LiteOS Code Entry

The LiteOS entry is in the main.c file of a project. The basic process is as follows:

INT32 main(VOID)
{
    BoardConfig();
    HardwareInit();

    PRINT_RELEASE("\n********Hello Huawei LiteOS********\n"
                  "\nLiteOS Kernel Version : %s\n"
                  "build data : %s %s\n\n"
                  "**********************************\n",
                  HW_LITEOS_KERNEL_VERSION_STRING, __DATE__, __TIME__);

    UINT32 ret = OsMain();
    if (ret != LOS_OK) {
        return LOS_NOK;
    }

    OsStart();

    return 0;
}

Configure the memory end address using BoardConfig(), initialize the hardware using HardwareInit(), and print the version information of Huawei LiteOS.

Execute OsMain() to initialize the Huawei LiteOS kernel and routines. A user task is created in the OsMain() function, and the task processing function is app_init().

Call OsStart() to start task scheduling. Huawei LiteOS starts to work properly.

Description of the LiteOS Code Directory Structure

Source code stored in each directory is as follows: