Lpc2000

first - sorry for english mistake.

i'm try to use SPI in master mode.
i dont see any activity on relative pin.
here my code ( i'm use KEIL uvison3)


have someone some suggestion?

thanks

----------------------------------------------------------
#include <LPC210x.H>                    

unsigned long j,g; 

int main (void)  {

unsigned char pin;
unsigned long i;                         

	PCONP = 0x3FE;		

	IODIR = 0xff;     	// P0.0..7 defined as Outputs 

	SPI_SPCCR = 8; 		// rate spi

	PINSEL0 = 0x5500;	// enable spi i/o 

	SPI_SPCR = 0x20; 	// master mode

  pin  = 0;

  while (1) {                             

	for(i=0;i<8;i++){

		if (pin) IOSET = 0x20; else IOCLR = 0x20; 
		pin ^= 1;


		SPI_SPDR = 0x55;// i'm expect to see some activity 

	}
  }
}

--- In lpc2100@yahoogroups.com, "arturo_tramontini" <a.t@t...> wrote:
> first - sorry for english mistake.
> 
> i'm try to use SPI in master mode.
> i dont see any activity on relative pin.
> here my code ( i'm use KEIL uvison3)
> 
> 
> have someone some suggestion?
> 
> thanks
> 
> ----------------------------------------------------------
> #include <LPC210x.H>                    
> 
> unsigned long j,g; 
> 
> int main (void)  {
> 
> unsigned char pin;
> unsigned long i;                         
> 
> 	PCONP = 0x3FE;		
> 
> 	IODIR = 0xff;     	// P0.0..7 defined as Outputs 
> 
> 	SPI_SPCCR = 8; 		// rate spi
> 
> 	PINSEL0 = 0x5500;	// enable spi i/o 
> 
> 	SPI_SPCR = 0x20; 	// master mode
> 
>   pin  = 0;
> 
>   while (1) {                             
> 
> 	for(i=0;i<8;i++){
> 
> 		if (pin) IOSET = 0x20; else IOCLR = 0x20; 
> 		pin ^= 1;
>    
                // here i have put code for about 1 msec. delay
                // to allow the flow for spi

> 
> 		SPI_SPDR = 0x55;// i'm expect to see some activity 
> 
> 	}
>   }
> }

If you are configuring the LPC to operate as SPI master you MUST 
select SSEL functionality on the apropriate pin and have HIGH level 
on this pin in order to act as a master.

Richard


--- In lpc2100@yahoogroups.com, "arturo_tramontini" <a.t@t...> wrote:

> first - sorry for english mistake.
> 
> i'm try to use SPI in master mode.
> i dont see any activity on relative pin.
> here my code ( i'm use KEIL uvison3)
> 
> 
> have someone some suggestion?
> 
> thanks
> 
> ----------------------------------------------------------
> #include <LPC210x.H>                    
> 
> unsigned long j,g; 
> 
> int main (void)  {
> 
> unsigned char pin;
> unsigned long i;                         
> 
> 	PCONP = 0x3FE;		
> 
> 	IODIR = 0xff;     	// P0.0..7 defined as Outputs 
> 
> 	SPI_SPCCR = 8; 		// rate spi
> 
> 	PINSEL0 = 0x5500;	// enable spi i/o 
> 
> 	SPI_SPCR = 0x20; 	// master mode
> 
>   pin  = 0;
> 
>   while (1) {                             
> 
> 	for(i=0;i<8;i++){
> 
> 		if (pin) IOSET = 0x20; else IOCLR = 0x20; 
> 		pin ^= 1;
> 
> 
> 		SPI_SPDR = 0x55;// i'm expect to see some activity 
> 
> 	}
>   }
> }

If you are configuring the LPC to operate as SPI master you MUST 
select SSEL functionality on the apropriate pin and have HIGH level 
on this pin in order to act as a master.

Richard






--- In lpc2100@yahoogroups.com, "arturo_tramontini" <a.t@t...> wrote:

> first - sorry for english mistake.
> 
> i'm try to use SPI in master mode.
> i dont see any activity on relative pin.
> here my code ( i'm use KEIL uvison3)
> 
> 
> have someone some suggestion?
> 
> thanks
> 
> ----------------------------------------------------------
> #include <LPC210x.H>                    
> 
> unsigned long j,g; 
> 
> int main (void)  {
> 
> unsigned char pin;
> unsigned long i;                         
> 
> 	PCONP = 0x3FE;		
> 
> 	IODIR = 0xff;     	// P0.0..7 defined as Outputs 
> 
> 	SPI_SPCCR = 8; 		// rate spi
> 
> 	PINSEL0 = 0x5500;	// enable spi i/o 
> 
> 	SPI_SPCR = 0x20; 	// master mode
> 
>   pin  = 0;
> 
>   while (1) {                             
> 
> 	for(i=0;i<8;i++){
> 
> 		if (pin) IOSET = 0x20; else IOCLR = 0x20; 
> 		pin ^= 1;
> 
> 
> 		SPI_SPDR = 0x55;// i'm expect to see some activity 
> 
> 	}
>   }
> }