mspdebug/drivers/device.c

147 lines
3.4 KiB
C
Raw Normal View History

/* MSPDebug - debugging tool for MSP430 MCUs
* Copyright (C) 2009, 2010 Daniel Beer
*
* 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
2012-08-09 03:33:56 +00:00
#include "output.h"
#include "device.h"
device_t device_default;
static int addbrk(device_t dev, address_t addr, device_bptype_t type)
{
int i;
int which = -1;
struct device_breakpoint *bp;
for (i = 0; i < dev->max_breakpoints; i++) {
bp = &dev->breakpoints[i];
if (bp->flags & DEVICE_BP_ENABLED) {
if (bp->addr == addr && bp->type == type)
return i;
} else if (which < 0) {
which = i;
}
}
if (which < 0)
return -1;
bp = &dev->breakpoints[which];
bp->flags = DEVICE_BP_ENABLED | DEVICE_BP_DIRTY;
bp->addr = addr;
bp->type = type;
return which;
}
static void delbrk(device_t dev, address_t addr, device_bptype_t type)
{
int i;
for (i = 0; i < dev->max_breakpoints; i++) {
struct device_breakpoint *bp = &dev->breakpoints[i];
if ((bp->flags & DEVICE_BP_ENABLED) &&
bp->addr == addr && bp->type == type) {
bp->flags = DEVICE_BP_DIRTY;
bp->addr = 0;
}
}
}
int device_setbrk(device_t dev, int which, int enabled, address_t addr,
device_bptype_t type)
{
if (which < 0) {
if (enabled)
return addbrk(dev, addr, type);
delbrk(dev, addr, type);
} else {
struct device_breakpoint *bp = &dev->breakpoints[which];
int new_flags = enabled ? DEVICE_BP_ENABLED : 0;
if (!enabled)
addr = 0;
if (bp->addr != addr ||
(bp->flags & DEVICE_BP_ENABLED) != new_flags) {
bp->flags = new_flags | DEVICE_BP_DIRTY;
bp->addr = addr;
bp->type = type;
}
}
return 0;
}
2012-08-09 03:33:56 +00:00
int device_probe_id(device_t dev)
{
uint8_t data[16];
if (dev->type->readmem(dev, 0xff0, data, sizeof(data)) < 0) {
printc_err("device_probe_id: read failed\n");
return -1;
}
if (data[0] == 0x80) {
if (dev->type->readmem(dev, 0x1a00, data, sizeof(data)) < 0) {
printc_err("device_probe_id: read failed\n");
return -1;
}
dev->dev_id[0] = data[4];
dev->dev_id[1] = data[5];
dev->dev_id[2] = data[6];
} else {
dev->dev_id[0] = data[0];
dev->dev_id[1] = data[1];
dev->dev_id[2] = data[13];
}
printc_dbg("Chip ID data: %02x %02x", dev->dev_id[0], dev->dev_id[1]);
if (dev->dev_id[2])
printc_dbg(" %02x", dev->dev_id[2]);
2012-08-09 03:33:56 +00:00
if (device_is_fram(dev))
printc_dbg(" [FRAM]");
2012-08-09 03:33:56 +00:00
printc_dbg("\n");
2012-08-09 03:33:56 +00:00
return 0;
}
/* Is there a more reliable way of doing this? */
int device_is_fram(device_t dev)
{
const uint8_t a = dev->dev_id[0];
const uint8_t b = dev->dev_id[1];
return ((a < 0x04) && (b == 0x81)) ||
(((a & 0xf0) == 0x70) && ((b & 0x8e) == 0x80));
}
int device_erase(device_erase_type_t et, address_t addr)
{
if (device_is_fram(device_default)) {
printc_err("warning: not attempting erase of FRAM device\n");
return 0;
}
return device_default->type->erase(device_default, et, addr);
}