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6 - STMicroelectronics Programming Tools
The true source files of the project are actually MAIN.ASM and TIMER500.ASM. All other files
are auxiliary files.
The PROJECT.WPJ file is the configuration file for the editor itself; it defines also the tools to
be used.
The REG72251.ASM file is a service file that declares all the registers as global identifiers, so
that the linker will be able to know their addresses. The
REGISTER.INC file is complementary
to the previous one; it is meant to be included in all the source files that make use of one or
more peripheral devices or system registers. It provides the
EXTERN definitions for all the
registers defined as
PUBLIC inthepreviousfiles,andalsoasetofEQUate statements that
associate the predefined names of the individual bits in some peripheral or system registers
with constants, so that the mnemonic names of these bits can be used in instructions like
BSET or BRES that expect a bit number. The MAP72251.ASM file is a bit similar to
REG72251.ASM. It defines the location and size of the memory available in the ST72251.
CATERPIL.BAT is the file that defines the assembly, link, hex file generation and the back
annotation process.
The two files REG72251.ASM and MAP72251.ASM define the microcontroller that is used for
the project. If the project has to be changed to use another member of the ST7 family, it is
only necessary to change these two files for those of another microcontroller of the ST7
family and the project will work the same way—provided the new microcontroller contains all
the resources required by the project.
6.4.3 Description of the program files
6.4.3.1 The PROJECT.WPJ file
This file contains the settings and the tool references for the project, that is the current working
directory and the commands for assembling, linking and executing the program. Most of them
are grouped in the menu option Project/Configure... that shows the following dialog box:
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