From e96562e36df96ca755d527e479e597ae4e4e09e1 Mon Sep 17 00:00:00 2001
From: Selene ToyKeeper
Date: Fri, 18 Aug 2017 18:12:17 -0600
Subject: Some early ideas for Round Table.  Nothing close to compile-able yet.

---
 RoundTable/momentary.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 RoundTable/momentary.c

(limited to 'RoundTable/momentary.c')

diff --git a/RoundTable/momentary.c b/RoundTable/momentary.c
new file mode 100644
index 0000000..120406e
--- /dev/null
+++ b/RoundTable/momentary.c
@@ -0,0 +1,68 @@
+/*
+ * Momentary: Very simple example UI for RoundTable.
+ * Is intended to be the simplest possible RT e-switch UI.
+ * The light is in while the button is held; off otherwise.
+ *
+ * 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/>.
+ */
+
+#define RT_EMISAR_D4_LAYOUT
+#include "round-table.c"
+
+volatile uint8_t brightness;
+
+void light_on() {
+    PWM1_LVL = brightness;
+    PWM2_LVL = 0;
+}
+
+void light_off() {
+    PWM1_LVL = 0;
+    PWM2_LVL = 0;
+}
+
+uint8_t momentary_state(EventPtr event, uint16_t arg) {
+    switch(event) {
+
+        case EV_press:
+            brightness = 255;
+            light_on();
+            // reset current event queue
+            empty_event_sequence();
+            return 0;
+
+        case EV_release:
+            light_off();
+            // reset current event queue
+            empty_event_sequence();
+            return 0;
+
+        // LVP / low-voltage protection
+        case EV_voltage_low:
+        case EV_voltage_critical:
+            if (brightness > 0) brightness >>= 1;
+            else {
+                light_off();
+                standby_mode();
+            }
+            return 0;
+    }
+    return 1;  // event not handled
+}
+
+void setup() {
+    set_state(momentary_state);
+}
-- 
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