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Improve RTU handling

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Daniel Öster 2023-02-27 13:12:18 -08:00 • committed by GitHub
parent 2f7e5fb1fa
commit 9c694058cb
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9 changed files with 819 additions and 822 deletions
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15
Software/ModbusClientRTU.h
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@ -10,7 +10,7 @@
#if HAS_FREERTOS
#include "ModbusClient.h"
#include "HardwareSerial.h"
#include "Stream.h"
#include "RTUutils.h"
#include <queue>
#include <vector>
@ -22,16 +22,18 @@ using std::queue;
class ModbusClientRTU : public ModbusClient {
public:
// Constructor takes Serial reference and optional DE/RE pin and queue limit
explicit ModbusClientRTU(HardwareSerial& serial, int8_t rtsPin = -1, uint16_t queueLimit = 100);
explicit ModbusClientRTU(int8_t rtsPin = -1, uint16_t queueLimit = 100);
// Alternative Constructor takes Serial reference and RTS line toggle callback
explicit ModbusClientRTU(HardwareSerial& serial, RTScallback rts, uint16_t queueLimit = 100);
explicit ModbusClientRTU(RTScallback rts, uint16_t queueLimit = 100);
// Destructor: clean up queue, task etc.
~ModbusClientRTU();
// begin: start worker task
void begin(int coreID = -1, uint32_t interval = 0);
void begin(Stream& serial, uint32_t baudrate, int coreID = -1);
// Special variant for HardwareSerial
void begin(HardwareSerial& serial, int coreID = -1);
// end: stop the worker
void end();
@ -81,12 +83,15 @@ protected:
// receive: get response via Serial
ModbusMessage receive(const ModbusMessage request);
// start background task
void doBegin(uint32_t baudRate, int coreID);
void isInstance() { return; } // make class instantiable
queue<RequestEntry> requests; // Queue to hold requests to be processed
#if USE_MUTEX
mutex qLock; // Mutex to protect queue
#endif
HardwareSerial& MR_serial; // Ptr to the serial interface used
Stream *MR_serial; // Ptr to the serial interface used
unsigned long MR_lastMicros; // Microseconds since last bus activity
uint32_t MR_interval; // Modbus RTU bus quiet time
int8_t MR_rtsPin; // GPIO pin to toggle RS485 DE/RE line. -1 if none.