mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-08-18 20:28:59 +00:00
84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
|
/*
|
||
|
* Copyright (c) 2012-2013, Robert Olsson <robert@radio-sensors.com>
|
||
|
* All rights reserved.
|
||
|
*
|
||
|
* Redistribution and use in source and binary forms, with or without
|
||
|
* modification, are permitted provided that the following conditions
|
||
|
* are met:
|
||
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
* notice, this list of conditions and the following disclaimer.
|
||
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
* documentation and/or other materials provided with the distribution.
|
||
|
* 3. Neither the name of the copyright holder nor the names of its
|
||
|
* contributors may be used to endorse or promote products derived
|
||
|
* from this software without specific prior written permission.
|
||
|
*
|
||
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||
|
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||
|
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
*
|
||
|
*/
|
||
|
|
||
|
#include <avr/pgmspace.h>
|
||
|
#include <avr/pgmspace.h>
|
||
|
#include <avr/sleep.h>
|
||
|
#include "dev/watchdog.h"
|
||
|
#include "contiki.h"
|
||
|
#include "i2c.h"
|
||
|
#include <compat/twi.h>
|
||
|
#include <stdio.h>
|
||
|
#include <string.h>
|
||
|
#include "enc28j60_avr.h"
|
||
|
|
||
|
#include <util/delay_basic.h>
|
||
|
#define delay_us(us) (_delay_loop_2(1 + (us * F_CPU) / 4000000UL))
|
||
|
|
||
|
void
|
||
|
enc28j60_arch_spi_init(void)
|
||
|
{
|
||
|
CS_SPI_DDR |= (1 << SPI_CS);
|
||
|
CS_SPI_PORT |= (1 << SPI_CS);
|
||
|
|
||
|
SPI_DDR |= (1 << SPI_MOSI) | (1 << SPI_SCK);
|
||
|
SPI_DDR &= ~(1 << SPI_MISO);
|
||
|
SPI_PORT &= ~(1 << SPI_MOSI);
|
||
|
SPI_PORT &= ~(1 << SPI_SCK);
|
||
|
SPCR = (1 << SPE) | (1 << MSTR);
|
||
|
/* SPSR |= (1<<SPI2X); */
|
||
|
}
|
||
|
uint8_t
|
||
|
enc28j60_arch_spi_write(uint8_t data)
|
||
|
{
|
||
|
SPDR = data;
|
||
|
while(!(SPSR & (1 << SPIF))) ;
|
||
|
return SPDR;
|
||
|
}
|
||
|
uint8_t
|
||
|
enc28j60_arch_spi_read(void)
|
||
|
{
|
||
|
SPDR = 0xAA; /* dummy */
|
||
|
while(!(SPSR & (1 << SPIF))) ;
|
||
|
return SPDR;
|
||
|
}
|
||
|
void
|
||
|
enc28j60_arch_spi_select(void)
|
||
|
{
|
||
|
CS_SPI_PORT &= ~(1 << SPI_CS);
|
||
|
delay_us(1000);
|
||
|
}
|
||
|
void
|
||
|
enc28j60_arch_spi_deselect(void)
|
||
|
{
|
||
|
CS_SPI_PORT |= (1 << SPI_CS);
|
||
|
}
|