Please refer to the EZ-Serial firmware and user guide v1.1.2. There are examples about how to transmit data in chapter 3: https://www.cypress.com/documentation/software-and-drivers/ez-serial-ez-ble-module-firmware-platform
we refer the EZ-Serial firmware and user guide v1.1.2 and EZ-Serial Host API Protocol Library file, it's no example to transmit the date of MCU via to uart, can you help to advice it,and help to provide the demo code , like one module send date and other received the date , and print the transmit date ,TKS;
Sorry for my previous mistake, you should refer to the user guide v1.1.1 for CYBLE-212020.
If you don't want to use the EZ-Serial FW, please refer to the UART-BLE demo: https://www.cypress.com/blog/problem-solver/project-020-uart-ble-bridge