LVGL ported to the STM32H745I Discovery.

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/lvgl/lv_port_stm32h745i_disco.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