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  • Table Of Contents
  • STM32 HAL/LL Drivers Documentation
  • Drivers Overview
  • STM32U5 HAL/LL Drivers Documentation
    • STM32U5 Drivers Overview
    • HAL Drivers
      • HAL Common Drivers
      • HAL ADC
      • HAL ADF
      • HAL AES
      • HAL COMP
      • HAL CORDIC
      • HAL CORTEX
      • HAL CRC
      • HAL CRS
      • HAL DAC
      • HAL DBGMCU
      • HAL DCACHE
      • HAL DCMI
      • HAL DMA2D
      • HAL DMA
      • HAL DSI
      • HAL EXTI
      • HAL FDCAN
      • HAL FLASH
      • HAL FMAC
      • HAL GFXMMU
      • HAL GFXTIM
      • HAL GPIO
      • HAL GPU2D
      • HAL GTZC
      • HAL HASH
      • HAL HCD
        • HAL HCD Overview
        • HAL HCD How to Use
        • HAL HCD Use Cases
          • HAL HCD Use Cases
            • Prerequisite
            • initialization sequence
        • HAL HCD APIs
      • HAL I2C
      • HAL ICACHE
      • HAL IWDG
      • HAL JPEG
      • HAL LPTIM
      • HAL LTDC
      • HAL MDF
      • HAL MMC
      • HAL NOR
      • HAL OPAMP
      • HAL PCD
      • HAL PKA
      • HAL PSSI
      • HAL PWR
      • HAL Q
      • HAL RAMCFG
      • HAL RCC
      • HAL RNG
      • HAL RTC
      • HAL SAI
      • HAL SD
      • HAL SDIO
      • HAL SMARTCARD
      • HAL SMBUS
      • HAL SPI
      • HAL SRAM
      • HAL SYSCFG
      • HAL TAMP
      • HAL TIM
      • HAL UART
      • HAL UCPD
      • HAL USART
      • HAL VREFBUF
      • HAL WWDG
      • HAL XSPI
    • LL Drivers
  • HAL HCD Use Cases
    • Prerequisite
    • initialization sequence

HAL HCD Use Cases ¶

Prerequisite ¶

This diagram illustrates the prerequisite steps for initializing the system

@startuml ==Prerequisite== ' To add a number by line 'autonumber ' Fix order of each column participant "User Application" as part1 participant "Driver HCD" as part2 Participant "USB OTG Core" as part4 Participant "USB DRD Core" as part5 participant "System" as part3 part1->part3 : HAL_Init() part3 --> part1 part1->part3 : Configure system clock part3 --> part1 part1->part3 : Configure GPIO, NVIC @enduml

Called functions:

  • HAL_HCD_Init()

initialization sequence ¶

@startuml participant App as "User application" participant "<font color=green><b>HAL HCD Driver</b></font>" as HCD participant "USB DRD CORE" as DRD participant "USB OTG CORE " as OTG participant "HCD_IRQHandler " as IRQ == Initialization == App -> HCD : HAL_HCD_Init alt#grey #lightgrey If (instance == HAL_ HCD_OTG_FS) or (instance ==HAL_HCD_OTG_HS) HCD->OTG : USB_OTG_HCD_InitDriver OTG-->HCD end alt#grey #lightgrey If (instance == HAL_HCD_DRD_FS) HCD->DRD : USB_DRD_HCD_InitDriver DRD-->HCD end App <-- HCD : HAL_OK or HAL_INVALID_PARAM == Configuration== App -> HCD : HAL_HCD_SetConfig alt#grey #lightgrey If (instance == HAL_ HCD_OTG_FS) or (instance ==HAL_HCD_OTG_HS) HCD->OTG : USB_OTG_DisableGlobalInterrupt OTG-->HCD end alt#grey #lightgrey If (instance == HAL_HCD_DRD_FS) HCD->DRD : USB_DRD_DisableGlobalInterrupt DRD-->HCD end alt#grey #lightgrey If (instance == HAL_ HCD_OTG_FS) or (instance ==HAL_HCD_OTG_HS) HCD->OTG : USB_OTG_InitCore OTG-->HCD end alt#grey #lightgrey If (instance == HAL_HCD_DRD_FS) HCD->DRD : USB_DRD_InitCore DRD-->HCD end alt#grey #lightgrey If (instance == HAL_ HCD_OTG_FS) or (instance ==HAL_HCD_OTG_HS) HCD->OTG : USB_OTG_SetCurrentMode OTG-->HCD end alt#grey #lightgrey If (instance == HAL_HCD_DRD_FS) HCD->DRD : USB_DRD_SetCurrentMode DRD-->HCD end alt#grey #lightgrey If (instance == HAL_ HCD_OTG_FS) or (instance ==HAL_HCD_OTG_HS) HCD->OTG : USB_OTG_InitHost OTG-->HCD end alt#grey #lightgrey If (instance == HAL_HCD_DRD_FS) HCD->DRD : USB_DRD_InitHost DRD-->HCD end App <-- HCD :HAL_OK or HAL_ERROR == Process== App -> HCD : HAL_HCD_Start alt#grey #lightgrey If (instance == HAL_ HCD_OTG_FS) or (instance ==HAL_HCD_OTG_HS) HCD->OTG : USB_OTG_StartHost OTG-->HCD end alt#grey #lightgrey If (instance == HAL_HCD_DRD_FS) HCD->DRD : USB_DRD_StartHost DRD-->HCD end HCD -->App : HAL_OK or HAL_INVALID_PARAM @enduml

Called functions:

  • HAL_HCD_Init()

  • HAL_HCD_SetConfig()

  • HAL_HCD_Start()

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