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60 lines
1.4 KiB
C++
60 lines
1.4 KiB
C++
#pragma once
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#include "esphome/core/component.h"
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#include "esphome/components/uart/uart.h"
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namespace esphome {
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namespace modbus {
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class ModbusDevice;
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class Modbus : public uart::UARTDevice, public Component {
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public:
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Modbus() = default;
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void setup() override;
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void loop() override;
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void dump_config() override;
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void register_device(ModbusDevice *device) { this->devices_.push_back(device); }
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float get_setup_priority() const override;
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void send(uint8_t address, uint8_t function, uint16_t start_address, uint16_t register_count);
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void set_flow_control_pin(GPIOPin *flow_control_pin) { this->flow_control_pin_ = flow_control_pin; }
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protected:
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GPIOPin *flow_control_pin_{nullptr};
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bool parse_modbus_byte_(uint8_t byte);
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std::vector<uint8_t> rx_buffer_;
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uint32_t last_modbus_byte_{0};
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std::vector<ModbusDevice *> devices_;
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};
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uint16_t crc16(const uint8_t *data, uint8_t len);
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class ModbusDevice {
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public:
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void set_parent(Modbus *parent) { parent_ = parent; }
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void set_address(uint8_t address) { address_ = address; }
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virtual void on_modbus_data(const std::vector<uint8_t> &data) = 0;
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void send(uint8_t function, uint16_t start_address, uint16_t register_count) {
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this->parent_->send(this->address_, function, start_address, register_count);
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}
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protected:
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friend Modbus;
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Modbus *parent_;
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uint8_t address_;
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};
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} // namespace modbus
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} // namespace esphome
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