ESPHome 2026.8.0-dev
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esphome::usb_uart::USBUartComponent Class Referenceabstract

#include <usb_uart.h>

Inheritance diagram for esphome::usb_uart::USBUartComponent:
esphome::usb_host::USBClient esphome::Component esphome::usb_uart::USBUartTypeCdcAcm esphome::usb_uart::USBUartTypeCH34X esphome::usb_uart::USBUartTypeCP210X esphome::usb_uart::USBUartTypeFT23XX esphome::usb_uart::USBUartTypePL2303

Public Member Functions

 USBUartComponent (uint16_t vid, uint16_t pid)
 
void setup () override
 
void loop () override
 
void dump_config () override
 
std::vector< USBUartChannel * > get_channels ()
 
void add_channel (USBUartChannel *channel)
 
virtual void start_input (USBUartChannel *channel)
 
void start_output (USBUartChannel *channel)
 
void enable_channels ()
 
void apply_channel_settings (USBUartChannel *channel)
 
virtual void on_rx_overflow (USBUartChannel *channel)
 
- Public Member Functions inherited from esphome::usb_host::USBClient
 USBClient (uint16_t vid, uint16_t pid)
 
float get_setup_priority () const override
 
void on_opened (uint8_t addr)
 
void on_removed (usb_device_handle_t handle)
 
bool transfer_in (uint8_t ep_address, const transfer_cb_t &callback, uint16_t length)
 Performs a transfer input operation.
 
bool transfer_out (uint8_t ep_address, const transfer_cb_t &callback, const uint8_t *data, uint16_t length)
 Performs an output transfer operation.
 
void release_trq (TransferRequest *trq)
 
trq_bitmask_t get_trq_in_use () const
 
bool control_transfer (uint8_t type, uint8_t request, uint16_t value, uint16_t index, const transfer_cb_t &callback, const std::vector< uint8_t > &data={})
 
- Public Member Functions inherited from esphome::Component
float get_actual_setup_priority () const
 
void set_setup_priority (float priority)
 
void call ()
 
virtual void on_shutdown ()
 
virtual void on_safe_shutdown ()
 
virtual bool teardown ()
 Called during teardown to allow component to gracefully finish operations.
 
virtual void on_powerdown ()
 Called after teardown is complete to power down hardware.
 
uint8_t get_component_state () const
 
void reset_to_construction_state ()
 Reset this component back to the construction state to allow setup to run again.
 
bool is_in_loop_state () const
 Check if this component has completed setup and is in the loop state.
 
bool is_idle () const
 Check if this component is idle.
 
void mark_failed ()
 Mark this component as failed.
 
void mark_failed (const LogString *message)
 
void disable_loop ()
 Disable this component's loop.
 
void enable_loop ()
 Enable this component's loop.
 
void enable_loop_soon_any_context ()
 Thread and ISR-safe version of enable_loop() that can be called from any context.
 
bool is_failed () const
 
bool is_ready () const
 
virtual bool can_proceed ()
 
bool status_has_warning () const
 
bool status_has_error () const
 
void status_set_warning ()
 
void status_set_warning (const char *message)
 
void status_set_warning (const LogString *message)
 
void status_set_error ()
 
void status_set_error (const LogString *message)
 
void status_clear_warning ()
 
void status_clear_error ()
 
void status_momentary_warning (const char *name, uint32_t length=5000)
 Set warning status flag and automatically clear it after a timeout.
 
void status_momentary_error (const char *name, uint32_t length=5000)
 Set error status flag and automatically clear it after a timeout.
 
bool has_overridden_loop () const
 
const LogString * get_component_log_str () const ESPHOME_ALWAYS_INLINE
 Get the integration where this component was declared as a LogString for logging.
 
bool should_warn_of_blocking (uint32_t blocking_time, uint32_t &threshold_ms_out)
 

Data Fields

LockFreeQueue< UsbDataChunk, USB_DATA_QUEUE_SIZEusb_data_queue_
 
EventPool< UsbDataChunk, USB_DATA_QUEUE_SIZE - 1 > chunk_pool_
 
- Data Fields inherited from esphome::usb_host::USBClient
LockFreeQueue< UsbEvent, USB_EVENT_QUEUE_SIZE > event_queue
 
