Application Layer

Last Updated on : 2024-11-20 08:51:43download

The application layer provides services directly for the application process and also makes requests to the board layer and the components layer.

File name	Description
app_main.c	The entry to applications.
app_dps.c	The declaration of data points (DPs) and implementation of feature functions.
app_dps.h	The declaration of some feature functions.

app_dps_write_to_storage

Function	app_dps_write_to_storage
Feature description	Used to store DP status.
Parameter	None
Return value	None
Note	Store the current status of DPs.

app_dps_read_from_storage

Function	app_dps_read_from_storage
Feature description	Used to read the last state of a device from the nonvolatile memory.
Parameter	None
Return value	None
Note	Read the last state of a device.

app_light_init

Function	app_light_init
Feature description	Used to initialize a device.
Parameter	None
Return value	None
Note	Read the last state of a device from its nonvolatile memory and perform initial configuration to implement memory retention after power off.

app_light_reset_run

Function	app_light_reset_run
Feature description	Used to reset a device.
Parameter	None
Return value	None
Note	Power on and off three times to reset a device.

app_dps_upload

Function	app_dps_upload
Feature description	Used to report DP status data to the cloud.
Parameter	`unsigned char dpid`: The DP ID. `unsigned char dpty`: The data type of a DP. `unsigned char dplen`: The length of DP data. `unsigned char *dpvalue`: The DP data.
Return value	1
Note	Call this function to report DP data.

app_dps_download

Function	app_dps_download
Feature description	Used to receive DP control commands from the cloud.
Parameter	`unsigned char dpid`: The DP ID. `unsigned char dpty`: The data type of a DP. `unsigned char dplen`: The length of DP data. `unsigned char *dpvalue`: The DP data.
Return value	None
Note	The function call is encapsulated in the SDK. After the Beacon device receives commands from the cloud, the SDK will proactively call this function. In this function, the device can execute commands and then return the changed DP status.

app_light_run

Function	app_light_run
Feature description	The main event loop.
Parameter	None
Return value	None
Note	This function is used to indicate pairing states, periodically store the DP status, run timer countdown, and reset a device.