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

[jimseng]

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]

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!



'************************************************* ***********************************
'* 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]

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]

Yup!

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

Robert

[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.

Here it is as an attachment

6363

[Demon]

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


'************************************************* ***********************************
'* 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]

Cheers Robert, It was going to be something simple.