Here are my pins configurations!

Also for the data segments the two tables are what are needed, correct?

as for the key mask for the 4 push buttons, keymask = b'11110000' correct? (for my configuration of course!)

ima try breadboarding 4 leds and try lighting them with 4 button to see if it works.

 

I wrote a quick code for 4 buttons and I tested it on breadboard using 4 leds...and it worked perfet! I am confident to use this routine in my sound3 project as I'll be using 4 buttons as well...

each button set an led on!

the half second delay is not needed...

 

Again the same problem!!!

At 65 Hz...PR2 = 954 (too much for 8-bit register) at Fosc =4Mhz

Only safe at Fosc = 1Mhz with smaller freq 65Hz -> PR2 = 237.

How to solve this problem!!! or does it mean that as Ima use PWM there's no othewr option but to work with 1Mhz?

will that !Mhz ok with the ADC??

thanks!

 

I think it will still be able to work with the ADC method at 1MHz. I'll have a look tomorrow.

 

Just wana make sure it makes sense!

Assuming the routine 'scrollup' is called everytime a button is pressed!

and should display note A to G and octave 2 to 5..so it goes like: A2, B2,...G2, A3, B3,..G3,...G5 and loop back!

thanks!

 

It looks about right.
Is there a reason you are using ABCDEFG instead of CDEFGAB? It's going to be a bit weird pressing the up button and the note sometimes going lower.

 

Well I think it should be in that order as written in requirement!...As long as they different sounds it ok I think!

 

About this one!? this is for PWM!

This routine is called everytime a button is pressed to play a diffent sound!

there will be 3 tables pr2tab, ccp1contab and ccpr1ltab for PR2, CCP1CON and CCPR1L respectively! T2CON is the same for all frequency and will be put in the initialization!

thanks!

 

Fair enough. Have you managed to get anything displayed on the multiplexed SSD yet? You should probably check that works before making the program more complex.

 

About this one!? this is for PWM!

This routine is called everytime a button is pressed to play a diffent sound!

there will be 3 tables pr2tab, ccp1contab and ccpr1ltab for PR2, CCP1CON and CCPR1L respectively! T2CON is the same for all frequency and will be put in the initialization!

thanks!

Maybe, give it a try (or simulate ). I can't see anything stopping the note, the PWM will just continue if not disabled.

 

Fair enough. Have you managed to get anything displayed on the multiplexed SSD yet? You should probably check that works before making the program more complex.

You are correct! that's why I am writing small routines for eveything then will combine them together! I know there are always ways of combining routines...with very small editing if need!

I tested the multiplexing...its ok...with a press for scrolling up...but have not tested my latest 'scrollup' routine I just posted!

But there is a problem I don't get!!! when the 2 SSD display the same character (note or octave) the display are ok! But when they different character on the two displays...some segment that should not be on are 'slightly' on...I have never seen that before!

I tried again using ONLY initial values of the SSD with different charaters..same problem! And I tried display '00' as initial display it worked ok!

What I mean is if I try displaying: 00, 44, 33, AA, BB...it ok

but for instance 23, B4 CD...(different character) --> not ok!

Will try figuring this out later unless someone can tell me what it might be...


thanks!

 

Maybe, give it a try (or simulate ). I can't see anything stopping the note, the PWM will just continue if not disabled.

You are correct! But this little 'code editing' WILL stop the note!

you are smiling coz you know I don't like *simulating* ...lol

Now tell me if the note will still not be stopped from 'making noise' lol ?

thanks!

 

Routine 'scrollup' edited ...have included indexes for PWM registers!

Hope it makes sense!

[edited] editing PWM registers on top!

 

Correct!
I think the return on the second line means the sound won't stop or ever clear the half second flag.
Also spotted, I think you need to reload W with the note value for some of the table calls.

 

Correct!
I think the return on the second line means the sound won't stop or ever clear the half second flag.

Yes! that what they mean! only after half second has elapsed it can be stopped and flag cleared! Any other bug with this routine?

Also spotted, I think you need to reload W with the note value for some of the table calls.

Guess you are talking about 'scrollup'..where W needs re-loading? will check but you can tell me!

 

But there is a problem I don't get!!! when the 2 SSD display the same character (note or octave) the display are ok! But when they different character on the two displays...some segment that should not be on are 'slightly' on...I have never seen that before!

Make sure the first digit transistor is turned off, then the segment port is changed, then the second digit transistor is turned on.
If that's correct then it's probably the transistors taking too long to switch. Try putting a resistor ten times the value of the base resistor to ground from the base (or to 5V if they are PNP).
If all else fails then the multiplexing frequency could be reduced.

 

Yes! that what they mean! only after half second has elapsed it can be stopped and flag cleared! Any other bug with this routine?

Not that I noticed.

Guess you are talking about 'scrollup'..where W needs re-loading? will check but you can tell me!

Presumably W contains the note number here
    call    pr2tab            ; get tone frequency 
          movwf    PR2            ;  
 
    bcf    STATUS,RP0        ; bank 0 
 W now contains the PR2 value, not the note number
    call    ccp1contab        ; configure CCP module as single output-P1A modulated 
          movwf     CCP1CON            ; 2 lsbs are '10' and P1A-P1D are all active 
 W now contains the CCP1CON value, not the note number
    call    ccpr1ltab        ;  
          movwf     CCPR1L            ; 50% duty cycle of PWM period

 

Attached is the 'scrolldown' routine!

I tested both scrollup and scrolldown and they both logically work perfectly! but the problem is the multiplexing as adressed in post #31!

I tried posting the 'multiplexing 'code here but could not get the alignment right...so I attached it as well!

the problem is when either 'notes_dsp' or 'octaves_dsp' is used in both *notes_enable* and *octaves_enable*...the 2 SSDs display the same character and it perfect...But logicaly they can be the same...so when they different...the segments that should be on are really on and those that should not are slightl on...

Never experienced that and wasting time trying to figure this out!

 

OK! lemme read your comments...I posted it not knowing you addressed it!

 

I tried posting the 'multiplexing 'code here but could not get the alignment right...so I attached it as well!

It's slightly in the wrong order, try changing to the order I mentioned a couple of posts back.