support LinkIt ONE

examples/debug/debug.ino

@@ -0,0 +1,70 @@
+// demo: CAN-BUS Shield, receive data with interrupt mode
+// when in interrupt mode, the data coming can't be too fast, must >20ms, 
+// or else you can use check mode
+// loovee, 2014-6-13
+#include <SPI.h>
+#include "mcp_can.h"
+
+// 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;
+
+MCP_CAN CAN(SPI_CS_PIN);                                    // Set CS pin
+
+unsigned char flagRecv  = 0;
+unsigned char len       = 0;
+unsigned char buf[8];
+char str[20];
+
+void setup()
+{
+    Serial.begin(115200);
+
+    while (CAN_OK != CAN.begin(CAN_500KBPS))              // 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(0, MCP2515_ISR, FALLING); // start interrupt
+}
+
+void MCP2515_ISR()
+{
+    flagRecv = 1;
+}
+
+// {id, }
+void loop()
+{
+    if(flagRecv) 
+    {                                   // check if get data
+
+        flagRecv = 0;                   // clear flag
+
+        // iterate over all pending messages
+        // 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()) 
+        {
+            // read data,  len: data length, buf: data buf
+            CAN.readMsgBuf(&len, buf);
+
+            // print the data
+            for(int i = 0; i<len; i++)
+            {
+                Serial.print(buf[i]);Serial.print("\t");
+            }
+            Serial.println();
+        }
+    }
+    
+    
+}
+
+/*********************************************************************************************************
+  END FILE
+*********************************************************************************************************/