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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.
*/
#include "ao.h"
static struct ao_task ao_log_task;
uint8_t ao_log_running;
uint8_t ao_log_mutex;
uint32_t ao_log_begin_pos, ao_log_end_pos;
uint32_t ao_log_current_pos;
#define AO_LOG_TELESCIENCE_START 'b'
#define AO_LOG_TELESCIENCE_STOP 'e'
#define AO_LOG_TELESCIENCE_DATA 'd'
struct ao_log_telescience {
uint8_t type;
uint8_t csum;
uint16_t tick;
union {
uint8_t bytes[28];
uint16_t adc[NUM_ADC];
} u;
};
static struct ao_log_telescience log;
static uint8_t ao_log_adc_pos;
static uint8_t
ao_log_csum(__xdata uint8_t *b) __reentrant
{
uint8_t sum = 0x5a;
uint8_t i;
for (i = 0; i < sizeof (struct ao_log_telescience); i++)
sum += *b++;
return -sum;
}
uint8_t
ao_log_telescience_data(struct ao_log_telescience *log)
{
uint8_t wrote = 0;
log->csum = 0;
log->csum = ao_log_csum((__xdata uint8_t *) log);
ao_mutex_get(&ao_log_mutex); {
if (ao_log_current_pos >= ao_log_end_pos && ao_log_running)
ao_log_stop();
if (ao_log_running) {
wrote = 1;
ao_storage_write(ao_log_current_pos,
log,
sizeof (struct ao_log_telescience));
ao_log_current_pos += sizeof (struct ao_log_telescience);
}
} ao_mutex_put(&ao_log_mutex);
return wrote;
}
void
ao_log_telescience(void)
{
ao_storage_setup();
ao_log_current_pos = 0;
ao_log_end_pos = ao_storage_config;
for (;;) {
while (!ao_log_running)
ao_sleep(&ao_log_running);
memset(&log, '\0', sizeof (struct ao_log_telescience));
log.type = AO_LOG_TELESCIENCE_START;
log.tick = ao_time();
ao_log_telescience_data(&log);
/* Write the whole contents of the ring to the log
* when starting up.
*/
ao_log_adc_pos = ao_adc_ring_next(ao_adc_head);
log.type = AO_LOG_TELESCIENCE_DATA;
while (ao_log_running) {
/* Write samples to EEPROM */
while (ao_log_adc_pos != ao_adc_head) {
log.tick = ao_adc_ring[ao_log_adc_pos].tick;
memcpy(&log.u.adc, (void *) ao_adc_ring[ao_log_adc_pos].adc,
NUM_ADC * sizeof (uint16_t));
ao_log_telescience_data(&log);
ao_log_adc_pos = ao_adc_ring_next(ao_log_adc_pos);
}
/* Wait for more ADC data to arrive */
ao_sleep((void *) &ao_adc_head);
}
memset(&log, '\0', sizeof (struct ao_log_telescience));
log.type = AO_LOG_TELESCIENCE_STOP;
log.tick = ao_time();
ao_log_telescience_data(&log);
ao_storage_flush();
}
}
void
ao_log_start(void)
{
ao_log_running = 1;
ao_wakeup(&ao_log_running);
}
void
ao_log_stop(void)
{
ao_log_running = 0;
ao_wakeup((void *) &ao_adc_head);
}
void
ao_log_set(void)
{
ao_cmd_hex();
if (ao_cmd_status == ao_cmd_success) {
if (ao_cmd_lex_i)
ao_log_start();
else
ao_log_stop();
}
}
const struct ao_cmds ao_log_cmds[] = {
{ ao_log_set, "L <0 off, 1 on>\0Set logging mode" },
{ 0, NULL },
};
void
ao_log_init(void)
{
ao_log_running = 0;
ao_cmd_register(&ao_log_cmds[0]);
ao_add_task(&ao_log_task, ao_log_telescience, "log");
}
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