This repository contains the infomation of FYSETC SD-WIFI module
You can get the firmware here.
The following problems occur in the SD-WIFI module, which may be due to insufficient power supply or signal problems.
The power supply of the USB interface connected to the SD-WIFI module is insufficient, if it is the host, change the USB interface to the rear; If it is a notebook computer, it is best to connect the power supply, directly connect to the USB port, do not connect to the extension dock.
If the above method does not work, put the module as close to the wifi signal source as possible, or change to a strong wifi signal source, the signal is too weak will lead to connection errors.
If Fix 2 cannot be implemented for some reason, the PHY mode of the module can be changed to enhance the module signal.
| WIFI_PHY_MODE | Description |
|---|---|
| WIFI_PHY_MODE_11B | The range is the largest, the speed is the slowest, and the power consumption is the most. |
| WIFI_PHY_MODE_11G | Medium range, speed and power consumption. |
| WIFI_PHY_MODE_11N | The range, power consumption is the smallest and the speed is the fastest. |
Modify firmware：
- Open firmware with arduino software.
- Global search“WiFi.setPhyMode”；
- Navigate to“WiFi.setPhyMode(WIFI_PHY_MODE_11N); ”；
- Replace the parentheses with "WIFI_PHY_MODE_11B" or "WIFI_PHY_MODE_11G"
- Recompile and upload to the module。
Firmware Compile and upload：https://github.com/FYSETC/ESPWebDAV
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