mirror of
https://github.com/Seeed-Studio/Seeed_Arduino_CAN.git
synced 2026-07-28 04:06:45 +00:00
49 lines
1.2 KiB
Arduino
49 lines
1.2 KiB
Arduino
// demo: CAN-BUS Shield, send data
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// loovee@seeed.cc
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#include <mcp_can.h>
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#include <SPI.h>
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/*SAMD core*/
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#ifdef ARDUINO_SAMD_VARIANT_COMPLIANCE
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#define SERIAL SerialUSB
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#else
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#define SERIAL Serial
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#endif
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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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MCP_CAN CAN(SPI_CS_PIN); // Set CS pin
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void setup() {
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SERIAL.begin(115200);
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while (CAN_OK != CAN.begin(CAN_500KBPS)) { // init can bus : baudrate = 500k
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SERIAL.println("CAN BUS Shield init fail");
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SERIAL.println(" Init CAN BUS Shield again");
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delay(100);
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}
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SERIAL.println("CAN BUS Shield 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[6] + 1;
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}
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}
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CAN.sendMsgBuf(0x00, 0, 8, stmp);
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delay(100); // send data per 100ms
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}
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// END FILE
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