Tasmota/sonoff/xnrg_06_pzem_dc.ino

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/*
xnrg_06_pzem_dc.ino - PZEM-003,017 Modbus DC energy sensor support for Sonoff-Tasmota
Copyright (C) 2019 Theo Arends
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef USE_ENERGY_SENSOR
#ifdef USE_PZEM_DC
/*********************************************************************************************\
* PZEM-003 - DC 300V 10A Energy
* PZEM-017 - DC 300V 50A - 300A Energy
*
* Based on:
* PZEM-003,017 docs Https://pan.baidu.com/s/1V9bDWj3RK2u6_fbBJ3GtqQ password rq37
*
* Hardware Serial will be selected if GPIO1 = [99 PZEM017 Rx] and GPIO3 = [62 PZEM0XX Tx]
\*********************************************************************************************/
#define XNRG_06 6
#define PZEM_DC_DEVICE_ADDRESS 0x01 // PZEM default address
#include <TasmotaModbus.h>
TasmotaModbus *PzemDcModbus;
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void PzemDcEverySecond(void)
{
static uint8_t send_retry = 0;
bool data_ready = PzemDcModbus->ReceiveReady();
if (data_ready) {
uint8_t buffer[22];
uint8_t error = PzemDcModbus->ReceiveBuffer(buffer, 8);
AddLogBuffer(LOG_LEVEL_DEBUG_MORE, buffer, (buffer[2]) ? buffer[2] +5 : sizeof(buffer));
if (error) {
AddLog_P2(LOG_LEVEL_DEBUG, PSTR(D_LOG_DEBUG "PzemDc response error %d"), error);
} else {
Energy.data_valid = 0;
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
// 01 04 10 05 40 00 0A 00 0D 00 00 00 02 00 00 00 00 00 00 D6 29
// Id Cc Sz Volt- Curre Power------ Energy----- HiAlm LoAlm Crc--
Energy.voltage = (float)((buffer[3] << 8) + buffer[4]) / 100.0; // 655.00 V
Energy.current = (float)((buffer[5] << 8) + buffer[6]) / 100.0; // 655.00 A
Energy.active_power = (float)((buffer[9] << 24) + (buffer[10] << 16) + (buffer[7] << 8) + buffer[8]) / 10.0; // 429496729.0 W
float energy = (float)((buffer[13] << 24) + (buffer[14] << 16) + (buffer[11] << 8) + buffer[12]); // 4294967295 Wh
EnergyUpdateTotal(energy, false);
}
}
if (0 == send_retry || data_ready) {
send_retry = 5;
PzemDcModbus->Send(PZEM_DC_DEVICE_ADDRESS, 0x04, 0, 8);
}
else {
send_retry--;
}
}
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void PzemDcSnsInit(void)
{
PzemDcModbus = new TasmotaModbus(pin[GPIO_PZEM017_RX], pin[GPIO_PZEM0XX_TX]);
uint8_t result = PzemDcModbus->Begin(9600, 2); // Uses two stop bits!!
if (result) {
if (2 == result) { ClaimSerial(); }
Energy.type_dc = true;
} else {
energy_flg = ENERGY_NONE;
}
}
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void PzemDcDrvInit(void)
{
if (!energy_flg) {
if ((pin[GPIO_PZEM017_RX] < 99) && (pin[GPIO_PZEM0XX_TX] < 99)) {
energy_flg = XNRG_06;
}
}
}
/*********************************************************************************************\
* Interface
\*********************************************************************************************/
int Xnrg06(uint8_t function)
{
int result = 0;
if (FUNC_PRE_INIT == function) {
PzemDcDrvInit();
}
else if (XNRG_06 == energy_flg) {
switch (function) {
case FUNC_INIT:
PzemDcSnsInit();
break;
case FUNC_ENERGY_EVERY_SECOND:
if (uptime > 4) { PzemDcEverySecond(); } // Fix start up issue #5875
break;
}
}
return result;
}
#endif // USE_PZEM_DC
#endif // USE_ENERGY_SENSOR