Hwpw

[l_gaminde]

Im running a few chips 16f876a at 20 mhz, 18f26k22 10mhz with 4x speed so 40mhz

Even using timer 1 and timer 2 with two different ports, portc1 and portc2 you can not get two different PW is this correct

I have also noticed at times one pulse is half the duty cycle other times it can be changed this could be because i used the same timer for both

define OSC 40

OSCCON2.7 = 1 ' SYSTEM CLOCK 1=4XPLL 0= OSCILLATOR OTHER THAN 4XPLL
TRISA = %11111010
TRISB = %11111100
ADCON1 = %0110
ADCON0 = %000

T0CON = %00000000
INTCON = %00000000
INTCON2 = %00000000

LED VAR PORTA.5 ' Assign name "LED" to PORTA.5
HIGH LED
PAUSE 2000
LOW led
PWM PORTA.5, 64, 6000

DEFINE CCP1_REG PORTC ' USED FOR HWPW
DEFINE CCP1_BIT 2 ' USED FOR HWPW PORTC PIN 2
DEFINE HPWM2_TIMER1 ' DEFINE TIMER USE FOR PWM

DEFINE CCP2_REG PORTC ' USED FOR HWPW
DEFINE CCP2_BIT 1 ' USED FOR HWPW PORTC PIN 1
DEFINE HPWM1_TIMER2 ' DEFINE TIMER USE FOR PWM

HPWM 1, 128, 5000 ' OUTPUT PORTC.2
'HPWM 2, 64, 5000 ' OUTPUT PORTC.1

' HPWM 1, 128, 39000 ' HIGHEST HPWM @ 50% DUTY 78.06 khz
' HPWM 1, 128, 30000 ' HPWM @ 50% DUTY 60.19 khz
' HPWM 1, 128, 20000 ' HPWM @ 50% DUTY 39.96 khz
' HPWM 1, 128, 10000 ' HPWM @ 50% DUTY 19.98 khz
' HPWM 1, 128, 5000 ' HPWM @ 50% DUTY 9.99 khz
' HPWM 1, 128, 2441 ' LOWEST HPWM @ 50% DUTY 4.88 khz

[richard]

a pic18f26k22 can have 5 different pwm streams with 3 different frequencies all with individual duty cycles, old clunker chips like 16f876a are much less capable of course

here is 3 streams 3 frequencies
i find the hpwm command pretty inflexible and seldom use it [the clock defines are not correct in mho] , pwm is not difficult to setup manually

'****************************************************************
'*  Name    : PWM demo.pbp                                      *
'*  Author  :  Richard                                          *
'*  Notice  :                                                   *
'*          :                                                   *
'*  Date    : 21/12/2024                                        *
'*  Version : 1.0                                               *
'*  Notes   : TMR2 CCP4 10K, TMR4 CCP5 12.5K,  TMR6 CCP1 8K     *
'*          :18f26k22 @64Mhz                                    *
'****************************************************************




#CONFIG
  CONFIG  FOSC = INTIO67
  CONFIG  PLLCFG = ON
  CONFIG  PRICLKEN = ON
  CONFIG  FCMEN = OFF
  CONFIG  IESO = OFF
  CONFIG  PWRTEN = ON
  CONFIG  BOREN = SBORDIS
  CONFIG  BORV = 190
  CONFIG  WDTEN = ON
  CONFIG  WDTPS = 32768
  CONFIG  CCP2MX = PORTC1
  CONFIG  PBADEN = OFF
  CONFIG  CCP3MX = PORTB5                                
  CONFIG  T3CMX = PORTC0
  CONFIG  HFOFST = ON
  CONFIG  P2BMX = PORTB5
  CONFIG  MCLRE = EXTMCLR
  CONFIG  STVREN = ON
  CONFIG  LVP = OFF
  CONFIG  XINST = OFF
  CONFIG  DEBUG = OFF
  CONFIG  CP0 = OFF
  CONFIG  CP1 = OFF
  CONFIG  CP2 = OFF
  CONFIG  CP3 = OFF
  CONFIG  CPB = OFF
  CONFIG  CPD = OFF
  CONFIG  WRT0 = OFF
  CONFIG  WRT1 = OFF
  CONFIG  WRT2 = OFF
  CONFIG  WRT3 = OFF
  CONFIG  WRTC = OFF
  CONFIG  WRTB = OFF
  CONFIG  WRTD = OFF
  CONFIG  EBTR0 = OFF
  CONFIG  EBTR1 = OFF
  CONFIG  EBTR2 = OFF
  CONFIG  EBTR3 = OFF
  CONFIG  EBTRB = OFF
#ENDCONFIG  
    DEFINE OSC 64
    ANSELB=0
    ANSELC=0
    ANSELA=0
    trisa=% 11101111
    trisb=% 11111110
    trisc=% 11111001
    OSCCON=$70
    OSCTUNE.6=1
    
    T2CON=6         ;PRESCALE 16 TMR ON
    T4CON=6         ;PRESCALE 16 TMR ON
    T6CON=6         ;PRESCALE 16 TMR ON
    PR2=$63         ;10 KHZ
    PR4=$4F         ;12.5 KHZ
    PR6=$7C         ;8 KHZ
    CCP4CON = $0C   ;PWM MODE + DUTY LSB 2 BITS
    CCPR4L  = $32   ;DUTY MSB 8 BITS    
    CCP5CON = $0C   ;PWM MODE + DUTY LSB 2 BITS
    CCPR5L  = $27   ;DUTY MSB 8 BITS
    CCP1CON = $0C   ;PWM MODE + DUTY LSB 2 BITS
    CCPR1L  = $3E   ;DUTY MSB 8 BITS    
    CCPTMRS1  = 4   ;TMR2 CCP4, TMR4 CCP5
    CCPTMRS0  = 2   ;TMR6 CCP1 


main:
goto main

[l_gaminde]

I ran your program and according to the scope they all are running the same freq. with different pulse width

[richard]

I ran your program and according to the scope they all are running the same freq. with different pulse width

not really they all are running the same pulse width with different freq.

[l_gaminde]

Well, I don't know what to say. I get all the same frequency with different pulse width.
Even the program shows different pulse width.
I even went back to the pick basic plus and i'm running for with four different timers, and they all run the same frequency, and if you set it for a different frequency, they shut down pulse width, I can control

[richard]

Even the program shows different pulse width.

what do you mean ,that makes little sense

Well, I don't know what to say. I get all the same frequency with different pulse width.

my code works perfectly on the simulator and the actual hardware
post your code and schematic .

[richard]

first question how do you get the code box to post into

https://www.picbasic.co.uk/forum/showthread.php/19594

I did change the numbering to BIN so when looking in the manual I could line things up with the proper bits

it can be informative for some registers for most its just unnecessary clutter

its certainly not helped you get this correct

CCPTMRS0 = %1011010 ; TIMER6 = CCP1, TIMER4 = CCP3

setting C2TSEL<1:0>: CCP2 Timer Selection bits to %11 "reserved" is not a good practice
CCPTMRS0 = %01000010 ; TIMER6 = CCP1, TIMER4 = CCP3 is preferable

[l_gaminde]

Yes the 11 i wasn't sure how to deal with it. So I put it in there if it didn't work. I would have pulled it right out, but it did work in this case. Remember, it's been 15 years since I've done any programming. I wasn't sure how to deal with some of this. So what button do you use to put code in to the forum messages.

[l_gaminde]

Nevermind, I found it a pound tag.

[l_gaminde]

Where can I get this program

mister e's pic multi-calc