Application Management

General Description

DFU functions for the application management.

Functions
cy_en_dfu_status_t	Cy_DFU_ValidateApp (uint32_t appId, cy_stc_dfu_params_t *params)
	This function reports whether or not metadata and the specified application is valid.

Function Documentation

Cy_DFU_ValidateApp()

cy_en_dfu_status_t Cy_DFU_ValidateApp	(	uint32_t	appId,
		cy_stc_dfu_params_t *	params )

This function reports whether or not metadata and the specified application is valid.

It checks:

• checksum for applications without format;
• application signature for Cypress Standard User Application format.

This is a weak function and the user may override it in the user's code by providing a function with the same name.

Warning

This function do nothing for MCUBoot flow

Note

It is assumed appId is a valid application number.

Parameters

appId	The application number of the application to be validated.
params	The pointer to a DFU parameters structure. See cy_stc_dfu_params_t .

Returns

See cy_en_dfu_status_t.

• CY_DFU_SUCCESS If the application is valid.
• CY_DFU_ERROR_VERIFY If the application is invalid.