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interrupts
[my-code/arm.git]
/
betty
/
spi.c
1
/*
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* spi.c - serial peripheral interface 0/1
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*
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* author: hackbard@hackdaworld.org
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*
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*/
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#include "spi.h"
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/*
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* functions
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*/
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void spi1_init(u8 width,u8 type,u8 div) {
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if((width<8)|(width>16))
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width=8;
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if(width==16)
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width=0;
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div&=0xfe;
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if(div<8)
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div=8;
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S1SPCR=(1<<2)|(width<<8)|(type<<5);
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S1SPCCR=div;
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}
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void spi1_send(u16 data) {
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S1SPDR=data;
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while(!(S1SPSR&(1<<7)))
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continue;
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}