simple UIsimple-ui

1 files changed, 210 insertions, 0 deletions

diff --git a/ui/simple/simple.c b/ui/simple/simple.c
new file mode 100644
index 0000000..885f8a8
--- /dev/null
+++ b/ui/simple/simple.c
@@ -0,0 +1,210 @@
+/*
+ * simple.c: Yet another UI for the Emisar D3AA
+ * Copyright (C) 2026 git@apexo.de
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+/*
+ * States:
+ * - Off : all lights off, standby
+ * - Aux : aux RGB shows color-coded battery voltage
+ * - On  : main LED on (one of 4 different brightness levels),
+ *         aux RGB shows color-coded battery voltage
+ *
+ * Transitions:
+ * - Off + Click -> Aux
+ * - Aux + Click -> On
+ * - Aux + 5s -> Off
+ * - On + Click -> Aux
+ * - On + Hold -> cycle brightness levels, store on release
+ */
+
+#include "arch/mcu.h"
+
+#include incfile(CFG_H)
+
+#ifdef HWDEF_H
+#include incfile(HWDEF_H)
+#endif
+
+#include "fsm/spaghetti-monster.h"
+
+#ifdef HWDEF_C
+#include incfile(HWDEF_C)
+#endif
+
+#define NUM_LEVELS 4
+#define CEIL SIMPLE_UI_CEIL
+
+static const uint8_t brightness_levels[NUM_LEVELS] = {
+    1,
+    1 * CEIL / 10,
+    3 * CEIL / 10,
+    CEIL,
+};
+
+#define HOLD_TICKS_PER_LEVEL 47  // cycle time ca 0.75s (47/62 Hz) 
+#define AUX_TIMEOUT_TICKS 310  // ca. 5s
+
+uint8_t off_state(Event event, uint16_t arg);
+uint8_t aux_state(Event event, uint16_t arg);
+uint8_t on_state(Event event, uint16_t arg);
+
+uint8_t current_level_idx = 0;
+uint8_t current_level = 0;
+uint8_t thermal_limit = SIMPLE_UI_CEIL;
+
+static const uint8_t voltage_levels[] = {
+        0, 0,    // black
+    #ifdef DUAL_VOLTAGE_FLOOR
+    // NiMH
+     9*dV, 0x01, // R
+    10*dV, 0x05, // R+G
+    11*dV, 0x04, //   G
+    12*dV, 0x14, //   G+B
+    13*dV, 0x10, //     B
+    14*dV, 0x11, // R + B
+    16*dV, 0x15, // R+G+B
+    20*dV, 0,    // black
+    #endif
+    // li-ion
+    29*dV, 0x01, // R
+    33*dV, 0x05, // R+G
+    35*dV, 0x04, //   G
+    37*dV, 0x14, //   G+B
+    39*dV, 0x10, //     B
+    41*dV, 0x11, // R + B
+    44*dV, 0x15, // R+G+B
+      255, 0x15, // R+G+B
+};
+
+static uint8_t voltage_color(void) {
+    uint8_t v = voltage;
+    if (v == 0) return 0;
+    v -= 1;
+    uint8_t i;
+    for (i = 0; v > voltage_levels[i]; i += 2) {}
+    return voltage_levels[i - 1];
+}
+
+void set_level_therm(uint8_t value, uint16_t thermal_headroom, uint16_t thermal_overshoot) {
+    if (current_level == thermal_limit && thermal_headroom > 0) {
+        if (thermal_headroom >= CEIL - thermal_limit) {
+            thermal_limit = CEIL;
+        } else {
+            thermal_limit += thermal_headroom;
+        }
+    }
+
+    if (thermal_overshoot > 0) {
+        if (thermal_overshoot >= current_level) {
+            thermal_limit = 1;
+        } else {
+            thermal_limit = current_level - thermal_overshoot;
+        }
+    }
+
+    current_level = value <= thermal_limit ? value : thermal_limit;
+    set_level(current_level);
+}
+
+uint8_t off_state(Event event, uint16_t arg) {
+    if (event == EV_enter_state) {
+        set_level(0);
+        rgb_led_set(0);
+        button_led_set(0);
+        go_to_standby = 1;
+        return EVENT_HANDLED;
+    }
+
+    if (event == EV_1click) {
+        set_state(aux_state, 0);
+        return EVENT_HANDLED;
+    }
+
+    return EVENT_NOT_HANDLED;
+}
+
+uint8_t aux_state(Event event, uint16_t arg) {
+    if (event == EV_enter_state) {
+        set_level(0);
+        rgb_led_set(voltage_color() << 1);
+        button_led_set(1);
+        return EVENT_HANDLED;
+    }
+
+    if (event == EV_1click) {
+        set_state(on_state, 0);
+        return EVENT_HANDLED;
+    }
+
+    if (event == EV_tick) {
+        if (arg >= AUX_TIMEOUT_TICKS) {
+            set_state(off_state, 0);
+        }
+        return EVENT_HANDLED;
+    }
+
+    return EVENT_NOT_HANDLED;
+}
+
+uint8_t on_state(Event event, uint16_t arg) {
+    if (event == EV_enter_state) {
+        set_level_therm(brightness_levels[current_level_idx], 0, 0);
+        rgb_led_set(voltage_color() << 1);
+        button_led_set(2);
+        return EVENT_HANDLED;
+    }
+
+    if (event == EV_tick) {
+        if ((arg & 63) == 0) {
+            rgb_led_set(voltage_color() << 1);
+        }
+        return EVENT_HANDLED;
+    }
+
+    if (event == EV_temperature_high) {
+        set_level_therm(brightness_levels[current_level_idx], 0, arg);
+        return EVENT_HANDLED;
+    }
+
+    if (event == EV_temperature_low) {
+        set_level_therm(brightness_levels[current_level_idx], arg, 0);
+        return EVENT_HANDLED;
+    }
+
+    if (event == EV_1click) {
+        set_state(aux_state, 0);
+        return EVENT_HANDLED;
+    }
+
+    if (event == EV_click1_hold) {
+        if (arg % HOLD_TICKS_PER_LEVEL == 0) {
+            current_level_idx = (current_level_idx + 1) % NUM_LEVELS;
+            set_level_therm(brightness_levels[current_level_idx], 0, 0);
+        }
+        return EVENT_HANDLED;
+    }
+
+    if (event == EV_click1_hold_release) {
+        eeprom[0] = current_level_idx;
+        save_eeprom();
+        return EVENT_HANDLED;
+    }
+
+    return EVENT_NOT_HANDLED;
+}
+
+void low_voltage(void) {
+    set_state(off_state, 0);
+}
+
+void setup(void) {
+    if (load_eeprom()) {
+        if (eeprom[0] < NUM_LEVELS)
+            current_level_idx = eeprom[0];
+    }
+    push_state(off_state, 0);
+}
+
+void loop(void) { }