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added Z1 xmem + coffee driver

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This commit is contained in:
joxe 2010-08-25 17:28:15 +00:00
parent a72252cbd8
commit d946fdd574
3 changed files with 288 additions and 5 deletions
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4
platform/z1/Makefile.z1
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@ -1,8 +1,8 @@
# $Id: Makefile.z1,v 1.1 2010/08/24 16:26:38 joxe Exp $
# $Id: Makefile.z1,v 1.2 2010/08/25 17:28:15 joxe Exp $
CFLAGS+=-Os -g
ARCH=msp430.c leds.c watchdog.c \
ARCH=msp430.c leds.c watchdog.c xmem.c \
spix.c cc2420.c cc2420-aes.c cc2420-arch.c cc2420-arch-sfd.c\
node-id.c sensors.c button-sensor.c cfs-coffee.c \
radio-sensor.c uart0x.c uart0-putchar.c uip-ipchksum.c \

17
platform/z1/cfs-coffee-arch.h
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@ -32,9 +32,10 @@
/**
* \file
* Coffee architecture-dependent header for the Tmote Sky platform.
* Coffee architecture-dependent header for the Zolertia Z1 platform.
* \author
* Nicolas Tsiftes <nvt@sics.se>
* Enric M. Calvo <ecalvo@zolertia.com>
*/
#ifndef CFS_COFFEE_ARCH_H
@ -44,11 +45,21 @@
#include "dev/xmem.h"
#include "dev/watchdog.h"
/*** M25P16 Memory Organization
The memory is organized as:
16Mbit = 2 097 152 bytes (8 bits each)
32 sectors (512 Kbits, 65536 bytes each)
8192 pages (256 bytes each).
Each page can be individually programmed (bits are programmed from 1 to 0). The device is
sector or bulk erasable (bits are erased from 0 to 1) but not page erasable
*/
#define COFFEE_XMEM_TOTAL_SIZE_KB 2048UL //Total size of the External Flash Memory in the Z1
/* Coffee configuration parameters. */
#define COFFEE_SECTOR_SIZE 65536UL
#define COFFEE_SECTOR_SIZE 65536UL
#define COFFEE_PAGE_SIZE 256UL
#define COFFEE_START COFFEE_SECTOR_SIZE
#define COFFEE_SIZE (1024UL * 1024UL - COFFEE_START)
#define COFFEE_SIZE (COFFEE_XMEM_TOTAL_SIZE_KB * 1024UL - COFFEE_START)
#define COFFEE_NAME_LENGTH 16
#define COFFEE_MAX_OPEN_FILES 6
#define COFFEE_FD_SET_SIZE 8

