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