Can someone show me how to set ccp3 to RC6 on pic 18f24k22

**jimseng** · - 22nd March 2012, 17:07

Hello.
Yes I have been reading the data sheet and trying to understand how to do this but I don't really understand datasheets. Maybe if I can get this right I will help me understand them better.
Anyway. For now my hpwm 3,127,1000 command is appearing on port rb5. According to the data sheet it should default to RC6 but it isn't. I don't know why and I can't figure out how to change it.

Thanks

**BH_epuk** · - 22nd March 2012, 20:16

Hi,

Sorry I've been meaning to post the code I had for this, but have problems with the computer that has the file on.

The CCP3 output is set in the configuration bits, I'll have a look at the datasheet in a bit and give a better pointer.

EDIT: the joy of USB disks, found it!

Code:

'************************************************************************************
'*   HPWM Demo Code for PIC18F24K22                                            *
'*                                                                                  *
'*                                                                                  *
'*                                                                                  *
'************************************************************************************



asm
        __CONFIG    _CONFIG1H, _FOSC_INTIO67_1H & _PLLCFG_OFF_1H & _PRICLKEN_ON_1H & _FCMEN_OFF_1H & _IESO_OFF_1H
        __CONFIG    _CONFIG2L, _PWRTEN_ON_2L & _BOREN_OFF_2L & _BORV_285_2L
        __CONFIG    _CONFIG2H, _WDTEN_NOSLP_2H & _WDTPS_512_2H
        __CONFIG    _CONFIG3H, _CCP2MX_PORTB3_3H & _PBADEN_OFF_3H & _CCP3MX_PORTB5_3H & _HFOFST_OFF_3H & _T3CMX_PORTB5_3H & _P2BMX_PORTB5_3H & _MCLRE_EXTMCLR_3H
        __CONFIG    _CONFIG4L, _STVREN_ON_4L & _LVP_OFF_4L & _XINST_OFF_4L & _DEBUG_OFF_4L
        __CONFIG    _CONFIG5L, _CP0_OFF_5L & _CP1_OFF_5L 
        __CONFIG    _CONFIG5H, _CPB_OFF_5H & _CPD_OFF_5H
        __CONFIG    _CONFIG6L, _WRT0_OFF_6L & _WRT1_OFF_6L 
        __CONFIG    _CONFIG6H, _WRTC_OFF_6H & _WRTB_OFF_6H & _WRTD_OFF_6H  
        __CONFIG    _CONFIG7L, _EBTR0_OFF_7L & _EBTR1_OFF_7L 
        __CONFIG    _CONFIG7H, _EBTRB_OFF_7H       

ENDASM

Define OSC 8



LED2    var PORTA.0     ' Status LED
LED1    var PORTA.1     ' Status LED 
RA2     var PORTA.2     '     
RA3     var PORTA.3     '   
RA4     var PORTA.4     '    
RA5     var PORTA.5     ' 
RA6     VAR PORTA.6     ' Xtal
RA7     var PORTA.7     ' Xtal

PWM1    VAR PORTB.0     ' CH1 PWM Output
RB1     VAR PORTB.1     ' 
RB2     VAR PORTB.2     ' 
PWM2    VAR PORTB.3     ' CH2 PWM Output
RB4     VAR PORTB.4     ' Spare
PWM3    VAR PORTB.5     ' CH3 PWm Output
RB6     VAR PORTB.6     ' PGC / TX2
RB7     VAR PORTB.7     ' PGD / RX2

RC0     var PORTC.0     '  
RC1     var PORTC.1     '    
RC2     var PORTC.2     '      
RC3     var PORTC.3     '    
RC4     var PORTC.4     '    
RC5     var PORTC.5     ' 
TXD1    var PORTC.6     ' TX1
RXD1    var PORTC.7     ' RX1

RE0     VAR PORTE.0     ' VPP/nMCLR
                     
ch1     var byte
ch2     var byte
ch3     var byte

update  var bit


OSCCON = 100010          ' Set internal 8Mhz OSC
OSCCON2 = 001100
while OSCCON.2 = 0 : WEND   ' Wait for stable flag

clear


PORTA = 100000       ' Setup ports
PORTB = 000000
PORTC = 000000

ANSELA = 000000
ANSELB = 000000
ANSELC = 000000      ' Config A2d

ADCON2 = 101101
ADCON1 = 001000
ADCON0 = 011000

VREFCON0 = 100000    ' Enable voltage referance 2.048V

TRISA = 000000       ' Setup TRIS
TRISB = 000110
TRISC = 011000

    GOTO start
    
'-------------------------------------------------------------------------------
' Main program starts here
'-------------------------------------------------------------------------------


start:

    ch1 = 64            ' load some levels for the outputs
    ch2 = 128
    ch3 = 192            
    update = 1            ' set flag to update PWM outputs
    

'-------------------------------------------------------------------------------
' Main Loop 
'-------------------------------------------------------------------------------
    
    
main:   

    if update then        ' If the flag is set to update then
        hpwm 4,ch1,500        ' load the PWM outputs with new values
        hpwm 3,ch2,500
        hpwm 2,ch3,500    
        update = 0        ' clear update flag
    endif
    
    
    goto main
     
         
 
    end

**jimseng** · - 23rd March 2012, 11:59

Thanks for that. Actually I couldn't get your version to work but this does:
asm
config FOSC = INTIO67 , CCP2MX = PORTC1, CCP3MX = PORTC6
endasm

I think I have learned something and I am almost in danger of being able to understand data sheets. It's all in the mpasm pic inc file isn't it?

**Demon** · - 23rd March 2012, 13:33

Yup!