272
platform/z1/dev/xmem.c Normal file
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@ -0,0 +1,272 @@
/*
* Copyright (c) 2006, Swedish Institute of Computer Science
* 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 Institute 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 INSTITUTE 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 INSTITUTE 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.
*
* @(#)$Id: xmem.c,v 1.1 2010/08/25 17:28:16 joxe Exp $
*/
/**
* \file
* Device driver for the ST M25P16 40MHz 1Mbyte external memory.
* \author
* Björn Grönvall <bg@sics.se>
* Enric M. Calvo <ecalvo@zolertia.com>
*
* Data is written bit inverted (~-operator) to flash so that
* unwritten data will read as zeros (UNIX style).
*/
#include <stdio.h>
#include <string.h>
#include <io.h>
#include <signal.h>
#include "contiki.h"
#include "dev/spi.h"
#include "dev/xmem.h"
#include "dev/watchdog.h"
#if 1
#define PRINTF(...) printf(__VA_ARGS__)
#else
#define PRINTF(...) do {} while (0)
#endif
#define SPI_FLASH_INS_WREN 0x06
#define SPI_FLASH_INS_WRDI 0x04
#define SPI_FLASH_INS_RDSR 0x05
#define SPI_FLASH_INS_WRSR 0x01
#define SPI_FLASH_INS_READ 0x03
#define SPI_FLASH_INS_FAST_READ 0x0b
#define SPI_FLASH_INS_PP 0x02
#define SPI_FLASH_INS_SE 0xd8
#define SPI_FLASH_INS_BE 0xc7
#define SPI_FLASH_INS_DP 0xb9
#define SPI_FLASH_INS_RES 0xab
/*---------------------------------------------------------------------------*/
static void
write_enable(void)
{
int s;
s = splhigh();
SPI_FLASH_ENABLE();
SPI_WRITE(SPI_FLASH_INS_WREN);
SPI_FLASH_DISABLE();
splx(s);
}
/*---------------------------------------------------------------------------*/
static unsigned
read_status_register(void)
{
unsigned char u;
int s;
s = splhigh();
SPI_FLASH_ENABLE();
SPI_WRITE(SPI_FLASH_INS_RDSR);
SPI_FLUSH();
SPI_READ(u);
SPI_FLASH_DISABLE();
splx(s);
return u;
}
/*---------------------------------------------------------------------------*/
/*
* Wait for a write/erase operation to finish.
*/
static unsigned
wait_ready(void)
{
unsigned u;
do {
u = read_status_register();
} while(u & 0x01); /* WIP=1, write in progress */
return u;
}
/*---------------------------------------------------------------------------*/
/*
* Erase 64k bytes of data. It takes about 1s before WIP goes low!
*/
static void
erase_sector(unsigned long offset)
{
int s;
wait_ready();
write_enable();
s = splhigh();
SPI_FLASH_ENABLE();
SPI_WRITE_FAST(SPI_FLASH_INS_SE);
SPI_WRITE_FAST(offset >> 16); /* MSB */
SPI_WRITE_FAST(offset >> 8);
SPI_WRITE_FAST(offset >> 0); /* LSB */
SPI_WAITFORTx_ENDED();
SPI_FLASH_DISABLE();
splx(s);
}
/*---------------------------------------------------------------------------*/
/*
* Initialize external flash *and* SPI bus!
*/
void
xmem_init(void)
{
spi_init();
P4DIR |= BV(FLASH_CS); // Unnecessary for Zolertia Z1 | BV(FLASH_PWR);
P5DIR |= BV(FLASH_HOLD); // In P5 for Z1
SPI_FLASH_DISABLE(); /* Unselect flash. */
SPI_FLASH_UNHOLD();
}
/*---------------------------------------------------------------------------*/
int
xmem_pread(void *_p, int size, unsigned long offset)
{
unsigned char *p = _p;
const unsigned char *end = p + size;
int s;
wait_ready();
ENERGEST_ON(ENERGEST_TYPE_FLASH_READ);
s = splhigh();
SPI_FLASH_ENABLE();
SPI_WRITE_FAST(SPI_FLASH_INS_READ);
SPI_WRITE_FAST(offset >> 16); /* MSB */
SPI_WRITE_FAST(offset >> 8);
SPI_WRITE_FAST(offset >> 0); /* LSB */
SPI_WAITFORTx_ENDED();
SPI_FLUSH();
for(; p < end; p++) {
unsigned char u;
SPI_READ(u);
*p = ~u;
}
SPI_FLASH_DISABLE();
splx(s);
ENERGEST_OFF(ENERGEST_TYPE_FLASH_READ);
return size;
}
/*---------------------------------------------------------------------------*/
static const char *
program_page(unsigned long offset, const unsigned char *p, int nbytes)
{
const unsigned char *end = p + nbytes;
int s;
wait_ready();
write_enable();
s = splhigh();
SPI_FLASH_ENABLE();
SPI_WRITE_FAST(SPI_FLASH_INS_PP);
SPI_WRITE_FAST(offset >> 16); /* MSB */
SPI_WRITE_FAST(offset >> 8);
SPI_WRITE_FAST(offset >> 0); /* LSB */
for(; p < end; p++) {
SPI_WRITE_FAST(~*p);
}
SPI_WAITFORTx_ENDED();
SPI_FLASH_DISABLE();
splx(s);
return p;
}
/*---------------------------------------------------------------------------*/
int
xmem_pwrite(const void *_buf, int size, unsigned long addr)
{
const unsigned char *p = _buf;
const unsigned long end = addr + size;
unsigned long i, next_page;
ENERGEST_ON(ENERGEST_TYPE_FLASH_WRITE);
for(i = addr; i < end;) {
next_page = (i | 0xff) + 1;
if(next_page > end) {
next_page = end;
}
p = program_page(i, p, next_page - i);
i = next_page;
}
ENERGEST_OFF(ENERGEST_TYPE_FLASH_WRITE);
return size;
}
/*---------------------------------------------------------------------------*/
int
xmem_erase(long size, unsigned long addr)
{
unsigned long end = addr + size;
if(size % XMEM_ERASE_UNIT_SIZE != 0) {
PRINTF("xmem_erase: bad size\n");
return -1;
}
if(addr % XMEM_ERASE_UNIT_SIZE != 0) {
PRINTF("xmem_erase: bad offset\n");
return -1;
}
watchdog_stop();
for (; addr < end; addr += XMEM_ERASE_UNIT_SIZE) {
erase_sector(addr);
}
watchdog_start();
return size;
}
/*---------------------------------------------------------------------------*/