void main(int argc, char** argv)
...
(SetupClock());
(IntADC());
...
#include <p18cxxx.h>
#include <timers.h>
/********************************************************************
* Function Name: ReadTimer1 *
* Return Value: char: Timer1 16-bit value *
* Parameters: void *
* Description: This routine reads the 16-bit value from *
* Timer1. *
********************************************************************/
unsigned int ReadTimer1(void)
{
union Timers timer;
timer.bt[0] = TMR1L; // Read Lower byte
timer.bt[1] = TMR1H; // Read upper byte
return (timer.lt); // Return the 16-bit value
} /******************************************************************************
// * TIMERS PERIPHERAL LIBRARY HEADER FILE
******************************************************************************
* FileName: timers.h
* Dependencies: See include below
* Processor: PIC18
* Compiler: MCC18
* Company: Microchip Technology, Inc.
...
*****************************************************************************/
#include <pconfig.h>
/* PIC18 timers peripheral library. */
/* used to hold 16-bit timer value */
union Timers
{
unsigned int lt;
char bt[2];
};
// compiled for PIC 12F675 using MikroC v8;
void main ()
{
CMCON = 0b00000111; // comparators OFF
GPIO.F2 = 1;
}
// result;
$0000 $2804 GOTO _main
$0004 $ _main:
;blah.c,19 :: void main ()
;blah.c,23 :: CMCON = 0b00000111; // comparators OFF
$0004 $3007 MOVLW 7
$0005 $1303 BCF STATUS, RP1
$0006 $1283 BCF STATUS, RP0
$0007 $0099 MOVWF CMCON
;blah.c,26 :: GPIO.F2 = 1;
$0008 $1505 BSF GPIO, 2
;blah.c,30 :: }
$0009 $2809 GOTO $
---------------------------------------------------
// compiled for PIC 18F1320 using MikroC v8;
void main ()
{
TRISA = 0b00010000;
LATA.F2 = 1;
}
// result;
$0000 $EF04 F000 GOTO _main
$0008 $ _main:
;blah.c,1 :: void main ()
;blah.c,3 :: TRISA = 0b00010000;
$0008 $0E10 MOVLW 16
$000A $6E92 MOVWF TRISA, 0
;blah.c,4 :: LATA.F2 = 1;
$000C $8489 BSF LATA, 2, 0
;blah.c,5 :: }
$000E $D7FF BRA $
---------------------------------------------------
// compiled for PIC 12F675 using MikroC PRO v4.15;
void main ()
{
CMCON = 0b00000111; // comparators OFF
GPIO.F2 = 1;
}
// result;
;blah.c,1 :: void main ()
;blah.c,3 :: CMCON = 0b00000111; // comparators OFF
MOVLW 7
MOVWF CMCON+0
;blah.c,4 :: GPIO.F2 = 1;
BSF GPIO+0, 2
;blah.c,5 :: }
GOTO $+0
---------------------------------------------------
// compiled for PIC 18F1320 using MikroC PRO v4.15;
void main ()
{
TRISA = 0b00010000;
LATA.F2 = 1;
}
// result;
;blah.c,1 :: void main ()
;blah.c,3 :: TRISA = 0b00010000;
MOVLW 16
MOVWF TRISA+0
;blah.c,4 :: LATA.F2 = 1;
BSF LATA+0, 2
;blah.c,5 :: }
GOTO $+0
Search Pages
16F628 278
16F877 188
16F84 298
RMW >300
16F1519 <1 (6 posts total)
I provided FOUR cases of dissassembly proof above of exactly what two of their compilers ACTUALLY DO. And their web page states that writing to the ports using their compiler has RMW issues (as do all PIC C compilers).
/*
* File: newmain1.c
* Author: chris
*
* Created on August 19, 2013, 6:11 PM
*/
#include <xc.h>
#include <stdio.h>
#include <stdlib.h>
#include <htc.h>
#define _XTAL_FREQ 8000000
#define RA5 (PORTAbits.RA5)
#pragma config FOSC = INTOSC, CLKOUTEN = OFF, PLLEN = OFF, WDTE = OFF, LVP = OFF, MCLRE = ON
void SetupClock (void) //set up clock
{
OSCCON = 0b01110010;
}
void IntADC (void) //setup ADC
{
//** Initalise Ports FOR ADC **//
//PORTA = 0x00;
TRISA = 0b00001111; //RA4,RA5 outputs, RA0, RA1 Inputs
//** Set Up ADC Parameters **//
ANSELA = 0b00000111; //RA4 Output, RA5 Output, all others input
ADRESH = 0x00; //Set the analog high bits to 0
ADRESL = 0x00;
ADCON1 = 0b10010000; // Sets ADRESL to contain the first 7 bits of conversion, ADRESH will have the final 3 bits.