PICs, CONFIGS and Oscillator Settings for Beginners:
http://www.picbasic.co.uk/forum/showthread.php?t=15982

Robert

**BH_epuk** · - 23rd March 2012, 20:45

Don't know what happend to the code i posted earlier in the thread, it seems to have been reformatted missing bits so would never work.

Here it is as an attachment

HPWM.txt

**Demon** · - 23rd March 2012, 20:50

Originally Posted by BH_epuk

Don't know what happend to the code i posted earlier in the thread, it seems to have been reformatted missing bits so would never work...

The top left icon above the post box has two As; click on it to get SOURCE mode. That will leave your code intact.

To have your post box in SOURCE mode by default:
- click on SETTINGS at top right.
- click on General Settings on left side.
- scroll down to Miscellaneous Options.
- click on Standard Editor - Extra formatting controls

Robert

Code:

'************************************************************************************
'*   HPWM Demo Code for PIC18F24K22		                                    *
'*                                                                                  *
'*                                                                                  *
'*                                                                                  *
'************************************************************************************



asm
        __CONFIG    _CONFIG1H, _FOSC_INTIO67_1H & _PLLCFG_OFF_1H & _PRICLKEN_ON_1H & _FCMEN_OFF_1H & _IESO_OFF_1H
        __CONFIG    _CONFIG2L, _PWRTEN_ON_2L & _BOREN_OFF_2L & _BORV_285_2L
        __CONFIG    _CONFIG2H, _WDTEN_NOSLP_2H & _WDTPS_512_2H
        __CONFIG    _CONFIG3H, _CCP2MX_PORTB3_3H & _PBADEN_OFF_3H & _CCP3MX_PORTB5_3H & _HFOFST_OFF_3H & _T3CMX_PORTB5_3H & _P2BMX_PORTB5_3H & _MCLRE_EXTMCLR_3H
        __CONFIG    _CONFIG4L, _STVREN_ON_4L & _LVP_OFF_4L & _XINST_OFF_4L & _DEBUG_OFF_4L
        __CONFIG    _CONFIG5L, _CP0_OFF_5L & _CP1_OFF_5L 
        __CONFIG    _CONFIG5H, _CPB_OFF_5H & _CPD_OFF_5H
        __CONFIG    _CONFIG6L, _WRT0_OFF_6L & _WRT1_OFF_6L 
        __CONFIG    _CONFIG6H, _WRTC_OFF_6H & _WRTB_OFF_6H & _WRTD_OFF_6H  
        __CONFIG    _CONFIG7L, _EBTR0_OFF_7L & _EBTR1_OFF_7L 
        __CONFIG    _CONFIG7H, _EBTRB_OFF_7H       

ENDASM

Define OSC 8



LED2    var PORTA.0     ' Status LED
LED1    var PORTA.1     ' Status LED 
RA2     var PORTA.2     '     
RA3     var PORTA.3     '   
RA4     var PORTA.4     '    
RA5     var PORTA.5     ' 
RA6     VAR PORTA.6     ' Xtal
RA7     var PORTA.7     ' Xtal

PWM1    VAR PORTB.0     ' CH1 PWM Output
RB1     VAR PORTB.1     ' 
RB2     VAR PORTB.2     ' 
PWM2    VAR PORTB.3     ' CH2 PWM Output
RB4     VAR PORTB.4     ' Spare
PWM3    VAR PORTB.5     ' CH3 PWm Output
RB6     VAR PORTB.6     ' PGC / TX2
RB7     VAR PORTB.7     ' PGD / RX2

RC0     var PORTC.0     '  
RC1     var PORTC.1     '    
RC2     var PORTC.2     '      
RC3     var PORTC.3     '    
RC4     var PORTC.4     '    
RC5     var PORTC.5     ' 
TXD1    var PORTC.6     ' TX1
RXD1    var PORTC.7     ' RX1

RE0     VAR PORTE.0     ' VPP/nMCLR
                     
ch1     var byte
ch2     var byte
ch3     var byte

update  var bit


OSCCON = %01100010          ' Set internal 8Mhz OSC
OSCCON2 = %00001100
while OSCCON.2 = 0 : WEND   ' Wait for stable flag

clear


PORTA = %00100000       ' Setup ports
PORTB = %00000000
PORTC = %00000000

ANSELA = %00000000
ANSELB = %00000000
ANSELC = %00000000      ' Config A2d

ADCON2 = %10101101
ADCON1 = %00001000
ADCON0 = %00011000

VREFCON0 = %10100000    ' Enable voltage referance 2.048V

TRISA = %00000000       ' Setup TRIS
TRISB = %10000110
TRISC = %10011000

    GOTO start
    
'-------------------------------------------------------------------------------
' Main program starts here
'-------------------------------------------------------------------------------


start:

    ch1 = 64			' load some levels for the outputs
    ch2 = 128
    ch3 = 192			
    update = 1			' set flag to update PWM outputs
    

'-------------------------------------------------------------------------------
' Main Loop 
'-------------------------------------------------------------------------------
    
    
main:   

    if update then		' If the flag is set to update then
        hpwm 4,ch1,500		' load the PWM outputs with new values
        hpwm 3,ch2,500
        hpwm 2,ch3,500    
        update = 0		' clear update flag
    endif
    
    
    goto main
     
         
 
    end

**BH_epuk** · - 23rd March 2012, 20:57

Cheers Robert, It was going to be something simple.

Thread: Can someone show me how to set ccp3 to RC6 on pic 18f24k22

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Can someone show me how to set ccp3 to RC6 on pic 18f24k22

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