# HG changeset patch
# User mkanning@CL-SEC241-09.cedarville.edu
# Date 2012-10-25 22:23:40
# Node ID 4b4d7ead8c5aedeb48a9b3d851120e2e25bda115
# Parent  1e2b7cbcf224a676dfcdaf2d0c03f5c415684e9e

added checksum calculations to parser

diff --git a/master/master/lib/serparser.c b/master/master/lib/serparser.c
--- a/master/master/lib/serparser.c
+++ b/master/master/lib/serparser.c
@@ -39,6 +39,9 @@ char data[16];
 //ID of the sensor of most recent transmission
 char sensorID;
 
+//checksum to be calculated and then compared to the received checksum
+char checksumCalc;
+
 /* return char from UART (h/w buffer) */
 uint8_t uart_getchar(void)
 {
@@ -52,8 +55,6 @@ uint8_t uart_getchar(void)
 	return 0;
 }
 
-
-
 /* Process incoming serial data */
 int uart_Parser(void)
 {
@@ -84,6 +85,7 @@ int uart_Parser(void)
 			if(byte == MODULE_ID) //this transmission is intended for the master; continue parsing
 			{
 				bufferPosition++;
+				checksumCalc += byte;
 				dataLength = 0; //reset dataLength here to protect from bad inputs
 			}
 			else //this transmission is intended for another module; stop parsing and reset
@@ -95,6 +97,7 @@ int uart_Parser(void)
 		{
 			sensorID = byte; //store the type of data receiving
 			bufferPosition++;
+			checksumCalc += byte;
 		}
 		else if (bufferPosition == MAX_CMD_LEN) //command is too long and bad data has been recieved; reset
 		{
@@ -110,6 +113,8 @@ int uart_Parser(void)
 			{
 				data[dataLength] = byte;
 				dataLength++;
+				bufferPosition++;
+				checksumCalc += byte;
 			}
 
 		}