[GitHub] [mynewt-core] kasjer commented on issue #3066: RAM overflow error when build app for PineTime

["kasjer (via GitHub)" <gi...@apache.org>]

kasjer commented on issue #3066:
URL: https://github.com/apache/mynewt-core/issues/3066#issuecomment-1719325909

   @Kisszalimo, while I don't have pinetime watch to verify that it works, here is what you may try:
   
   There is pending PR #3063 that adds options that can tweak LVGL a little bit so it will fit in memory.
   You could merge commits from this PR to your mynewt-core branch.
   I hope PR will be merged soon.
   
   Next you can change you target syscfg.yml to have this:
   ```yml
   syscfg.vals:
       LCD_ITF: spi
       LCD_SPI_DEV_NAME: '"spi0"'
       LCD_SPI_FREQ: 8000
       LCD_SPI_MODE: BUS_SPI_MODE_0
       LCD_CS_PIN: 25
       LCD_RESET_PIN: 26
       LCD_DC_PIN: 18
       LCD_BL_PIN: 13
       LVGL_DISPLAY_HORIZONTAL_RESOLUTION: 240
       LVGL_DISPLAY_VERTICAL_RESOLUTION: 240
       LVGL_ST7789: 1
      # this reduce memory usage of LVGL
       LV_MEM_SIZE: 40000
   ```
   I did test it on **nordic_pca10040** target that has same MCU but no other peripherals except LCD


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