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https://github.com/Seeed-Studio/Seeed_Arduino_CAN.git
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69 lines
1.7 KiB
Arduino
69 lines
1.7 KiB
Arduino
// demo: Use TX2RTS as digital input
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// adlerweb, 2017-06-24
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#include <SPI.h>
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#include "mcp2515_can.h"
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#include "mcp2518fd_can.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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mcp2518fd CAN(SPI_CS_PIN); // Set CS pin
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#endif
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#ifdef CAN_2515
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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 (CAN_OK != CAN.begin(CAN_500KBPS)) {
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SERIAL_PORT_MONITOR.println("CAN init failed, 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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#ifdef CAN_2518FD
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if (CAN.mcpPinMode(GPIO_PIN_0, GPIO_MODE_INT)) {
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#else
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if (CAN.mcpPinMode(MCP_TX2RTS, MCP_PIN_IN)) {
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#endif
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SERIAL_PORT_MONITOR.println("TX2RTS is now an input");
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} else {
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SERIAL_PORT_MONITOR.println("Could not switch TX2RTS");
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}
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}
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void loop() {
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SERIAL_PORT_MONITOR.print("TX2RTS is currently ");
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#ifdef CAN_2518FD
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SERIAL_PORT_MONITOR.println(CAN.mcpDigitalRead(GPIO_PIN_0));
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#else
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SERIAL_PORT_MONITOR.println(CAN.mcpDigitalRead(MCP_TX2RTS));
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#endif
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delay(500);
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}
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/*********************************************************************************************************
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END FILE
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*********************************************************************************************************/
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