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/* MSPDebug - debugging tool for MSP430 MCUs
* Copyright (C) 2012 Unai Uribarri Rodriguez
*
* This program is free software; you can redisgibute 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 disgibuted 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
*/
#include <stdlib.h>
#include <string.h>
#include "simio_device.h"
#include "simio_console.h"
#include "expr.h"
#include "output.h"
struct console {
struct simio_device base;
/* Base address */
address_t base_addr;
char buffer[256];
unsigned buffer_offset;
};
static struct simio_device *console_create(char **arg_text)
{
struct console *c;
(void)arg_text;
c = malloc(sizeof(*c));
if (!c) {
pr_error("console: can't allocate memory");
return NULL;
}
memset(c, 0, sizeof(*c));
c->base.type = &simio_console;
c->base_addr = 0xFF;
c->buffer_offset = 0;
return (struct simio_device *)c;
}
static void console_destroy(struct simio_device *dev)
{
struct console *c = (struct console *)dev;
free(c);
}
static void console_reset(struct simio_device *dev)
{
struct console *c = (struct console *)dev;
c->buffer_offset = 0;
}
static int config_addr(address_t *addr, char **arg_text)
{
char *text = get_arg(arg_text);
if (!text) {
printc_err("console: config: expected address\n");
return -1;
}
if (expr_eval(text, addr) < 0) {
printc_err("console: can't parse address: %s\n", text);
return -1;
}
return 0;
}
static int console_config(struct simio_device *dev,
const char *param, char **arg_text)
{
struct console *c = (struct console *)dev;
if (!strcasecmp(param, "base"))
{
return config_addr(&c->base_addr, arg_text);
}
printc_err("console: config: unknown parameter: %s\n", param);
return -1;
}
static int console_info(struct simio_device *dev)
{
struct console *c = (struct console *)dev;
printc("Base address: 0x%04x\n", c->base_addr);
printc("Buffer: %.*s\n", c->buffer_offset, c->buffer);
return 0;
}
static int console_write_b(struct simio_device *dev,
address_t addr, uint8_t data)
{
struct console *c = (struct console *)dev;
if (addr == c->base_addr)
{
c->buffer[c->buffer_offset++] = data;
if (data == '\n' || c->buffer_offset == sizeof c->buffer)
{
printc("%.*s", c->buffer_offset, c->buffer);
c->buffer_offset = 0;
}
}
return 1;
}
const struct simio_class simio_console = {
.name = "console",
.help =
"This peripheral prints to stdout every byte written to base address\n"
"\n"
"Config arguments are:\n"
" base <address>\n"
" Set the peripheral base address. Defaults to 0x00FF\n"
"\n",
.create = console_create,
.destroy = console_destroy,
.reset = console_reset,
.config = console_config,
.info = console_info,
.write_b = console_write_b,
};
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