function s_out_ini

%v is the value of the voltage
%n is the number of the channel
%v_code=32768+((v*8.8/1.9-2.5)*10^4/2);%計算5622的電壓碼,加運放
%v_code=32768+((v-2.5)*10^4/2);%計算5622的電壓碼
s = serial('COM1');
fopen(s)
set(s,'DataBits',8)
s.BaudRate=2400;
fwrite(s,170,'uint8')%輸出握手信號AA
fwrite(s,170,'uint8')
fwrite(s,170,'uint16')
%s.BytesAvailable
readasync(s);
shakehand = fread(s,1)
s.BytesAvailable;
%get(s,{'BaudRate','DataBits','Parity','StopBits','Terminator'})
fclose(s)

delete(s)