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2f78308de0
it would allow to empty RX buffer when necessary Signed-off-by: Igor Mammedov <imammedo@redhat.com>
127 lines
3.1 KiB
C++
127 lines
3.1 KiB
C++
#pragma once
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#include <HardwareSerial.h>
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#include "esphome/core/esphal.h"
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#include "esphome/core/component.h"
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namespace esphome {
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namespace uart {
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#ifdef ARDUINO_ARCH_ESP8266
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class ESP8266SoftwareSerial {
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public:
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void setup(int8_t tx_pin, int8_t rx_pin, uint32_t baud_rate);
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uint8_t read_byte();
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uint8_t peek_byte();
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void flush();
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void drain();
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void write_byte(uint8_t data);
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int available();
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protected:
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static void gpio_intr(ESP8266SoftwareSerial *arg);
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inline void wait_(uint32_t *wait, const uint32_t &start);
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inline bool read_bit_(uint32_t *wait, const uint32_t &start);
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inline void write_bit_(bool bit, uint32_t *wait, const uint32_t &start);
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uint32_t bit_time_{0};
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uint8_t *rx_buffer_{nullptr};
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size_t rx_buffer_size_{64};
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volatile size_t rx_in_pos_{0};
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size_t rx_out_pos_{0};
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ISRInternalGPIOPin *tx_pin_{nullptr};
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ISRInternalGPIOPin *rx_pin_{nullptr};
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};
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#endif
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class UARTComponent : public Component, public Stream {
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public:
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void set_baud_rate(uint32_t baud_rate) { baud_rate_ = baud_rate; }
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void setup() override;
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void dump_config() override;
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void write_byte(uint8_t data);
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void write_array(const uint8_t *data, size_t len);
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void write_str(const char *str);
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bool peek_byte(uint8_t *data);
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bool read_byte(uint8_t *data);
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bool read_array(uint8_t *data, size_t len);
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int available() override;
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void flush() override;
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void drain();
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float get_setup_priority() const override { return setup_priority::BUS; }
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size_t write(uint8_t data) override;
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int read() override;
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int peek() override;
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void set_tx_pin(uint8_t tx_pin) { this->tx_pin_ = tx_pin; }
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void set_rx_pin(uint8_t rx_pin) { this->rx_pin_ = rx_pin; }
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protected:
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bool check_read_timeout_(size_t len = 1);
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HardwareSerial *hw_serial_{nullptr};
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#ifdef ARDUINO_ARCH_ESP8266
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ESP8266SoftwareSerial *sw_serial_{nullptr};
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#endif
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optional<uint8_t> tx_pin_;
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optional<uint8_t> rx_pin_;
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uint32_t baud_rate_;
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};
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#ifdef ARDUINO_ARCH_ESP32
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extern uint8_t next_uart_num;
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#endif
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class UARTDevice : public Stream {
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public:
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UARTDevice() = default;
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UARTDevice(UARTComponent *parent) : parent_(parent) {}
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void set_uart_parent(UARTComponent *parent) { this->parent_ = parent; }
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void write_byte(uint8_t data) { this->parent_->write_byte(data); }
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void write_array(const uint8_t *data, size_t len) { this->parent_->write_array(data, len); }
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void write_str(const char *str) { this->parent_->write_str(str); }
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bool read_byte(uint8_t *data) { return this->parent_->read_byte(data); }
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bool peek_byte(uint8_t *data) { return this->parent_->peek_byte(data); }
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bool read_array(uint8_t *data, size_t len) { return this->parent_->read_array(data, len); }
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int available() override { return this->parent_->available(); }
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void flush() override { return this->parent_->flush(); }
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void drain() { return this->parent_->drain(); }
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size_t write(uint8_t data) override { return this->parent_->write(data); }
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int read() override { return this->parent_->read(); }
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int peek() override { return this->parent_->peek(); }
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protected:
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UARTComponent *parent_{nullptr};
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};
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} // namespace uart
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} // namespace esphome
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