New applications and new hardware platform files could be created in the Wiced SDK simple defining the makefile and associated .c and .h files.
Below blog post crates an application to create, join, and delete threads using WICED SDK APIs.
Below blog post demonstrates to create new platform with new MCU based on the existing family of STM32F4xxx MCUs.
Below blog post creates an application to send emails based on the state changes on a given GPIO input. GPIO input state is changed by a push button switch on the evaluation board.
Hope it helps.
Thank's for your support, will get back on checking the details mentioned.