first commit DMX NeoPixel code

DMX_NeoPixels/Conceptinetics.h

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+// SPDX-FileCopyrightText: 2013 W.A. van der Meeren <[email protected]>
+//
+// SPDX-License-Identifier: LGPL-3.0-or-later
+/*
+  Conceptinetics.h - DMX library for Arduino
+  Copyright (c) 2013 W.A. van der Meeren <[email protected]>.  All right reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 3 of the License, or (at your option) any later version.
+
+  This library 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
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+/*
+  This code has been tested using the following hardware:
+
+  - Arduino / Genuino UNO R3 using a CTC-DRA-13-1 ISOLATED DMX-RDM SHIELD 
+  - Arduino / Genuino MEGA2560 R3 using a CTC-DRA-13-1 ISOLATED DMX-RDM SHIELD 
+  - Arduino / Genuino Leonardo using a CTC-DRA-13-R2 ISOLATED DMX-RDM SHIELD 
+
+  - CTC-DRA-10-1 and CTC-DRA-10-R2 is the Non-isolated costs effective DMX-RDM shield 
+*/
+
+
+#ifndef CONCEPTINETICS_H_
+#define CONCEPTINETICS_H_
+
+#include <Arduino.h>
+#include <inttypes.h>
+
+#include "Rdm_Uid.h"
+#include "Rdm_Defines.h"
+
+#define DMX_MAX_FRAMESIZE       513     // Startbyte + 512 Slots
+#define DMX_MIN_FRAMESIZE       2       // Startbyte + 1 Slot
+
+#define DMX_MAX_FRAMECHANNELS   512     // Maxmim number of channer per frame
+
+#define DMX_STARTCODE_SIZE      1       // Size of startcode in bytes
+
+#define DMX_START_CODE          0x0     // Start code for a DMX frame
+#define RDM_START_CODE          0xcc    // Start code for a RDM frame
+
+// Uncomment to enable Inter slot delay ) (avg < 76uSec) ... 
+// mimum is zero according to specification
+// #define DMX_IBG				    10      // Inter slot time
+
+// Speed your Arduino is running on in Hz.
+#define F_OSC 				    16000000UL
+
+// DMX Baudrate, this should be 250000
+#define DMX_BAUD_RATE 		    250000
+
+// The baudrate used to automaticly generate a break within
+// your ISR.. make it lower to generate longer breaks
+//#define DMX_BREAK_RATE 	 	    99900       
+
+// 2017, Feb 28: Set to appox 176us
+#define DMX_BREAK_RATE          49950       
+
+// Tabel 3-2 ANSI_E1-20-2010 
+// Minimum time to allow the datalink to 'turn arround'
+#define MIN_RESPONDER_PACKET_SPACING_USEC   176 /*176*/
+
+// Define which serial port to use as DMX port, only one can be 
+// selected at the time by uncommenting one of the following
+// lines
+#define USE_DMX_SERIAL_0
+//#define USE_DMX_SERIAL_1
+//#define USE_DMX_SERIAL_2
+//#define USE_DMX_SERIAL_3
+
+namespace dmx 
+{
+    enum dmxState 
+	{
+        dmxUnknown,
+        dmxStartByte,
+        dmxWaitStartAddress,
+        dmxData,
+        dmxFrameReady,
+	};
+};
+
+namespace rdm
+{
+    enum rdmState
+    {
+        rdmUnknown,
+        rdmStartByte,
+        rdmSubStartCode,
+        rdmMessageLength,
+        rdmData,
+        rdmChecksumHigh,
+        rdmChecksumLow,
+        rdmFrameReady,
+    };
+};
+
+struct IFrameBuffer
+{
+    virtual uint16_t    getBufferSize   ( void ) = 0;        
+
+    virtual uint8_t     getSlotValue    ( uint16_t index ) = 0;
+    virtual void        setSlotValue    ( uint16_t index, uint8_t value ) = 0;
+};
+
+class DMX_FrameBuffer : IFrameBuffer
+{
+    public:
+        //
+        // Constructor buffersize = 1-513
+        //
+        DMX_FrameBuffer     ( uint16_t buffer_size );
+        DMX_FrameBuffer     ( DMX_FrameBuffer &buffer );
+        ~DMX_FrameBuffer    ( void );
+
+        uint16_t getBufferSize ( void );        
+
+        uint8_t getSlotValue ( uint16_t index );
+        void    setSlotValue ( uint16_t index, uint8_t value );
+        void    setSlotRange ( uint16_t start, uint16_t end, uint8_t value );
+        void    clear ( void );        
+
+        uint8_t &operator[] ( uint16_t index );
+
+    private:
+
+        uint8_t     *m_refcount;
+        uint16_t    m_bufferSize;
