you can use at framework to send/recv data in socket API example: see examples\tcp_through_module_based_at_socket project: see board\TencentOS_tiny_EVB_MX_Plus\KEIL\tcp_through_module_based_at_socket
1. see: TencentOS-tiny\board\STM8L052R8T6\IAR\hello_world 2. compile/debug/run with IAR for STM8