altos: missing ao_log_single.c

Neglected to add this file.

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 198 insertions, 0 deletions

diff --git a/src/core/ao_log_single.c b/src/core/ao_log_single.c
new file mode 100644
index 00000000..9e90bd82
--- /dev/null
+++ b/src/core/ao_log_single.c
@@ -0,0 +1,198 @@
+/*
+ * 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 mode" },
+	{ ao_log_single_list,	"l\0List stored flight logs" },
+	{ ao_log_single_delete, "d 1\0Delete all stored flights" },
+	{ 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");
+}