Trying to make my code proceed and stop when a button is pressed. Then repeat the actions continuously until I press the button telling it to stop.

Below is my code. Right now it starts when I press my button and then record data for a given time interval set by me before hand. I would like to make my code start recording when I press my button on the circuit, then I would like it to record the data from the voltage and stop whenever I press the button to make readDigitalPin(a,'D2') = 0. Once the button is pressed it will stop the recording process and then perform what was recorded onto my servos. I would also like it to continulally to perform the actions infintiy until I press the button again telling it to stop. Thanks.

clear all

clear

clc

a = arduino('com3', 'uno');

s = servo(a, 'D10','MaxPulseDuration', .0025, 'MinPulseDuration', .0005);

b = 6

readDigitalPin(a,'D2')

n = 200;

x = zeros(1,n);

k = 1

while k == 1

false

if readDigitalPin(a,'D2') == 0

break

end

for k = 1:n

z = readVoltage(a,'A5');

p = ((1023 / 5) * z);

x(k) = (p / 1023);

writePosition(s,x(k));

end

for k = 1:n

writePosition(s,x(k))

end

end