EventPool< UsbEvent, USB_EVENT_QUEUE_SIZE - 1 > event_pool
 

Static Public Attributes

static constexpr int USB_DATA_QUEUE_SIZE = 32
 

Protected Member Functions

void config_transfer_ (uint8_t type, uint8_t request, uint16_t value, uint16_t index, const std::vector< uint8_t > &data={})
 
void start_config_ (bool reload)
 
bool run_config_machine_ ()
 
virtual bool config_step (USBUartChannel *channel, uint8_t step, bool reload, bool ok, const uint8_t *response)=0
 
virtual bool config_device_step (uint8_t step, bool ok, const uint8_t *response)
 
- Protected Member Functions inherited from esphome::usb_host::USBClient
bool process_usb_events_ ()
 
void handle_open_state_ ()
 
TransferRequestget_trq_ ()
 
virtual void disconnect ()
 
virtual void on_connected ()
 
virtual void on_disconnected ()
 
void usb_task_loop_ () const
 
- Protected Member Functions inherited from esphome::Component
friend void::setup ()
 
friend void::original_setup ()
 
void set_component_source_ (uint8_t index)
 Set where this component was loaded from for some debug messages.
 
virtual void call_setup ()
 
void call_dump_config_ ()
 
void enable_loop_slow_path_ ()
 
void set_component_state_ (uint8_t state)
 Helper to set component state (clears state bits and sets new state)
 
bool set_status_flag_ (uint8_t flag)
 Helper to set a status LED flag on both this component and the app.
 
void set_interval (const char *name, uint32_t interval, std::function< void()> &&f)
 Set an interval function with a const char* name.
 
void set_interval (uint32_t id, uint32_t interval, std::function< void()> &&f)
 Set an interval function with a numeric ID (zero heap allocation).
 
void set_interval (InternalSchedulerID id, uint32_t interval, std::function< void()> &&f)
 
void set_interval (uint32_t interval, std::function< void()> &&f)
 
bool cancel_interval (const char *name)
 Cancel an interval function.
 
bool cancel_interval (uint32_t id)
 
bool cancel_interval (InternalSchedulerID id)
 
void set_timeout (const char *name, uint32_t timeout, std::function< void()> &&f)
 Set a timeout function with a const char* name.
 
void set_timeout (uint32_t id, uint32_t timeout, std::function< void()> &&f)
 Set a timeout function with a numeric ID (zero heap allocation).
 
void set_timeout (InternalSchedulerID id, uint32_t timeout, std::function< void()> &&f)
 
void set_timeout (uint32_t timeout, std::function< void()> &&f)
 
bool cancel_timeout (const char *name)
 Cancel a timeout function.
 
bool cancel_timeout (uint32_t id)
 
bool cancel_timeout (InternalSchedulerID id)
 
void defer (const char *name, std::function< void()> &&f)
 Defer a callback to the next loop() call with a const char* name.
 
void defer (std::function< void()> &&f)
 Defer a callback to the next loop() call.
 
void defer (uint32_t id, std::function< void()> &&f)
 Defer a callback with a numeric ID (zero heap allocation)
 
bool cancel_defer (const char *name)
 Cancel a defer callback using the specified name, name must not be empty.
 
bool cancel_defer (uint32_t id)
 
void status_clear_warning_slow_path_ ()
 
void status_clear_error_slow_path_ ()
 

Protected Attributes

std::vector< USBUartChannel * > channels_ {}
 
USBUartChannelcfg_single_ {nullptr}
 
USBUartChannelcfg_pending_reload_ {nullptr}
 
std::atomic< bool > cfg_done_ {false}
 
uint8_t cfg_response_ [8] {}
 
uint8_t cfg_channel_idx_ {0}
 
uint8_t cfg_step_ {0}
 
bool cfg_active_ {false}
 
bool cfg_reload_ {false}
 
bool cfg_device_phase_ {false}
 
bool cfg_in_flight_ {false}
 
bool cfg_ok_ {true}
 
- Protected Attributes inherited from esphome::usb_host::USBClient
TransferRequest requests_ [MAX_REQUESTS] {}
 
