Add configuration support

Current config variables:
Main deploy altitude above launch (in meters)
Acceleration zero g calibration (manual or automatic)
Radio channel (freq = 435.550MHz + channel * 100kHz)
Callsign (max 8 characters)

Supporting this involved shuffling code around so that the
non-telemetrum builds could include only the stuff they needed.

1 files changed, 285 insertions, 0 deletions

diff --git a/ao_config.c b/ao_config.c
new file mode 100644
index 00000000..e32dca45
--- /dev/null
+++ b/ao_config.c
@@ -0,0 +1,285 @@
+/*
+ * Copyright © 2009 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"
+
+__xdata struct ao_config ao_config;
+__xdata uint8_t ao_config_loaded;
+__xdata uint8_t ao_config_dirty;
+__xdata uint8_t ao_config_mutex;
+
+#define AO_CONFIG_DEFAULT_MAIN_DEPLOY	250
+#define AO_CONFIG_DEFAULT_RADIO_CHANNEL	0
+#define AO_CONFIG_DEFAULT_CALLSIGN	"KD7SGQ"
+#define AO_CONFIG_DEFAULT_ACCEL_ZERO_G	16000
+
+static void
+_ao_config_put(void)
+{
+	ao_ee_write_config((uint8_t *) &ao_config, sizeof (ao_config));
+}
+
+static void
+_ao_config_get(void)
+{
+	if (ao_config_loaded)
+		return;
+	ao_ee_read_config((uint8_t *) &ao_config, sizeof (ao_config));
+	if (ao_config.major != AO_CONFIG_MAJOR) {
+		ao_config.major = AO_CONFIG_MAJOR;
+		ao_config.minor = AO_CONFIG_MINOR;
+		ao_config.main_deploy = AO_CONFIG_DEFAULT_MAIN_DEPLOY;
+		ao_config.radio_channel = AO_CONFIG_DEFAULT_RADIO_CHANNEL;
+		ao_config.accel_zero_g = AO_CONFIG_DEFAULT_ACCEL_ZERO_G;
+		memset(&ao_config.callsign, '\0', sizeof (ao_config.callsign));
+		memcpy(&ao_config.callsign, AO_CONFIG_DEFAULT_CALLSIGN,
+		       sizeof(AO_CONFIG_DEFAULT_CALLSIGN) - 1);
+		ao_config_dirty = 1;
+	}
+	/* deal with minor version issues here, at 0 we haven't any */
+	ao_config_loaded = 1;
+}
+
+void
+ao_config_get(void)
+{
+	ao_mutex_get(&ao_config_mutex);
+	_ao_config_get();
+	ao_mutex_put(&ao_config_mutex);
+}
+
+void
+ao_config_callsign_show(void)
+{
+	printf ("Callsign: \"%s\"\n", ao_config.callsign);
+}
+
+void
+ao_config_callsign_set(void) __reentrant
+{
+	uint8_t	c;
+	char callsign[AO_MAX_CALLSIGN + 1];
+
+	ao_cmd_white();
+	c = 0;
+	while (ao_cmd_lex_c != '\n') {
+		if (c < AO_MAX_CALLSIGN)
+			callsign[c++] = ao_cmd_lex_c;
+		else
+			ao_cmd_status = ao_cmd_lex_error;
+		ao_cmd_lex();
+	}
+	if (ao_cmd_status != ao_cmd_success)
+		return;
+	ao_mutex_get(&ao_config_mutex);
+	_ao_config_get();
+	memcpy(&ao_config.callsign, &callsign,
+	       AO_MAX_CALLSIGN + 1);
+	ao_config_dirty = 1;
+	ao_mutex_put(&ao_config_mutex);
+	ao_config_callsign_show();
+}
+
+void
+ao_config_radio_channel_show(void) __reentrant
+{
+	uint32_t	freq = 435550L + ao_config.radio_channel * 100L;
+	uint16_t	mhz = freq / 1000L;
+	uint16_t	khz = freq % 1000L;
+
+	printf("Radio channel: %d (%d.%03dMHz)\n",
+	       ao_config.radio_channel, mhz, khz);
+}
+
+void
+ao_config_radio_channel_set(void) __reentrant
+{
+	ao_cmd_decimal();
+	if (ao_cmd_status != ao_cmd_success)
+		return;
+	ao_mutex_get(&ao_config_mutex);
+	_ao_config_get();
+	ao_config.radio_channel = ao_cmd_lex_i;
+	ao_config_dirty = 1;
+	ao_mutex_put(&ao_config_mutex);
+	ao_config_radio_channel_show();
+}
+
+void
+ao_config_main_deploy_show(void) __reentrant
+{
+	printf("Main deploy set to %d meters (%d feet)\n",
+	       ao_config.main_deploy,
+	       (int16_t) ((int32_t) ao_config.main_deploy * 328 / 100));
+}
+
+void
+ao_config_main_deploy_set(void) __reentrant
+{
+	ao_cmd_decimal();
+	if (ao_cmd_status != ao_cmd_success)
+		return;
+	ao_mutex_get(&ao_config_mutex);
+	_ao_config_get();
+	ao_config.main_deploy = ao_cmd_lex_i;
+	ao_config_dirty = 1;
