1 files changed, 81 insertions, 0 deletions
diff --git a/2.3-1/src/c/hardware/avr/gpio/u8AVRDigitalPortSetups.c b/2.3-1/src/c/hardware/avr/gpio/u8AVRDigitalPortSetups.c
new file mode 100644
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+++ b/2.3-1/src/c/hardware/avr/gpio/u8AVRDigitalPortSetups.c
@@ -0,0 +1,81 @@
+// Copyright (C) 2017 - IIT Bombay - FOSSEE
+//
+// This file must be used under the terms of the CeCILL.
+// This source file is licensed as described in the file COPYING, which
+// you should have received as part of this distribution.  The terms
+// are also available at
+// http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
+// Organization: FOSSEE, IIT Bombay
+// Email: toolbox@scilab.in
+
+// Function to decide direction of a digital pin on AVR
+//
+// Calling Sequence
+//     AVRDigitalPortSetup(port,direction)
+//
+// Parameters
+//     port : port of microcontroller to be used (1 for PORTA, 2 for PORTB,...)
+//     direction : direction to be set for pin (0 for input, 1 for output)
+//
+// Description
+//     Each AVR microcontroller has pins which can be configured as digital
+//     outputs/inputs. These are normally divided among some 'ports' (group of pins).
+//     User has to select one of these port and which pin of that port to be 
+//     used as digital output/input. Also, desired direction must be specified as 
+//     'INPUT' or 'OUTPUT'.     
+//
+// Examples
+//     AVRDigitalPortSetup(1,0);  //this function will PortA as input Port
+//
+// Authors
+//     Siddhesh Wani
+//     Ashish Kamble
+
+
+#include "AVRPeripheralGPIO.h"
+
+uint8 u8AVRDigitalPortSetups(uint8 port,uint8 direction)
+{
+ if(direction == INPUT)
+  {
+   /*Set port as input*/      
+   if(port == PORT_A)
+    {
+     DDRA = 0x00;
+    }
+   if(port == PORT_B)
+    {
+     DDRB = 0x00;
+    }
+   if(port == PORT_C)
+    {
+     DDRC = 0x00;
+    }
+   if(port == PORT_D)
+    {
+     DDRD = 0x00;
+    }
+   }
+ else
+  {
+   /*Set port as output*/      
+   if(port == PORT_A)
+    {
+     DDRA = 0xFF;
+    }
+   if(port == PORT_B)
+    {
+     DDRB = 0xFF;
+    }
+   if(port == PORT_C)
+    {
+     DDRC = 0xFF;
+    }
+   if(port == PORT_D)
+    {
+     DDRD = 0xFF;
+    }
+   }
+ return 0;
+}   
+