TaskHandle_t usb_task_handle_ {nullptr}
 
usb_host_client_handle_t handle_ {}
 
usb_device_handle_t device_handle_ {}
 
int device_addr_ {-1}
 
int state_ {USB_CLIENT_INIT}
 
std::atomic< trq_bitmask_ttrq_in_use_
 
uint16_t vid_ {}
 
uint16_t pid_ {}
 
- Protected Attributes inherited from esphome::Component
uint8_t component_source_index_ {0}
 Index into component source PROGMEM lookup table (0 = not set)
 
uint8_t warn_if_blocking_over_ {WARN_IF_BLOCKING_OVER_CS}
 Warn threshold in centiseconds (max 2550ms)
 
uint8_t component_state_ {0x00}
 State of this component - each bit has a purpose: Bits 0-2: Component state (0x00=CONSTRUCTION, 0x01=SETUP, 0x02=LOOP, 0x03=FAILED, 0x04=LOOP_DONE) Bit 3: STATUS_LED_WARNING Bit 4: STATUS_LED_ERROR Bit 5: Has overridden loop() (set at registration time) Bits 6-7: Unused - reserved for future expansion.
 
volatile bool pending_enable_loop_ {false}
 ISR-safe flag for enable_loop_soon_any_context.
 
ComponentRuntimeStats runtime_stats_
 

Additional Inherited Members

- Static Protected Member Functions inherited from esphome::usb_host::USBClient
static void usb_task_fn (void *arg)
 

Detailed Description

Definition at line 188 of file usb_uart.h.

Constructor & Destructor Documentation

◆ USBUartComponent()

esphome::usb_uart::USBUartComponent::USBUartComponent ( uint16_t vid,
uint16_t pid )
inline

Definition at line 190 of file usb_uart.h.

Member Function Documentation

◆ add_channel()

void esphome::usb_uart::USBUartComponent::add_channel ( USBUartChannel * channel)
inline

Definition at line 196 of file usb_uart.h.

◆ apply_channel_settings()

void esphome::usb_uart::USBUartComponent::apply_channel_settings ( USBUartChannel * channel)

Definition at line 540 of file usb_uart.cpp.

◆ config_device_step()

virtual bool esphome::usb_uart::USBUartComponent::config_device_step ( uint8_t step,
bool ok,
const uint8_t * response )
inlineprotectedvirtual

Reimplemented in esphome::usb_uart::USBUartTypeCH34X.

Definition at line 237 of file usb_uart.h.

◆ config_step()

virtual bool esphome::usb_uart::USBUartComponent::config_step ( USBUartChannel * channel,
uint8_t step,
bool reload,
bool ok,
const uint8_t * response )
protectedpure virtual

◆ config_transfer_()

void esphome::usb_uart::USBUartComponent::config_transfer_ ( uint8_t type,
uint8_t request,
uint16_t value,
uint16_t index,
const std::vector< uint8_t > & data = {} )
protected

Definition at line 565 of file usb_uart.cpp.

◆ dump_config()

void esphome::usb_uart::USBUartComponent::dump_config ( )
overridevirtual

Reimplemented from esphome::usb_host::USBClient.

Reimplemented in esphome::usb_uart::USBUartTypeCH34X.

Definition at line 263 of file usb_uart.cpp.

◆ enable_channels()

void esphome::usb_uart::USBUartComponent::enable_channels ( )

Definition at line 533 of file usb_uart.cpp.

◆ get_channels()

std::vector< USBUartChannel * > esphome::usb_uart::USBUartComponent::get_channels ( )
inline

Definition at line 194 of file usb_uart.h.

◆ loop()

void esphome::usb_uart::USBUartComponent::loop ( )
overridevirtual

Reimplemented from esphome::usb_host::USBClient.

Definition at line 215 of file usb_uart.cpp.

