Keil macro definition and how to know the microcontroller resource name

In Keil's project settings, you need to change the macro definition according to the selected microcontroller. If the macro definition is not changed after the program is transplanted, an error may sometimes be reported.

This macro definition represents the type of chip, as follows:

Therefore, you need to change the macro definition according to the type of your chip.

How do I know the resource names of my chip? For example, what is the name of the timer?

You can open the stm32f10x.h file and scroll down to see:

These macros represent:

STM32F10X_LD_VL corresponds to LowDensity ValueLine, i.e. the small capacity STM32F100

STM32F10X_MD_VL corresponds to MediumDensity ValueLine, i.e. the medium-density STM32F100

STM32F10X_HD_VL corresponds to HighDensity ValueLine, i.e. the large capacity STM32F100

STM32F10X_CL corresponds to ConnectivityLine, i.e. STM32F105, STM32F107

In fact, the more commonly used one is STM32F103:

STM32F10X_LD corresponds to LowDensity, i.e. small capacity STM32F103, 101

STM32F10X_MD corresponds to MediumDensity, which is the medium-density STM32F103, 101

STM32F10X_HD corresponds to HighDensity, i.e. the large capacity STM32F103, 101

For example, the chip is STM32F103C8T6, the flash is 64K, which is a medium-capacity STM32F103, that is, STM32F10X_MD, so it corresponds to the following in the stm32f10x.h file:

It can be seen that the chip has three ordinary timers, TIM2, TIM3, and TIM4, one advanced timer, TIM1, and three serial ports. . .