ST STM32L4+ Series Reference Manual page 981

RM0432
30.14.8 Configuring the video mode pattern generator
DSI Host can transmit a color bar pattern without horizontal/vertical color bar and D-PHY
BER testing pattern without any kind of stimuli.
Figure 239
1. Configure the DSI_MCR register to enable video mode. Configure the video mode type
using DSI_VMCR.VMT.
2. Configure the DSI_LCOLCR register.
3. Configure the frame using registers shown in
indicated the transferred pixels).
4. Configure the pattern generation mode (DSI_VMCR.PGM) and the pattern orientation
(DSI_VMCR.PGO), and enable it (DSI_VMCR.PGE).
DSI Host (DSIHOST) applied to STM32L4R9xx and STM32L4S9xx only
shows the programming sequence to send a test pattern:
Figure 239. Programming sequence to send a test pattern
Video pattern generator
RM0432 Rev 6
Figure 240, where the gray area
Video Mode
selection
Color coding
configuration
Video frame
configuration
configuration
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