STM32Cube MCU Package for STM32F1 series (HAL, Low-Layer APIs and CMSIS (CORE, DSP, RTOS), USB, TCP/IP, File system, RTOS, Graphic - coming with examples running on ST boards: STM32 Nucleo, Discovery kits and Evaluation boards)
Resource
UM1847 - Getting started with STM32CubeF1 firmware package for STM32F1 series User manual (PDF)
PDF - STM32F103xC, STM32F103xD, STM32F103xE Data Sheet