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);