topic Re: Init ports 5282 in ColdFire/68K Microcontrollers and Processors

Init ports 5282

Lucho — Tue, 24 Apr 2007 10:58:09 GMT

I need some help to init the ports in the coldfire 5282. I have the next simple program but the problem is that I can not do the PORTE an IN PUT port.

int main()
{
MCF5282_GPIO_PEPAR = 0x00;
MCF5282_GPIO_DDRE = 0X00;      //For In put
MCF5282_GPIO_PFPAR = 0x00;
MCF5282_GPIO_DDRF = 0XFF;      //For Out put
    while(1)
   {
       MCF5282_GPIO_PORTE = MCF5282_GPIO_PORTF;
   }
   return 0;
}

I do not know if i miss something for complete the declaration IN PUT port so if some body can send me a exemple of program that recive something I will be thankful .

Re: Init ports 5282

Tang — Tue, 24 Apr 2007 17:57:27 GMT

Pay attemtion to the MCF5282_GPIO_PEPAR is 16bit width,see below:

#define MCF5282_GPIO_PEPAR (*(vuint16 *)(void *)(&__IPSBAR[0x100052]))

Re: Init ports 5282

Lucho — Tue, 24 Apr 2007 20:22:13 GMT

Thank I didn't see that but not only this port is my problem else all of the ports that I like to used like IN PUT port I can't use them like IN PUT as PORTB, PORTC, PORTD and this registers are of 8 bits

#define MCF5282_GPIO_PBCDPAR (*(vuint8 *)(void *)(&__IPSBAR[0x100050]))

and using the similar instrution of program:

int main()
{
MCF5282_GPIO_PBCDPAR = 0x00

MCF5282_GPIO_DDRB = 0xFF; //OUT PUT PORT

MCF5282_GPIO_DDRC = 0X00; //IN PUT PORT

   while(1)
    {
        MCF5282_GPIO_PORTC =    MCF5282_GPIO_PORTC           ;

}

return 0;
}

I did the same structure program with other ports but I have nothing when I send information to the PORTC.