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Image takes up a lot of FLASH space

MMerc.1
Senior

Hi,

I want to use an image but it takes up a lot of space in FLASH memory when I add it.

Example:

Image size ------ (no image) ---- 7.55 KB -------- 2.38 KB (same picture but compressed)

FLASH (free) ---- 811.97KB ----- 385.55 KB ----- 385.55 KB

(Instead of) -------------------------- 804.42 KB ----- 809.59 KB

I don't understand why...

Do you have the same problem?

Best Regards

1 ACCEPTED SOLUTION

Accepted Solutions

Hi 🙂

It´s very hard to believe for me, that 16MBytes of space are not enough for a GUI, but on the other side i don´t know, what you´re planning to do 😉

If it HAS to be uSD-storage, there´s a document, i found...

https://touchgfx.zendesk.com/hc/en-us/articles/207460605

But anyway: This approach needs definitely very good knowledge about hardwareconfiguration... Just to bring the uSD to life is a task, which can drive you insane (just my experience with ST´s HAL-drivers and many other bugs...). Step by step Tutorials about this are just not existent :(

If you want to give the qspi-approach a quick try: watch this Video (and maybe also the whole channel of that guy 🙂 )

https://www.youtube.com/watch?v=12KXreXaLp0

Since CubeIDE 1.3 and FW 1.16 (the blank UI is based on FW 1.15), at some point it´ll ask to migrate... Just answer "Yes" at that point...

A little bit deeper below the surface is this channel:

https://www.youtube.com/channel/UCS1CM3mQiwlDU2nIVXroEtQ

He also has a very good video, what describes the manual qspi-setup via CubeMX and linkerscript...

View solution in original post

15 REPLIES 15
Ozone
Lead

Check the linker-generated map file.

Where is this file?

Could you explain me?

MMerc.1
Senior

UP ! :smirking_face:

Read the documentation/tutorials of your unnamed toolchain.

Map file generation is an optional linker feature. Often set (enabled) with the project setting.

Know your tools.

Martin KJELDSEN
Chief III

Did you do what @Ozone​ asked you to do? Find your map file and check the size of the object for that image. Or just post it here and we can tell you.

Images contain pixels and depending on the quality of your image, the image will take up a pre-defined amount of space in flash. It's unrelated to TouchGFX. We simply read the image and write the value for each pixel.

/Martin

MMerc.1
Senior

Hi,

Here is the map file :

"FLASH";"0x08000000";"";"1024 KB"

".isr_vector";"0x08000000";"0x08000000";"456 B"

".text";"0x080001d0";"0x080001d0";"131,02 KB"

".rodata";"0x08020de4";"0x08020de4";"14,42 KB"

"FontFlashSection";"0x08024794";"0x08024794";"2,24 KB"

"ExtFlashSection";"0x0802508c";"0x0802508c";"518,43 KB"

"_bassin";"0x0802508c";"0x0802508c";"177,25 KB"

"_bidon_base";"0x08051588";"0x08051588";"4,6 KB"

"_bonde_fond";"0x080527f0";"0x080527f0";"2,64 KB"

"_bouton_retour";"0x08053280";"0x08053280";"21,97 KB"

"_filtre";"0x08058a64";"0x08058a64";"94,06 KB"

"_helice";"0x080702a4";"0x080702a4";"33,79 KB"

"_pac_inactif";"0x080789c8";"0x080789c8";"77,44 KB"

"_pompe_filtration_inactif";"0x0808bf88";"0x0808bf88";"53,16 KB"

"_pomperegulation_inactif";"0x08099428";"0x08099428";"12,63 KB"

"_refoulements";"0x0809c6ac";"0x0809c6ac";"2,52 KB"

"_sonde_inactif";"0x0809d0bc";"0x0809d0bc";"3,39 KB"

"_tuyau_3_12_inactif";"0x0809de48";"0x0809de48";"2,64 KB"

"_tuyau_3_6_12_inactif";"0x0809e8d8";"0x0809e8d8";"3,66 KB"

"_tuyau_3_6_9_12_inactif";"0x0809f778";"0x0809f778";"5,06 KB"

"_tuyau_3_6_9_inactif";"0x080a0bb8";"0x080a0bb8";"3,66 KB"

"_tuyau_3_6_inactif";"0x080a1a58";"0x080a1a58";"2,64 KB"

"_tuyau_3_9_12_inactif";"0x080a24e8";"0x080a24e8";"3,66 KB"

"_tuyau_6_9_12_inactif";"0x080a3388";"0x080a3388";"3,66 KB"

"_tuyau_6_9_inactif";"0x080a4228";"0x080a4228";"2,64 KB"

"_tuyau_9_12_inactif";"0x080a4cb8";"0x080a4cb8";"2,64 KB"

"_tuyau_horizontal_inactif";"0x080a5748";"0x080a5748";"588 B"

"_tuyau_vertical_inactif";"0x080a5994";"0x080a5994";"588 B"

"_vanne_horizontal_actif";"0x080a5be0";"0x080a5be0";"1,8 KB"

"_vanne_vertical_actif";"0x080a6310";"0x080a6310";"1,8 KB"

"TextFlashSection";"0x080a6a40";"0x080a6a40";"164 B"

".ARM";"0x080a6ae4";"0x080a6ae4";"8 B"

".preinit_array";"0x080a6aec";"0x080a6aec";"0 B"

".init_array";"0x080a6aec";"0x080a6aec";"20 B"

".fini_array";"0x080a6b00";"0x080a6b00";"8 B"

".data";"0x20000000";"0x080a6b08";"268 B"

"RAM";"0x20000000";"";"320 KB"

".data";"0x20000000";"0x080a6b08";"268 B"

".bss";"0x2000010c";"";"42,65 KB"

"._user_heap_stack";"0x2000aba4";"";"1,5 KB"

The size of the "_bassin" file is 177,25 KB but on my computer it is 26,5 Ko...

The problem is the same for all files.

MMerc.1
Senior

HI,

I have attached an image file. The size of this image is 157,8KB in the linker (Build Analyzer - Memory Details - FLASH - ExtFlashSection) but the size is 4.46KB on my computer.

Could you explain to me how can I have the same size between flash memory and my computer?

chaaalyy
Senior II

203x199 Pixels with 24 bit/Pixel + Alpha = how many Bytes ? ... Images in TouchGFX are not compressed, they are just simple Bitmap Arrays 😉 Maybe there´s a way to use some kind of JPEG-compression, but i fear, this will have heavy impact on performance ...

Hi chaaalyy,

Thank you for your advice.

I created another subject where I want to use a µSD to store all my images : https://community.st.com/s/feed/0D50X0000CAuoHJ

Do you have any ideas ?