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https://github.com/esphome/esphome.git
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59 lines
2.1 KiB
C++
59 lines
2.1 KiB
C++
#include "pzemdc.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace pzemdc {
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static const char *const TAG = "pzemdc";
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static const uint8_t PZEM_CMD_READ_IN_REGISTERS = 0x04;
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static const uint8_t PZEM_REGISTER_COUNT = 10; // 10x 16-bit registers
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void PZEMDC::on_modbus_data(const std::vector<uint8_t> &data) {
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if (data.size() < 16) {
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ESP_LOGW(TAG, "Invalid size for PZEM DC!");
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return;
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}
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// See https://github.com/esphome/feature-requests/issues/49#issuecomment-538636809
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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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auto pzem_get_16bit = [&](size_t i) -> uint16_t {
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return (uint16_t(data[i + 0]) << 8) | (uint16_t(data[i + 1]) << 0);
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};
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auto pzem_get_32bit = [&](size_t i) -> uint32_t {
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return (uint32_t(pzem_get_16bit(i + 2)) << 16) | (uint32_t(pzem_get_16bit(i + 0)) << 0);
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};
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uint16_t raw_voltage = pzem_get_16bit(0);
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float voltage = raw_voltage / 100.0f; // max 655.35 V
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uint16_t raw_current = pzem_get_16bit(2);
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float current = raw_current / 100.0f; // max 655.35 A
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uint32_t raw_power = pzem_get_32bit(4);
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float power = raw_power / 10.0f; // max 429496729.5 W
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ESP_LOGD(TAG, "PZEM DC: V=%.1f V, I=%.3f A, P=%.1f W", voltage, current, power);
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if (this->voltage_sensor_ != nullptr)
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this->voltage_sensor_->publish_state(voltage);
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if (this->current_sensor_ != nullptr)
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this->current_sensor_->publish_state(current);
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if (this->power_sensor_ != nullptr)
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this->power_sensor_->publish_state(power);
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}
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void PZEMDC::update() { this->send(PZEM_CMD_READ_IN_REGISTERS, 0, 8); }
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void PZEMDC::dump_config() {
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ESP_LOGCONFIG(TAG, "PZEMDC:");
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ESP_LOGCONFIG(TAG, " Address: 0x%02X", this->address_);
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LOG_SENSOR("", "Voltage", this->voltage_sensor_);
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LOG_SENSOR("", "Current", this->current_sensor_);
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LOG_SENSOR("", "Power", this->power_sensor_);
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}
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} // namespace pzemdc
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} // namespace esphome
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