Added Self send and receive + FD examples

examples/send_receive/send_receive.ino

@@ -0,0 +1,78 @@
+/*
+    This is an example of sending and receiving on its own, connect two channels to each other using jumpers.
+*/
+
+#include <SPI.h>
+#include "mcp2518fd_can.h"
+
+/*SAMD core*/
+#ifdef ARDUINO_SAMD_VARIANT_COMPLIANCE
+    #define SERIAL SerialUSB
+#else
+    #define SERIAL Serial
+#endif
+
+// Set SPI CS Pin according to your hardware
+// For Wio Terminal w/ MCP2518FD RPi Hat：
+// Channel 0 SPI_CS Pin: BCM 8
+// Channel 1 SPI_CS Pin: BCM 7
+// Interupt Pin: BCM25
+// *****************************************
+// For Arduino MCP2515 Hat:
+// SPI_CS Pin: D9
+
+const int SPI_CS_PIN_SEND = 9;
+const int SPI_CS_PIN_RECEIVE = 10;
+
+mcp2518fd CAN_SEND(SPI_CS_PIN_SEND);
+mcp2518fd CAN_RECEIVE(SPI_CS_PIN_RECEIVE);
+
+unsigned char len = 0;
+unsigned char buf[8];
+
+void setup() {
+    SERIAL.begin(115200);
+    while(!Serial); // wait for Serial
+
+    if (CAN_SEND.begin((byte)CAN_500K_1M) != 0 || CAN_RECEIVE.begin((byte)CAN_500K_1M) != 0) {
+      Serial.println("CAN-BUS initiliased error!");
+      while(1);
+    }
+
+    SERIAL.println("CAN BUS Shield init ok!");
+}
+
+unsigned char stmp[8] = {0, 0, 0, 0, 0, 0, 0, 0};
+void loop() {
+    // send data:  id = 0x00, standrad frame, data len = 8, stmp: data buf
+    stmp[7] = stmp[7] + 1;
+    if (stmp[7] == 100) {
+        stmp[7] = 0;
+        stmp[6] = stmp[6] + 1;
+
+        if (stmp[6] == 100) {
+            stmp[6] = 0;
+            stmp[5] = stmp[6] + 1;
+        }
+    }
+
+    CAN_SEND.sendMsgBuf(0x00, 0, 8, stmp);
+    delay(100);                       // send data per 100ms
+    SERIAL.println("CAN BUS sendMsgBuf ok!");
+
+    // ---------------------
+
+    if (CAN_MSGAVAIL == CAN_RECEIVE.checkReceive()) {
+    // read data,  len: data length, buf: data buf
+      SERIAL.println("checkReceive");
+      CAN_RECEIVE.readMsgBuf(&len, buf);
+    // print the data
+    for (int i = 0; i < len; i++) {
+        SERIAL.print(buf[i]); SERIAL.print(" ");
+    }
+    SERIAL.println();
+    }
+    SERIAL.println("---LOOP END---");
+}
+
+// END FILE

examples/send_receiveFD/send_receiveFD.ino

@@ -0,0 +1,82 @@
+/*
+    This is an example of sending and receiving (FD) on its own, connect two channels to each other using jumpers.
+*/
+
+#include <SPI.h>
+#include "mcp2518fd_can.h"
+
+/*SAMD core*/
+#ifdef ARDUINO_SAMD_VARIANT_COMPLIANCE
+    #define SERIAL SerialUSB
+#else
+    #define SERIAL Serial
+#endif
+
+// Set SPI CS Pin according to your hardware
+// For Wio Terminal w/ MCP2518FD RPi Hat：
+// Channel 0 SPI_CS Pin: BCM 8
+// Channel 1 SPI_CS Pin: BCM 7
+// Interupt Pin: BCM25
+// *****************************************
+// For Arduino MCP2515 Hat:
+// SPI_CS Pin: D9
+
+const int SPI_CS_PIN_SEND = 9;
+const int SPI_CS_PIN_RECEIVE = 2;
+
+mcp2518fd CAN_SEND(SPI_CS_PIN_SEND);
+mcp2518fd CAN_RECEIVE(SPI_CS_PIN_RECEIVE);
+
+void setup() {
+    SERIAL.begin(115200);
+    while(!Serial); // wait for Serial
+    CAN_SEND.setMode(0);
+    CAN_RECEIVE.setMode(0);
+
+    if (CAN_SEND.begin((byte)CAN_500K_1M) != 0 || CAN_RECEIVE.begin((byte)CAN_500K_1M) != 0) {
+      Serial.println("CAN-BUS initiliased error!");
+      while(1);
+    }
+    byte send_mode = CAN_SEND.getMode();
+    byte receive_mode = CAN_RECEIVE.getMode();
+    SERIAL.print("CAN BUS Send Mode = "); SERIAL.println(send_mode);
+    SERIAL.print("CAN BUS Receive Mode = "); SERIAL.println(receive_mode);
+    SERIAL.println("CAN BUS Shield init ok!");
+}
+
+unsigned char stmp[64] = {0};
+unsigned char len = 0;
+unsigned char buf[64];
+
+void loop() {
+    stmp[63] = stmp[63] + 1;
+    if (stmp[63] == 100) {
+        stmp[63] = 0;
+        stmp[62] = stmp[62] + 1;
+
+        if (stmp[62] == 100) {
+            stmp[62] = 0;
+            stmp[61] = stmp[62] + 1;
+        }
+    }
+
+    CAN_SEND.sendMsgBuf(0x00, 0, 15, stmp);
+    delay(100);                       // send data per 100ms
+    SERIAL.println("CAN BUS sendMsgBuf ok!");
+
+    // ---------------------
+
+    if (CAN_MSGAVAIL == CAN_RECEIVE.checkReceive()) {
+    // read data,  len: data length, buf: data buf
+      SERIAL.println("checkReceive");
+      CAN_RECEIVE.readMsgBuf(&len, buf);
+    // print the data
+    for (int i = 0; i < len; i++) {
+        SERIAL.print(buf[i]); SERIAL.print("");
+    } 
+    SERIAL.println();
+    }
+    SERIAL.println("---LOOP END---");
+}
+
+// END FILE