block/GPIOA:
  description: General purpose I/O.
  items:
  - name: CRL
    description: Port configuration register low (GPIOn_CRL).
    byte_offset: 0
    fieldset: CRL
  - name: CRH
    description: Port configuration register high (GPIOn_CRL).
    byte_offset: 4
    fieldset: CRH
  - name: IDR
    description: Port input data register (GPIOn_IDR).
    byte_offset: 8
    access: Read
    fieldset: IDR
  - name: ODR
    description: Port output data register (GPIOn_ODR).
    byte_offset: 12
    fieldset: ODR
  - name: BSRR
    description: Port bit set/reset register (GPIOn_BSRR).
    byte_offset: 16
    access: Write
    fieldset: BSRR
  - name: BRR
    description: Port bit reset register (GPIOn_BRR).
    byte_offset: 20
    access: Write
    fieldset: BRR
  - name: LCKR
    description: Port configuration lock register.
    byte_offset: 24
    fieldset: LCKR
fieldset/BRR:
  description: Port bit reset register (GPIOn_BRR).
  fields:
  - name: BR
    description: Reset bit %s.
    bit_offset: 0
    bit_size: 1
    array:
      len: 16
      stride: 1
    enum: BRR_BR
fieldset/BSRR:
  description: Port bit set/reset register (GPIOn_BSRR).
  fields:
  - name: BS
    description: Set bit %s.
    bit_offset: 0
    bit_size: 1
    array:
      len: 16
      stride: 1
    enum: BS
  - name: BR
    description: Reset bit %s.
    bit_offset: 16
    bit_size: 1
    array:
      len: 16
      stride: 1
    enum: BSRR_BR
fieldset/CRH:
  description: Port configuration register high (GPIOn_CRL).
  fields: []
fieldset/CRL:
  description: Port configuration register low (GPIOn_CRL).
  fields:
  - name: MODE
    description: Port n.%s mode bits.
    bit_offset: 0
    bit_size: 2
    array:
      len: 8
      stride: 4
    enum: MODE
  - name: CNF
    description: Port n.%s configuration bits.
    bit_offset: 2
    bit_size: 2
    array:
      len: 8
      stride: 4
    enum: CNF
fieldset/IDR:
  description: Port input data register (GPIOn_IDR).
  fields:
  - name: IDR
    description: Port input data.
    bit_offset: 0
    bit_size: 1
    array:
      len: 16
      stride: 1
    enum: IDR
fieldset/LCKR:
  description: Port configuration lock register.
  fields:
  - name: LCK
    description: Port A Lock bit %s.
    bit_offset: 0
    bit_size: 1
    array:
      len: 16
      stride: 1
    enum: LCK
  - name: LCKK
    description: Lock key.
    bit_offset: 16
    bit_size: 1
    enum: LCKK
fieldset/ODR:
  description: Port output data register (GPIOn_ODR).
  fields:
  - name: ODR
    description: Port output data.
    bit_offset: 0
    bit_size: 1
    array:
      len: 16
      stride: 1
    enum: ODR
enum/BRR_BR:
  bit_size: 1
  variants:
  - name: NoAction
    description: No action on the corresponding ODx bit.
    value: 0
  - name: Reset
    description: Reset the ODx bit.
    value: 1
enum/BS:
  bit_size: 1
  variants:
  - name: Set
    description: Sets the corresponding ODRx bit.
    value: 1
enum/BSRR_BR:
  bit_size: 1
  variants:
  - name: Reset
    description: Resets the corresponding ODRx bit.
    value: 1
enum/CNF:
  bit_size: 2
  variants:
  - name: PushPull
    description: Analog mode / Push-Pull mode.
    value: 0
  - name: OpenDrain
    description: Floating input (reset state) / Open Drain-Mode.
    value: 1
  - name: AltPushPull
    description: Input with pull-up/pull-down / Alternate Function Push-Pull Mode.
    value: 2
  - name: AltOpenDrain
    description: Alternate Function Open-Drain Mode.
    value: 3
enum/IDR:
  bit_size: 1
  variants:
  - name: Low
    description: Input is logic low.
    value: 0
  - name: High
    description: Input is logic high.
    value: 1
enum/LCK:
  bit_size: 1
  variants:
  - name: Unlocked
    description: Port configuration not locked.
    value: 0
  - name: Locked
    description: Port configuration locked.
    value: 1
enum/LCKK:
  bit_size: 1
  variants:
  - name: NotActive
    description: Port configuration lock key not active.
    value: 0
  - name: Active
    description: Port configuration lock key active.
    value: 1
enum/MODE:
  bit_size: 2
  variants:
  - name: Input
    description: Input mode (reset state).
    value: 0
  - name: Output
    description: Output mode 10 MHz.
    value: 1
  - name: Output2
    description: Output mode 2 MHz.
    value: 2
  - name: Output50
    description: Output mode 50 MHz.
    value: 3
enum/ODR:
  bit_size: 1
  variants:
  - name: Low
    description: Set output to logic low.
    value: 0
  - name: High
    description: Set output to logic high.
    value: 1