} // void InitADC(void)
int main (){
SetupClock();
IntADC();
unsigned int ADCresult;
ADCresult = 0;
ADCON0bits.ADON = 1; //Turns on ADC module
ADCON0bits.CHS = 2; //AN0 as input
while (1)
{
ADCON0bits.GO = 1; //Starts Conversion
__delay_us(35);
while (ADCON0bits.GO_nDONE); //wait till ADC conversion is over
{
ADCresult = (ADRESH <<8 | ADRESL) ;
if (ADCresult > 0b1000000000)
RA5 = 1;
else
RA5 = 0;
return ADCresult; //THIS is important. Function doesnt seem to work without it.
//also removed the continue statement.
}
}
}/*
* File: ADC_Ver1
* Author: chris
* This is Basic ADC Code for the PIC12F1840 Series. Should be portable to others
* Created on August 19, 2013, 6:11 PM
*/
#include <xc.h>
#include <stdio.h>
#include <stdlib.h>
#include <htc.h>
#define _XTAL_FREQ 8000000
#define RA5 (PORTAbits.RA5)
#pragma config FOSC = INTOSC, CLKOUTEN = OFF, PLLEN = OFF, WDTE = OFF, LVP = OFF, MCLRE = ON
void SetupClock (void) //set up clock
{
OSCCON = 0b01110010;
}
void IntADC (void) //setup ADC
{
//** Initalise Ports FOR ADC **//
//PORTA = 0x00;
TRISA = 0b00001111; //RA4,RA5 outputs, RA0, RA1 Inputs
//** Set Up ADC Parameters **//
ANSELA = 0b00000111; //RA4 Output, RA5 Output, all others input
ADRESH = 0x00; //Set the analog high bits to 0
ADRESL = 0x00;
ADCON1 = 0b10010000; // Sets ADRESL to contain the first 7 bits of conversion, ADRESH will have the final 3 bits.
} // void InitADC(void)
void main ()
{
SetupClock();
IntADC();
unsigned int ADCresult; //ADCresult for Channel x
ADCresult = 0;
ADCON0bits.ADON = 1; //Turns on ADC module
ADCON0bits.CHS = 2; //AN2 as input
ADCON0bits.GO = 1; //Starts Conversion
__delay_us(35); //small delay to get value
while (ADCON0bits.GO_nDONE); //wait till ADC conversion is over
{
ADCresult = (ADRESH <<8 | ADRESL) ;
if (ADCresult > 768)
RA5 = 1;
else
RA5 = 0;
}
}
/*
* File: Battery Charger Controller
* Author: chris
* Checks if the Battery is equal to, or greater than the charge voltage, then turns off a PFET
* and turns on a "done" led. But for now, turns on a LED when values >512
* Created on August 27, 2013, 6:11 PM
*/
#include <xc.h>
#include <stdio.h>
#include <stdlib.h>
#include <htc.h>
#define _XTAL_FREQ 8000000
#define RA5 (PORTAbits.RA5) //Charge LED
#define RA4 (PORTAbits.RA4) // PFET
#pragma config FOSC = INTOSC, CLKOUTEN = OFF, PLLEN = OFF, WDTE = OFF, LVP = OFF, MCLRE = ON
void SetupClock (void) //set up clock
{
OSCCON = 0b01110010;
}
void IntADC (void) //setup ADC
{
//** Initalise Ports FOR ADC **//
//PORTA = 0x00;
TRISA = 0b00001111; //RA4,RA5 outputs, RA0, RA1 Inputs
//** Set Up ADC Parameters **//
ANSELA = 0b00000111; //RA4 Output, RA5 Output, all others input
ADRESH = 0x00; //Set the analog high bits to 0
ADRESL = 0x00;
ADCON1 = 0b10010000; // Sets ADRESL to contain the first 7 bits of conversion, ADRESH will have the final 3 bits.
ADCON0bits.ADON = 1;
} // void InitADC(void)
void main (){
SetupClock();
IntADC();
unsigned int Vcharge; //ADCresult for Channel x
unsigned int Vcurrent;
unsigned int Vbattery;
Vcharge, Vcurrent, Vbattery = 0;
ADCON0bits.CHS = 2; //AN2 as input
__delay_ms (10);
ADCON0bits.GO = 1;
//__delay_ms (10); //small delay to get value
while (ADCON0bits.GO_nDONE); //wait till ADC conversion is over
{
Vcharge = (ADRESH <<8 | ADRESL) ;
}
__delay_ms (100);
IntADC();
ADCON0bits.CHS = 0;
__delay_ms (10);
ADCON0bits.GO = 1;
// __delay_ms (10);
while (ADCON0bits.GO_nDONE);
{
Vcurrent = (ADRESH <<8 | ADRESL);
}
//Vbattery = Vcharge - Vcurrent;
if (Vcharge >512)
{
RA4 = 1;
}
else
RA4 = 0;
if (Vcurrent > 512 )
{
RA5 = 1;
}
else
RA5 = 0;
}
