RE: The MCF52235 issue

Dear Marks

 

Thank you for the solution. It is now working properly.

 

Regards,

Sanjay Morab

 

  _____  

From: [email protected] [mailto:[email protected]] On
Behalf Of Mark Butcher
Sent: Thursday, March 13, 2008 3:55 PM
To: Sanjay Morab
Cc: [email protected]
Subject: AW: [ColdFire] The MCF52235 issue

 

Sanjay

 

I think that you are setting the PDDPAR register up incorrectly. If you want
GPIO functionality you need to write ‘0’ to the port bit. Writing a ‘1’ as
you are doing will activate the PST function.

 

See all the following:
http://forums.freescale.com/freescale/board/message?board.id=CFCOMM
<http://forums.freescale.com/freescale/board/message?board.id=CFCOMM&message
.id=3197&query.id=1078333#M3197> &message.id=3197&query.id=1078333#M3197

 

In fact as long as you have no debugger connected it should default to GPIO.

 

Regards

 

Mark

 

 

Mark Butcher Bsc (Hons) MPhil MIEE

 

M.J.Butcher Consulting                

Obere Bahnhofstr. 13,  CH-5507 Mellingen,

Switzerland          <http://www.mjbc.ch/> www.mjbc.ch /
<http://www.utasker.com/> www.uTasker.com

056 491 48 10 / 079 402 26 37 / Skype: M_J_Butcher

 <http://www.uTasker.com>  

 

 

-----Ursprüngliche Nachricht-----
Von: [email protected] [mailto:[email protected]] Im
Auftrag von Sanjay Morab
Gesendet: Donnerstag, 13. März 2008 09:56
An: [email protected]
Cc: [email protected]
Betreff: [ColdFire] The MCF52235 issue

 

Dear MARK

 

I am using The PST0-4 and DDATA0-4 (USED BY BDM) for driving the external
shift register. After downloading the to the flash and disabling the JTAG
connection still it shows some frequency on PST0 and PST1 instead of the
pulses of Shift register. I had checked the shift register working on other
port pin it works fine. Below is the initialization used for shift register
(GPIO).

 

 

void InitReadLedContrl(void)

{

                        MCF_GPIO_PDDPAR = MCF_GPIO_PDDPAR

                                    |  MCF_GPIO_PDDPAR_PDD0_GPIO //Led Data

                                    |  MCF_GPIO_PDDPAR_PDD1_GPIO; // Led
Clock

                                    

                                    

                        MCF_GPIO_DDRDD =   MCF_GPIO_DDRDD

                                | MCF_GPIO_DDRDD_DDRDD0
// LedData PST0

                         | MCF_GPIO_DDRDD_DDRDD1;
// LeaClock PST1

                        

                                    

                                    

                        MCF_GPIO_PTDPAR = MCF_GPIO_PTDPAR

                        | MCF_GPIO_PTDPAR_PWM5_GPIO                 // OE1

                        | MCF_GPIO_PTDPAR_PWM7_GPIO ;   // OE2

    

        

                        MCF_GPIO_DDRTD = MCF_GPIO_DDRTD

                        | MCF_GPIO_DDRTD_DDRTD3                         //
Oe2

                        | MCF_GPIO_DDRTD_DDRTD2;
// Oe1

        

                        

                        MCF_GPIO_PASPAR = MCF_GPIO_PASPAR

                                    | MCF_GPIO_PASPAR_SYNCA_GPIO    //
Strobe 1

                                    | MCF_GPIO_PASPAR_SYNCB_GPIO;   //
Strobe 2

                                    

                        MCF_GPIO_DDRAS = MCF_GPIO_DDRAS

                                    | MCF_GPIO_DDRAS_DDRAS2
// Strobe 2

                                    | MCF_GPIO_DDRAS_DDRAS3;
// Strobe 1

                            

                                    // All Outputs off

                                    

                                    MCF_GPIO_PORTDD |= 0x3;
// Led clk/dta

                                    MCF_GPIO_PORTTD |= 0x0c;
//  OE

                                    MCF_GPIO_PORTAS |= 0x0c;
// Strobe

//                                  ReaderLedStatus = 0;

                        

}

 

Is there any thing else to be done for disabling the PST0

 

Regards

Sanjay Morab

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