mirror of https://github.com/arendst/Tasmota.git
175 lines
6.2 KiB
C++
175 lines
6.2 KiB
C++
/*
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xnrg_05_pzem_ac.ino - PZEM-014,016 Modbus AC energy sensor support for Tasmota
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Copyright (C) 2021 Theo Arends
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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_PZEM_AC
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/*********************************************************************************************\
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* PZEM-004T V3 - AC 220V 10/100A Energy
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* PZEM-014 - AC 220V 10A Energy
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* PZEM-016 - AC 220V 100A Energy
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*
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* Based on:
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* PZEM-014,016 docs https://pan.baidu.com/s/1B0MdMgURyjtO1oQa2lavKw password ytkv
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*
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* Hardware Serial will be selected if GPIO1 = [62 PZEM0XX Tx] and GPIO3 = [98 PZEM016 Rx]
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\*********************************************************************************************/
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#define XNRG_05 5
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const uint8_t PZEM_AC_DEVICE_ADDRESS = 0x01; // PZEM default address
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const uint32_t PZEM_AC_STABILIZE = 10; // Number of seconds to stabilize 1 pzem
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#include <TasmotaModbus.h>
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TasmotaModbus *PzemAcModbus;
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struct PZEMAC {
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float energy = 0;
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float last_energy = 0;
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uint8_t send_retry = 0;
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uint8_t phase = 0;
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uint8_t address = 0;
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uint8_t address_step = ADDR_IDLE;
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} PzemAc;
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void PzemAcEverySecond(void)
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{
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bool data_ready = PzemAcModbus->ReceiveReady();
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if (data_ready) {
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uint8_t buffer[30]; // At least 5 + (2 * 10) = 25
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uint8_t registers = 10;
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if (ADDR_RECEIVE == PzemAc.address_step) {
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registers = 2; // Need 1 byte extra as response is F8 06 00 02 00 01 FD A3
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PzemAc.address_step--;
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}
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uint8_t error = PzemAcModbus->ReceiveBuffer(buffer, registers);
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AddLogBuffer(LOG_LEVEL_DEBUG_MORE, buffer, PzemAcModbus->ReceiveCount());
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if (error) {
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AddLog(LOG_LEVEL_DEBUG, PSTR("PAC: PzemAc %d error %d"), PZEM_AC_DEVICE_ADDRESS + PzemAc.phase, error);
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} else {
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Energy->data_valid[PzemAc.phase] = 0;
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if (10 == registers) {
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// 0 1 2 3 4 5 6 7 8 9 = ModBus register
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// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 = Buffer index
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// 01 04 14 08 D1 00 6C 00 00 00 F4 00 00 00 26 00 00 01 F4 00 64 00 00 51 34
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// Id Cc Sz Volt- Current---- Power------ Energy----- Frequ PFact Alarm Crc--
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Energy->voltage[PzemAc.phase] = (float)((buffer[3] << 8) + buffer[4]) / 10.0f; // 6553.0 V
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Energy->current[PzemAc.phase] = (float)((buffer[7] << 24) + (buffer[8] << 16) + (buffer[5] << 8) + buffer[6]) / 1000.0f; // 4294967.000 A
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Energy->active_power[PzemAc.phase] = (float)((buffer[11] << 24) + (buffer[12] << 16) + (buffer[9] << 8) + buffer[10]) / 10.0f; // 429496729.0 W
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Energy->frequency[PzemAc.phase] = (float)((buffer[17] << 8) + buffer[18]) / 10.0f; // 50.0 Hz
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Energy->power_factor[PzemAc.phase] = (float)((buffer[19] << 8) + buffer[20]) / 100.0f; // 1.00
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Energy->import_active[PzemAc.phase] = (float)((buffer[15] << 24) + (buffer[16] << 16) + (buffer[13] << 8) + buffer[14]) / 1000.0f; // 4294967.295 kWh
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if (PzemAc.phase == Energy->phase_count -1) {
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if (TasmotaGlobal.uptime > (PZEM_AC_STABILIZE * ENERGY_MAX_PHASES)) {
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EnergyUpdateTotal();
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}
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}
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}
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}
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}
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if (0 == PzemAc.send_retry || data_ready) {
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if (0 == PzemAc.phase) {
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PzemAc.phase = Energy->phase_count -1;
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} else {
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PzemAc.phase--;
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}
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PzemAc.send_retry = ENERGY_WATCHDOG;
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if (ADDR_SEND == PzemAc.address_step) {
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PzemAcModbus->Send(0xF8, 0x06, 0x0002, (uint16_t)PzemAc.address);
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PzemAc.address_step--;
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} else {
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PzemAcModbus->Send(PZEM_AC_DEVICE_ADDRESS + PzemAc.phase, 0x04, 0, 10);
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}
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}
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else {
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PzemAc.send_retry--;
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if ((Energy->phase_count > 1) && (0 == PzemAc.send_retry) && (TasmotaGlobal.uptime < (PZEM_AC_STABILIZE * ENERGY_MAX_PHASES))) {
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Energy->phase_count--; // Decrement phases if no response after retry within 30 seconds after restart
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if (TasmotaGlobal.discovery_counter) {
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TasmotaGlobal.discovery_counter += ENERGY_WATCHDOG + 1; // Don't send Discovery yet, delay by 4s + 1s
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}
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}
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}
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}
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void PzemAcSnsInit(void)
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{
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PzemAcModbus = new TasmotaModbus(Pin(GPIO_PZEM016_RX), Pin(GPIO_PZEM0XX_TX), Pin(GPIO_NRG_MBS_TX_ENA));
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uint8_t result = PzemAcModbus->Begin(9600);
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if (result) {
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if (2 == result) { ClaimSerial(); }
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Energy->phase_count = ENERGY_MAX_PHASES; // Start off with three phases
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PzemAc.phase = 0;
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} else {
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TasmotaGlobal.energy_driver = ENERGY_NONE;
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}
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}
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void PzemAcDrvInit(void)
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{
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if (PinUsed(GPIO_PZEM016_RX) && PinUsed(GPIO_PZEM0XX_TX)) {
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TasmotaGlobal.energy_driver = XNRG_05;
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}
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}
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bool PzemAcCommand(void)
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{
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bool serviced = true;
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if (CMND_MODULEADDRESS == Energy->command_code) {
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PzemAc.address = XdrvMailbox.payload; // Valid addresses are 1, 2 and 3
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PzemAc.address_step = ADDR_SEND;
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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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/*********************************************************************************************\
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* Interface
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\*********************************************************************************************/
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bool Xnrg05(uint32_t function)
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{
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bool result = false;
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switch (function) {
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case FUNC_ENERGY_EVERY_SECOND:
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if (TasmotaGlobal.uptime > 4) { PzemAcEverySecond(); } // Fix start up issue #5875
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break;
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case FUNC_COMMAND:
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result = PzemAcCommand();
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break;
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case FUNC_INIT:
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PzemAcSnsInit();
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break;
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case FUNC_PRE_INIT:
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PzemAcDrvInit();
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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_PZEM_AC
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#endif // USE_ENERGY_SENSOR
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