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Make growatt play nicer with other modbus components. (#4947)

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Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
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Onne 2023-06-21 02:22:32 +02:00 committed by Jesse Hills
parent 867b4719d1
commit 0671287b80
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2 changed files with 35 additions and 0 deletions
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31
esphome/components/growatt_solar/growatt_solar.cpp
View file

@ -9,11 +9,42 @@ static const char *const TAG = "growatt_solar";
static const uint8_t MODBUS_CMD_READ_IN_REGISTERS = 0x04;
static const uint8_t MODBUS_REGISTER_COUNT[] = {33, 95}; // indexed with enum GrowattProtocolVersion
void GrowattSolar::loop() {
// If update() was unable to send we retry until we can send.
if (!this->waiting_to_update_)
return;
update();
}
void GrowattSolar::update() {
// If our last send has had no reply yet, and it wasn't that long ago, do nothing.
uint32_t now = millis();
if (now - this->last_send_ < this->get_update_interval() / 2) {
return;
}
// The bus might be slow, or there might be other devices, or other components might be talking to our device.
if (this->waiting_for_response()) {
this->waiting_to_update_ = true;
return;
}
this->waiting_to_update_ = false;
this->send(MODBUS_CMD_READ_IN_REGISTERS, 0, MODBUS_REGISTER_COUNT[this->protocol_version_]);
this->last_send_ = millis();
}
void GrowattSolar::on_modbus_data(const std::vector<uint8_t> &data) {
// Other components might be sending commands to our device. But we don't get called with enough
// context to know what is what. So if we didn't do a send, we ignore the data.
if (!this->last_send_)
return;
this->last_send_ = 0;
// Also ignore the data if the message is too short. Otherwise we will publish invalid values.
if (data.size() < MODBUS_REGISTER_COUNT[this->protocol_version_] * 2)
return;
auto publish_1_reg_sensor_state = [&](sensor::Sensor *sensor, size_t i, float unit) -> void {
if (sensor == nullptr)
return;

4
esphome/components/growatt_solar/growatt_solar.h
View file

@ -19,6 +19,7 @@ enum GrowattProtocolVersion {
class GrowattSolar : public PollingComponent, public modbus::ModbusDevice {
public:
void loop() override;
void update() override;
void on_modbus_data(const std::vector<uint8_t> &data) override;
void dump_config() override;
@ -55,6 +56,9 @@ class GrowattSolar : public PollingComponent, public modbus::ModbusDevice {
}
protected:
bool waiting_to_update_;
uint32_t last_send_;
struct GrowattPhase {
sensor::Sensor *voltage_sensor_{nullptr};
sensor::Sensor *current_sensor_{nullptr};