Hilco

Hello, We have hardware with an STM32F070RBT6 with 16kB SRAM and 128kB flash of which we have used 32kB for a bootloader, so only 96kB flash available. Also a SPI-flash memory of 32Mbit (4MByte) is available for storing information, only a small part of 256 kByte of this 4MByte is reserved for other purposes. The libraries I need for this project are added, see the gfxconf.h wich is attached. I even do not have any application yet, but compiling these librarys I already use about ~50kB of flash, so only 46kB remaining. I need to implement a big menu-structure. My worry's are that we run out of flash-memory before I finish the project. Can we have mail-contact about this? I can send then some confidential information about the planned menu-structure for this project. gfxconf.h

Thanks for the quick reply, I will look at it what's best for me. I have another question regarding code-size. I will open a new topic about that. Kind regards, Hilco

Thanks Joel and Inmarket for the quick reply, I already had taken a look into the NATIVE image format, it looks like a good option for me. I also had already played with in ROMFS Putting the NATIVE image format on my SPI-Flash is no big deal But do I need a file-system like FATFS for reading from the SPI-FLASH. I know I can add FATFS with Cube-MX, (I am using an STM-32) but in my opinion it is a little overkill, and not to mention it needs precious microcontroller flash. I was thinking to use the USERFS, and make a simple file-system. Is there an example for that? @Inmarket, I think the GdispBitBlit is a good option for me. What I already did was adding the #define GDISP_HARDWARE_BITFILLS TRUE and I looked into the example from the driver of the STM32LTDC, "gdisp_lld_STM32LTDC.c" where also a gdisp_lld_blit_area routine is used. I used that example as a startingpoint for my own implemtation in the "gdisp_lld_ILI9341.c" Kind regards, Hilco

Hello, I want to store my pictures on an external SPI-flash memory, because the flash of the microcontroller is to small. At the moment I store them in raw format, containing no more then pixeldata, no header at all. In the application I know for each picture what the length, width and hight is and what the offset is in the SPI-flashmemory. I have written a function which uses DMA to read from the SPI-flash, I use double buffering to read a complete image as quick as possible from the SPI-flash. One buffer is filled with DMA, while the other is used to write with bitbanging to an ILI9341 with parallel interface. I have added a gdisp_lld_blit_area function in the gdisp_lld_ILI9341.c file, and call the function described above. But know I'm stuck at how to use the uGFX library correct to pass picture-information so that the GDisplay struct is filled the correct way with x-size , y-size etc. What is the best way to continue? Kind Regards, Hilco