Bsp Customization; Sdram Configuration; Figure 34. Calibration Steps - ST STM32CubeF4 User Manual

Demonstration customization and configuration
Once this runtime calibration is done, the touch screen calibration parameters are saved to
the RTC Backup data registers: RTC_BKP_DR0 and RTC_BKP_DR1, so the next time the
application is restarted, these parameters are automatically restored and there is no need to
re-calibrate the touchscreen.
Note: The touch screen calibration step is not needed for STM32F479I-EVAL and
STM32F469-DISCO demonstrations.
5.4

BSP customization

5.4.1

SDRAM configuration

The SDRAM capacity is 1 Mbyte x 32 bits x 4 banks. The BSP SDRAM driver offers a set of
functions to initialize, read/write in polling or DMA mode.
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Figure 34. Calibration steps

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