Diff: u8g_com_null.c

Revision:

0:972874f31c98

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/u8g_com_null.c	Wed Mar 07 12:49:14 2018 +0000
@@ -0,0 +1,64 @@
+/*
+
+  u8g_com_null.c
+ 
+  communication null device
+
+  Universal 8bit Graphics Library
+ 
+  Copyright (c) 2011, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification,
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list
+    of conditions and the following disclaimer.
+   
+  * Redistributions in binary form must reproduce the above copyright notice, this
+    list of conditions and the following disclaimer in the documentation and/or other
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+ 
+ 
+*/
+
+#include "u8g.h"
+
+uint8_t u8g_com_null_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8G_COM_MSG_INIT:
+      break;
+    case U8G_COM_MSG_STOP:
+      break;
+
+   
+    case U8G_COM_MSG_CHIP_SELECT:
+      /* arg_val contains the chip number, which should be enabled */
+      break;
+
+
+    case U8G_COM_MSG_WRITE_BYTE:
+      break;
+    case U8G_COM_MSG_WRITE_SEQ:
+      break;
+  }
+  return 1;
+}
+
+