/
MCP2515_CAN_Sender.ino
78 lines (63 loc) · 1.85 KB
/
MCP2515_CAN_Sender.ino
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
/*
* Adafruit MCP2515 FeatherWing CAN Sender Example
*/
#include <Adafruit_MCP2515.h>
#ifdef ESP8266
#define CS_PIN 2
#elif defined(ESP32) && !defined(ARDUINO_ADAFRUIT_FEATHER_ESP32S2) && !defined(ARDUINO_ADAFRUIT_FEATHER_ESP32S3)
#define CS_PIN 14
#elif defined(TEENSYDUINO)
#define CS_PIN 8
#elif defined(ARDUINO_STM32_FEATHER)
#define CS_PIN PC5
#elif defined(ARDUINO_NRF52832_FEATHER) /* BSP 0.6.5 and higher! */
#define CS_PIN 27
#elif defined(ARDUINO_MAX32620FTHR) || defined(ARDUINO_MAX32630FTHR)
#define CS_PIN P3_2
#elif defined(ARDUINO_ADAFRUIT_FEATHER_RP2040)
#define CS_PIN 7
#elif defined(ARDUINO_ADAFRUIT_FEATHER_RP2040_CAN)
#define CS_PIN PIN_CAN_CS
#elif defined(ARDUINO_RASPBERRY_PI_PICO) || defined(ARDUINO_RASPBERRY_PI_PICO_W) // PiCowbell CAN Bus
#define CS_PIN 20
#else
// Anything else, defaults!
#define CS_PIN 5
#endif
// Set CAN bus baud rate
#define CAN_BAUDRATE (250000)
Adafruit_MCP2515 mcp(CS_PIN);
void setup() {
Serial.begin(115200);
while(!Serial) delay(10);
Serial.println("MCP2515 Sender test!");
if (!mcp.begin(CAN_BAUDRATE)) {
Serial.println("Error initializing MCP2515.");
while(1) delay(10);
}
Serial.println("MCP2515 chip found");
}
void loop() {
// send packet: id is 11 bits, packet can contain up to 8 bytes of data
Serial.print("Sending packet ... ");
mcp.beginPacket(0x12);
mcp.write('h');
mcp.write('e');
mcp.write('l');
mcp.write('l');
mcp.write('o');
mcp.endPacket();
Serial.println("done");
delay(1000);
// send extended packet: id is 29 bits, packet can contain up to 8 bytes of data
Serial.print("Sending extended packet ... ");
mcp.beginExtendedPacket(0xabcdef);
mcp.write('w');
mcp.write('o');
mcp.write('r');
mcp.write('l');
mcp.write('d');
mcp.endPacket();
Serial.println("done");
delay(1000);
}