◆ on_rx_overflow()

virtual void esphome::usb_uart::USBUartComponent::on_rx_overflow ( USBUartChannel * channel)
inlinevirtual

Reimplemented in esphome::usb_uart::USBUartTypeFT23XX.

Definition at line 209 of file usb_uart.h.

◆ run_config_machine_()

bool esphome::usb_uart::USBUartComponent::run_config_machine_ ( )
protected

Definition at line 594 of file usb_uart.cpp.

◆ setup()

void esphome::usb_uart::USBUartComponent::setup ( )
overridevirtual

Reimplemented from esphome::usb_host::USBClient.

Definition at line 214 of file usb_uart.cpp.

◆ start_config_()

void esphome::usb_uart::USBUartComponent::start_config_ ( bool reload)
protected

Definition at line 554 of file usb_uart.cpp.

◆ start_input()

void esphome::usb_uart::USBUartComponent::start_input ( USBUartChannel * channel)
virtual

Reimplemented in esphome::usb_uart::USBUartTypeFT23XX.

Definition at line 280 of file usb_uart.cpp.

◆ start_output()

void esphome::usb_uart::USBUartComponent::start_output ( USBUartChannel * channel)

Definition at line 349 of file usb_uart.cpp.

Field Documentation

◆ cfg_active_

bool esphome::usb_uart::USBUartComponent::cfg_active_ {false}
protected

Definition at line 248 of file usb_uart.h.

◆ cfg_channel_idx_

uint8_t esphome::usb_uart::USBUartComponent::cfg_channel_idx_ {0}
protected

Definition at line 246 of file usb_uart.h.

◆ cfg_device_phase_

bool esphome::usb_uart::USBUartComponent::cfg_device_phase_ {false}
protected

Definition at line 250 of file usb_uart.h.

◆ cfg_done_

std::atomic<bool> esphome::usb_uart::USBUartComponent::cfg_done_ {false}
protected

Definition at line 244 of file usb_uart.h.

◆ cfg_in_flight_

bool esphome::usb_uart::USBUartComponent::cfg_in_flight_ {false}
protected

Definition at line 251 of file usb_uart.h.

◆ cfg_ok_

bool esphome::usb_uart::USBUartComponent::cfg_ok_ {true}
protected

Definition at line 252 of file usb_uart.h.

◆ cfg_pending_reload_

USBUartChannel* esphome::usb_uart::USBUartComponent::cfg_pending_reload_ {nullptr}
protected

Definition at line 243 of file usb_uart.h.

◆ cfg_reload_

bool esphome::usb_uart::USBUartComponent::cfg_reload_ {false}
protected

Definition at line 249 of file usb_uart.h.

◆ cfg_response_

uint8_t esphome::usb_uart::USBUartComponent::cfg_response_[8] {}
protected

Definition at line 245 of file usb_uart.h.

◆ cfg_single_

USBUartChannel* esphome::usb_uart::USBUartComponent::cfg_single_ {nullptr}
protected

Definition at line 242 of file usb_uart.h.

◆ cfg_step_

uint8_t esphome::usb_uart::USBUartComponent::cfg_step_ {0}
protected

Definition at line 247 of file usb_uart.h.

◆ channels_

std::vector<USBUartChannel *> esphome::usb_uart::USBUartComponent::channels_ {}
protected

Definition at line 239 of file usb_uart.h.

◆ chunk_pool_

EventPool<UsbDataChunk, USB_DATA_QUEUE_SIZE - 1> esphome::usb_uart::USBUartComponent::chunk_pool_

Definition at line 215 of file usb_uart.h.

◆ usb_data_queue_

LockFreeQueue<UsbDataChunk, USB_DATA_QUEUE_SIZE> esphome::usb_uart::USBUartComponent::usb_data_queue_

Definition at line 213 of file usb_uart.h.

◆ USB_DATA_QUEUE_SIZE

int esphome::usb_uart::USBUartComponent::USB_DATA_QUEUE_SIZE = 32
staticconstexpr

Definition at line 212 of file usb_uart.h.


The documentation for this class was generated from the following files: