I am developing code on an STM32F072B-DISCOVERY board that I wish to use on an STM32F031F4P6 micro. I downloaded STM32CubeF0, found an I2C example that I can use on the Discovery board, built it, modified it, and got some I2C and GPIO functionality the way I want it. Now I want to change the project so that it compiles for the STM32F031F4P6 micro.
I found under “Options for Target” where to change the device. I see that when I do that, the startup file changes to startup_stm32f031.s. I also see that many other files in the project are labeled as stm32f0xx, which I reasonably assume means that they will work for any stm32f0 micro.
I then found that a folder named Device had automagically appeared under MDK-ARM/RTE (on the hard drive, not in the Project window of the uVision IDE). There are two folders in Device, STM32F031F4 and STM32F078RB. The former has two files, system_stm32f0xx.c and startup_stm32f031.s. The latter contains system_stm32f0xx.c file and startup_stm32f072.s.
Question #1: I see that the two system_stm32f0xx.c files that recently appeared are identical to each other but are older than the one that appears in the Project window. What am I to do with these files?
Question #2: startup_stm32f072.s is what appears in the Project window. I don’t see how to change it to startup_stm32f031.s.
Question #3: In the Project window, I see a file under the Drivers/BSP/STM32F072B-Discovery folders called stm32f072b_discovery.c. I am not finding any files in STM32CubeF0 to replace this with.
Also, is there anything else that I might be missing or making trouble for myself that I haven’t yet encountered?