71 lines
1.7 KiB
Arduino
71 lines
1.7 KiB
Arduino
|
// demo: CAN-BUS Shield, send data
|
|||
|
|
// loovee@seeed.cc
|
|||
|
|
|
|||
|
|
|
|||
|
|
#include <SPI.h>
|
|||
|
|
|
|||
|
|
#define CAN_2515
|
|||
|
|
// #define CAN_2518FD
|
|||
|
|
|
|||
|
|
// the cs pin of the version after v1.1 is default to D9
|
|||
|
|
// v0.9b and v1.0 is default D10
|
|||
|
|
|
|||
|
|
// Set SPI CS Pin according to your hardware
|
|||
|
|
// For Wio Terminal w/ MCP2518FD RPi Hat：
|
|||
|
|
// Channel 0 SPI_CS Pin: BCM 8
|
|||
|
|
// Channel 1 SPI_CS Pin: BCM 7
|
|||
|
|
// Interupt Pin: BCM25
|
|||
|
|
// *****************************************
|
|||
|
|
// For Arduino MCP2515 Hat:
|
|||
|
|
// SPI_CS Pin: D9
|
|||
|
|
|
|||
|
|
#ifdef CAN_2518FD
|
|||
|
|
#include "mcp2518fd_can.h"
|
|||
|
|
const int SPI_CS_PIN = 9;
|
|||
|
|
const int CAN_INT_PIN = 2;
|
|||
|
|
mcp2518fd CAN(SPI_CS_PIN); // Set CS pin
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
#ifdef CAN_2515
|
|||
|
|
#include "mcp2515_can.h"
|
|||
|
|
const int SPI_CS_PIN = 9;
|
|||
|
|
const int CAN_INT_PIN = 2;
|
|||
|
|
mcp2515_can CAN(SPI_CS_PIN); // Set CS pin
|
|||
|
|
#endif // Set CS pin
|
|||
|
|
|
|||
|
|
void setup() {
|
|||
|
|
SERIAL_PORT_MONITOR.begin(115200);
|
|||
|
|
while(!Serial){};
|
|||
|
|
|
|||
|
|
#ifdef CAN_2518FD
|
|||
|
|
while (0 != CAN.begin((byte)CAN_500K_1M)) { // init can bus : baudrate = 500k
|
|||
|
|
#else
|
|||
|
|
while (CAN_OK != CAN.begin(CAN_500KBPS)) { // init can bus : baudrate = 500k
|
|||
|
|
#endif
|
|||
|
|
SERIAL_PORT_MONITOR.println("CAN init fail, retry...");
|
|||
|
|
delay(100);
|
|||
|
|
}
|
|||
|
|
SERIAL_PORT_MONITOR.println("CAN init ok!");
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
unsigned char stmp[8] = {0, 0, 0, 0, 0, 0, 0, 0};
|
|||
|
|
void loop() {
|
|||
|
|
// send data: id = 0x00, standrad frame, data len = 8, stmp: data buf
|
|||
|
|
stmp[7] = stmp[7] + 1;
|
|||
|
|
if (stmp[7] == 100) {
|
|||
|
|
stmp[7] = 0;
|
|||
|
|
stmp[6] = stmp[6] + 1;
|
|||
|
|
|
|||
|
|
if (stmp[6] == 100) {
|
|||
|
|
stmp[6] = 0;
|
|||
|
|
stmp[5] = stmp[5] + 1;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
CAN.sendMsgBuf(0x00, 0, 8, stmp);
|
|||
|
|
delay(100); // send data per 100ms
|
|||
|
|
SERIAL_PORT_MONITOR.println("CAN BUS sendMsgBuf ok!");
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// END FILE
|