--- /dev/null
+/*
+ * 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");
+}