Bsp Customization; Sdram Configuration; Table 5. Lcd Frame Buffer Locations; Figure 16. Sdram Initialization - ST STM32CubeH7 User Manual

Demonstration customization and configuration
5.3

BSP customization

5.3.1

SDRAM configuration

The BSP SDRAM driver offers a set of functions to initialize, read/write in polling mode or
DMA mode.
The SDRAM external memory must be initialized before the GUI initialization to allow the
SDRAM to be used as LCD layers frame buffer.
LCD layer 0
LCD layer 1
1. NUM_VSCREENS: number of virtual screen defined in LCDConf.c file.
2. NUM_BUFFERS: number of multi buffer defined in LCDConf.c file.
28/76

Figure 16. SDRAM initialization

Table 5. LCD frame buffer locations

Layer
0xD000 0000
0xD0000000 +
(size of frame buffer * NUM_VSCREENS
UM2222 Rev 2
Address
(1)
* NUM_BUFFERS)
UM2222
(2)