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Complete canbus gpio read example

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This commit is contained in:
wangcoolc
2020-12-10 17:10:14 +08:00
committed by Baozhu Zuo
parent ed18dd50ad
commit 7eda1c5315
1 changed files with 26 additions and 7 deletions
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examples/gpioRead/gpioRead.ino
+26 -7
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@@ -1,7 +1,11 @@
// demo: Use TX2RTS as digital input
// adlerweb, 2017-06-24
#include <SPI.h>
#include "mcp_can.h"
#include "mcp2515_can.h"
#include "mcp2518fd_can.h"
#define CAN_2518FD
#define SPI_CS_PIN BCM8
/*SAMD core*/
#ifdef ARDUINO_SAMD_VARIANT_COMPLIANCE
@@ -10,21 +14,32 @@
#define SERIAL Serial
#endif
#define SPI_CS_PIN 10
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
SERIAL.println("CAN init failed, retry");
delay(100);
}
SERIAL.println("CAN init ok");
#ifdef CAN_2518FD
if (CAN.mcpPinMode(GPIO_PIN_0, GPIO_MODE_INT)) {
#else
if (CAN.mcpPinMode(MCP_TX2RTS, MCP_PIN_IN)) {
#endif
SERIAL.println("TX2RTS is now an input");
} else {
SERIAL.println("Could not switch TX2RTS");
@@ -33,7 +48,11 @@ void setup() {
void loop() {
SERIAL.print("TX2RTS is currently ");
#ifdef CAN_2518FD
SERIAL.println(CAN.mcpDigitalRead(GPIO_PIN_0));
#else
SERIAL.println(CAN.mcpDigitalRead(MCP_TX2RTS));
#endif
delay(500);
}