mirror of
https://github.com/Seeed-Studio/Seeed_Arduino_CAN.git
synced 2026-07-28 04:06:45 +00:00
70 lines
1.6 KiB
Arduino
70 lines
1.6 KiB
Arduino
// demo: CAN-BUS Shield, send data
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// loovee@seeed.cc
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#include <SPI.h>
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#define CAN_2515
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// #define CAN_2518FD
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// Set SPI CS Pin according to your hardware
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#if defined(SEEED_WIO_TERMINAL) && defined(CAN_2518FD)
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// For Wio Terminal w/ MCP2518FD RPi Hat：
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// Channel 0 SPI_CS Pin: BCM 8
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// Channel 1 SPI_CS Pin: BCM 7
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// Interupt Pin: BCM25
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const int SPI_CS_PIN = BCM8;
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const int CAN_INT_PIN = BCM25;
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#else
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// For Arduino MCP2515 Hat:
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// the cs pin of the version after v1.1 is default to D9
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// v0.9b and v1.0 is default D10
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const int SPI_CS_PIN = 9;
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const int CAN_INT_PIN = 2;
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#endif
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#ifdef CAN_2518FD
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#include "mcp2518fd_can.h"
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mcp2518fd CAN(SPI_CS_PIN); // Set CS pin
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#endif
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#ifdef CAN_2515
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#include "mcp2515_can.h"
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mcp2515_can CAN(SPI_CS_PIN); // Set CS pin
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#endif
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void setup() {
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SERIAL_PORT_MONITOR.begin(115200);
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while(!Serial){};
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while (CAN_OK != CAN.begin(CAN_500KBPS)) { // init can bus : baudrate = 500k
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SERIAL_PORT_MONITOR.println("CAN init fail, retry...");
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delay(100);
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}
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SERIAL_PORT_MONITOR.println("CAN init ok!");
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}
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unsigned char stmp[8] = {0, 0, 0, 0, 0, 0, 0, 0};
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void loop() {
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// send data: id = 0x00, standrad frame, data len = 8, stmp: data buf
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stmp[7] = stmp[7] + 1;
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if (stmp[7] == 100) {
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stmp[7] = 0;
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stmp[6] = stmp[6] + 1;
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if (stmp[6] == 100) {
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stmp[6] = 0;
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stmp[5] = stmp[5] + 1;
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}
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}
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CAN.MCP_CAN::sendMsgBuf(0x00, 0, 8, stmp);
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delay(100); // send data per 100ms
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SERIAL_PORT_MONITOR.println("CAN BUS sendMsgBuf ok!");
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}
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// END FILE
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