mirror of https://github.com/arendst/Tasmota.git
356 lines
11 KiB
C++
356 lines
11 KiB
C++
/*
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xnrg_22_bl6523.ino - BL6523 based Watt hour meter support for Tasmota
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Copyright (C) 2022 Jeevas Vasudevan
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This program 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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#ifdef USE_ENERGY_SENSOR
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#ifdef USE_BL6523
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/*********************************************************************************************\
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* Chinese BL6523 based Watt hour meter
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*
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* This meter provides accurate Voltage, Frequency, Ampere, Wattage, Power Factor, KWh
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* To use Tasmota the user needs to add an ESP8266 or ESP32
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* Three lines need to be connected via 1KOhh resistors to ESP from the main board(RX,TX GND)
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*
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* Connection Eg (ESP8266) - Non - Isolated:
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* BL6523 RX ->1KOhm-> ESP IO4(D2) (Should be Input Capable)
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* BL6523 TX ->1KOhm-> ESP IO5(D1) (Should be Input Capable)
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* BL6523 GND -> ESP GND
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*
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* Connection Eg (ESP32) - Non - Isolated:
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* BL6523 RX ->1KOhm-> ESP IO4 (Should be Input Capable)
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* BL6523 TX ->1KOhm-> ESP IO5 (Should be Input Capable)
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* BL6523 GND -> ESP GND
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*
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* To build add the below to user_config_override.h
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* #define USE_ENERGY_SENSOR // Enable Energy sensor framework
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* #define USE_BL6523 // Add support for Chinese BL6523 based Watt hour meter (+1k code)¸
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*
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* After Installation use the below template sample:
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* {"NAME":"BL6523 Smart Meter","GPIO":[0,0,0,0,7488,7520,0,0,0,0,0,0,0,0],"FLAG":0,"BASE":18}
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\*********************************************************************************************/
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#define XNRG_22 22
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#include <TasmotaSerial.h>
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#define BL6523_RX_DATASET_SIZE 2
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#define BL6523_TX_DATASET_SIZE 4
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#define BL6523_BAUD 4800
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#define BL6523_REG_AMPS 0x05
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#define BL6523_REG_VOLTS 0x07
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#define BL6523_REG_FREQ 0x09
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#define BL6523_REG_WATTS 0x0A
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#define BL6523_REG_POWF 0x08
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#define BL6523_REG_WATTHR 0x0C
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#define SINGLE_PHASE 0
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#define RX_WAIT 100
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#define BL6523_IREF 297899
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#define BL6523_UREF 13304
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#define BL6523_FREF 3907
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#define BL6523_PREF 707
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#define BL6523_PWHRREF_D 33 // Substract this from BL6523_PREF to get WattHr Div.
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TasmotaSerial *Bl6523RxSerial;
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TasmotaSerial *Bl6523TxSerial;
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struct BL6523
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{
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uint8_t type = 1;
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uint8_t valid = 0;
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uint8_t got_data_stone = 0;
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bool discovery_triggered = false;
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} Bl6523;
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bool Bl6523ReadData(void)
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{
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uint32_t powf_word = 0, powf_buf = 0, i = 0;
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float powf = 0.0f;
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if (!Bl6523RxSerial->available())
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{
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AddLog(LOG_LEVEL_DEBUG, PSTR("BL6:No Rx Data available" ));
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return false;
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}
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while ((Bl6523RxSerial->peek() != 0x35) && Bl6523RxSerial->available())
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{
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Bl6523RxSerial->read();
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}
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if (Bl6523RxSerial->available() < BL6523_RX_DATASET_SIZE)
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{
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AddLog(LOG_LEVEL_DEBUG, PSTR("BL6:Rx less than expected" ));
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return false;
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}
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uint8_t rx_buffer[BL6523_RX_DATASET_SIZE];
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Bl6523RxSerial->readBytes(rx_buffer, BL6523_RX_DATASET_SIZE);
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Bl6523RxSerial->flush(); // Make room for another burst
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AddLogBuffer(LOG_LEVEL_DEBUG_MORE, rx_buffer, BL6523_RX_DATASET_SIZE);
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i=0;
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while (Bl6523TxSerial->available() < BL6523_TX_DATASET_SIZE)
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{
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// sleep till TX buffer is full
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delay(10);
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if ( i++ > RX_WAIT ){
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break;
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}
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}
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uint8_t tx_buffer[BL6523_TX_DATASET_SIZE];
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Bl6523TxSerial->readBytes(tx_buffer, BL6523_TX_DATASET_SIZE);
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Bl6523TxSerial->flush(); // Make room for another burst
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AddLogBuffer(LOG_LEVEL_DEBUG_MORE, tx_buffer, BL6523_TX_DATASET_SIZE);
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/* Checksum: （Addr+Data_L+Data_M+Data_H） & 0xFF, then byte invert */
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uint8_t crc = rx_buffer[1]; //Addr
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for (uint32_t i = 0; i < (BL6523_TX_DATASET_SIZE - 1); i++)
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{
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crc += tx_buffer[i]; //Add Data_L,Data_M and Data_H to Addr
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}
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crc &= 0xff; // Bitwise AND 0xFF
