Technical Center

When the customer builds the SS881X development environment, the User Command path needs to be modified because the installation directory of Keil C51 is not in the default directory of the C drive. After the modification, it was found that it could not be run, and the phenomenon is as follows.

The Sinhmicro SINH51 platform is an 8-bit MCU platform compatible with the MCS51 instruction set, including SS80X, SS880X, SS881X, SS882X, SS883X, SS885X, SS886X, and other MCU families. PlatformIO is an open source IoT development ecosystem that provides a cross-platform code builder and integrated development environment (IDE). Together with one of the most popular code editors---- Visual Studio Code (VS Code), you can set up an easy-to-use and extremely convenient SINH51 development environment.

The .map file generated after compiling the code in the Keil C51 contains a lot of useful information, and when I recently looked at the .map file to check the space usage of each part of the code, I saw some strange symbols in the .map file

When developing SS881X/SS880X chips with keil C51, there will be the following two different sounds for the initialization of some global variables: First, when defining this global variable, assign the variable a value at the same time. Second, After defining the global variable, assign the variable a value. So what are the similarities and differences between these two methods for some global variable initialization?