Serin2 and Button command

[ero]

@miter_e,

Thank you for the reply. I was thinking that something was making busy the port and everything is clear now.
I will try your suggestions.

Thanks again
ERO

[ero]

@Mister_e,

Yesterday, I made a lot of try in order to find a way for using the button. I have to tell you the result is still neagtive.
First of all I used Tiemout and label and tried from 1 ms up to 250 ms. If I put 1 ms the button working very well but meanwhile serin does not receive any data. If use 2 ms. serin starts to receive datas and the button is working randomly. It means you push the button (continuously on) it is not working but if you make continuously on/off one moment the button is working.
All other figures from 3-250 ms. does not work.

I tried to use also RB0 interrupt for the serial input. In this way the serin is working very well but button again does not work.

I was using 16F628 pic and it has USART and I decided to use also HSERIN it is also not working. I was so nervous and finally I stop the work and I put mechanical switch to my system.
I gave this information just for your information.

Thanks
ERO

[mister_e]

do you still have your code ?!?

[ero]

@Mister_e,

I give you here the code. It is changed a lot of time but it is the last one which I used and by this program button is working a little bit for instance after 1-2 minutes it is making on and again 2-3 minutes later it making off also.

OPTION_REG.7=1

@ DEVICE pic16F628
@ DEVICE pic16F628, WDT_ON
@ DEVICE pic16F628, PWRT_ON
@ DEVICE pic16F628, PROTECT_OFF
@ DEVICE pic16F628, MCLR_OFF
@ DEVICE pic16F628, INTRC_OSC_NOCLKOUT

'---------------------------Variab..------------------------------
AL VAR BYTE
TOPLAM var byte
KOMBI VAR BYTE
GIRIS VAR PORTB.0
ROLE VAR PORTA.1
TUS var PORTA.6
LED VAR PORTB.3
YANDI VAR byte
SONDU VAR Byte
I VAR BYTE
'-----------------------------MAIN ---------------------------
CMCON=7
CLEAR:TRISA=%01100000
TRISB=%00000011
PAUSE 500:AL=88:sondu=0:KOMBI=0:LOW LED

'-------------------------------------------------------------------------------
START:

BUTTON TUS,0,200,5,I,1,BAK

SerIn2 GIRIS,1646,10,ATLA,[WAIT ("ER"),AL]

ATLA:
IF AL=88 THEN
IF SONDU=1 THEN ARA 'if already off then ara
GOSUB SON 'gosub off
GOTO START
ENDIF

IF AL=66 THEN
IF YANDI=1 THEN ARA 'if already on then ara
GOSUB YAN 'gosub on
GOTO START
ENDIF
pause 1

ARA: GOTO START
'--------------------if button is pushed -------------------------
BAK: IF KOMBI=1 THEN 'if already on then gosub offf
GOSUB SON
AL=88
GOTO START
ENDIF
GOSUB YAN 'it is already off then gosub on
AL=66
GOTO START

YAN: '------------------on section-------------------
KOMBI=1
YANDI=1:SONDU=0
HIGH ROLE
HIGH LED
pause 1
RETURN

SON: '-----------------off section---------------------
LOW LED:KOMBI=0
SONDU=1:YANDI=0
LOW ROLE
pause 1
RETURN

[mister_e]

some things can cause this. Let's look this snip

IF AL=88 THEN 
     IF SONDU=1 THEN ARA 'if already off then ara
     GOSUB SON 'gosub off
     GOTO START
ENDIF

You exit several time from a IF THEN and/or a nested IF THEN ELSE with a goto... not a good practice. You probably overflow the stack pointer.

as i read SONDU will be 0 or 1 so

ReturnToStart var Bit


Start:
ReturnToStart = 0

IF AL=88 THEN 
     IF SONDU=0 THEN 
          GOSUB SON 'gosub off
     endif
     ReturnToStart = 1
ENDIF
if ReturnToStart then GotoStart

about the BUTTON statement... i'm not a fan of this statement. i'll prefer do 2-3 lines myself.

Let's say i want to monitor a pushButon on PORTA.1

TRISA.1=1
PushButton VAR PORTA.1
start:
     If PushButton then    ' Pushbutton active 
          While PushButton ' wait untill it's release
          Wend
          Pause 50 ' debounce time
          Gosub XYZ
     endif

[ero]

Dear Steve,
Thank you for the tricks. You right I checked the program again and I saw that there are a lot of cunfusions. It was working but as you have said the reason can be the stack due to that cınfusions.Anyhow, I changed the program to make one loop only. I taken out all the zig-zags in the program. I did not yet tried. I was busy. I will try it within two days and let you know the result.

It would be good idea if I can check the program with one debugger. It is a pity that I have not mcs plus. By the way I would see where the program was going without touching the button command.

Thanks again
ERO

[ero]

Steve,

Yesterday evening, I tested all the possibilities again after I made a new program which is only one loop. It was checking the button first after it was passing to SERIN2 command and passing to control what was arrived by SERIN2. Anyhow I have to tell you that the serin or serin2 command does not work with any button control. I tested all the timeout figures starting from 2 ms up to 2000 ms. I am sure there is a bug in the compiler.
I tested again the HSERIN command by making some changing on the pcb and I saw that it is working very well. Today I will change all the PCB and the program for working with HSERIN command.

I wanted to give you again the result of my work which can be intersting for other people.
Thanks again for your helps.

Regards
Ero