写一个基于arduino的CAN通信代码
时间: 2023-06-03 07:05:30 浏览: 98
好的,以下是一个基于Arduino的CAN通信代码示例:
```
#include <SPI.h>
#include <mcp_can.h>
// Set CAN RX and TX pins
#define CAN_CS 10
MCP_CAN CAN(CAN_CS);
void setup() {
Serial.begin(9600);
while (!Serial) {}
// Initialize CAN bus at 500kbps
if (CAN.begin(MCP_STDID, CAN_500KBPS, MCP_16MHZ) == CAN_OK) {
Serial.println("CAN bus init OK!");
} else {
Serial.println("Error initializing CAN bus.");
while (1);
}
}
void loop() {
// Check if there is a CAN message available
if (CAN.checkReceive()) {
// Get the CAN message
CAN.readMsgBuf(&id, &len, buf);
// Print the CAN message to serial
Serial.print("ID: 0x");
Serial.print(id, HEX);
Serial.print(" DLC: ");
Serial.print(len);
Serial.print(" Data: ");
for (int i=0; i<len; i++) {
Serial.print(buf[i], HEX);
Serial.print(" ");
}
Serial.println();
}
}
```
这段代码通过MCP_CAN库的帮助初始化一个CAN总线,然后检查是否有CAN消息可用,并将其打印到串口上。你可以根据你的具体情况进行修改和扩展。希望这可以帮到你!