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/*
* Copyright © 2011 Keith Packard <keithp@keithp.com>
*
* 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; version 2 of the License.
*
* 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.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
/*
* ao_log_single.c
*
* Stores a sequence of fixed-size (32 byte) chunks
* without splitting memory up into separate flights
*/
#include "ao.h"
#include "ao_product.h"
static __xdata struct ao_task ao_log_single_task;
__xdata uint8_t ao_log_running;
__xdata uint8_t ao_log_mutex;
__pdata uint32_t ao_log_start_pos;
__pdata uint32_t ao_log_end_pos;
__pdata uint32_t ao_log_current_pos;
__xdata union ao_log_single ao_log_single_write_data;
__xdata union ao_log_single ao_log_single_read_data;
uint8_t
ao_log_single_write(void)
{
uint8_t wrote = 0;
ao_mutex_get(&ao_log_mutex); {
if (ao_log_current_pos >= ao_log_end_pos && ao_log_running)
ao_log_single_stop();
if (ao_log_running) {
wrote = 1;
ao_storage_write(ao_log_current_pos,
&ao_log_single_write_data,
AO_LOG_SINGLE_SIZE);
ao_log_current_pos += AO_LOG_SINGLE_SIZE;
}
} ao_mutex_put(&ao_log_mutex);
return wrote;
}
static uint8_t
ao_log_single_valid(void)
{
__xdata uint8_t *d = ao_log_single_read_data.bytes;
uint8_t i;
for (i = 0; i < AO_LOG_SINGLE_SIZE; i++)
if (*d++ != 0xff)
return 1;
return 0;
}
uint8_t
ao_log_single_read(uint32_t pos)
{
if (!ao_storage_read(pos, &ao_log_single_read_data, AO_LOG_SINGLE_SIZE))
return 0;
return ao_log_single_valid();
}
void
ao_log_single_start(void)
{
if (!ao_log_running) {
ao_log_running = 1;
ao_wakeup(&ao_log_running);
}
}
void
ao_log_single_stop(void)
{
if (ao_log_running) {
ao_log_running = 0;
}
}
void
ao_log_single_restart(void)
{
/* Find end of data */
ao_log_end_pos = ao_storage_config;
for (ao_log_current_pos = 0;
ao_log_current_pos < ao_storage_config;
ao_log_current_pos += ao_storage_block)
{
if (!ao_log_single_read(ao_log_current_pos))
break;
}
if (ao_log_current_pos > 0) {
ao_log_current_pos -= ao_storage_block;
for (; ao_log_current_pos < ao_storage_config;
ao_log_current_pos += sizeof (struct ao_log_telescience))
{
if (!ao_log_single_read(ao_log_current_pos))
break;
}
}
}
void
ao_log_single_set(void)
{
printf("Logging currently %s\n", ao_log_running ? "on" : "off");
ao_cmd_hex();
if (ao_cmd_status == ao_cmd_success) {
if (ao_cmd_lex_i) {
printf("Logging from %ld to %ld\n", ao_log_current_pos, ao_log_end_pos);
ao_log_single_start();
} else {
printf ("Log stopped at %ld\n", ao_log_current_pos);
ao_log_single_stop();
}
}
ao_cmd_status = ao_cmd_success;
}
void
ao_log_single_delete(void)
{
uint32_t pos;
ao_cmd_hex();
if (ao_cmd_status != ao_cmd_success)
return;
if (ao_cmd_lex_i != 1) {
ao_cmd_status = ao_cmd_syntax_error;
printf("No such flight: %d\n", ao_cmd_lex_i);
return;
}
ao_log_single_stop();
for (pos = 0; pos < ao_storage_config; pos += ao_storage_block) {
if (!ao_log_single_read(pos))
break;
ao_storage_erase(pos);
}
ao_log_current_pos = ao_log_start_pos = 0;
if (pos == 0)
printf("No such flight: %d\n", ao_cmd_lex_i);
else
printf ("Erased\n");
}
uint8_t
ao_log_full(void)
{
return ao_log_current_pos >= ao_log_end_pos;
}
uint8_t
ao_log_present(void)
{
return ao_log_single_read(0);
}
static void
ao_log_single_query(void)
{
printf("Logging enabled: %d\n", ao_log_running);
printf("Log start: %ld\n", ao_log_start_pos);
printf("Log cur: %ld\n", ao_log_current_pos);
printf("Log end: %ld\n", ao_log_end_pos);
ao_log_single_extra_query();
}
const struct ao_cmds ao_log_single_cmds[] = {
{ ao_log_single_set, "L <0 off, 1 on>\0Set logging" },
{ ao_log_single_list, "l\0List stored logs" },
{ ao_log_single_delete, "d 1\0Delete all stored logs" },
{ ao_log_single_query, "q\0Query log status" },
{ 0, NULL },
};
void
ao_log_single_init(void)
{
ao_log_running = 0;
ao_cmd_register(&ao_log_single_cmds[0]);
ao_add_task(&ao_log_single_task, ao_log_single, "log");
}
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