Controlling Raspberry pi using GUI

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Welid Benchouche
Welid Benchouche 2021-8-20
Dear Fellow MATLABers
Greetings! i hope you are well
My problem is that I am trying to control my raspberry pi that is connected to an L298n motor shield that has 4 inputs to control 2 DC motors,
IN1 and IN2 to control the first one, and IN3 and IN4 to control the second one.
now in order to run for example the first motor forward
i need to set IN1 to high and IN2 to low using the function configurePins(rpi,IN1_pin, 0 or 1)
where :
rpi is the method we connect the raspberry pi to MATLAB so rpi = raspi;
IN1 pin in my case is GPIO 14 so IN1_pin = 14;
here is my code to control 2 dc motors forward for example,
my problem is :
when i try to set the function Forward to a button in my gui, it says that rpi is unknown, i tried to make it global but it didnt work for rpi, it works for the pins because they r doubles, but not the rpi.
second problem is :
i want to use my keyboard arrows to control the motors, ps : uparrow to push forward,, etc
function varargout = keyyyyboard(varargin)
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @keyyyyboard_OpeningFcn, ...
'gui_OutputFcn', @keyyyyboard_OutputFcn, ...
'gui_LayoutFcn', [] , ...
'gui_Callback', []);
if nargin && ischar(varargin{1})
gui_State.gui_Callback = str2func(varargin{1});
end
if nargout
[varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT
% --- Executes just before keyyyyboard is made visible.
function keyyyyboard_OpeningFcn(hObject, eventdata, handles, varargin)
handles.output = hObject;
guidata(hObject, handles);
% --- Outputs from this function are returned to the command line.
function varargout = keyyyyboard_OutputFcn(hObject, eventdata, handles)
varargout{1} = handles.output;
% --- Executes on button press in FORWARD.
function FORWARD_Callback(hObject, eventdata, handles)
% hObject handle to FORWARD (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Get.handles(FORWARD.'on')
set(handles.FORWARD,'visible','on')
% set(handles.uitable1,'visible','on')
rpi = raspi;
a = 14; b = 15; d = 27; c = 22;
Forward(rpi,a,b,c,d)
% The keypressfcn for the figure.
% --- Executes on button press in BACKWARDS.
function BACKWARDS_Callback(hObject, eventdata, handles)
% hObject handle to BACKWARDS (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
set(handles.BACKWARDS,'visible','on')
% set(handles.uitable1,'visible','on')
rpi = raspi;
a = 14; b = 15; d = 27; c = 22;
Back(rpi,a,b,c,d)
% --- Executes on button press in RIGHT_TURN.
function RIGHT_TURN_Callback(hObject, eventdata, handles)
% hObject handle to RIGHT_TURN (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
set(handles.RIGHT_TURN,'visible','on')
% set(handles.uitable1,'visible','on')
rpi = raspi;
a = 14; b = 15; d = 27; c = 22;
Right(rpi,a,b,c,d)
% --- Executes on button press in LEFT_TURN.
function LEFT_TURN_Callback(hObject, eventdata, handles)
% hObject handle to LEFT_TURN (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
set(handles.LEFT_TURN,'visible','on')
% set(handles.uitable1,'visible','on')
rpi = raspi;
a = 14; b = 15; d = 27; c = 22;
Left(rpi,a,b,c,d)
% --- Executes on button press in STOP.
function STOP_Callback(hObject, eventdata, handles)
% hObject handle to STOP (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
set(handles.STOP,'visible','on')
% set(handles.uitable1,'visible','on')
rpi = raspi;
a = 14; b = 15; d = 27; c = 22;
Stop(rpi,a,b,c,d)
please help me as i am very new to GUIsmy GUI figure

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