From 70e46100acf597014ce54cf3b642254ce1cba59b Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Tue, 5 Apr 2016 23:45:52 -0700
Subject: altos/telelcotwo: Add idle timeout
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Puts TeleLCOTwo in a low power state (drawing about 80µA) after a
timeout (default two minutes) to keep from killing the battery if the
device is left turned on.

Signed-off-by: Keith Packard <keithp@keithp.com>
---
 src/kernel/ao_config.c | 21 +++++++++++++++++++++
 src/kernel/ao_config.h |  3 ++-
 2 files changed, 23 insertions(+), 1 deletion(-)

(limited to 'src/kernel')

diff --git a/src/kernel/ao_config.c b/src/kernel/ao_config.c
index d51fbb41..f95ca893 100644
--- a/src/kernel/ao_config.c
+++ b/src/kernel/ao_config.c
@@ -227,6 +227,8 @@ _ao_config_get(void)
 #if HAS_FIXED_PAD_BOX
 		if (minor < 22)
 			ao_config.pad_box = 1;
+		if (minor < 23)
+			ao_config.pad_idle = 120;
 #endif
 		ao_config.minor = AO_CONFIG_MINOR;
 		ao_config_dirty = 1;
@@ -920,6 +922,23 @@ ao_config_pad_box_set(void)
 	ao_config.pad_box = ao_cmd_lex_i;
 	_ao_config_edit_finish();
 }
+
+void
+ao_config_pad_idle_show(void)
+{
+	printf ("Idle timeout: %d\n", ao_config.pad_idle);
+}
+
+void
+ao_config_pad_idle_set(void)
+{
+	ao_cmd_decimal();
+	if (ao_cmd_status != ao_cmd_success)
+		return;
+	_ao_config_edit_start();
+	ao_config.pad_idle = ao_cmd_lex_i;
+	_ao_config_edit_finish();
+}
 #endif
 
 struct ao_config_var {
@@ -1019,6 +1038,8 @@ __code struct ao_config_var ao_config_vars[] = {
 #if HAS_FIXED_PAD_BOX
 	{ "B <box>\0Set pad box (1-99)",
 	  ao_config_pad_box_set, ao_config_pad_box_show },
+	{ "i <seconds>\0Set idle timeout (0 disable)",
+	  ao_config_pad_idle_set, ao_config_pad_idle_show },
 #endif
 	{ "s\0Show",
 	  ao_config_show,		0 },
diff --git a/src/kernel/ao_config.h b/src/kernel/ao_config.h
index f4e9af44..3c73ea49 100644
--- a/src/kernel/ao_config.h
+++ b/src/kernel/ao_config.h
@@ -57,7 +57,7 @@
 #endif
 
 #define AO_CONFIG_MAJOR	1
-#define AO_CONFIG_MINOR	22
+#define AO_CONFIG_MINOR	23
 
 #define AO_AES_LEN 16
 
@@ -120,6 +120,7 @@ struct ao_config {
 #endif
 #if HAS_FIXED_PAD_BOX
 	uint8_t		pad_box;		/* minor version 22 */
+	uint8_t		pad_idle;		/* minor version 23 */
 #endif
 };
 
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