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/*
*
* mur.sat
*
* Somewhen in the year 2012, mur.at will have a nano satellite launched
* into a low earth orbit (310 km above the surface of our planet). The
* satellite itself is a TubeSat personal satellite kit, developed and
* launched by interorbital systems. mur.sat is a joint venture of mur.at,
* ESC im Labor and realraum.
*
* Please visit the project hompage at sat.mur.at for further information.
*
*
* Copyright (C) 2011 Christian Pointner <equinox@mur.at>
*
* This file is part of mur.sat.
*
* mur.sat 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 3 of the License, or
* any later version.
*
* mur.sat is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with mur.sat. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "avr/io.h"
#include "spi.h"
#define SPI_DDR DDRB
#define SPI_PORT PORTB
#define SPI_PIN PINB
#define CS 0
#define SCK 1
#define MOSI 2
#define MISO 3
#define GDO2 4
#define GDO0 5
#define RE 6
#define TE 7
void spi_init(void)
{
SPI_PORT = 0;
SPI_DDR = (1<<MOSI)|(1<<SCK)|(1<<CS);
SPCR = (1<<SPE)|(1<<MSTR);
// SPSR = (1<<SPI2X); (4MHz vs. 8MHz)
}
void spi_write(char address, char* data, int len)
{
}
void spi_read(char address, char* data, int* len)
{
PORTB |= (1<<CS);
while(SPI_PIN & (1<<MISO)); /* wait for CC1101 to get ready... */
SPDR = 0x80;
while(!(SPSR & (1<<SPIF)));
PORTB &= ~(1<<CS);
}
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