Designed for STM32F105 CAN gateway. https://github.com/BitterAndReal/STM32_NMEA2000_CAN_gateway Might also works with F103 / F107 / F405 / F407... and other STM32 MCU's with integrated bxCAN controller.
- NMEA2000 library https://github.com/ttlappalainen/NMEA2000
- STM32_CAN library https://github.com/BitterAndReal/STM32_CAN
- STM32 HAL for your MCU
┌───────────────────────────┐
│ STM32F1xx_HAL_Driver │
│ │
│ STM32F1xx_LL_Driver │
└────────┬────────────┬─────┘
│ │
┌──────────────────┐ ┌──────────▼────────┐ │
│ NMEA2000 class │ │ STM32_CAN class │ │
└────────────┬─────┘ └─────┬─────────┬───┘ │
│ │ │ │
┌──────▼─────────────────▼─────┐ │ │
│ NMEA2000_STM32 derived class │ │ │
└───────────────┬──────────────┘ │ │
│ │ │
┌─────────────────────▼──────────────────▼───────▼────┐
│ YOUR STM32 PROJECT │
└─────────────────────────────────────────────────────┘
- STM32CubeIDE NMEA2000 battery project example
Import project into your STM32CubeIDE workspace
If you are not very experienced with STM23CubeIDE this guide can help to configure a project for your own STM32 based hardware. I recommend start with this example
- Create a STM32 C++ project in STM23CubeIDE
- Select your MCU which will add the correct HAL to your project.
- We can not directly call C++ from the main.c
Create your own application.cpp & application.hpp files with your C++ project setup() and loop() which are called from with extern "C" {... From there you can include "NMEA2000.h" & "NMEA2000_STM32.hpp" & "STM32_CAN.hpp" and call the NMEA2000 methods.
- In Cube MX configure external clock settings of your MCU.
CAN bus needs an external clock source!
- Activate the CAN bus you want to use.
- Enable the CAN RX1 interrupt in the NVIC settings
- Enable the CAN TX interrupt in the NVIC settings
- Copy the NMEA2000 and NMEA_STM32 library's to your "Libs" folder of your STM32Cube project
or use linked git submodules.
// Use the following git commands to add submodules cd YourProjectRepo/Libs git submodule add https://github.com/ttlappalainen/NMEA2000 git submodule update --init --recursive git submodule add https://github.com/BitterAndReal/NMEA2000_STM32 git submodule update --init --recursive git submodule add https://github.com/BitterAndReal/STM32_CAN git submodule update --init --recursive // and update them with git pull --recurse-submodules git submodule update --remote --recursive
- Add the library folders to the G++ compiler include paths:
- Select your project in the Project Explorer.
- go to: File > Properties > C/C++ Build > Settings > MCU G++ Compiler > Include paths
- Add the NMEA2000 and NMEA_STM32 library folders to the included paths
- If you want to use the CAN init of the library, which sets the CAN baud rate and filters, disable the STM32CubeIDE generated code.
Navigate to “Project Manager” > “Advanced Settings” find MX_CAN#_Init” and enable “Do Not Generate Function Call”.
- By default, the peripheral MSP initialization function HAL_CAN_MspInit (in stm32xxx_hal_msp.c) is automatically called and takes care of the configuration of the CAN_RX/TX GPIOs, enabling of the peripheral clock and enabling of the CAN interrupts
- Check the following link for NMEA2000 examples. https://github.com/ttlappalainen/NMEA2000/tree/master/Examples
Thanks for the great NMEA2000 CAN lib example Teensyx by ttlappalainen. https://github.com/ttlappalainen/NMEA2000_Teensyx
The MIT License
Copyright (c) 2022 Minos Eigenheer
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