107-Arduino-MCP2515
Arduino library for controlling the MCP2515 in order to receive/transmit CAN frames. This library is prepared to interface easily with libcanard for using UAVCAN on Arduino via 107-Arduino-UAVCAN.
This library works for
- ArduinoCore-samd:
Arduino Zero,MKR 1000,MKR WiFi 1010,Nano 33 IoT,MKR GSM 1400,MKR NB 1500,MKR WAN 1300/1310✔️ - ArduinoCore-mbed:
Portenta H7,Nano 33 BLE,Nano RP2040 Connect,Edge Control✔️ - arduino-esp32:
ESP32 Dev Module,ESP32 Wrover Module, ...✔️ - arduino-pico:
Raspberry Pi Pico,Adafruit Feather RP2040, ...✔️
Example
#include <SPI.h>
#include <ArduinoMCP2515.h>
/* ... */
static int const MKRCAN_MCP2515_CS_PIN = 3;
static int const MKRCAN_MCP2515_INT_PIN = 7;
/* ... */
void onReceiveBufferFull(uint32_t const timestamp_us, uint32_t const id, uint8_t const * data, uint8_t const len)
{
Serial.println(id, HEX);
}
void onTransmitBufferEmpty(ArduinoMCP2515 * this_ptr)
{
/* You can use this callback to refill the transmit buffer via this_ptr->transmit(...) */
}
/* ... */
ArduinoMCP2515 mcp2515([](){ digitalWrite(MKRCAN_MCP2515_CS_PIN, LOW); },
[](){ digitalWrite(MKRCAN_MCP2515_CS_PIN, HIGH); },
[](uint8_t const d) -> uint8_t { return SPI.transfer(d); },
micros,
onReceiveBufferFull,
onTransmitBufferEmpty);
/* ... */
void setup()
{
Serial.begin(9600);
while(!Serial) { }
SPI.begin();
pinMode(MKRCAN_MCP2515_CS_PIN, OUTPUT);
digitalWrite(MKRCAN_MCP2515_CS_PIN, HIGH);
pinMode(MKRCAN_MCP2515_INT_PIN, INPUT_PULLUP);
attachInterrupt(digitalPinToInterrupt(MKRCAN_MCP2515_INT_PIN), [](){ mcp2515.onExternalEventHandler(); }, FALLING);
mcp2515.begin();
mcp2515.setBitRate(CanBitRate::BR_250kBPS_16MHZ);
mcp2515.setNormalMode();
}
void loop()
{
uint8_t const data[8] = {0xDE, 0xAD, 0xBE, 0xEF, 0xDE, 0xAD, 0xBE, 0xEF};
mcp2515.transmit(1 /* id */, data, 8 /* len */);
delay(100);
}
![[Feature Request] Documentation on how to use](https://avatars.githubusercontent.com/u/363018?v=4)
![[Bug Report]Try to use it on esp32c3 but not work](https://avatars.githubusercontent.com/u/3829889?v=4)
