animations: power: make configurable

src/animations/Power.cpp

@@ -0,0 +1,30 @@
+#include "./Power.h"
+#include "../Static.h"
+#include <ArduinoJson.h>
+
+void
+Power::handleConfigChange(const InputEvent& event)
+{
+    const JsonObject& cfg = *event.as<JsonObject>();
+    if (cfg.containsKey("power.milliamps")) {
+        m_milliamps = cfg["power.milliamps"];
+    }
+    if (cfg.containsKey("power.volts")) {
+        m_voltage = cfg["power.volts"];
+    }
+    if (cfg.containsKey("power.useBPM")) {
+        m_useBPM = cfg["power.useBPM"];
+    }
+    if (m_voltage == 0 || m_milliamps == 0) {
+      Log.notice("power: Impossible power config: %dma @ %dv", m_milliamps, m_voltage);
+      m_valid = false;
+    } else {
+      Log.notice("power: Configured to use %dma @ %dv", m_milliamps, m_voltage);
+      m_valid = true;
+      FastLED.setMaxPowerInVoltsAndMilliamps(m_voltage, m_milliamps);
+    }
+}
+
+
+STATIC_ALLOC(Power);
+STATIC_TASK(Power);

src/animations/Power.h

@@ -1,8 +1,7 @@
 #pragma once
 #include <Figments.h>
 
-template<uint8_t MaxBrightness = 255, uint32_t MaxMilliAmps = 500, uint32_t Voltage = 5>
-class Power: public Figment {
+class Power: public Figment, ConfigTaskMixin {
 public:
     Power() : Figment("Power") {state = Task::Running;}
 
@@ -24,11 +23,14 @@ public:
               m_beatDecay.set(0, 255);
               break;
             default:
-              return;
+              ConfigTaskMixin::handleEvent(evt);
         }
     }
 
+    void handleConfigChange(const InputEvent& event) override;
+
     void loop() override {
+        ConfigTaskMixin::loop();
         m_powerState.update();
         m_brightness.update();
         EVERY_N_MILLISECONDS(20) {
@@ -37,18 +39,23 @@ public:
     }
 
     void render(Display* dpy) const override {
-        const uint8_t decayedBrightness = scale8((uint8_t)m_brightness, ease8InOutCubic((uint8_t)m_beatDecay));
-        const uint8_t clippedBrightness = std::min(decayedBrightness, MaxBrightness);
+        if (F_LIKELY(m_valid)) {
+          const uint8_t decayedBrightness = scale8((uint8_t)m_brightness, m_useBPM ? ease8InOutCubic((uint8_t)m_beatDecay) : 255);
+          const uint8_t clippedBrightness = std::min(decayedBrightness, (uint8_t)255);
           const uint8_t scaledBrightness = scale8(m_powerState, clippedBrightness);
           const uint8_t videoBrightness = brighten8_video(scaledBrightness);
-        const uint8_t powerBrightness = calculate_max_brightness_for_power_mW(videoBrightness, Watts);
+          const uint8_t powerBrightness = calculate_max_brightness_for_power_mW(videoBrightness, m_voltage * m_milliamps);
           FastLED.setBrightness(powerBrightness);
         }
+    }
 
-    static constexpr uint32_t Watts = Voltage * MaxMilliAmps;
 
 private:
     AnimatedNumber m_powerState = 255;
-    AnimatedNumber m_brightness = MaxBrightness;
+    AnimatedNumber m_brightness = 255;
     AnimatedNumber m_beatDecay = 255;
+    uint8_t m_voltage = 5;
+    uint16_t m_milliamps = 500;
+    bool m_valid = true;
+    bool m_useBPM = false;
 };

src/main.cpp

@@ -13,30 +13,14 @@
 
 #include <time.h>
 
-#include "animations/Power.h"
-
 #include "inputs/ColorCycle.h"
 #include "inputs/Buttons.h"
 #include "SafeMode.h"
 
-#define MAX_BRIGHTNESS 255
-//#define PSU_MILLIAMPS 4800
-//#define PSU_MILLIAMPS 500
-//#define PSU_MILLIAMPS 1000
-#define PSU_MILLIAMPS 1000
-
-// Enable system thread, so rendering happens while booting
-//SYSTEM_THREAD(ENABLED);
-
-
 // Setup FastLED and the display
 CRGB leds[HardwareConfig::MAX_LED_NUM];
 Display dpy(leds, HardwareConfig::MAX_LED_NUM, Static<ConfigService>::instance()->coordMap());
 
-// Setup power management
-Power<MAX_BRIGHTNESS, PSU_MILLIAMPS> power;
-REGISTER_TASK(power);
-
 // FIXME: rewrite as static task
 /*FigmentFunc configDisplay([](Display* dpy) {
     uint8_t brightness = brighten8_video(beatsin8(60));