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mqtt: Add docs on MQTT_CUSTOM_OUTBOX implentation

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Closes https://github.com/espressif/esp-mqtt/issues/217
This commit is contained in:
David Cermak 2022-01-17 10:47:59 +01:00
parent 124b5f5245
commit c9794ad08f
1 changed files with 5 additions and 1 deletions
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6
components/mqtt/Kconfig
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@ -137,8 +137,12 @@ menu "ESP-MQTT Configurations"
bool "Enable custom outbox implementation" bool "Enable custom outbox implementation"
default n default n
help help
Set to true if a specific implementation of message outbox is needed (e.g. persistant outbox in NVM or Set to true if a specific implementation of message outbox is needed (e.g. persistent outbox in NVM or
similar). similar).
Note: Implementation of the custom outbox must be added to the mqtt component. These CMake commands
could be used to append the custom implementation to lib-mqtt sources:
idf_component_get_property(mqtt mqtt COMPONENT_LIB)
set_property(TARGET ${mqtt} PROPERTY SOURCES ${PROJECT_DIR}/custom_outbox.c APPEND)
config MQTT_OUTBOX_EXPIRED_TIMEOUT_MS config MQTT_OUTBOX_EXPIRED_TIMEOUT_MS
int "Outbox message expired timeout[ms]" int "Outbox message expired timeout[ms]"