T-Dongle-S3: issues

[PSLLSP]

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Issues with device T-Dongle-S3.

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One button on device doesn't work as described in README

One button devices:

• One click > change screen.
• Double click > change screen orientation.
• Tripple click > turn the screen off and on again.
• Hold 5 seconds > reset the configurations and reboot your NerdMiner.

T-Dongle-S3 supports only "Double click" and "Hold 5 seconds". There is only one screen that scrolls all information, that is probably why "One click" is ignored. "Tripple click" doesn't work, maybe that hardware doesn't support screen on/off.

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config.json file cannot be read from microSDHC card.

T-Dongle-S3 has microSDHC slot, it is "hidden" in USB connector. README specifies how to prepare SD card with configuration to configure NerdMiner. I prepared 16 GB microSDHC card with config.json file but it seems like NerdMiner on T-Dongle-S3 ignores that file. It just shows Use WiFi for setup...; I tried to press button, to hold button for few seconds, to hold button while I insert dongle to USB slot, etc, I tried UNIX and DOS end of lines, etc... Nothing, config.json file on microSDHC is ignored, I have to use WiFi to configure the dongle...

My config.jso file is valid:

$ jq 'length' config.json 
7

$ cat config.json
{
  "SSID": "NerdAP",
  "WifiPW": "wifiSECRET",
  "PoolUrl": "solo.ckpool.org",
  "PoolPort": 3333,
  "BtcWallet": "bc1q28kkr5hk4gnqe3evma6runjrd2pvqyp8fpwfzu.NM0",
  "Timezone": 0,
  "SaveStats": false
}

Unfortunately, troubleshooting is difficult, there is no error on the screen, no hint what was wrong. It is just possible that firmware for T-Dongle-S3 was build without support for SD cards...