https://github.com/ikskuh/wifiserial

UART-to-Wifi converter based on an ESP32
https://github.com/ikskuh/wifiserial

Last synced: about 1 month ago
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UART-to-Wifi converter based on an ESP32

• Host: GitHub
• URL: https://github.com/ikskuh/wifiserial
• Owner: ikskuh
• License: mit
• Created: 2024-03-11T19:22:40.000Z (8 months ago)
• Default Branch: main
• Last Pushed: 2024-03-11T20:02:28.000Z (8 months ago)
• Last Synced: 2024-05-17T11:43:11.002Z (6 months ago)
• Language: C++
• Size: 6.84 KB
• Stars: 3
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# WifiSerial

Unholy combination of Arduino and ESP-IDF to create a primitive network-attached UART.

Features:

* Online reconfiguration

* Standard Port 23 for pure serial communications

* Configuration Port for changing parameters

## Hardware + Pinout

I use a NodeMCU 32S, but it doesn't really matter, which ESP32 board you use.

You can use any ESP32 based hardware with the following pinout:

| ESP GPIO | Function       |

| -------- | -------------- |

| 1        | Debug/Prog TXD |

| 3        | Debug/Prog RXD |

| 16       | UART RXD       |

| 17       | UART TXD       |

## Data Port

* TCP Port 23

* Only a single connection at a time.

* Everything sent is transmitted via the UART.

* Everything received via the UART is sent back to the host.

## Configuration Port

* TCP Port 1337

* Only a single connection at a time.

* Line based protocol, accepts both CR and LF as command separator.

* Syntax is `key=value`

* Query the value by passing `key=?`

* Legal keys are:

  * `baud`, takes an integer, current baud rate

  * `mode`, takes a mode descriptor in the form of `8n1` (databits, parity, stop bits)

    * databits from `5` to `8`

    * parity is `e` (even), `o` (odd), `n` (none)

    * stop bits is `1` or `2`

## Build

Get PlatformIO and do:

```sh-session

[user@host] ~/wireless-uart$ pio run 

…

[user@host] ~/wireless-uart$ 

```