ESPHOME et UART

bsd · May 20, 2021, 4:47pm

Hello everyone and in advance to those who will bring water to my mill.
I am currently tinkering with a Hoverboard and after modifying the firmware according to the excellent work of Emmanuel FERU, I want to drive the hacked motherboard via a serial link.

The goal is to make a small robot connected to EspHome and piloted by Home Assistant.
A little delirium wandering around the house or the garden but I don’t know yet what its spots would be… …
A lawn mower maybe…
In short, to do so, it is necessary to send the command below from EspHome (ESP32) via UART :

github.com

EmanuelFeru/hoverboard-firmware-hack-FOC/blob/eb20cc0acad0da91ead7d207fa6a83f1778f03e1/Arduino/hoverserial/hoverserial.ino

// *******************************************************************
//  Arduino Nano 5V example code
//  for   https://github.com/EmanuelFeru/hoverboard-firmware-hack-FOC
//
//  Copyright (C) 2019-2020 Emanuel FERU <[email protected]>
//
// *******************************************************************
// INFO:
// • This sketch uses the the Serial Software interface to communicate and send commands to the hoverboard
// • The built-in (HW) Serial interface is used for debugging and visualization. In case the debugging is not needed,
//   it is recommended to use the built-in Serial interface for full speed perfomace.
// • The data packaging includes a Start Frame, checksum, and re-syncronization capability for reliable communication
// 
// CONFIGURATION on the hoverboard side in config.h:
// • Option 1: Serial on Right Sensor cable (short wired cable) - recommended, since the USART3 pins are 5V tolerant.
//   #define CONTROL_SERIAL_USART3
//   #define FEEDBACK_SERIAL_USART3
//   // #define DEBUG_SERIAL_USART3
// • Option 2: Serial on Left Sensor cable (long wired cable) - use only with 3.3V devices! The USART2 pins are not 5V tolerant!
//   #define CONTROL_SERIAL_USART2

This file has been truncated. show original

So here are my questions :
How to transpose this Arduino code to EspHome ?
Via a Custum_Component or can we do it directly in Lambda from YAML ?
This project seems nice to me and we can get started with others.
Sorry but my English is really bad so Google is my friend…
All ideas are good to take. See you soon…
Bruno from Toulouse

Mikefila · May 21, 2021, 4:08am

Have you looked at custom uart device in esphome. You can use audrino code.

https://next.esphome.io/custom/uart.html

bsd · May 21, 2021, 5:29am

Hello.
I have watched, read and tested very carefully but to no avail yet…
Thanks a lot.

laca75tn · May 31, 2022, 12:27pm

Did you do more work on this? I would love to hear/see your progress. Thanks,

bsd · January 8, 2024, 8:32pm

This project is exciting.
Where is its development?
Does this work correctly?
Regards