# 18m2 question

#### ROMARLO

##### New Member
I am programming a picaxe 18m2 with two games, and i want to know how can i change between games with a switch
both games use the same 4 input switches and 4 output leds
The games are: simon says and quiz game

Thank you

Last edited:

#### premelec

##### Senior Member

IF Selectpin THEN
GOSUB Game1
ELSE
GOSUB Game2
ENDIF

With switches and lights called as subroutiunes within Game1 or Game2

Be more specific as to problem you are having...

#### ROMARLO

##### New Member
I made this, but i have to reset the chip to change between games,
my quiestion is if there are a command to do the change without reset the chip

Thanks premelec
Code:
``````main:
if pinB.4 = 0 then main1
if pinB.4 = 1 then main2

' AXE104 Quiz Program

main1:	high C.2		' use LED4 as game indicator
if pin1 = 1 then team1	' test switch
if pin0 = 1 then team2	' test switch
if pin7 = 1 then team3	' test switch
if pin6 = 1 then team4  ' test switch
goto main

team1:				' team 1 LED
high B.0
goto timer

team2:				' team 2 LED
high B.1
goto timer

team3:				' team 3 LED
high B.2
goto timer

team4:
high B.3                ' team 4 LED
goto timer

timer:	sound B.7,(100,100)	' make beep
if b1 > 100 then time10	' if biiger than 100 jump

time5:	pause 5000		' 5 seconds
low B.0			' LEDs off
low B.1
low B.2
low B.3
goto main		' back to start

time10:	pause 10000		' 10 seconds
low B.0			' LEDs off
low B.1
low B.2
low B.3
goto main		' back to start

main2:    high C.3      ' use LED4 as game indicator

; AXE106 Simon Says Game
; *** Define the variables used ***
; Push switches on inputs 0,1,6,7
; Speed preset on input 2
; LEDs on outputs 0-3
; Piezo on output 7
symbol value = b2 ; switch value 0-1-2-3
symbol playerstep = b3 ; position of player in game
symbol freq = b4 ; sound variable
symbol topstep = b5 ; number of steps in sequence
symbol counter = b6 ; general purpose counter
symbol speed = b7 ; speed
; *** Section 1 **********************
; *** This section waits for start ***
; ************************************
; wait for any switch to be pushed
; with all four LEDs lit
; preload rand with any number by repeatedly
; using the random command in the loop
init:
let outpinsB = %00001111
random rand
if pin0 = 1 then preload
if pin1 = 1 then preload
if pin6 = 1 then preload
if pin7 = 1 then preload
goto init
; *** Section 2 ****************************
; *** This section loads memory for game ***
; ******************************************
; load EEPROM data memory with 100 numbers
; first get the random number (0 to 255)
; and then change to either 1,2,3 or 4
; and then save into data memory
let outpinsB = %00000000 ; LEDs off
for counter = 0 to 30 ; for..next loop
let value = 0
random rand ; get random number 0-255
if rand > 180 then set0
if rand > 120 then set1
if rand > 60 then set2
set3: let value = value + 1 ;1+1+1 = 3
set2: let value = value + 1 ;1+1 = 2
set1: let value = value + 1 ;1
set0: ;0
write counter,value ; save in data memory
next counter ; next loop
; *** Section 3 ****************************
; *** This section plays back a sequence ***
; ******************************************
; switch off the LEDs and then start
; a game with the end counter as 1
let outpinsB = %00000000 ; LEDs off
let topstep = 1 ; reset step number to 1
; playback the game sequence
playback:
for counter = 1 to topstep ; for...next loop
gosub beep ; make the noise
pause 300 ; short delay
next counter ; loop
; *** Section 4 *****************************************
; *** This section detects the players reply sequence ***
; *******************************************************
; now the user responds
; reset the players position to 1
playerstep = 1
gameloop:
; if playerstep is greater than topstep then all done
if playerstep > topstep then success
; get the correct key value is supposed to hit
; from the EEPROM memory
; now wait for switch to be pressed
lp: if pin7 = 1 then pushed0
if pin0 = 1 then pushed1
if pin1 = 1 then pushed2
if pin6 = 1 then pushed3
goto lp
; switch pressed so check it is the correct one
; if it is make a beep sound and then continue
; else fail the game
pushed0:
if value <> 0 then fail
let playerstep = playerstep + 1
gosub beep
goto gameloop
pushed1:
if value <> 1 then fail
let playerstep = playerstep + 1
gosub beep
goto gameloop
pushed2:
if value <> 2 then fail
let playerstep = playerstep + 1
gosub beep
goto gameloop
pushed3:
if value <> 3 then fail
let playerstep = playerstep + 1
gosub beep
goto gameloop
; *** Failed so make noise and jump back to start ***
; failed so make failed noise, switch off all LEDs
; and go back to start
fail:
let outpinsB = %0000000 ; all LEDs off
sound 7,(80,100) ; make a noise
sound 7,(50,100)
goto init ; back to start
; *** Succeeded so add another step to sequence and loop ***
; success so make a success sound
; and then increment topstep and do another sequence
success:
pause 100 ; short delay
let outpinsB = %00001111 ; all LEDs on
sound 7,(120,50) ; success beep
let outpinsB = %00000000 ; all LEDs off
pause 100 ; short delay
let topstep = topstep + 1 ; add another step
goto playback ; loop again
; *** Section 5 ****************
; *** sub light LED and beep ***
; ******************************
;sub-procedure to light correct LED
;and make a different beep sound for each LED
;value always contains number 0,1,2 or 3.
;add 1 and multiply by 20 to give larger difference
;in the sound noise
beep:
high value ; switch on LED
freq = value + 1 ; generate sound freq.
freq = freq * 25
sound 7,(freq,speed) ; play sound
low value ; switch off LED
return ; return``````

Last edited by a moderator:

#### premelec

##### Senior Member
Be more specific WHY you have to reset the unit - is it because variables hold wrong values? If so just institute an initialize part for each game. Since you are using B.4 to select you need to check B.4 after each game to see what setting it has for next game. I haven't looked through your whole design - it's evident you have a good handle on it You are almost there...

#### Hemi345

##### Senior Member
Another option would be to separate the games into the 2 memory slots supported on the 18M2. Then like premelec says, check the switch state within each program and switch to the other slot if required.

#### ROMARLO

##### New Member
Thanks to PREMELEC and Hemi345 now i have a clear idea on how to do it

HAPPY NEW YEAR