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crc = ~crc; // Invert the byte
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if (crc != tx_buffer[BL6523_TX_DATASET_SIZE - 1])
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{
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AddLog(LOG_LEVEL_DEBUG_MORE, PSTR("BL6:" D_CHECKSUM_FAILURE));
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Bl6523TxSerial->flush();
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Bl6523RxSerial->flush();
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return false;
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}
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/* WRITE DATA (format: command(write->0xCA) address data_low data_mid data_high checksum )
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WRITE Sample(RX):
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RX: CA 3E 55 00 00 6C (WRPROT - allow)
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RX: CA 14 00 00 10 DB (MODE)
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RX: CA 15 04 00 00 E6 (GAIN - IB 16x gain )
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RX: CA 19 08 00 00 DE (WA_CFDIV )
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RX: CA 3E AA 00 00 17 (WRPROT - disable)
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*/
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/* READ DATA (format: command(read->0x35) address data_low data_mid data_high checksum )
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READ Sample(RX-TX) Data:
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RX: 35 05 TX: E4 00 00 16 (IA rms )
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RX: 35 07 TX: D5 A3 2E 52 (V rms )
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RX: 35 09 TX: F0 FB 02 09 (FREQ)
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RX: 35 0A TX: 00 00 00 F5 (WATT)
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RX: 35 08 TX: 00 00 00 F7 (PF)
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RX: 35 0C TX: 00 00 00 F3 (WATT_HR)
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*/
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switch(rx_buffer[1]) {
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case BL6523_REG_AMPS :
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Energy->current[SINGLE_PHASE] = (float)((tx_buffer[2] << 16) | (tx_buffer[1] << 8) | tx_buffer[0]) / EnergyGetCalibration(ENERGY_CURRENT_CALIBRATION); // 1.260 A
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break;
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case BL6523_REG_VOLTS :
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Energy->voltage[SINGLE_PHASE] = (float)((tx_buffer[2] << 16) | (tx_buffer[1] << 8) | tx_buffer[0]) / EnergyGetCalibration(ENERGY_VOLTAGE_CALIBRATION); // 230.2 V
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break;
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case BL6523_REG_FREQ :
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Energy->frequency[SINGLE_PHASE] = (float)((tx_buffer[2] << 16) | (tx_buffer[1] << 8) | tx_buffer[0]) / EnergyGetCalibration(ENERGY_FREQUENCY_CALIBRATION); // 50.0 Hz
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break;
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case BL6523_REG_WATTS :
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Energy->active_power[SINGLE_PHASE] = (float)((tx_buffer[2] << 16) | (tx_buffer[1] << 8) | tx_buffer[0]) / EnergyGetCalibration(ENERGY_POWER_CALIBRATION); // -196.3 W
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break;
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case BL6523_REG_POWF :
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/* Power factor =(sign bit)*((PF[22]×2^－1）＋（PF[21]×2^－2）＋。。。)
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Eg., reg value 0x7FFFFF(HEX) -> PF 1, 0x800000(HEX) -> -1, 0x400000(HEX) -> 0.5
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*/
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powf = 0.0f;
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powf_buf = ((tx_buffer[2] << 16) | (tx_buffer[1] << 8) | tx_buffer[0]);
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powf_word = (powf_buf >> 23) ? ~(powf_buf & 0x7fffff) : powf_buf & 0x7fffff; //Extract the 23 bits and invert if sign bit(24) is set
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for (int i = 0; i < 23; i++){ // Accumulate powf from 23 bits
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powf += ((powf_word >> (22-i)) * pow(2,(0-(i+1))));
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powf_word = powf_word & (0x7fffff >> (1+i));
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}
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powf = (powf_buf >> 23) ? (0.0f - (powf)) : powf; // Negate if sign bit(24) is set
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Energy->power_factor[SINGLE_PHASE] = powf;
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break;
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case BL6523_REG_WATTHR :
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Energy->import_active[SINGLE_PHASE] = (float)((tx_buffer[2] << 16) | (tx_buffer[1] << 8) | tx_buffer[0]) / ( EnergyGetCalibration(ENERGY_POWER_CALIBRATION) - BL6523_PWHRREF_D ); // 6.216 kWh => used in EnergyUpdateTotal()
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break;
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default :
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break;
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}
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Energy->data_valid[SINGLE_PHASE] = 0;
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EnergyUpdateTotal();
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if (!Bl6523.discovery_triggered)
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{
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TasmotaGlobal.discovery_counter = 1; // force TasDiscovery()
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Bl6523.discovery_triggered = true;
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}
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return true;
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}
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/*********************************************************************************************/
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void Bl6523Update(void)
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{ // Every 250 millisecond
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if (Bl6523ReadData())
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{
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Bl6523.valid = 60;
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}
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else
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{
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if (Bl6523.valid) {
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Bl6523.valid--;
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}
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}
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}
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/*********************************************************************************************/
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void Bl6523Init(void)
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{
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Bl6523.type = 0;
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Bl6523RxSerial = new TasmotaSerial(Pin(GPIO_BL6523_RX), -1, 1);
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Bl6523TxSerial = new TasmotaSerial(Pin(GPIO_BL6523_TX), -1, 1);
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if ((Bl6523RxSerial->begin(BL6523_BAUD)) && (Bl6523TxSerial->begin(BL6523_BAUD)))
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{
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if (Bl6523RxSerial->hardwareSerial())
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{
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ClaimSerial();
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}
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if (Bl6523TxSerial->hardwareSerial())
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{
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ClaimSerial();
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}
