Lpc2000

You must pull up the SSEL of the SCI that you are using. Seem be that 
the SCI in master mode need that the SSELx must be connected and 
pulled up externally for correct work.


--- In lpc2000@yahoogroups.com, "Mark Crow" <mcrow@p...> wrote:
> Is SSEL1 pulled up?
>   -----Original Message-----
>   From: Jeetendra Singh [mailto:jeet77_7@y...]
>   Sent: Friday, April 08, 2005 9:44 AM
>   To: lpc2000@yahoogroups.com
>   Subject: [lpc2000] spi in lpc2106
> 
> 
> 
>   Hi friends
> 
>   i am working in Lpc2106 and facing problem in spi mdule.
>   Actualy  i am using spi module in master mode. i checked my code 
in
>   jtag debugger(wiggler in CrossStudio)and found that when writing 
data
>   to the SPDR register then SPif bit in SPSR also sets showing that
>   data is transmitted.
> 
>   But the problem is that nither data nor clocks in the MOSI & SCK 
pins.
> 
> 
>   If some body can help me i will be very thank ful to him.
> 
>   jeetendra
> 
>   My source code attached
>   int main (void){
> 
> 
>         IOSET=0x80;
>         IODIR=0x00;
> 
>         PINSEL0 = 0x00005500;
> 
>   //Config over
>           init_spi();
> 
>           IOSET = MMC_CS; // Chip select High
>           MmCardSendByte(0xAA);
>           IOCLR = MMC_CS; // Chip select Low
> 
>           while (1);
>   }
> 
>   void init_spi(){
>       unsigned char ch;
> 
> 
>       IODIR |= MMC_CS; // io direction of mc chip select
>       IOSET = MMC_CS; // Chip select High
> 
>       SPCCR = 0xfe; // clock counter
>       SPCR =  0x20; // spi master mode,
> 
>   //   ch = SPDR;// data read
> 
>   }
> 
>   BYTE MmCardSendByte(BYTE bt)
>   {
>     BYTE input;
>     SPDR =  bt;
>     while (!(SPSR & 0x80));
>     input = SPDR;
> 
>     return input;
>   }
> 
> 
> 
> 
> 
> 
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