Program help NEEDED

colingribben — Tue, 26 Apr 2011 15:04:20 GMT

Hi all

I am trying to creat a program for a window cleaning gondola system. Using the Freescale HCS12 microcontroller and the Metroworks CodeWarrior Intergrated Development Environment. I will also be using the HCS12E128 target board.

I have written the following code and my program works but i am also trying to add in an interrupt so that an LED will blink every 0.5 seconds when the prgram is running. Here is my program below.

// Author:- C G

// Window cleaning gondola system

#include <hidef.h> /* common defines and macros */

#include <mc9s12e128.h> /* derivative information */

#pragma LINK_INFO DERIVATIVE “SampleS12”

Static int setpoint = 0;

//---------------------------------------------------------------------------------------------------------------

// Puts the following code into NOT BANKED FLASH MEMORY

//---------------------------------------------------------------------------------------------------------------

#pragma TRAP_PROC

#pragma CODE_SEG_NEAR_SEG NON_BANKED

//---------------------------------------------------------------------------------------------------------------

// Initialise peripherals

//---------------------------------------------------------------------------------------------------------------

#define PANIC 0x01 // Switch 0 PANIC button

#define GROUND 0x02 // Switch 1 Ground reached switch

#define DOWN_L 0x04 // Switch 2 DOWN LOW speed

#define DOWN_H 0x08 // Switch 3 DOWN HIGH speed

#define UP_L 0x10 // Switch 4 UP LOW speed

#define UP_H 0x20 // Switch 5 UP HIGH speed

#define PROXIMITY 0x40 // Switch 6 Ground proximity detector

#define ALARM 0x01 // Led0 PANIC alarm signal

#define ALARMOFF 0xFE

#define DOWN 0x02 // Led1 DOWN control output

#define DOWNOFF 0xFD

#define SPEED 0x04 // Led2 SPEED ratio control signal

#define SPEEDOFF 0xFB

#define LED3 0x08

#define LED4 0x10

#define LED5 0x20

#define LED6 0x40

#define OPERATIONAL 0x80 // Led7 System heatbeat

#define OPERATIONAL 0x80

//---------------------------------------------------------------------------------------------------------------

// Real Time interrupt routine

//---------------------------------------------------------------------------------------------------------------

Void RTIHan(void){/*periodic interrupt */

setpoint++; // Increment setpoint each time there is an interrupt

PTT^= 0x01; // Toggle Bit 0 of Port T

CRGFLG = 0x80; // Acknowledge by clearing RTIF (by writing a ‘1’// to the bit position)

#pragma CODE _SEG DEFAULT

#pragma CODE_SEG DEFAULT

//---------------------------------------------------------------------------------------------------------------

// Peripheral Initialization routine

//---------------------------------------------------------------------------------------------------------------

Void PeriphInit(void)

{

// Set up digital output

PTT = 0x00; // Clears port T[7..0]

DDRT = 0xFF; // Configures port T[7..0] as output

// Set up digital input (using ADT pins for digital input)

ATDDIEN0 = 0x00; // turn off pins 8 to 15

ATDDIEN1 = 0xff; // turn on pins 0-7

PERAD = 0xff; // turn on pullups 0-7

// Use port U as digital input from switches

DDRU = 0x00; // turn off pins 8 to 15

PERU = 0xff; // turn on pullups 0-7

}void RTIinit(void){

COPCTL = 0x00; // disable COP

DDRT = 0x80; // Port T bit 7 is an output to LED //

RTICTL = 0x7F; //Arm and set RTI //

CRGINT = 0x80; // enable RTI interrupt by setting RTIE bit //

}

//---------------------------------------------------------------------------------------------------------------

// Main Program:

//---------------------------------------------------------------------------------------------------------------

void main(void) //Main function

{

int swdata =0; // temporary storage of input data

int outdata=0; // temporary storage of output data

PeriphInit(); // Microcontroller initialization

EnableInterrupts; // Enables interrupts

do // loop while...

{

// get data for next cycle

swdata = PTU; // Read switches into temp variable

// if (panic AND !ground) OR // note ! means NOT

// if (alarm AND !ground) THEN set alarm ELSE clear alarm ;

if (

( (swdata & PANIC) && !(swdata & GROUND) )

|| // logical OR

( (outdata & ALARM) && !(swdata & GROUND) )

)

//then

(outdata = outdata | ALARM); // Turn single bit ON

else (outdata = outdata & ALARMOFF); // Turn single bit OFF

PTT = outdata; // show LEDs as set.

outdata=outdata; // does nothing - just for BREAKPOINT.

// if (down_l AND !ground) OR // note ! means NOT

// if (down_h AND !ground) OR

// if (alarm AND !ground) THEN set down ELSE clear down ;

if (

( (swdata & DOWN_L) && !(swdata & GROUND) )

|| // logical OR

( (swdata & DOWN_H) && !(swdata & GROUND) )

|| // logical OR

( (outdata & ALARM) && !(swdata & GROUND) )

)

//then

(outdata = outdata | DOWN); // Turn single bit ON

else (outdata = outdata & ALARMOFF & DOWNOFF);

PTT = outdata; // show LEDs as set.

// if (up_h AND !up_l AND !proximity AND !alarm) OR

// if (down_h AND !down_l AND !proximity AND !alarm) THEN set speed ELSE clear speed ;

if (

( (swdata & UP_H) && !(swdata & UP_L) && !(swdata & PROXIMITY) && !(outdata & ALARM) )

|| // logical OR

( (swdata & DOWN_H) && !(swdata & DOWN_L) && !(swdata & PROXIMITY) && !(outdata & ALARM) )

)

//then

(outdata = outdata | SPEED); // Turn single bit ON

else (outdata = outdata & SPEEDOFF); // Turn single bit OFF

PTT = outdata; // show LEDs as set.

} while ( 1 ); // loop FOREVER - PUT IN A BREAKPOINT!!

}

Summary program works but interrupt doesn't work. Can some have a look at my code and tell me where i am going wrong of fix it for me.

thanks in advance

Re: Program help NEEDED

CrasyCat — Tue, 26 Apr 2011 19:04:26 GMT

Hello

How did you attach the interrupt function to the vector table?

Did you consider creating a project for HCS12E128 with ProcessorExpert enabled and adding a timerInt bean generating an interrupt every 0.5 seconds?

This might provide you with a sample working project. Then you can see what you are missing in your own application.

CrasyCat

Re: Program help NEEDED

colingribben — Tue, 26 Apr 2011 19:40:52 GMT

I edited one of the files already in the program set up for the project wizard function with: Vector RTIHan

I have only used code warrior a couple of times so not sure how to work it. I think my code is nearly there just missing a couple of lines.

Classic/Legacy CodeWarriorのトピックRe: Program help NEEDED

Program help NEEDED

Re: Program help NEEDED

Re: Program help NEEDED