0ab43909c3
6.2.1.17 20181017 * Enable updated non-blocking PubSubClient as default MQTT client * Update TasmotaModbus and TasmotaSerial libraries for support of serial 8N2 communication * Add support for Pzem-003/017 DC Energy monitoring module (#3694) * Change support for Pzem-014/016 AC Energy monitoring module (#3694)
58 lines
1.7 KiB
C++
58 lines
1.7 KiB
C++
/*
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TasmotaModbus.h - Basic modbus wrapper for TasmotaSerial for Tasmota
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Copyright (C) 2018 Theo Arends
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This library is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef TasmotaModbus_h
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#define TasmotaModbus_h
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#include <Arduino.h>
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#include <TasmotaSerial.h>
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#define TM_MODBUS_BAUDRATE 9600 // Default baudrate
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class TasmotaModbus : public TasmotaSerial {
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public:
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TasmotaModbus(int receive_pin, int transmit_pin);
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virtual ~TasmotaModbus() {}
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int Begin(long speed = TM_MODBUS_BAUDRATE, int stop_bits = 1);
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void Send(uint8_t device_address, uint8_t function_code, uint16_t start_address, uint16_t register_count);
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bool ReceiveReady();
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/* Return codes:
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* 0 - No error
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* 1 - Illegal function
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* 2 - Illegal address
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* 3 - Illegal data
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* 4 - Slave error
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* 7 - Not enough minimal data received
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* 8 - Not enough data receieved
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* 9 - Crc error
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*/
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uint8_t ReceiveBuffer(uint8_t *buffer, uint8_t register_count);
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uint8_t Receive16BitRegister(uint16_t *value);
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uint8_t Receive32BitRegister(float *value);
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private:
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uint8_t mb_address;
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};
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#endif // TasmotaModbus_h
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