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/*! \page License
* Copyright (C) 2009, H&D Wireless AB 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. The name of H&D Wireless AB may not be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY H&D WIRELESS AB ``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 EXPRESSLY AND
* SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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 <top_defs.h>
#include <string.h>
#include <stdint.h>
#include <stdlib.h>
#include <printf-stdarg.h>
#include <console.h>
#include <board_init.h>
#include <usart.h>
#define MAX_CMD_CONSOLE_NUM 12
struct {
cmd_cb_t cb;
const char* str;
void* ctx;
} cmd_list[MAX_CMD_CONSOLE_NUM] = { { 0 } };
#ifndef CMD_MAX_LEN
#define CMD_MAX_LEN 80
#endif
extern int board_putchar(char c);
int io_getc(char *c)
{
int ci;
int status;
status = usart_read_char(&CONFIG_CONSOLE_PORT, &ci);
if (status == USART_RX_EMPTY)
return 1;
if (status == USART_RX_ERROR) {
CONFIG_CONSOLE_PORT.cr = AVR32_USART_CR_RSTSTA_MASK;
return 1;
}
if (ci == '\r') {
board_putchar('\n');
/* Echo char. */
} else if (ci == '\b') {
board_putchar(ci);
board_putchar(' ');
board_putchar(ci);
} else
board_putchar(ci);
*c = ci;
return 0;
}
static uint8_t is_initialized = 0;
char* console_gets()
{
static char buf[CMD_MAX_LEN];
static int pos = 0;
char c;
for (;;) {
if (io_getc(&c))
return NULL;
if (c == '\r' || c == '\n') {
buf[pos] = 0;
pos = 0;
return buf;
}
if (c == '\b') {
pos -= 1;
if (pos < 0) pos = 0;
buf[pos] = 0;
}
else
buf[pos++] = c;
if (pos == sizeof(buf))
pos = 0;
}
return NULL;
}
int console_add_cmd(const char* str, cmd_cb_t cb, void* ctx)
{
uint32_t i;
for (i = 0; i < ARRAY_SIZE(cmd_list); i++)
if (!cmd_list[i].cb)
break;
if (i == ARRAY_SIZE(cmd_list))
return -1;
cmd_list[i].str = str;
cmd_list[i].cb = cb;
cmd_list[i].ctx = ctx;
return 0;
}
void console_init(void)
{
printk("\n$ ");
is_initialized = 1;
}
void console_init_silent(void) {
is_initialized = 1;
}
int console_schedule_cmd(char *cmd, int interactive) {
#define MAX_ARGS 16
static int argc, i;
static char* argv[MAX_ARGS];
static char *buf;
static enum { INPUT, RUN } state = INPUT;
switch (state) {
case INPUT: {
char* token;
if (NULL == cmd) {
return 0;
}
buf = strdup(cmd);
if (!buf)
return 0;
if (!strlen(buf)) {
interactive ? printk("$ ") : 0;
free(buf);
return 0;
}
#ifdef WIFI_DEBUG_ON
printk("%s : Scheduling command \"%s\"\n",
__func__,
buf);
#endif
for (i = 0; i < ARRAY_SIZE(cmd_list); i++)
if(cmd_list[i].str && !strncmp(cmd_list[i].str, buf, min(strlen(cmd_list[i].str), strlen(buf))))
break;
if (ARRAY_SIZE(cmd_list) == 0) {
printk("No commands available. Is the WiFi card responding?\n");
}
if (i == ARRAY_SIZE(cmd_list)) {
if (interactive) {
printk("available commands:\n");
for (i = 0; i < ARRAY_SIZE(cmd_list); i++)
if (cmd_list[i].cb)
printk(" %s\n", cmd_list[i].str);
printk("$ ");
}
free(buf);
return 0;
}
for (token = strtok(buf, " "); token != NULL;
token = strtok(NULL, " ")) {
argv[argc] = token;
argc++;
if (argc == MAX_ARGS)
break;
}
state = RUN;
} /* fall through */
case RUN: {
cmd_state_t s = cmd_list[i].cb(argc, argv, cmd_list[i].ctx);
if (s == CMD_INPROGRESS)
return 1;
interactive ? printk("$ ") : 0;
argc = 0;
memset(argv, 0, sizeof argv);
free(buf);
state = INPUT;
}
}
return 1;
}
void console_poll(void)
{
char *buf;
buf = console_gets();
console_schedule_cmd(buf, 1);
}
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