BareMetal

µGFX can run on any system without any underlying OS or RTOS. The RAW32 port provides all the required implementations to run on a bare metal system.

Memory Management

µGFX can run either completely on static memory or on dynamic memory. While the first is very important for security and time critical applications it can be very tedious in generic applications. The RAW32 provides a memory manager to work with dynamic memory on any bare metal system. The following two configuration options are available:

• Use the µGFX built-in memory manager
• Use the C runtime library memory manager

Which one is used depends on the value of GOS_RAW_HEAP_SIZE inside of the configuration file.

Built-in memory manager

When GOS_RAW_HEAP_SIZE is set to a value greater than 0 then the built-in memory manager of µGFX is used. In this case the value of GOS_RAW_HEAP_SIZE specifies the size of the memory pool which the built-in memory manager will use.

C runtime library memory manager

When GOS_RAW_HEAP_SIZE is set to 0 then the memory manager of the C runtime library will be used. In that case gfxAlloc() and gfxFree() are just wrappers around malloc() and free()