+        uint8_t     *m_buffer;      
+};
+
+
+//
+// DMX Master controller
+//
+class DMX_Master
+{
+    public:
+        // Run the DMX master from a pre allocated frame buffer which
+        // you have fully under your own control
+        DMX_Master ( DMX_FrameBuffer &buffer, int readEnablePin  );
+
+        // Run the DMX master by giving a predefined maximum number of
+        // channels to support
+        DMX_Master ( uint16_t maxChannel, int readEnablePin );
+
+        ~DMX_Master ( void );
+
+        void enable  ( void );              // Start transmitting
+        void disable ( void );              // Stop transmitting
+
+        // Get reference to the internal framebuffer
+        DMX_FrameBuffer &getBuffer ( void );
+
+        // Update channel values
+        void setChannelValue ( uint16_t channel, uint8_t value );
+        void setChannelRange ( uint16_t start, uint16_t end, uint8_t value );
+
+    public:
+        //
+        // Manual control over the break period
+        //
+        void setAutoBreakMode ( void );     // Generated from ISR
+        void setManualBreakMode ( void );   // Generate manually
+
+        uint8_t autoBreakEnabled ( void );
+
+        // We are waiting for a manual break to be generated 
+        uint8_t waitingBreak ( void );
+
+        // Generate break and start transmission of frame
+        void breakAndContinue ( uint8_t breakLength_us = 100 );
+
+
+    protected:
+        void setStartCode ( uint8_t value ); 
+
+
+    private:
+        DMX_FrameBuffer m_frameBuffer;
+        uint8_t         m_autoBreak;
+};
+
+
+//
+// DMX Slave controller
+//
+class DMX_Slave : public DMX_FrameBuffer
+{
+    public:
+        DMX_Slave ( DMX_FrameBuffer &buffer, int readEnablePin = -1 );
+
+        // nrChannels is the consecutive DMX512 slots required
+        // to operate this slave device
+        DMX_Slave ( uint16_t nrChannels, int readEnablePin = -1 );
+
+        ~DMX_Slave ( void );
+
+        void enable     ( void );           // Enable receiver
+        void disable    ( void );           // Disable receiver
+
+
+        // Get reference to the internal framebuffer
+        DMX_FrameBuffer &getBuffer ( void );
+
+        uint8_t  getChannelValue ( uint16_t channel );
+
+        uint16_t getStartAddress ( void );
+        void     setStartAddress ( uint16_t );
+
+
+        // Process incoming byte from USART
+        bool processIncoming   ( uint8_t val, bool first = false );
+
+        // Register on receive complete callback in case
+        // of time critical applications
+        void onReceiveComplete ( void (*func)(unsigned short) );
+
+    protected:
+
+
+    private:
+        uint16_t        m_startAddress;     // Slave start address
+        dmx::dmxState   m_state;
+
+        static void (*event_onFrameReceived)(unsigned short channelsReceived);
+};
+
+
+class RDM_FrameBuffer : public IFrameBuffer
+{
+    public:
+        //
+        // Constructor
+        //
+        RDM_FrameBuffer     ( void ) {};
+        ~RDM_FrameBuffer    ( void ) {};
+
+        uint16_t getBufferSize ( void );        
+
+        uint8_t getSlotValue ( uint16_t index );
+        void    setSlotValue ( uint16_t index, uint8_t value );
+        void    clear ( void );        
+
+        uint8_t &operator[] ( uint16_t index );
+
+    public: // functions to provide access from USART       
+        // Process incoming byte from USART, 
+        // returns false when no more data is accepted
+        bool processIncoming ( uint8_t val, bool first = false );
+
+        // Process outgoing byte to USART
+        // returns false when no more data is available
+        bool fetchOutgoing ( volatile uint8_t *udr, bool first = false );
+
+    protected:
+        // Process received frame
+        virtual void processFrame ( void ) = 0;
+
+    //private:
+    protected:
+        rdm::rdmState   m_state;       // State for pushing the message in
