Displays distance to start location on OLED screen.

Dependencies:   mbed

Revision:
0:972874f31c98
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/u8g_com_arduino_common.c	Wed Mar 07 12:49:14 2018 +0000
@@ -0,0 +1,76 @@
+/*
+  
+  u8g_com_arduino_common.c
+  
+  shared procedures for the arduino communication procedures
+
+  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"
+
+#if defined(ARDUINO)
+
+#if ARDUINO < 100 
+#include <WProgram.h> 
+#else 
+#include <Arduino.h> 
+#endif
+
+void u8g_com_arduino_digital_write(u8g_t *u8g, uint8_t pin_index, uint8_t value)
+{
+  uint8_t pin;
+  pin = u8g->pin_list[pin_index];
+  if ( pin != U8G_PIN_NONE )
+    digitalWrite(pin, value);
+}
+
+/* this procedure does not set the RW pin */
+void u8g_com_arduino_assign_pin_output_high(u8g_t *u8g)
+{
+  uint8_t i;
+  /* skip the RW pin, which is the last pin in the list */
+  for( i = 0; i < U8G_PIN_LIST_LEN-1; i++ )
+  {
+    if ( u8g->pin_list[i] != U8G_PIN_NONE )
+    {
+      pinMode(u8g->pin_list[i], OUTPUT);	
+      digitalWrite(u8g->pin_list[i], HIGH);
+    }
+  }
+}
+
+
+#endif
+
+
+