Espressif ESP32-S2 User Manual

Chapter 2. API Reference
esp_local_ctrl_transport_config_httpd_t *httpd
This is same as httpd_ssl_config_t. See esp_https_server.h for available configuration
parameters.
Structures
struct esp_local_ctrl_prop
Property description data structure, which is to be populated and passed to the
esp_local_ctrl_add_property() function.
Once a property is added, its structure is available for read-only access inside get_prop_values() and
set_prop_values() handlers.
Public Members
char *name
Unique name of property
uint32_t type
Type of property. This may be set to application defined enums
size_t size
Size of the property value, which:
• if zero, the property can have values of variable size
• if non-zero, the property can have values of fixed size only, therefore, checks are performed internally
by esp_local_ctrl when setting the value of such a property
uint32_t flags
Flags set for this property. This could be a bit field. A flag may indicate property behavior, e.g. read-only
/ constant
void *ctx
Pointer to some context data relevant for this property. This will be available for use inside the
get_prop_values and set_prop_values handlers as a part of this property structure. When
set, this is valid throughout the lifetime of a property, till either the property is removed or the
esp_local_ctrl service is stopped.
void (*ctx_free_fn)(void *ctx)
Function used by esp_local_ctrl to internally free the property context when
esp_local_ctrl_remove_property() or esp_local_ctrl_stop() is called.
struct esp_local_ctrl_prop_val
Property value data structure. This gets passed to the get_prop_values() and set_prop_values()
handlers for the purpose of retrieving or setting the present value of a property.
Public Members
void *data
Pointer to memory holding property value
size_t size
Size of property value
void (*free_fn)(void *data)
This may be set by the application in get_prop_values() handler to tell esp_local_ctrl
to call this function on the data pointer above, for freeing its resources after sending the
get_prop_values response.
struct esp_local_ctrl_handlers
Handlers for receiving and responding to local control commands for getting and setting properties.
Espressif Systems 605
Submit Document Feedback
Release v4.4

Espressif ESP32-S2 Specifications

General

Brand	Espressif
Model	ESP32-S2
Category	Single board computers
Language	English