1 files changed, 53 insertions, 0 deletions
diff --git a/spaghetti-monster/fsm-standby.c b/spaghetti-monster/fsm-standby.c
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+++ b/spaghetti-monster/fsm-standby.c
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+/*
+ * fsm-standby.c: standby mode functions for SpaghettiMonster.
+ *
+ * Copyright (C) 2017 Selene ToyKeeper
+ *
+ * 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef FSM_STANDBY_C
+#define FSM_STANDBY_C
+
+#include <avr/interrupt.h>
+#include <avr/sleep.h>
+
+#include "fsm-adc.h"
+#include "fsm-wdt.h"
+#include "fsm-pcint.h"
+
+// low-power standby mode used while off but power still connected
+#define standby_mode sleep_until_eswitch_pressed
+void sleep_until_eswitch_pressed()
+{
+    WDT_off();
+    ADC_off();
+
+    // make sure switch isn't currently pressed
+    while (button_is_pressed()) {}
+
+    PCINT_on();  // wake on e-switch event
+
+    sleep_enable();
+    sleep_bod_disable();
+    sleep_cpu();  // wait here
+
+    // something happened; wake up
+    sleep_disable();
+    PCINT_on();
+    ADC_on();
+    WDT_on();
+}
+
+#endif