From e66efbbe8df2dd4e7de0a1e9bd129cf92e00f92f Mon Sep 17 00:00:00 2001
From: vikle012 <viktor.leek@liu.se>
Date: Wed, 11 Sep 2019 13:57:14 +0200
Subject: Initializes repo.

---
 Kod/bilbana/IOFunctions/get_car_position.m | 81 ++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 Kod/bilbana/IOFunctions/get_car_position.m

(limited to 'Kod/bilbana/IOFunctions/get_car_position.m')

diff --git a/Kod/bilbana/IOFunctions/get_car_position.m b/Kod/bilbana/IOFunctions/get_car_position.m
new file mode 100644
index 0000000..ef68fc2
--- /dev/null
+++ b/Kod/bilbana/IOFunctions/get_car_position.m
@@ -0,0 +1,81 @@
+function [add_lap,add_check_point,elapsed_time_check_point] = get_car_position(track)
+%GET_CAR_POSITION Reads the current values of the lap and check point
+%counters, and resets them if they are not equal to zero.
+%   
+%  Tobias Lindell 2013-02-13
+
+global mytaskh
+global lib
+
+switch nargin
+    case 1
+        add_lap = [];
+        add_check_point = [];
+        elapsed_time_check_point = [];
+        
+        if isempty(mytaskh)
+            disp(['User needs to initialize counters for track ',num2str(track),' before getting car position!'])
+            clearvars -global mytaskh lib
+            return
+        end
+        
+        switch track
+            case 1
+                if isfield(mytaskh,'ctr_1')
+                    add_check_point = DAQmxReadCounterScalarU32(lib,mytaskh.ctr_1);
+                    add_lap = DAQmxReadCounterScalarU32(lib,mytaskh.ctr_2);
+                    read_ticks = DAQmxReadCounterScalarU32(lib,mytaskh.ctr_3);
+                else
+                    disp(['User needs to initialize counters for track ',num2str(track),' before getting car position!'])
+                    return
+                end
+            case 2
+                if isfield(mytaskh,'ctr_5')
+                    add_check_point = DAQmxReadCounterScalarU32(lib,mytaskh.ctr_5);
+                    add_lap = DAQmxReadCounterScalarU32(lib,mytaskh.ctr_6);
+                    read_ticks = DAQmxReadCounterScalarU32(lib,mytaskh.ctr_7);
+                else
+                    disp(['User needs to initialize counters for track ',num2str(track),' before getting car position!'])
+                    return
+                end
+                
+            otherwise
+                disp('Wrong track number sent to get_car_position!')
+                return
+        end
+        
+        if add_check_point || add_lap
+            elapsed_time_check_point = read_ticks / 100;
+            start_race(track);
+            clear read_ticks
+        end
+    otherwise
+        disp('Wrong number of input arguments sent to get_car_position(track)! Should be 1!')
+end
+end
+
+function Data = DAQmxReadCounterScalarU32(lib,taskh)
+% function taskh = DAQmxReadCounterScalarU32(lib,taskh)
+% 
+% this function reads a counter value from previously setup task
+% 
+% inputs:
+%	lib - .dll or alias (ex. 'myni')
+%	taskh - taskhandle of analog inputs
+% 
+% 
+% written by Tobias Lindell
+% inspired by Nathan Tomlin (nathan.a.tomlin@gmail.com)
+% v0 - 1302
+
+DAQmx_Val_WaitInfinitely = -1.0;
+
+reserved = []; 
+reserved_ptr = libpointer('uint32Ptr',reserved);
+Data = 1; 
+data_ptr = libpointer('uint32Ptr',Data);
+calllib(lib,'DAQmxReadCounterScalarU32',taskh,DAQmx_Val_WaitInfinitely,data_ptr,reserved_ptr);
+counter = get(data_ptr);
+Data = counter.Value;
+end
+
-- 
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