Methods and precautions for using the standard firmware library of IAR for stm8

The standard library is actually quite convenient. With a template, if you change the parameters, you don't need to check the manual and redefine the register values.

Part 1, introduction to the stm8 standard library.

The standard library name code of stm8 is stsw-stm8069. According to this code, you can download the latest firmware library from the official website of st.

After decompressing the firmware library, there are several folders. I will just briefly explain the functions of each folder and file here. For specific instructions, please refer to the chm help document in the file package.

Libraries is the driver folder, the inc folder inside is the h file, and the src folder is the c file. These are the most critical things.

Utilities is the EVAL development board program provided by stm. If you don't have this EVAL development board, you can ignore it. If you have it, you can ignore it. Anyway, it's just a very simple LED program.

The Project folder is a project template file, which contains two important folders.

One ends with Example, which is an example program provided by ST. When we write a program, we can directly copy and paste it from here and make some minor modifications before using it. And if you don’t know how to write it, there are many examples here to see.

The other one ends with Template, which means template. It contains three compiler templates. You can use them directly. In addition, there are several important files.

stm8s_conf.h is the configuration file. The official document says that some peripherals can be turned on or off by commenting them out. I use this file just to add my own h file at the end, that's all.

stm8s_it.c is the interrupt handling file. All interrupt handling programs are written here. The template has been written, and you can just fill in the program. The h file with the same name can basically be ignored.

Regarding IAR, you can select the files in the EWSTM8 folder and use them directly. If you don't have a slight obsessive-compulsive disorder like me about program structure, you don't need to read it later.

The second part is IAR settings.

The official st has an IAR template. If you don't delete any files and ignore the official file organization structure, you can use it directly. No other settings are required.

The following content is reset according to the official template after removing files and folders that are not used by your program.

The library files used by our own program are only the inc and src folders and the main.c, stm8s_conf.h, stm8s_it.c, and stm8s_it.h files under Template.

I won’t talk about creating new IAR projects.

After the new project is created, right-click the project name on the left---select option---in the general option----Target----Device select the specific chip model. After testing, I found that the chip model selected when creating a new IAR project is invalid. If you don't change it here, the compiled program may be invalid.

Then add additional header file directories and device models in C/C++ Compier---Proprecessor. Similarly, if you do not use the standard library, you do not need to write anything here. Otherwise, you must write it, or an error will be reported. The model name is shown in the figure. Compared with the above model, the C6 behind it is omitted. The specific name depends on the source code of the firmware library. $PROJ_DIR$ indicates the current working directory.

Set the output hex file, check Output in Output Converter, and select Intel extended format output.

Add the firmware library C file, and do not add the h file. When adding the C file, please note that if the function chip corresponding to the C file does not exist, either do not add it to the project, or after adding it to the project, right-click the C file in the left sidebar and select -option--check extend from build to block it.