From a3325c874adcea1cc166bce410a4c9310307265f Mon Sep 17 00:00:00 2001
From: wangcoolc <1387172050@163.com>
Date: Mon, 7 Dec 2020 17:45:11 +0800
Subject: [PATCH] complete canbus receive interrupt function

---
 .../receive_interrupt/receive_interrupt.ino   | 23 +++++++++----------
 1 file changed, 11 insertions(+), 12 deletions(-)

diff --git a/examples/receive_interrupt/receive_interrupt.ino b/examples/receive_interrupt/receive_interrupt.ino
index 549118f..69cba15 100644
--- a/examples/receive_interrupt/receive_interrupt.ino
+++ b/examples/receive_interrupt/receive_interrupt.ino
@@ -3,7 +3,7 @@
 // loovee, 2014-6-13
 
 #include <SPI.h>
-#include "mcp_can.h"
+#include "mcp2518fd_can.h"
 
 /*SAMD core*/
 #ifdef ARDUINO_SAMD_VARIANT_COMPLIANCE
@@ -14,12 +14,10 @@
 
 // the cs pin of the version after v1.1 is default to D9
 // v0.9b and v1.0 is default D10
-const int SPI_CS_PIN = 9;
-const int CAN_INT_PIN = 2;
-
-MCP_CAN CAN(SPI_CS_PIN);                                    // Set CS pin
-
+const int SPI_CS_PIN =  BCM8;
+const int CAN_INT_PIN = BCM25;
 
+mcp2518fd* controller;
 unsigned char flagRecv = 0;
 unsigned char len = 0;
 unsigned char buf[8];
@@ -27,10 +25,10 @@ char str[20];
 
 void setup() {
     SERIAL.begin(115200);
-    while (!SERIAL) {
-        ; // wait for serial port to connect. Needed for native USB port only
-    }
-    while (CAN_OK != CAN.begin(CAN_500KBPS)) {            // init can bus : baudrate = 500k
+    while(!Serial){};
+    controller = new mcp2518fd();
+    controller->mcp_canbus(SPI_CS_PIN);
+    while (CAN_OK != controller->begin((byte)CAN_500K_1M)) {            // init can bus : baudrate = 500k
         SERIAL.println("CAN BUS Shield init fail");
         SERIAL.println(" Init CAN BUS Shield again");
         delay(100);
@@ -42,6 +40,7 @@ void setup() {
 
 void MCP2515_ISR() {
     flagRecv = 1;
+    SERIAL.println("into MCP2515_ISR\n\r");
 }
 
 void loop() {
@@ -54,9 +53,9 @@ void loop() {
         // If either the bus is saturated or the MCU is busy,
         // both RX buffers may be in use and reading a single
         // message does not clear the IRQ conditon.
-        while (CAN_MSGAVAIL == CAN.checkReceive()) {
+        while (1 == controller->checkReceive()) {
             // read data,  len: data length, buf: data buf
-            CAN.readMsgBuf(&len, buf);
+            controller->readMsgBuf(&len, buf);
 
             // print the data
             for (int i = 0; i < len; i++) {