TMR2 BUG!!

[Lakis]

Hello,
i use the 12f1822 and trying the PWM, if CCPR1L=0 it throws the messages
TMR2 BUG!! value = 0x3d09c7 which is greater than 0x100 .
i try ed and at startup with zero duty cycle and makes the same messages
CCP1CONbits.DC1B = 0
CCPR1L = 0

[Lakis]

update
the error occurs if CCP1CONbits.DC1B >0 and CCPR1L = 0
(DC values 3 and less)

[Roy Rankin]

I have tried the following code (with RA5 set as output) and do not see the problem. I am trying to fix the cases which cause the message.
BANKSEL APFCON
bsf APFCON,0 ;PA1 RA5
BANKSEL CCPR1L
clrf CCPR1L
movlw 0x0f
movwf CCP1CON
BANKSEL PR2
movlw 0x0f
movwf PR2
bsf T2CON,TMR2ON
goto $

[Lakis]

i use RA2 for output. Compile and run it, makes the error

define NO_BIT_DEFINES

include <pic14regs.h></pic14regs.h>

include <stdint.h></stdint.h>

//sdcc -mpic14 -p12f1822 --use-non-free pic-supply.c
// pk2cmd -B/usr/share/pk2 -ppic12F1822 -Fpic-supply.hex -M -Y
//pic12f1822 2pin 7=RA0-AN0, 6=RA1-AN1 ADC, 2pin USART 2=RA5-RC, 3=RA4-TX, 1pin out 5=RA2 =5pins scope.ch0 = 'porta2'
__code uint16_t __at (_CONFIG1) __configword = _FOSC_INTOSC & _BOREN_OFF & _MCLRE_OFF & _PWRTE_OFF & _WDTE_OFF & _CP_OFF & _CPD_OFF ;

void main (void){
init:
INTCONbits.GIE = 1 ; //Global interrupts enabled
INTCONbits.PEIE = 1 ; //Periferal interrupts enabled
PIE1bits.ADIE = 1 ; //adc interrupt
PIE1bits.TMR1IE = 1 ; //Timer1 interrupts enabled
//PIE1bits.TMR2IE = 1 ; //Timer2 interrupts enabled
PIE1bits.RCIE = 1 ;
OSCCON = 0b11101000 ; //4MHz
CM1CON0bits.C1ON = 0 ; //Comparator OFF CMxCON0:
MDCON = 0 ;
ANSELA = 0x00 ;
//IOCA = 0x00 ; //Interrupt on change off
WPUA = 0x00 ; //pullups off
TRISA = 0b00100011 ; //make all outputs except RA0, RA1, RA5 =input
PORTA = 0 ; //make all pins low

APFCONbits.RXDTSEL = 1 ; //RXDT on RA5
APFCONbits.TXCKSEL = 1 ; //TXCK on RA4
APFCONbits.CCP1SEL = 0 ; //P1A on RA2 pin5
ANSELA = 0b00000011 ; //AN0, AN1 analog input (prota prepei set APFCONbits)
RCSTAbits.SPEN = 1 ;
TXSTAbits.SYNC = 0 ;
TXSTAbits.BRGH = 1 ;
TXSTAbits.TXEN = 1 ;
SPBRG = 25 ;
RCSTAbits.CREN = 1 ;

FVRCON = 0b11000001 ; //Vref enabled 1.024V
ADCON0 = 0x00 ;
ADCON1 = 0b11010011 ; //adfm=1, //f/16=62500Khz 16us, //Vref internal
T1CON = 0b00100001 ; //clock instruction, prescaler :4, timer1 ON
//TMR1L = 0 ;
TMR1H = 0x0B ; //65555-3055 =62500 x4 =250000
TMR1L = 0xBD ;
PR2 = 66 ;
CCP1CON = 0b00111100 ;
//CCP1CONbits.P1M = 0b00 ; //Output Config, only P1A modulated
//CCP1CONbits.DC1B = 0b01; //2 first bits of Duty Cycle
//CCP1CONbits.CCP1M = 0b1100 ;//PWM Mode active high or low
CCPR1L = 0 ;//8 last bits of Duty Cycle
PIR1bits.TMR2IF = 0 ; //Clear Interrupt Flag
T2CONbits.T2CKPS = 0 ; //TIMER2 prescaler=1
T2CONbits.TMR2ON = 1 ; //TIMER2 ON
//init telos

arxi:

goto arxi;
}

[Roy Rankin]

Critical condition for bug is CCP PWM duty cycle greater than zero and less than four with precount=1. I have committed, on SVN, a greatly modified TMR2 modules (in 14bit-timers) which passes my tests of this problem. Please try the latest SVN.

Regards,
Roy Rankin

[Lakis]

Yes it works OK.
One problem i had was with lyx
Warning: 544: Format not supported.
Warning: Quitting.

**Error: Conversion script failed

----------------------------------------**

/root/Downloads/lakis/gpsim/gpsim-code-r2564-trunk/doc/gpsim.lyx is from a newer version of LyX and the lyx2lyx script failed to convert it.
LyX failed to load the following file: /root/Downloads/lakis/gpsim/gpsim-code-r2564-trunk/doc/gpsim.lyx
i copied from older version gpsim.lyx to bypass it.
Please give a direction
I have a usb card ch341A with parallel port, how to make it communicate with gpsim as a real module and use real elements.