mirror of
https://github.com/dalathegreat/Battery-Emulator.git
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92 lines
3.3 KiB
C++
92 lines
3.3 KiB
C++
// =================================================================================================
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// eModbus: Copyright 2020 by Michael Harwerth, Bert Melis and the contributors to eModbus
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// MIT license - see license.md for details
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// =================================================================================================
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#ifndef _MODBUS_SERVER_RTU_H
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#define _MODBUS_SERVER_RTU_H
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#include "options.h"
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#if HAS_FREERTOS
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#include <Arduino.h>
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#include "Stream.h"
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#include "ModbusServer.h"
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#include "RTUutils.h"
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extern "C" {
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#include <freertos/FreeRTOS.h>
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#include <freertos/task.h>
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}
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// Specal function signature for broadcast or sniffer listeners
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using MSRlistener = std::function<void(ModbusMessage msg)>;
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class ModbusServerRTU : public ModbusServer {
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public:
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// Constructors
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explicit ModbusServerRTU(uint32_t timeout, int rtsPin = -1);
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ModbusServerRTU(uint32_t timeout, RTScallback rts);
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// Destructor
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~ModbusServerRTU();
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// begin: create task with RTU server to accept requests
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void begin(Stream& serial, uint32_t baudRate, int coreID = -1);
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void begin(HardwareSerial& serial, int coreID = -1);
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// end: kill server task
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void end();
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// Toggle protocol to ModbusASCII
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void useModbusASCII(unsigned long timeout = 1000);
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// Toggle protocol to ModbusRTU
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void useModbusRTU();
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// Inquire protocol mode
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bool isModbusASCII();
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// Toggle skipping of leading 0x00 byte
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void skipLeading0x00(bool onOff = true);
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// Special case: worker to react on broadcast requests
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void registerBroadcastWorker(MSRlistener worker);
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// Even more special: register a sniffer worker
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void registerSniffer(MSRlistener worker);
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protected:
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// Prevent copy construction and assignment
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ModbusServerRTU(ModbusServerRTU& m) = delete;
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ModbusServerRTU& operator=(ModbusServerRTU& m) = delete;
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inline void isInstance() { } // Make class instantiable
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// internal common begin function
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void doBegin(uint32_t baudRate, int coreID);
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static uint8_t instanceCounter; // Number of RTU servers created (for task names)
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TaskHandle_t serverTask; // task of the started server
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uint32_t serverTimeout; // given timeout for receive. Does not really
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// matter for a server, but is needed in
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// RTUutils. After timeout without any message
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// the server will pause ~1ms and start
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// receive again.
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Stream *MSRserial; // The serial interface to use
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uint32_t MSRinterval; // Bus quiet time between messages
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unsigned long MSRlastMicros; // microsecond time stamp of last bus activity
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int8_t MSRrtsPin; // GPIO number of the RS485 module's RE/DE line
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RTScallback MRTSrts; // Callback to set the RTS line to HIGH/LOW
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bool MSRuseASCII; // true=ModbusASCII, false=ModbusRTU
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bool MSRskipLeadingZeroByte; // true=first byte ignored if 0x00, false=all bytes accepted
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MSRlistener listener; // Broadcast listener
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MSRlistener sniffer; // Sniffer listener
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// serve: loop function for server task
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static void serve(ModbusServerRTU *myself);
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};
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#endif // HAS_FREERTOS
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#endif // INCLUDE GUARD
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