port to platformio

src/inputs/DMX.cpp

@@ -0,0 +1,79 @@
+#if 0
+#include "Particle.h"
+#include "../Input.h"
+#include "../colors.h"
+#include "../Static.h"
+
+volatile uint8_t DmxRxField[8];
+volatile uint16_t DmxAddress;
+enum { IDLE, BREAK, STARTB, STARTADR };
+
+volatile uint8_t gDmxState;
+
+class DMXInput: public InputSource {
+public:
+    void init() {
+        UCSR1B = (1<<RXEN1) | (1<<RXCE1);
+        Serial1.begin(250000, SERIAL_8N2);
+    }
+
+    static void handleInterrupt() {
+        static uint16_t DmxCount;
+        uint8_t USARTstate = UCSR1A;
+        uint8_t DmxByte = UDR1;
+        uint8_t DmxState = gDmxState;
+
+        if (USARTstate &(1<<FE1)) {
+            DmxCount = DmxAddress;
+            gDmxState = BREAK;
+        } else if (DmxState == BREAK) {
+            if (DmxByte == 0) {
+                gDmxState = STARTB;
+            } else {
+                gDmxState = IDLE;
+            }
+        } else if (DmxState == STARTB) {
+            if (--DmxCount == 0) {
+                DmxCount = 1;
+                DmxRxField[0] = DmxByte;
+                gDmxState = STARTADR;
+            }
+        } else if (DmxState == STARTADR) {
+            DmxRxField[DmxCount++] = DmxByte;
+            if (DmxCount >= sizeof(DmxRxField)) {
+                gDmxState = IDLE;
+            }
+        }
+    }
+
+    virtual void update() override {
+        bool hasUpdate = false;
+        if (gDmxState == IDLE) {
+            for(int i = 0; i < 8; i++) {
+                if (m_lastReadFields[i] != DmxRxField[i]) {
+                    hasUpdate = true;
+                    m_lastReadFields[i] = DmxRxField[i];
+                }
+            }
+        }
+        if (hasUpdate) {
+            m_lastReadEvent = InputEvent(InputEvent::SetColor, {m_lastReadFields[0], m_lastReadFields[1], m_lastReadFields[2]});
+        }
+        m_lastEvent = m_lastReadEvent;
+        m_lastReadEvent = InputEvent();
+    }
+
+    virtual InputEvent read() const override {
+        return m_lastEvent;
+    }
+
+private:
+    InputEvent m_lastEvent;
+    InputEvent m_lastReadEvent;
+    uint8_t m_lastReadFields[8];
+};
+
+ISR(USART1_RX_vect) {
+    DMXInput::handleInterrupt();
+}
+#endif