+	ao_mutex_put(&ao_config_mutex);
+	ao_config_main_deploy_show();
+}
+
+void
+ao_config_accel_zero_g_show(void) __reentrant
+{
+	printf("Accel zero g point set to %d\n",
+	       ao_config.accel_zero_g);
+}
+
+#define ZERO_G_SAMPLES	1000
+
+static int16_t
+ao_config_accel_zero_g_auto(void) __reentrant
+{
+	uint16_t	i;
+	int32_t		accel_total;
+	uint8_t		cal_adc_ring;
+
+	puts("Calibrating accelerometer..."); flush();
+	i = ZERO_G_SAMPLES;
+	accel_total = 0;
+	cal_adc_ring = ao_adc_head;
+	while (i) {
+		ao_sleep(&ao_adc_ring);
+		while (i && cal_adc_ring != ao_adc_head) {
+			accel_total += (int32_t) ao_adc_ring[cal_adc_ring].accel;
+			cal_adc_ring = ao_adc_ring_next(cal_adc_ring);
+			i--;
+		}
+	}
+	return (int16_t) (accel_total / ZERO_G_SAMPLES);
+}
+void
+ao_config_accel_zero_g_set(void) __reentrant
+{
+	ao_cmd_decimal();
+	if (ao_cmd_status != ao_cmd_success)
+		return;
+	if (ao_cmd_lex_i == 0)
+		ao_cmd_lex_i = ao_config_accel_zero_g_auto();
+	ao_mutex_get(&ao_config_mutex);
+	_ao_config_get();
+	ao_config.accel_zero_g = ao_cmd_lex_i;
+	ao_config_dirty = 1;
+	ao_mutex_put(&ao_config_mutex);
+	ao_config_accel_zero_g_show();
+}
+
+struct ao_config_var {
+	uint8_t		cmd;
+	void		(*set)(void) __reentrant;
+	void		(*show)(void) __reentrant;
+	const char	*help;
+};
+
+void
+ao_config_help(void) __reentrant;
+
+void
+ao_config_show(void) __reentrant;
+
+void
+ao_config_write(void) __reentrant;
+
+__code struct ao_config_var ao_config_vars[] = {
+	{ 'm',	ao_config_main_deploy_set,	ao_config_main_deploy_show,
+		"m <meters>  Set height above launch for main deploy (in meters)" },
+	{ 'a',	ao_config_accel_zero_g_set,	ao_config_accel_zero_g_show,
+		"a <value>   Set accelerometer zero g point (0 for auto)" },
+	{ 'r',	ao_config_radio_channel_set,	ao_config_radio_channel_show,
+		"r <channel> Set radio channel (freq = 434.550 + channel * .1)" },
+	{ 'c',	ao_config_callsign_set,		ao_config_callsign_show,
+		"c <call>    Set callsign broadcast in each packet (8 char max)" },
+	{ 's',	ao_config_show,			ao_config_show,
+		"s           Show current config values" },
+	{ 'w',	ao_config_write,		ao_config_write,
+		"w           Write current values to eeprom" },
+	{ '?',	ao_config_help,			ao_config_help,
+		"?           Show available config variables" },
+	{ 0,	ao_config_main_deploy_set,	ao_config_main_deploy_show,
+		NULL },
+};
+
+void
+ao_config_set(void)
+{
+	uint8_t	c;
+	uint8_t cmd;
+	void (*__xdata func)(void) __reentrant;
+
+	ao_cmd_white();
+	c = ao_cmd_lex_c;
+	ao_cmd_lex();
+	func = 0;
+	for (cmd = 0; ao_config_vars[cmd].cmd != '\0'; cmd++)
+		if (ao_config_vars[cmd].cmd == c) {
+			func = ao_config_vars[cmd].set;
+			break;
+		}
+	if (func)
+		(*func)();
+	else
+		ao_cmd_status = ao_cmd_syntax_error;
+}
+
+void
+ao_config_help(void) __reentrant
+{
+	uint8_t cmd;
+	for (cmd = 0; ao_config_vars[cmd].cmd != '\0'; cmd++)
+		puts (ao_config_vars[cmd].help);
+}
+
+void
+ao_config_show(void) __reentrant
+{
+	uint8_t cmd;
+	for (cmd = 0; ao_config_vars[cmd].cmd != '\0'; cmd++)
+		if (ao_config_vars[cmd].show != ao_config_vars[cmd].set)
+			(*ao_config_vars[cmd].show)();
+}
+
+void
+ao_config_write(void) __reentrant
+{
+	ao_mutex_get(&ao_config_mutex);
+	if (ao_config_dirty) {
+		_ao_config_put();
+		ao_config_dirty = 0;
+		printf("Saved\n");
+	}
+	ao_mutex_put(&ao_config_mutex);
+}
+
+__code struct ao_cmds ao_config_cmds[] = {
+	{ 'c',	ao_config_set,	"c <var> <value>                    Set config variable (? for help, s to show)" },
+	{ '\0', ao_config_set, NULL },
+};
+
+void
+ao_config_init(void)
+{
+	ao_cmd_register(&ao_config_cmds[0]);
+}