From: Keith Packard <keithp@keithp.com>
Date: Wed, 13 May 2009 21:29:30 +0000 (-0700)
Subject: Indicate RSSI with a blinking LED
X-Git-Tag: 0.2~4
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=d085d43701e3cdd2119e947a9ae45baa78c80318

Indicate RSSI with a blinking LED

Blink the red LED at a rate proportional to the RSSI value.

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

diff --git a/Makefile b/Makefile
index ab72b413..d574c67c 100644
--- a/Makefile
+++ b/Makefile
@@ -50,7 +50,8 @@ TELE_COMMON_SRC = \
 # Receiver code
 #
 TELE_RECEIVER_SRC =\
-	ao_monitor.c
+	ao_monitor.c \
+	ao_rssi.c
 
 #
 # Shared Tele drivers (on TeleMetrum, TeleTerra, TeleDongle)
diff --git a/ao.h b/ao.h
index fb06df06..96dd02d0 100644
--- a/ao.h
+++ b/ao.h
@@ -44,7 +44,7 @@ struct ao_task {
 
 extern __xdata struct ao_task *__data ao_cur_task;
 
-#define AO_NUM_TASKS		10	/* maximum number of tasks */
+#define AO_NUM_TASKS		16	/* maximum number of tasks */
 #define AO_NO_TASK		0	/* no task id */
 
 /*
@@ -833,6 +833,16 @@ ao_config_get(void);
 void
 ao_config_init(void);
 
+/*
+ * ao_rssi.c
+ */
+
+void
+ao_rssi_set(int rssi_value);
+
+void
+ao_rssi_init(uint8_t rssi_led);
+
 /*
  * ao_product.c
  *
diff --git a/ao_monitor.c b/ao_monitor.c
index e05e84d8..5930afaa 100644
--- a/ao_monitor.c
+++ b/ao_monitor.c
@@ -55,6 +55,7 @@ ao_monitor(void)
 			       recv.telemetry.adc.sense_d,
 			       recv.telemetry.adc.sense_m);
 			ao_gps_print(&recv.telemetry.gps);
+			ao_rssi_set((int) recv.rssi - 74);
 		} else {
 			printf("CRC INVALID RSSI %3d\n", (int) recv.rssi - 74);
 		}
diff --git a/ao_rssi.c b/ao_rssi.c
new file mode 100644
index 00000000..6912b9a2
--- /dev/null
+++ b/ao_rssi.c
@@ -0,0 +1,53 @@
+/*
+ * 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"
+
+static __xdata volatile uint16_t	ao_rssi_time;
+static __xdata volatile uint16_t	ao_rssi_delay;
+static __xdata uint8_t			ao_rssi_led;
+
+void
+ao_rssi(void)
+{
+	for (;;) {
+		while ((int16_t) (ao_time() - ao_rssi_time) > AO_SEC_TO_TICKS(3))
+			ao_sleep(&ao_rssi_time);
+		ao_led_for(ao_rssi_led, AO_MS_TO_TICKS(100));
+		ao_delay(ao_rssi_delay);
+	}
+}
+
+void
+ao_rssi_set(int rssi_value)
+{
+	if (rssi_value > 0)
+		rssi_value = 0;
+	ao_rssi_delay = AO_MS_TO_TICKS((-rssi_value) * 5);
+	ao_rssi_time = ao_time();
+	ao_wakeup(&ao_rssi_time);
+}
+
+__xdata struct ao_task ao_rssi_task;
+
+void
+ao_rssi_init(uint8_t rssi_led)
+{
+	ao_rssi_led = rssi_led;
+	ao_rssi_delay = 0;
+	ao_add_task(&ao_rssi_task, ao_rssi, "rssi");
+}
diff --git a/ao_teledongle.c b/ao_teledongle.c
index af14472b..98163109 100644
--- a/ao_teledongle.c
+++ b/ao_teledongle.c
@@ -33,6 +33,7 @@ main(void)
 	ao_cmd_init();
 	ao_usb_init();
 	ao_monitor_init(AO_LED_GREEN);
+	ao_rssi_init(AO_LED_RED);
 	ao_radio_init();
 	ao_dbg_init();
 	ao_config_init();
diff --git a/ao_telemetrum.c b/ao_telemetrum.c
index d5d01f16..097b15d7 100644
--- a/ao_telemetrum.c
+++ b/ao_telemetrum.c
@@ -43,6 +43,7 @@ main(void)
 	ao_telemetry_init();
 	ao_radio_init();
 	ao_monitor_init(AO_LED_GREEN);
+	ao_rssi_init(AO_LED_RED);
 	ao_igniter_init();
 	ao_dbg_init();
 	ao_config_init();
diff --git a/ao_teleterra.c b/ao_teleterra.c
index b5ab4857..ed72cd4b 100644
--- a/ao_teleterra.c
+++ b/ao_teleterra.c
@@ -35,6 +35,7 @@ main(void)
 	ao_serial_init();
 	ao_gps_init();
 	ao_monitor_init(AO_LED_GREEN);
+	ao_monitor_init(AO_LED_RED);
 	ao_radio_init();
 	ao_dbg_init();
 	ao_config_init();
diff --git a/ao_tidongle.c b/ao_tidongle.c
index c8e165c2..4d9a77f7 100644
--- a/ao_tidongle.c
+++ b/ao_tidongle.c
@@ -33,6 +33,7 @@ main(void)
 	ao_cmd_init();
 	ao_usb_init();
 	ao_monitor_init(AO_LED_RED);
+	ao_rssi_init(AO_LED_RED);
 	ao_radio_init();
 	ao_dbg_init();
 	ao_config_init();