Why the same program for a MCF51QE128 run on CW10 eclipse work slower than on CW 6.3 Clasic IDE?

euge — Wed, 29 Oct 2014 22:16:11 GMT

I regularly work with CW6.3 classic IDE and now I'm trying CW10 eclipse and have found that the following code works in CW10 slower than CW6.3.

I could not import the file classic project , so I made a new bareboard project and then copy the files.c on sources and files.h on Project_ Headers.

This way I could compile, install code on microcontroller, debug step by step and run without problem.

the only thing I've found is that when I work on CW10 The program runs slower

Working on CW6.3 function Delay_ms(1) generates a 1ms delay tested with osciloscope.

Working on CW10 function Delay_ms(1) generates a 1,7ms delay tested with osciloscope.

What will be the problem?

Best Regards

Eugenio

void main(void)

{

InitSystems();

Conf_Clock();

ConfTIM1();

ConfPuertosGPF51();

for(;;)

{

oLED_Z=1; //oLED_Z is PTCD_PTCD3 OUT1

Delay_ms(1);

oLED_Z=0;

Delay_ms(1);

oLED_Z=1;

Delay_ms(1);

oLED_Z=0;

Delay_ms(1);

}

void InitSystems()

{

SOPT1 = 0x23; // Disable COP,RSTO, enable STOP,BKGD,RESET

SOPT2 = 0x00; // SPI1 on PTB2/3/4/5, IIC1 on PTA2/3

SPMSC1 = 0x00; // Disable LVD

SPMSC2 = 0x00; // Disable power-down modes

SPMSC3 = 0x00; // Disable LVWIE, low trip points

SCGC1 = 0xFF; // Enable bus clock to peripherals

SCGC2 = 0xFF; // Enable bus clock to peripherals

}

void Conf_Clock(void)

{

//Modo FEE con cristal 32,768 KHz

//sigo la AN99 or AN3499

//ICS Control Register 2 (ICSC2)

// bit7-6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0

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

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

// | 0 0 | 0 | 0 | 0 | 1 | 1 | 0 |

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

/////////////////////////////////////////////////////////////////////////

ICSC2_BDIV=0; //==>dBDIV=1 divisor de bus clock tabla12-4 pag251

ICSC2_RANGE=0; //uso cristal baja frecuencia Low Freq range selected

ICSC2_HGO=0; //Ext Osc configured for low gain, low power

ICSC2_LP=0; //FLL is not disabled in bypass modes

ICSC2_EREFS=1; //External Ref clock selected

ICSC2_ERCLKEN=1; //External Ref clock enable

ICSC2_EREFSTEN=0; //External Ref clock disable en stop

// Loop until OSCINIT = 1 =>crystal selected by EREFS bit has been init

while(ICSSC_OSCINIT!=1);

//ICS Control Register 1 (ICSC1)

// bit 7-6 bit 5-4-3 bit 2 bit 1 bit 0

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

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

// | 0 0 | 0 0 0 | 0 | 0 | 0 |

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

/////////////////////////////////////////////////////////////////////////

ICSC1_CLKS=0; //selecciono fuente del clock via FLL

//00 --> la fuente es la salidad FLL

ICSC1_RDIV=0; //==>dRDIV=1 divisor de la ref del clock

//32.768kHz/1 = 32.768kHz tabla12-3 pag250

//RANGE=0 porque el cristal es de baja frecuencia

ICSC1_IREFS=0; //elijo el clock externo como fuente del FLL

ICSC1_IRCLKEN=0; //internal reference clock inactivo

ICSC1_IREFSTEN=0; //internal reference clock in stop

//loop until IREFST = 0 - indicates ext ref is current source

while(ICSSC_IREFST!=0);

//loop until CLKST = 00 - indiates ext ref clk selected to feed ICSOUT

while(ICSSC_CLKST!=0b00);

ICSSC_DMX32 =1; //1==>Fine Tuned for max frec a 32,768KHz

//de tabla12-7 pag253 ==>FLL factor=1216

ICSSC_DRST_DRS =1; //00==>low Rangue

}

//fbus=(fref/dRDIV) x (FFL factor)/dBDIV)

//fbus= (32,768KHz/2*1) x (1216/1) = 19923000 Hz teorico

//ciclo de maquina 50,193nseg teorico

Original Attachment has been moved to: CW10-vs-Clasic-soft.txt.zip

Re: Why the same program for a MCF51QE128 run on CW10 eclipse work slower than on CW 6.3 Clasic IDE?

Carlos_Mendoza — Fri, 31 Oct 2014 16:15:07 GMT

Hi Eugenio Mendez,

The program might be running slower on CodeWarrior 10.6 because of the Optimization Options in the compiler, you can modify these options by going to Project>>Properties>>C/C++ Build>>Settings>>ColdFire Compiler>>Optimization:

The option "Speed vs Size" allows you to optimize the code for a faster execution speed, you can find more information on the chapter 3.3.2.5 in the CodeWarrior Development Studio for Microcontrollers V10.x ColdFire Build Tools Reference Manual located at C:\Freescale\CW MCU v10.6\MCU\Help\PDF\MCU_ColdFire_Compiler.pdf.

Regards!

Carlos

CodeWarrior Development ToolsのトピックRe: Why the same program for a MCF51QE128 run on CW10 eclipse work slower than on CW 6.3 Clasic IDE?

Why the same program for a MCF51QE128 run on CW10 eclipse work slower than on CW 6.3 Clasic IDE?

Re: Why the same program for a MCF51QE128 run on CW10 eclipse work slower than on CW 6.3 Clasic IDE?