How to read analog signals?

[thm ov3rkill]

hey thank you very much ill test it out tommorw. Well one question is this setup detecting a analog voltage then fires rapidfire

[LinkMTech]

You might be seeing a varying pulse width that looks like analog with your meter.

Hey after playing around and some testing with my new multimeter I found out this, The top pin is always low or ground the middle pin is 1.41 volt When the trigger is not held down, But when you start pressing the trigger it slowly starts decreasing, the more you hold it down the less the voltage gets. When i held the trigger down all the way It was at 0.31-0.30 volts thats afcourse when its down all the the way but even if you press it a little bit the voltage will decrease a little bit and the bottem pin of the 3 is at 1.61 volt all the time and doesent decrease nor increase. This is afcourse on this version of the controller while the other fires off high but not low like this

From: http://www.picbasic.co.uk/forum/show...4&postcount=27

Put a scope on it if you have one to make sure.
Just a thought.

[thm ov3rkill]

na pretty sure did research and saw other projects in devlopment in assemply

here is a pdf to read from it will help a lot I just want to finish this sucka up and play with it in the game =].

here is the pdf on all the info on the other project i also have it.

here I downlaoded it on rs since it exceeds ins 200kb's.

http://rapidshare.com/files/204649264/Opensource_Rapidfire_X360_Project2_2.pdf.html

[thm ov3rkill]

small bump

[thm ov3rkill]

still bumping

[mackrackit]

If you post the code that YOU wrote that is giving trouble maybe someone will take a look at it... But who knows...

[thm ov3rkill]

Ye i will try to post a code once i get a list of commands or a setup on how to read analog signals I mean I jsut need osme info thats all.

[DaveC3]

Here is a rapid fire project I made for my son. It has four states, 1) off, 2) 20 shot/sec, 3) 10shots/sec and 4) 5 shots/sec. You control the speed by tapping on the SYNC switch on the 360 controller. I used a 12F683. This will only work for the newer (CG or common ground) controllers.
The x-box trigger is a pot. when the trigger is pulled the wiper voltage goes from near zero to 3 volts. This circuit changes the pin (GP0) from input (tri-state) to a output with zero volts. There may be a little overkill, I was playing with Darrel's Instant Interrupts

@ __CONFIG   _FCMEN_OFF & _IESO_OFF & _CP_OFF & _CPD_OFF & _BOD_OFF & _MCLRE_OFF & _WDT_OFF & _PWRTE_ON & _INTOSCIO 

ANSEL = %00000000	'Make sure Analog functions are turned OFF (should not be needed)
CMCON0 = 7    'comparators off
OPTION_REG.7 = 0            'enable weak pullups
TRISIO = %00100101
WPU = %00000100     'weak pullup
OPTION_REG.6 = 0    'falling edge trigger

;***** VARIABLE DEFINITIONS******************

STATE		Var  byte		;programmed state

'';************************************************************************
'                    _______
'             VDD  -|1     8|- VSS
'             GP5  -|2     7|- GP0 TriggerR out ->
'             GP4  -|3     6|- GP1
'             GP3  -|4_____5|- GP2   <- sync
'
'
'
'
'*********GPIO pin names**************************************************
LED			    var		GPIO.5      'led output useing player 4 led
Sync    		var		GPIO.2      'sync switch input
TRIGGERR		var		GPIO.0      'rapid trigger output
'**********************************************************************

INCLUDE "DT_INTS-14.bas"     ; Base Interrupt System
INCLUDE "ReEnterPBP.bas"     ; Include if using PBP interrupts

ASM
INT_LIST  macro    ; IntSource,        Label,  Type, ResetFlag?
        INT_Handler   TMR1_INT,   ReloadTMR1,   ASM,  no    ; MUST be first
        INT_Handler   TMR1_INT,  _TriggerOut,   PBP,  yes
        INT_Handler    INT_INT,  _ChangeState,   PBP,  yes
    endm
    INT_CREATE               ; Creates the interrupt processor
ENDASM
    TMR1H = $A0       ' load timer1 with $00FF
    TMR1L = $B3

T1CON = $00
@ INT_ENABLE  TMR1_INT            ; enable Timer 1 interrupts
@ INT_ENABLE   INT_INT     ; enable external (INT) interrupts

;--- Change these to match the desired interrupt frequency -------------------
;--- See http://DarrelTaylor.com/DT_INTS-14/TimerTemplate.html for more Info.
@Freq       = 20                  ; Frequency of Interrupts in Hz
@Prescaler  = 1                   ; Timers Prescaler setting
T1CON = $00                       ; $30 = Prescaler 1:8, TMR1 OFF
; $00=1:1, $10=1:2, $20=1:4, $30=1:8 --  Must match @Prescaler value



State = 0

goto Main
'***************************************************************************
ChangeState:       ' Three states rapid fire 20 SPS 10 SPS and off
     pause 10
     if sync = 0 then   ' Switch debounce
         if state = 3 then state = 0
         select case state
          case 0      'twenty shots per sec
               gosub starttimer
          case 1      'ten shots per sec
               T1CON = $11
          case 2      ' five shots per second
               T1CON = $21
          
          case 3   'off
               T1CON = $00   'timer off
               TRISIO = %00100101
          end select
         state = state + 1
     endif  
     
@ INT_RETURN

'***************************************************************************
TriggerOut:
    TRIGGERR = 0     'Trigger 0
    TRISIO.0 = 0     ' Trigger output the 0
    low LED          'turn on led
    TRISIO.5 = 0     'make led a output
    pause 25         'pause 25 ms
    high led         'turn off led
    TRISIO.0 = 1     'put trigger in tristate mode (float)
    input LED        'put led in tristate mode (PCP method)
@ INT_RETURN
'***************************************************************************

Main:

'nothing happening here yet just using interupts for this project

goto main
;---[TMR1 reload - interrupt handler]-----------------------------------------
ASM                               ; Calculate Timer Reload Constant
ReloadInst  = 8                   ; # of Intructions used to reload timer
  if ((Prescaler == 1)||(Prescaler == 2)||(Prescaler == 4)||(Prescaler == 8))
MaxCount    = 65536 + (ReloadInst / Prescaler)
TimerReload = MaxCount - (OSC*1000000/4/Prescaler/Freq)
    if ((TimerReload < 0) || (TimerReload > (65535-ReloadInst)))
        error Invalid Timer Values - check "OSC", "Freq" and "Prescaler"
    endif
  else
      error Invalid Prescaler
  endif
ENDASM

@Timer1 = TMR1L                   ; map timer registers to a word variable
Timer1       VAR WORD EXT
TimerReload  CON EXT              ; Get the External Constant
TMR1ON       VAR T1CON.0          ; Alias the Timers ON/OFF bit

;---Reload Timer1------
ASM
ReloadTMR1
    MOVE?CT  0, T1CON, TMR1ON     ;  1     stop timer
    MOVLW    LOW(TimerReload)     ;  1     Add TimerReload to the 
    ADDWF    TMR1L,F              ;  1     value in Timer1
    BTFSC    STATUS,C             ;  1/2
    INCF     TMR1H,F              ;  1
    MOVLW    HIGH(TimerReload)    ;  1
    ADDWF    TMR1H,F              ;  1
    MOVE?CT  1, T1CON, TMR1ON     ;  1     start timer
  INT_RETURN
ENDASM
;---Start/Stop controls -----
StartTimer:
    Timer1  = TimerReload         ; Load Timer
    TMR1ON = 1                    ; start timer
RETURN

StopTimer:
    TMR1ON = 0                    ; stop timer
RETURN

Hope it helps a little

Dave