Need help for 12F675

I'm not too keen on ASM.

Though I don't quite understand your issue

"i got 5out put from it. But i need get 5putput with "RC" speed control,"

I interpret this as you have a basic program working with 5 outputs with the pattern moving within the loop. Well done, getting the an output or led flashing can be difficult when you are new to a chip.

With an RC Speed control. Do you mean Remote Controlled Speed Control such as http://www.edutek.ltd.uk/Circuit_Pages/RC_Speed_Controller.html ?

 

i guess you mean potentiometer?

you need to you an Analogue / Digital module. The module with the same name in the datasheet chapter 7 in this version of the datasheet http://ww1.microchip.com/downloads/en/devicedoc/41190c.pdf

by reading the 10 bit value once you have correctly configured the module, you should be able to adjust the time period of the delay to be proportional to the voltage at the AD module which would affect the speed of the program.

 

As always read the chips datasheet...

GPIO3 aka pin 4 is INPUT ONLY (when not MCLR)

Move your variable input to GPIO3 and use GPIO0, GPIO1, GPIO2, GPIO4, GPIO5 as the outputs...

Or multiplex using 4 outputs if you are only driving LEDs...

 

PIC12F675 GP3 is DIGITAL input only (if not used as reset pin). It is impossible to have one analogue input and 5 digital outputs with this PIC.

Also, your circuit for analogue input will not work. It will always show as "high" whatever your potentiometer setting.

What you want is impossible with this PIC

... and as usual I agree with CocaCola about reading the datasheet (but disagree about analogue input on GP3)

 

is this output wired differently to the rest? If the diagram is accurate the rest of the pins are floating!

My limited understanding of hardware I think you are trying to drive a pin that has been set up in hardware to be an input. I see know other reason to drive a line with a pot.

 

To use the pins built in ADC to obtain an externally controllable variable... In this case I believe he wants to use it as a speed control in the delay routine...

 

Yep you beat me to it, went back to correct/edit that and saw your post...

If you want the 5 outputs you can use Charlieplexing to control 6 LEDs with 3 outputs...

 

I think your spot on there.

 

I'm not quite sure what you are asking...

 

Sorry I don't program in assembly...

 

mate, you were almost there don't give up and expect the work done for you, its just a bit of reading the datasheet, and bit masking will solve the issues.

GP3 is input only, I can't find on my copy of the datasheet what external pin this lines up to.

GP3 is not an analogue input unfortunately as hexreader said. You need to use GP0, GP1, GP2, or GP4 as the input. Choose one of these to connect the POT input to control the speed.

The only solution right now I can think of, without using a different variant of the PIC that will suit your needs is with 3 AND gates and 2 NOT Gates.
LED0:GP1
LED1:GP2
LED2:GP4&NOT GP5
LED3:GP5 &NOT GP4
LED4:GP4& GP5

Below I will try to attempt to help for the logic. This assumes that the code you orginally posted works. And there is no guarantee that my hack on it will work, it just is my way of communicating to you there is solution to the logic problems as I believe there is a language barrier here.

Note: I haven't got the patients to include the logic using the Analogue module. Though all you need to do is to read the analogue value and make it the value you are pushing into your delay routine. this will allow you to turn the POT the AN0 10 bit value will change proportionally.

GP0:AN):AnalogueIn
GP1ut:LED0
GP2ut:LED1
GP3:N/A
GP4&NOTGP5ut:LED2
GP5&NOTGP4ut:LED3
GP4 & GP5: out: LED4

list p=12f675 ; list directive to define processor
#include <p12f675.inc> ; processor specific variable definitions
__CONFIG _INTRC_OSC_NOCLKOUT & _WDT_OFF & _PWRTE_ON & _MCLRE_OFF & _CP_OFF & _CPD_ON
ERRORLEVEL -302
CBLOCK 0x020
Delay: 1 ; contor delay 100uS
Delay1: 1 ; contor delay 10mS
Delay2: 1 ; contor delay 1S
TEMP: 1 ; contor flash
ENDC
BANK0 MACRO ; MACRO DEFINITIONS ___ Selects register bank 0
BCF STATUS,RP0 ; clear bank select bits
ENDM
BANK1 MACRO ; Selects register bank 1
BSF STATUS,RP0 ;
ENDM
DISABLE_IRQ MACRO ; disable global irq
LOCAL STOP_INT
START_INT
BSF INTCON,GIE ; Enable global interrupt
BTFSS INTCON,GIE ; check if disabled
GOTO START_INT ; nope, try again
ENDM
ORG 0x000 ; processor reset vector
goto MAIN ; go to beginning of program
ORG 0x004 ; interrupt vector location
RETFIE ; return from interrupt
ORG 0x010; MAIN ROUTINE START HERE
MAIN:
Init_Prog:
BANK1 ; int osc calibration
call 0x3FF ; get the calibration value
movwf OSCCAL
BANK0
DISABLE_IRQ ; disable irqs / dezactivare intreruperi
call Init_Ports ; ports init / initializare portur
Prog_Loop:
BANK0

