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iMXRT1064 Emwin Demo 16 bpp

Question asked by Anuj Tanksali on Jan 15, 2020
Latest reply on Feb 3, 2020 by Anuj Tanksali

I have a Emwin Demo SDK code generated for iMXRT EVK 1064 board.  I am using MCUXpresso 11.1 version with SDK 2.7.0


The Emwin Demo default LCD configuration is for 32 bit mode i.e. LCD_BITS_PER_PIXEL is 32. I am using 2 LCD buffers. When i change LCD_BITS_PER_PIXEL to 16 bit i get linker error regarding memory as NCACHE_REGION is only 2MB and BOARD_SDRAM region is 30MB. (Error: section `.bss_RAM2' will not fit in region `NCACHE_REGION')


Following is the summary of settings


NCACHE_REGION         BOARD_SDRAM        LCD_BITS_PER_PIXEL             Debug

30 MB                                    2 MB                                        16                          program crashes **

2 MB                                       30 MB                                      32                          success  


** runs ok when MCUXpresso 10.3 and SDK 2.6.1.


So what is the ideal BOARD_SDRAM and NCACHE_REGION memory settings for 16 bits per pixel on MCUXpresso 11.1 and SDK 2.7.0