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Bl6523.type = 1;
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Energy->phase_count = 1;
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AddLog(LOG_LEVEL_DEBUG, PSTR("BL6:Init Success" ));
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}
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else
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{
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AddLog(LOG_LEVEL_DEBUG, PSTR("BL6:Init Failure!" ));
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TasmotaGlobal.energy_driver = ENERGY_NONE;
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}
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}
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bool Bl6523Command(void) {
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bool serviced = true;
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int32_t value = (int32_t)(CharToFloat(XdrvMailbox.data) * 1000); // 1.234 = 1234, -1.234 = -1234
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uint32_t abs_value = abs(value) / 10; // 1.23 = 123, -1.23 = 123
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if ((CMND_POWERCAL == Energy->command_code) || (CMND_VOLTAGECAL == Energy->command_code) || (CMND_CURRENTCAL == Energy->command_code)) {
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// Service in xdrv_03_energy.ino
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}
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else if (CMND_POWERSET == Energy->command_code) {
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if (XdrvMailbox.data_len) {
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if ((abs_value > 100) && (abs_value < 200000)) { // Between 1.00 and 2000.00 W
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XdrvMailbox.payload = abs_value;
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}
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}
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}
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else if (CMND_VOLTAGESET == Energy->command_code) {
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if (XdrvMailbox.data_len) {
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if ((abs_value > 10000) && (abs_value < 26000)) { // Between 100.00 and 260.00 V
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XdrvMailbox.payload = abs_value;
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}
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}
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}
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else if (CMND_CURRENTSET == Energy->command_code) {
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if (XdrvMailbox.data_len) {
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if ((abs_value > 1000) && (abs_value < 1000000)) { // Between 10.00 mA and 10.00000 A
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XdrvMailbox.payload = abs_value;
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}
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}
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}
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else if (CMND_FREQUENCYSET == Energy->command_code) {
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if (XdrvMailbox.data_len) {
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if ((abs_value > 4500) && (abs_value < 6500)) { // Between 45.00 and 65.00 Hz
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XdrvMailbox.payload = abs_value;
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}
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}
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}
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else if (CMND_ENERGYCONFIG == Energy->command_code) {
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AddLog(LOG_LEVEL_DEBUG, PSTR("NRG: Config index %d, payload %d, value %d, data '%s'"),
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XdrvMailbox.index, XdrvMailbox.payload, value, XdrvMailbox.data ? XdrvMailbox.data : "null" );
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// EnergyConfig1 to 3 = Set Energy->current[channel] in A like 0.417 for 417mA
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if ((XdrvMailbox.index > 0) && (XdrvMailbox.index < 4)) {
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//Bl6523.current[XdrvMailbox.index -1] = value;
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}
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// EnergyConfig4 to 6 = Set Energy->active_power[channel] in W like 100 for 100W
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if ((XdrvMailbox.index > 3) && (XdrvMailbox.index < 7)) {
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//Bl6523.power[XdrvMailbox.index -4] = value;
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}
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}
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else serviced = false; // Unknown command
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return serviced;
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}
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void Bl6523DrvInit(void)
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{
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if (PinUsed(GPIO_BL6523_RX) && PinUsed(GPIO_BL6523_TX)) {
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AddLog(LOG_LEVEL_DEBUG, PSTR("BL6:PreInit Success" ));
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TasmotaGlobal.energy_driver = XNRG_22;
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if (HLW_PREF_PULSE == EnergyGetCalibration(ENERGY_POWER_CALIBRATION)) {
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EnergySetCalibration(ENERGY_POWER_CALIBRATION, BL6523_PREF);
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EnergySetCalibration(ENERGY_VOLTAGE_CALIBRATION, BL6523_UREF);
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EnergySetCalibration(ENERGY_CURRENT_CALIBRATION, BL6523_IREF);
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EnergySetCalibration(ENERGY_FREQUENCY_CALIBRATION, BL6523_FREF);
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}
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}
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else
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{
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AddLog(LOG_LEVEL_DEBUG, PSTR("BL6:PreInit Failure!" ));
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TasmotaGlobal.energy_driver = ENERGY_NONE;
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}
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}
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/*********************************************************************************************\
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* Interface
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\*********************************************************************************************/
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bool Xnrg22(uint32_t function)
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{
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bool result = false;
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switch (function)
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{
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case FUNC_EVERY_250_MSECOND:
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Bl6523Update();
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break;
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case FUNC_COMMAND:
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result = Bl6523Command();
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break;
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case FUNC_INIT:
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Bl6523Init();
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break;
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case FUNC_PRE_INIT:
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Bl6523DrvInit();
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break;
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}
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return result;
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}
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#endif // USE_BL6523
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#endif // USE_ENERGY_SENSOR
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