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Ebun.1
Ebun.1
Senior
December 14, 2020
Solved

SDRAM capacity used by Touch GFX

  • December 14, 2020
  • 2 replies
  • 770 views

Thank you for helping.

How much SDRAM capacity does TouchGFX actually consume?

Please tell me the unit in bytes.

environment

board: STM32F769I-DISCO

TouchGFX: Ver4.15.0

This topic has been closed for replies.
Best answer by Romain DIELEMAN

Hi Ebun.1,

If you are using the application template available from TouchGFX Designer for the STM32F769I-disco board, the SDRAM is only used to store framebuffers. For this board, one framebuffer is set at the address 0xC000000. In general the amount of memory used by a framebuffer is equal to: the width * height * color depth in bits / 8 bytes, so in this case : 800*480*16/8 = 768000 bytes

/Romain

2 replies

Romain DIELEMAN
Romain DIELEMANBest answer
ST Employee
December 14, 2020

Hi Ebun.1,

If you are using the application template available from TouchGFX Designer for the STM32F769I-disco board, the SDRAM is only used to store framebuffers. For this board, one framebuffer is set at the address 0xC000000. In general the amount of memory used by a framebuffer is equal to: the width * height * color depth in bits / 8 bytes, so in this case : 800*480*16/8 = 768000 bytes

/Romain

Ebun.1
Ebun.1Author
Senior
December 14, 2020

Hi, Romain Dieleman

Thank you for your response.

I understand.

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