I will change some parameters in this. Is it possible to find the prject (source code) somewhere?
The EZ-Serial firmware is not public for the customer. Please find the user guide to see if it can satisfy your application: https://www.cypress.com/documentation/software-and-drivers/ez-serial-ez-ble-module-firmware-platform
If you have some special requirement for the EZ-Serial firmware, please contact the local FAE/Marketing or create a CSF case for it.