From e2a6702c4cd9165437e8126e7edd79f3a78eda1d Mon Sep 17 00:00:00 2001
From: wangcoolc <1387172050@163.com>
Date: Tue, 24 Nov 2020 16:13:24 +0800
Subject: [PATCH] Modified mcp2518fd spi_CS spi_INT on wio terminal

---
 examples/receive/receive.ino | 26 ++++++++++++++++++--------
 examples/send/send.ino       | 13 +++++--------
 2 files changed, 23 insertions(+), 16 deletions(-)

diff --git a/examples/receive/receive.ino b/examples/receive/receive.ino
index 5bb1937..e99faa4 100644
--- a/examples/receive/receive.ino
+++ b/examples/receive/receive.ino
@@ -1,5 +1,4 @@
 // demo: CAN-BUS Shield, send data
-// loovee@seeed.cc
 
 #include "mcp2518fd_can.h"
 
@@ -10,29 +9,40 @@
     #define SERIAL Serial
 #endif
 
-//Mcp_Factory<mcp2518fd> my_Factory;
-
 
 // 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 = 23;
+const int SPI_CS_PIN = BCM8;
+const int CAN_INT_PIN = BCM25;
+
 mcp2518fd* controller;
 
+unsigned char flagRecv = 0;
+
 void setup() {
    SERIAL.begin(115200);
+   while(!Serial){};
    controller = new mcp2518fd();
-  controller->mcp_canbus(SPI_CS_PIN);
-  while (0 != controller->begin()) {            // init can bus : baudrate = 500k
+   controller->mcp_canbus(SPI_CS_PIN);
+   while (0 != controller->begin()) {            // init can bus : baudrate = 500k
        SERIAL.println("CAN BUS Shield init fail");
        SERIAL.println(" Init CAN BUS Shield again");
        delay(100);
    }
    SERIAL.println("CAN BUS Shield init ok!");
+   attachInterrupt(digitalPinToInterrupt(CAN_INT_PIN), MCP2518fd_ISR, FALLING); // start interrupt
+}
+
+void MCP2518fd_ISR() {
+	flagRecv = 1;
 }
  
 void loop() {
-   controller->mcp2518fd_receiveMsg();
-   delay(100);                       // send data per 100ms
+   if (flagRecv) {
+	   controller->mcp2518fd_receiveMsg();
+       delay(100);
+   }
+                          // send data per 100ms
 }
 
 // END FILE
diff --git a/examples/send/send.ino b/examples/send/send.ino
index 7ce1b79..30c7556 100644
--- a/examples/send/send.ino
+++ b/examples/send/send.ino
@@ -1,5 +1,4 @@
 // demo: CAN-BUS Shield, send data
-// loovee@seeed.cc
 
 #include "mcp2518fd_can.h"
 
@@ -10,19 +9,17 @@
     #define SERIAL Serial
 #endif
 
-//Mcp_Factory<mcp2518fd> my_Factory;
-
-
 // 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 = 23;
+const int SPI_CS_PIN = BCM8;
 mcp2518fd* controller;
 
 void setup() {
    SERIAL.begin(115200);
+   while(!Serial){};
    controller = new mcp2518fd();
-  controller->mcp_canbus(SPI_CS_PIN);
-  while (0 != controller->begin()) {            // init can bus : baudrate = 500k
+   controller->mcp_canbus(SPI_CS_PIN);
+   while (0 != controller->begin()) {            // init can bus : baudrate = 500k
        SERIAL.println("CAN BUS Shield init fail");
        SERIAL.println(" Init CAN BUS Shield again");
        delay(100);
@@ -44,7 +41,7 @@ void loop() {
        }
    }
 
-   controller->mcp2518fd_sendMsgBuf(stmp);
+   controller->mcp2518fd_sendMsgBuf(stmp,8);
    delay(100);                       // send data per 100ms
 }