Establishing communication between EVM430FR6043 and nRF52832

Hello, I want to configure the nRF52832 such that if I send a command 'start' from the nRF connect app to UART, I can toggle an LED on EVM430FR6043 and configure one of the EVM's pin as input to the data which is being sent from EVM to nRF . How can I do the change in the UART code of nRF ?

Related