mirror of https://github.com/arendst/Tasmota.git
208 lines
7.2 KiB
C++
208 lines
7.2 KiB
C++
/*
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xnrg_06_pzem_dc.ino - PZEM-003,017 Modbus DC 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_DC
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/*********************************************************************************************\
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* PZEM-003 - DC 300V 10A Energy
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* PZEM-017 - DC 300V 50A - 300A Energy
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*
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* Based on:
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* PZEM-003,017 docs Https://pan.baidu.com/s/1V9bDWj3RK2u6_fbBJ3GtqQ password rq37
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*
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* Hardware Serial will be selected if GPIO1 = [62 PZEM0XX Tx] and GPIO3 = [99 PZEM017 Rx]
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\*********************************************************************************************/
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#define XNRG_06 6
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const uint8_t PZEM_DC_DEVICE_ADDRESS = 0x01; // PZEM default address
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const uint32_t PZEM_DC_STABILIZE = 10; // Number of seconds to stabilize 1 pzem
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#include <TasmotaModbus.h>
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struct PZEMDC_Data {
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TasmotaModbus *modbus;
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float energy;
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float last_energy;
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uint8_t send_retry;
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uint8_t channel;
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uint8_t address;
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uint8_t range;
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uint8_t address_step;
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} *PzemDc = nullptr; // Will be dynamically allocated in PzemDcDrvInit() if GPIO in use
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const char PZEMDC_Commands[] PROGMEM = "range";
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enum PZEMDC_COMMANDS { // commands for Console
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CMND_PZEMDC_RANGE=0 // Set current range register
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};
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void PzemDcEverySecond(void)
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{
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bool data_ready = PzemDc->modbus->ReceiveReady();
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if (data_ready) {
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uint8_t buffer[26]; // At least 5 + (2 * 8) = 21
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uint8_t registers = 8;
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if (ADDR_RECEIVE == PzemDc->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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PzemDc->address_step--;
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}
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uint8_t error = PzemDc->modbus->ReceiveBuffer(buffer, registers);
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AddLogBuffer(LOG_LEVEL_DEBUG_MORE, buffer, PzemDc->modbus->ReceiveCount());
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if (error) {
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AddLog(LOG_LEVEL_DEBUG, PSTR("PDC: PzemDc %d error %d"), PZEM_DC_DEVICE_ADDRESS + PzemDc->channel, error);
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} else {
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Energy->data_valid[PzemDc->channel] = 0;
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if (8 == registers) {
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// 0 1 2 3 4 5 6 7 = 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 = Buffer index
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// 01 04 10 05 40 00 0A 00 0D 00 00 00 02 00 00 00 00 00 00 D6 29
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// Id Cc Sz Volt- Curre Power------ Energy----- HiAlm LoAlm Crc--
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Energy->voltage[PzemDc->channel] = (float)((buffer[3] << 8) + buffer[4]) / 100.0f; // 655.00 V
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Energy->current[PzemDc->channel] = (float)((buffer[5] << 8) + buffer[6]) / 100.0f; // 655.00 A
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Energy->active_power[PzemDc->channel] = (float)((buffer[9] << 24) + (buffer[10] << 16) + (buffer[7] << 8) + buffer[8]) / 10.0f; // 429496729.0 W
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Energy->import_active[PzemDc->channel] = (float)((buffer[13] << 24) + (buffer[14] << 16) + (buffer[11] << 8) + buffer[12]) / 1000.0f; // 4294967.295 kWh
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if (PzemDc->channel == Energy->phase_count -1) {
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if (TasmotaGlobal.uptime > (PZEM_DC_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 == PzemDc->send_retry || data_ready) {
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if (0 == PzemDc->channel) {
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PzemDc->channel = Energy->phase_count -1;
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} else {
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PzemDc->channel--;
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}
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PzemDc->send_retry = ENERGY_WATCHDOG;
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if (PzemDc->address) {
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uint16_t addr = PzemDc->address;
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PzemDc->modbus->Send(0xF8, 0x06, 0x0002, 1, &addr);
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PzemDc->address = 0;
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PzemDc->address_step = ADDR_RECEIVE;
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} else if (PzemDc->range) {
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uint16_t range = PzemDc->range>>1;
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PzemDc->modbus->Send(0xF8, 0x06, 0x0003, 1, &range);
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PzemDc->range = 0;
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PzemDc->address_step = ADDR_RECEIVE;
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} else {
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PzemDc->modbus->Send(PZEM_DC_DEVICE_ADDRESS + PzemDc->channel, 0x04, 0, 8);
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}
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}
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else {
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PzemDc->send_retry--;
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if ((Energy->phase_count > 1) && (0 == PzemDc->send_retry) && (TasmotaGlobal.uptime < (PZEM_DC_STABILIZE * ENERGY_MAX_PHASES))) {
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Energy->phase_count--; // Decrement channels 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 PzemDcSnsInit(void)
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{
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PzemDc->modbus = new TasmotaModbus(Pin(GPIO_PZEM017_RX), Pin(GPIO_PZEM0XX_TX), Pin(GPIO_NRG_MBS_TX_ENA));
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uint8_t result = PzemDc->modbus->Begin(9600, SERIAL_8N2);
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if (result) {
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if (2 == result) { ClaimSerial(); }
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Energy->type_dc = true;
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Energy->phase_count = ENERGY_MAX_PHASES; // Start off with three channels
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PzemDc->channel = 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 PzemDcDrvInit(void)
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{
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if (PinUsed(GPIO_PZEM017_RX) && PinUsed(GPIO_PZEM0XX_TX)) {
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PzemDc = (struct PZEMDC_Data *)calloc(1, sizeof(struct PZEMDC_Data));
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if (!PzemDc) {
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AddLog(LOG_LEVEL_ERROR, PSTR("PDC: Memory allocation failed"));
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return;
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}
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TasmotaGlobal.energy_driver = XNRG_06;
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}
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}
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bool PzemDcCommand(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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PzemDc->address = XdrvMailbox.payload; // Valid addresses are 1, 2 and 3
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}
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else if (CMND_ENERGYCONFIG == Energy->command_code && XdrvMailbox.data_len > 0)
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{
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char *keyword, *savekeyword, *value, *savevalue, *str = XdrvMailbox.data;
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for(;;str=NULL) {
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keyword = strtok_r(str, " ,", &savekeyword);
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if (!keyword) break;
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value = strtok_r(keyword, "=", &savevalue);
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value = strtok_r(NULL, "=", &savevalue);
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if (!value) break;
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char command[CMDSZ];
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int command_code = GetCommandCode(command, sizeof(command), keyword, PZEMDC_Commands);
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switch (command_code) {
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case CMND_PZEMDC_RANGE:
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PzemDc->range = atoi(value)/50;
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break;
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}
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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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/*********************************************************************************************\
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* Interface
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\*********************************************************************************************/
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bool Xnrg06(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) { PzemDcEverySecond(); } // Fix start up issue #5875
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break;
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case FUNC_COMMAND:
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result = PzemDcCommand();
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break;
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case FUNC_INIT:
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PzemDcSnsInit();
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break;
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case FUNC_PRE_INIT:
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PzemDcDrvInit();
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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_DC
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#endif // USE_ENERGY_SENSOR
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