mirror of
git://projects.qi-hardware.com/ben-wpan.git
synced 2024-09-29 12:36:02 +03:00
4f0af39d4d
- io.h: renamed to board.h - Makefile (OBJS): added board.o - atusb.c (reset_rf): moved to board.c - board.h (reset_rf): give reset_rf a proper declaration - atusb.c, ep.c, spi.c: include board.h instead of io.h
45 lines
664 B
C
45 lines
664 B
C
#include <stdint.h>
|
|
|
|
#include <avr/io.h>
|
|
|
|
#include "board.h"
|
|
#include "spi.h"
|
|
|
|
|
|
void spi_begin(void)
|
|
{
|
|
CLR(nSS);
|
|
}
|
|
|
|
|
|
uint8_t spi_io(uint8_t v)
|
|
{
|
|
// while (!(UCSR1A & 1 << UDRE1));
|
|
UDR1 = v;
|
|
while (!(UCSR1A & 1 << RXC1));
|
|
return UDR1;
|
|
}
|
|
|
|
|
|
void spi_end(void)
|
|
{
|
|
// while (!(UCSR1A & 1 << TXC1));
|
|
SET(nSS);
|
|
}
|
|
|
|
|
|
void spi_init(void)
|
|
{
|
|
OUT(SCLK);
|
|
OUT(MOSI);
|
|
OUT(nSS);
|
|
IN(MISO);
|
|
|
|
UBRR1 = 0; /* set bit rate to zero to begin */
|
|
UCSR1C = 1 << UMSEL11 | 1 << UMSEL10;
|
|
/* set MSPI, MSB first, SPI data mode 0 */
|
|
UCSR1B = 1 << RXEN1 | 1 << TXEN1;
|
|
/* enable receiver and transmitter */
|
|
UBRR1 = 0; /* reconfirm the bit rate */
|
|
}
|