= NMEA2000_esp32 library for ESP32 boards =

Inherited object for use NMEA2000 library for ESP32 Boards. See also https://github.com/ttlappalainen/NMEA2000[NMEA2000] library.

To use this library, you will also need NMEA2000 library.

The library defines as default Tx pin to GPIO 16 and Rx pint to GPIO 4. You can change these with defines:

define ESP32_CAN_TX_PIN GPIO_NUM_16

define ESP32_CAN_RX_PIN GPIO_NUM_4

before including NMEA2000_CAN.h or NMEA2000_esp32.h

== Thanks ==

Thanks to Thomas Barth, barth-dev.de for his implementation of ESP32 CAN driver. Instead of using his driver as external driver I implemented the code to the NMEA2000_esp32 to avoid conflicts.

== Changes == 04.10.2022

• Add ESP-IDF support

15.11.2020

• Added CAN reset to CAN_init
• Fix for ESP32 rev>=2. New chips uses Baud Rate Prescaler Divider (BRP_DIV) bit, which was set on interrupt vector causing invalid baud rate.

05.11.2019

• Fixed can frame buffer handling. After ESP soft reset can controller could have false data on frame length and cause writing outside of frame buffer.

20.10.2019

• Fixed pin definition at startup to avoid error frame.

06.04.2014 Initial commit.

== License ==

2015-2022 Copyright (c) Kave Oy, www.kave.fi All right reserved.

Author: Timo Lappalainen

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.