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Complete canbus gpio write example

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wangcoolc
2020-12-10 17:10:14 +08:00
committed by Baozhu Zuo
parent 391a4891b0
commit 1a927343eb
1 changed files with 38 additions and 6 deletions
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examples/gpioWrite/gpioWrite.ino
+38 -6
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@@ -1,7 +1,8 @@
// demo: Use RX0BF and RX1BF as digital outputs
// adlerweb, 2017-06-24
#include <SPI.h>
#include "mcp_can.h"
#include "mcp2515_can.h"
#include "mcp2518fd_can.h"
/*SAMD core*/
#ifdef ARDUINO_SAMD_VARIANT_COMPLIANCE
@@ -10,27 +11,47 @@
#define SERIAL Serial
#endif
#define SPI_CS_PIN 10
#define CAN_2518FD
#define SPI_CS_PIN BCM8
MCP_CAN CAN(SPI_CS_PIN); // Set CS pin
#ifdef CAN_2518FD
mcp2518fd CAN(SPI_CS_PIN); // Set CS pin
#endif
#ifdef CAN_2515
mcp2515_can CAN(SPI_CS_PIN); // Set CS pin
#endif
void setup() {
SERIAL.begin(115200);
while (CAN_OK != CAN.begin(CAN_500KBPS)) { // init can bus : baudrate = 500k
#ifdef CAN_2518FD
while (0 != CAN.begin((byte)CAN_500K_1M)) { // init can bus : baudrate = 500k
#endif
#ifdef CAN_2515
while (CAN_OK != CAN.begin(CAN_500KBPS)) {
#endif // init can bus : baudrate = 500k
SERIAL.println("CAN init failed, retry");
delay(100);
}
SERIAL.println("CAN init ok");
if (CAN.mcpPinMode(MCP_RX0BF, MCP_PIN_OUT)) {
#ifdef CAN_2518FD
if (CAN.mcpPinMode(GPIO_PIN_0, GPIO_MODE_INT)) {
#else
if (CAN.mcpPinMode(MCP_TX2RTS, MCP_PIN_IN)) {
#endif
SERIAL.println("RX0BF is now an output");
} else {
SERIAL.println("Could not switch RX0BF");
}
if (CAN.mcpPinMode(MCP_RX1BF, MCP_PIN_OUT)) {
#ifdef CAN_2518FD
if (CAN.mcpPinMode(GPIO_PIN_1, GPIO_MODE_INT)) {
#else
if (CAN.mcpPinMode(MCP_TX2RTS, MCP_PIN_IN)) {
#endif
SERIAL.println("RX1BF is now an output");
} else {
SERIAL.println("Could not switch RX1BF");
@@ -39,12 +60,23 @@ void setup() {
void loop() {
SERIAL.println("10");
#ifdef CAN_2518FD
CAN.mcpDigitalWrite(GPIO_PIN_0, GPIO_HIGH);
CAN.mcpDigitalWrite(GPIO_PIN_1, GPIO_LOW);
#else
CAN.mcpDigitalWrite(MCP_RX0BF, HIGH);
CAN.mcpDigitalWrite(MCP_RX1BF, LOW);
#endif
delay(500);
SERIAL.println("01");
#ifdef CAN_2518FD
CAN.mcpDigitalWrite(GPIO_PIN_0, GPIO_LOW);
CAN.mcpDigitalWrite(GPIO_PIN_1, GPIO_HIGH);
#else
CAN.mcpDigitalWrite(MCP_RX0BF, LOW);
CAN.mcpDigitalWrite(MCP_RX1BF, HIGH);
#endif
delay(500);
}