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Code Issues Releases Wiki Activity

Add support for acting as Modbus server (#4874)

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Co-authored-by: Jeroen van Oort <jeroen.vanoort@webparking.nl>
Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
This commit is contained in:
Jeroen van Oort
2024-05-22 06:17:32 +02:00
committed by GitHub
parent 76abf2200c
commit 1ca7c2d7dd
7 changed files with 203 additions and 21 deletions
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22
esphome/components/modbus_controller/modbus_controller.h
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@@ -8,6 +8,7 @@
#include <list>
#include <queue>
#include <set>
#include <utility>
#include <vector>
namespace esphome {
@@ -251,6 +252,21 @@ class SensorItem {
bool force_new_range{false};
};
class ServerRegister {
public:
ServerRegister(uint16_t address, SensorValueType value_type, uint8_t register_count,
std::function<float()> read_lambda) {
this->address = address;
this->value_type = value_type;
this->register_count = register_count;
this->read_lambda = std::move(read_lambda);
}
uint16_t address;
SensorValueType value_type;
uint8_t register_count;
std::function<float()> read_lambda;
};
// ModbusController::create_register_ranges_ tries to optimize register range
// for this the sensors must be ordered by register_type, start_address and bitmask
class SensorItemsComparator {
@@ -418,10 +434,14 @@ class ModbusController : public PollingComponent, public modbus::ModbusDevice {
void queue_command(const ModbusCommandItem &command);
/// Registers a sensor with the controller. Called by esphomes code generator
void add_sensor_item(SensorItem *item) { sensorset_.insert(item); }
/// Registers a server register with the controller. Called by esphomes code generator
void add_server_register(ServerRegister *server_register) { server_registers_.push_back(server_register); }
/// called when a modbus response was parsed without errors
void on_modbus_data(const std::vector<uint8_t> &data) override;
/// called when a modbus error response was received
void on_modbus_error(uint8_t function_code, uint8_t exception_code) override;
/// called when a modbus request (function code 3 or 4) was parsed without errors
void on_modbus_read_registers(uint8_t function_code, uint16_t start_address, uint16_t number_of_registers) final;
/// default delegate called by process_modbus_data when a response has retrieved from the incoming queue
void on_register_data(ModbusRegisterType register_type, uint16_t start_address, const std::vector<uint8_t> &data);
/// default delegate called by process_modbus_data when a response for a write response has retrieved from the
@@ -452,6 +472,8 @@ class ModbusController : public PollingComponent, public modbus::ModbusDevice {
void dump_sensors_();
/// Collection of all sensors for this component
SensorSet sensorset_;
/// Collection of all server registers for this component
std::vector<ServerRegister *> server_registers_;
/// Continuous range of modbus registers
std::vector<RegisterRange> register_ranges_;
/// Hold the pending requests to be sent