MOVLW D'8
MOVWF TEMP
SYS_1_1
MOVLW B'00000010' ;GP1
MOVWF GPIO
CALL DELAY
MOVLW B'00000100' ;GP2
MOVWF GPIO
CALL DELAY
MOVLW B'00010000' ; GP4 - note we skiped the GP3
MOVWF GPIO
CALL DELAY
MOVLW B'00100000' ; GP5
MOVWF GPIO
CALL DELAY
MOVLW B'00110000' ; GP4 & GP5 if you wire up and AND Gate you will have another led when GP4 and GP5 are both high
MOVWF GPIO
CALL DELAY
MOVLW B'00100000' ; GP5
MOVWF GPIO
CALL DELAY
MOVLW B'00010000' ; GP4
MOVWF GPIO
CALL DELAY
MOVLW B'00000100' ; GP2
MOVWF GPIO
CALL DELAY
MOVLW B'00000010' ; GP1
MOVWF GPIO
CALL DELAY
DECFSZ TEMP,1
GOTO SYS_1_1


goto Prog_Loop
;;-------------------------------------
movlw 500
movwf Delay
DELAY
decfsz Delay,f
goto DELAY
decfsz Delay1,f
goto DELAY

;---------------------
Init_Ports:
BANK0 ; Bank 0
clrf GPIO ; 1)Status of pins: GPIO (GPIO=0 <ViL, =1 >ViH)
movlw B'00111111' ; 2)Comparator configuration
movwf CMCON ; Set GP<2:0> digital IO (comparator Off)
BANK1 ; Bank 1
bcf OPTION_REG,5 ; 3)TMR0 clock source select: Internal instruction cycle clock (CLKOUT)
bsf OPTION_REG,7 ; 4)GPIO pull-ups: is disabled
clrf WPU ; 5)Clear weak pull-up register
clrf IOC ; 6)Clear Interrupt-on-change register

movlw B'00000000' ; pins 3 & 4 are inputs and pins 2,5,6,7 are outputs
movwf TRISIO

; clrf ANSEL ; 8)* xxxx ANS<3..0> =0 digital I/O, =1 analog input
movlw b'00001001' ; pin GP3 is NA so input by default and GP0/AN0 is analoge in,
movwf ANSEL




BANK0
return
org 3FFh
retlw 0x9C ;
;-----------------------------------------------------------------------------
END ; directive 'end of program'
;-----------------------------------------------------------------------------2:0

 

If this is only driving LEDs as I stated previous use Charlieplexing, and take advantage of the tri-states of the pins...

GPIO.0 Analog Input, use this to read POT value

GPIO.1 Charlieplex 0
GPIO.2 Charlieplex 1
GPIO.4 Charlieplex 2

GPIO.5 Not used, could be used to expand the Charlieplex array to control up to 12 LEDs

Control over 6 LEDs with 3 pins...



When GPIO.1 =1 and GPIO.2 =0 and GPIO.4 = INPUT Then LED.1 on
When GPIO.1 =0 and GPIO.2 =1 and GPIO.4 = INPUT Then LED 2 on
When GPIO.2 =1 and GPIO.4 =0 and GPIO.1 = INPUT Then LED.3 on
When GPIO.2 =0 and GPIO.4 =1 and GPIO.1 = INPUT Then LED.4 on

Ignore the following if you only need 4 LEDs...

When GPIO.1 =0 and GPIO.4 =1 and GPIO.2 = INPUT Then LED.5 on
When GPIO.1 =1 and GPIO.4 =0 and GPIO.2 = INPUT Then LED.6 on

 

Thanks CocaCola

I'm enlightened with that handy explanation in Charlieplexing. Much better then my solution using gates.