Add C send demo

CMakeLists.txt

@@ -33,3 +33,5 @@ add_executable( demo src/demo.cpp )
 add_executable( demo_raw_decode src/demo_raw_decode.cpp )
 
 add_executable( demo_send src/demo_send.cpp )
+
+add_executable( demo_send_c src/demo_send.c )

src/demo_send.c

@@ -0,0 +1,46 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <linux/can.h>
+#include <linux/can/raw.h>
+
+#include "can_wrap.h"
+
+int main( int argc, char* argv[] )
+{
+    const char* canChannel = "vcan0";
+    const int canSocket = can_connect( canChannel, false );
+
+    for( int c=0; c<100; ++c )
+    {
+        struct can_frame frame;
+        memset( &frame, 0, sizeof(frame) );
+
+        frame.can_id = 0x188;
+        frame.can_dlc = 4;
+
+        switch( c%4 )
+        {
+            case 0:  frame.data[0] = 0b00000000; break;
+            case 1:  frame.data[0] = 0b00000001; break;
+            case 2:  frame.data[0] = 0b00000010; break;
+            default: frame.data[0] = 0b00000011; break;
+        }
+
+        printf("0x%X [%X]", frame.can_id, frame.can_dlc );
+        for( int i=0; i<frame.can_dlc; ++i )
+            printf( " %02X", frame.data[i] );
+        printf("\n");
+
+        if( !can_write( canSocket, &frame ) )
+            printf( "Error\n" );
+
+        sleep( 1 );
+    }
+
+	can_close( canSocket );
+
+	return 0;
+}