mirror of
git://projects.qi-hardware.com/ben-wpan.git
synced 2024-11-30 01:28:25 +02:00
968721c335
Move board specific code form spi, usb and board_app into the new board specific files to avoid to many ifdefs.
52 lines
885 B
C
52 lines
885 B
C
/*
|
|
* fw/spi.c - ATmega8 family SPI I/O
|
|
*
|
|
* Written 2011, 2013 by Werner Almesberger
|
|
* Copyright 2011, 2013 Werner Almesberger
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
|
|
#include <avr/io.h>
|
|
|
|
#include "board.h"
|
|
#include "spi.h"
|
|
|
|
|
|
uint8_t spi_io(uint8_t v)
|
|
{
|
|
// while (!(UCSR1A & 1 << UDRE1));
|
|
SPI_DATA = v;
|
|
SPI_WAIT_DONE();
|
|
return SPI_DATA;
|
|
}
|
|
|
|
|
|
void spi_end(void)
|
|
{
|
|
// while (!(UCSR1A & 1 << TXC1));
|
|
SET(nSS);
|
|
}
|
|
|
|
|
|
void spi_recv_block(uint8_t *buf, uint8_t n)
|
|
{
|
|
if (!n)
|
|
return;
|
|
SPI_DATA = 0;
|
|
while (--n) {
|
|
SPI_WAIT_DONE();
|
|
*buf++ = SPI_DATA;
|
|
SPI_DATA = 0;
|
|
}
|
|
SPI_WAIT_DONE();
|
|
*buf++ = SPI_DATA;
|
|
}
|