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LVGL ported to the STM32H745I Discovery with EEZ Studio

STM32H745I Discovery board running LVGL with EEZ-Framework demo

STM32H745I Discovery demo project opened inside the EEZ Studio

The STM32H745I Discovery kit is an affordable development board with:

  • 480x272 RGB interface LCD with capacitive multi-touch panel
  • Arm® Cortex®-M7 480MHz and Arm® Cortex®-M4 240MHz dual-core
  • 2 Mbytes Flash Memory
  • 1 Mbyes RAM
  • 2 x 512-Mbit Quad-SPI NOR Flash Memory
  • 128-Mbit SDRAM
  • GPU.

The CubeMX drivers are used to initilaize the peripherals.

The project was created with CubeIDE.

Get started

  • Clone the project: git clone https://github.com/eez-open/stm32h745i-disco-lvgl-demo.git --recurse-submodules
  • Import into CubeIDE

Notes

  • STM32H745I-Disco uses
    • TFT
      • TFT model's RK043FN48H
      • BSP/stm32h745i_discovery_lcd.c initialize LTDC, DMA2D, TIM8 Channel 3
      • BSP/stm32h745i_discovery_lcd.c drive RK043FN48H
      • RK043FN48H has touch control capability and uses FT5336QQ Capacitive Touch Panel Controller
        • BSP/stm32h745i_discovery_bus.c initialize I2C4 and control it
    • SPI NOR Flash
      • Flash model's MT25TL01G
      • BSP/stm32h745i_discovery_qspi.c initialize FLASH
    • SDRAM
      • SDRAM model's MT48LC4M32B2
      • BSP/stm32h745i_discovery_sdram.c initialize SDRAM

BSP initialize necessary peripherals so we must disable the CubeMX generated codes.

  • CubeMX integration with BSP
    • Disable CubeMX generated Functions
      • HAL_LTDC_MspInit, HAL_LTDC_MspDeInit, MX_LTDC_Init
      • MX_DMA2D_Init, HAL_DMA2D_MspInit, HAL_DMA2D_MspDeInit
      • MX_TIM8_Init, HAL_TIM_PWM_MspInit, HAL_TIM_MspPostInit, HAL_TIM_PWM_MspDeInit
      • MX_I2C4_Init, HAL_I2C_MspInit, HAL_I2C_MspDeInit
      • MX_QUADSPI_Init, HAL_QSPI_MspInit, HAL_QSPI_MspDeInit, QUADSPI_IRQHandler
      • MX_MDMA_Init, MDMA_IRQHandler
      • MX_FMC_Init, HAL_FMC_MspInit, HAL_FMC_MspDeInit
      • HAL_SDRAM_MspInit, HAL_SDRAM_MspDeInit
      • MX_GPIO_Init, EXTI2_IRQHandler

SDRAM Memory Map

  • SDRAM Start Address : 0xD0000000
    • LCD Buffer : 0xD0000000 - 0xD007F800 : Size 4802724=522.240B
    • LVGL Buffer : 0xD007F810 - 0xD00FF010 : Size 4802724=522.240B
    • LVGL Buffer 2: 0xD00FF020 - 0xD017E820 : Size 4802724=522.240B

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