As a beginner, using MDK5.30 which contains the legacy support pack downloaded from www.keil.com, to compiler a legacy project about STM32F051R8T6, but error occurs as following:
Build started: Project: Porject
Error: *** Project 'Porject', Target 'Open32F0-D', Device 'STMicroelectronics::STM32F051R8' is not supported by Toolchain ! ***.
I`m sure that the support pack of STM32F0xx_DFP.2.1.0 had installed. Would you tell me how to deal with this trouble?