240",
  "pollmin": "15",
  "pollmx": "600",
  "rel_api": "https://api.github.com/repos/sle118/squeezelite-esp32/releases",
  "release_url": "https://github.com/sle118/squeezelite-esp32/releases",
  "rotary_config": "",
  "set_GPIO": "",
  "sleep_config": "",
  "spdif_config": "",
  "spi_config": "",
  "stats": "n",
  "target": "",
  "telnet_block": "500",
  "telnet_buffer": "40000",
  "telnet_enable": ""
}

Thank you in advance,

Regards,

Nicolas

[wizmo2]

You will need to select a led_vu display mode with LMS (or extras menu). This requires the latest SqueezeESP addon. Battery status currently only works in VU Meter Modes.

Operation outside of LMS may not work

[nschurando]

Thanks for getting back to me. If I understand correctly, the led_vu requires LMS. Would it be acceptable if I proposed a PR that offers basic support of a led strip to display battery level even with LMS disabled?

[wizmo2]

Have a look at the set_GPIO LED output. I have not used it, but I think it was developed for the MUSE to display battery status with a single LED.