+        RDM_Message     m_msg;
+        RDM_Checksum    m_csRecv;      // Checksum received in rdm message
+};
+
+//
+// RDM_Responder 
+//
+class RDM_Responder : public RDM_FrameBuffer
+{
+    public:
+        //
+        // m        = manufacturer id (16bits)
+        // d1-d4    = device id (32bits)
+        //
+        RDM_Responder   ( uint16_t m, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, DMX_Slave &slave);
+        ~RDM_Responder  ( void );
+
+        void    setDeviceInfo 
+                ( 
+                    uint16_t deviceModelId, 
+                    rdm::RdmProductCategory productCategory,
+                    uint8_t personalities = 1,
+                    uint8_t personality = 1
+                )
+        {
+            m_DeviceModelId         = deviceModelId;
+            m_ProductCategory       = productCategory;
+            m_Personalities         = personalities;
+            m_Personality           = personality;
+        };
+
+        //
+        // Set vendor software version id
+        //
+        // v1 = MOST SIGNIFICANT
+        // v2... 
+        // v3...
+        // v4 = LEAST SIGNIFICANT
+        //
+        void    setSoftwareVersionId ( uint8_t v1, uint8_t v2, uint8_t v3, uint8_t v4 )
+        {
+            m_SoftwareVersionId[0] = v1;
+            m_SoftwareVersionId[1] = v2;
+            m_SoftwareVersionId[2] = v3;
+            m_SoftwareVersionId[3] = v4;
+        }
+
+        // Currently no sensors and subdevices supported
+        // void    AddSensor ( void );
+        // void    AddSubDevice ( void );
+
+        uint8_t getPersonality ( void ) { return m_Personality; };
+        void    setPersonality ( uint8_t personality ) { m_Personality = personality; };
+
+        // Register on identify device event handler
+        void    onIdentifyDevice ( void (*func)(bool) );
+        void    onDeviceLabelChanged ( void (*func) (const char*, uint8_t) );
+        void    onDMXStartAddressChanged ( void (*func) (uint16_t) );
+        void    onDMXPersonalityChanged ( void (*func) (uint8_t) );
+
+
+        // Set the device label
+        void    setDeviceLabel ( const char *label, size_t len );
+
+        // Enable, Disable rdm responder
+        void enable ( void )    { m_rdmStatus.enabled = true; m_rdmStatus.mute = false; };
+        void disable ( void )   { m_rdmStatus.enabled = false; };
+
+        union
+        {
+            uint8_t  raw;
+            struct
+            {
+                uint8_t mute:1; 
+                uint8_t ident:1;
+                uint8_t enabled:1;  // Rdm responder enable/disable
+            };
+        } m_rdmStatus;
+
+
+    protected:  
+        virtual void processFrame ( void );
+
+        // Discovery to unque brach packets only requires
+        // the data part of the packet to be transmitted
+        // without breaks or header
+        void repondDiscUniqueBranch ( void );
+
+        // Helpers for generating response packets which 
+        // have larger datafields
+        void populateDeviceInfo ( void );
+
+    private:
+        RDM_Uid                     m_devid;            // Holds our unique device ID
+        uint8_t                     m_Personalities;    // The total number of supported personalities
+        uint8_t                     m_Personality;      // The currently active personality
+        uint16_t                    m_DeviceModelId;
+        uint8_t                     m_SoftwareVersionId[4]; // 32 bit Software version
+        rdm::RdmProductCategory     m_ProductCategory;
+
+        char                        m_deviceLabel[32];  // Device label
+
+        static void (*event_onIdentifyDevice)(bool);
+        static void (*event_onDeviceLabelChanged)(const char*, uint8_t);
+        static void (*event_onDMXStartAddressChanged)(uint16_t);
+        static void (*event_onDMXPersonalityChanged)(uint8_t);
+};
+
+
+#endif /* CONCEPTINETICS_H_ */