NMEA2000_STM32X

This library provides a STM32 Arduino CAN driver for the NMEA2000 library. It works for bxCAN and FDCAN devices.

Details

• Library is well tested on STM32F4 and STM32U5
• Uses interrupts for sending and receiving
• Fast packet frame order is preserved 100%
• Uses own ringbuffer queue per priority. Puts packets based on priority into the FIFO queue (FDCAN) or TX mailboxes (bcXAN)

How to use.

To use this library, CAN module needs to be enabled in HAL drivers. If PIO is used, it's enough to add -DHAL_CAN_MODULE_ENABLED for bxCAN or -DHAL_FDCAN_MODULE_ENABLED for FDCAN as build flag. With Arduino IDE it's easiest to create hal_conf_extra.h file to same folder with sketch and have #define HAL_CAN_MODULE_ENABLED or #define HAL_FDCAN_MODULE_ENABLED there.

For FDCAN, the FDCAN clock should be initialized in SystemClock_Config(), like PeriphClkInit.Fdcan1ClockSelection = RCC_FDCAN1CLKSOURCE_PLL1;.

Usage

#include <NMEA2000.h>
#include <N2kMessages.h>
#include <NMEA2000_STM32X.h>

tNMEA2000 &NMEA2000 = *(new tNMEA2000_STM32X(PB_8, PB_9));

void setup() {
  NMEA2000.Open();
}

void loop() {
    NMEA2000.ParseMessages();
}

Contributing & Hardware Testing

Contributions are welcome! If you are testing this driver on a new STM32 MCU or board, I'd especially love to hear from you.

Credits

This library is mainly a merge of these repositories:
https://github.com/pazi88/STM32_CAN
https://github.com/ttlappalainen/NMEA2000_Teensyx
https://github.com/simplefoc/SimpleCANio
https://github.com/duckylotl/STM32_CAN