gpio

const (
	BSR_NOACTION bsrrState = 0b00 // No action on the corresponding ODRx bit
	BSR_ACTION   bsrrState = 0b01 // Set/Reset the corresponding ODRx bit
)

const (
	MODE_INPUT  modeState = 0b00 // Input (reset state)
	MODE_OUTPUT modeState = 0b01 // General purpose output mode
	MODE_ALTFUN modeState = 0b10 // Alternate function mode
	MODE_ANALOG modeState = 0b11 // Analog mode
)

const (
	MODER_RESET_A uint32 = 0xA800_0000
	MODER_RESET_B uint32 = 0x0280
	MODER_RESET   uint32 = 0
)

const (
	OSPEED_LOW      ospeedrState = 0b00 // Low speed
	OSPEED_MEDIUM   ospeedrState = 0b01 // Medium speed
	OSPEED_HIGH     ospeedrState = 0b10 // High speed
	OSPEED_VERYHIGH ospeedrState = 0b11 // Very high speed
)

const (
	OSPEEDR_RESET_A uint32 = 0x0C00_0000
	OSPEEDR_RESET_B uint32 = 0x00C0
	OSPEEDR_RESET   uint32 = 0
)

const (
	OTYPE_PUSHPULL  otyperState = 0b00 // Output push-pull (reset state)
	OTYPE_OPENDRAIN otyperState = 0b01 // Output open-drain
)

const (
	BASE_ADDRESS_PORT_A uint32 = 0x4002_0000
	BASE_ADDRESS_PORT_B uint32 = 0x4002_0400
	BASE_ADDRESS_PORT_C uint32 = 0x4002_0800
	BASE_ADDRESS_PORT_D uint32 = 0x4002_0C00
	BASE_ADDRESS_PORT_E uint32 = 0x4002_1000
	BASE_ADDRESS_PORT_F uint32 = 0x4002_1400
	BASE_ADDRESS_PORT_G uint32 = 0x4002_1800
	BASE_ADDRESS_PORT_H uint32 = 0x4002_1C00
	BASE_ADDRESS_PORT_I uint32 = 0x4002_2000
	BASE_ADDRESS_PORT_J uint32 = 0x4002_2400
	BASE_ADDRESS_PORT_K uint32 = 0x4002_2800
)

const (
	PUPD_NOPULLUP pupdrState = 0b00 // No pull-up, pull-down
	PUPD_PULLUP   pupdrState = 0b01 // Pull-up
	PUPD_PULLDOWN pupdrState = 0b10 // Pull-down
	PUPD_RESERVED pupdrState = 0b11 // Reserved
)

const (
	PUPDR_RESET_A uint32 = 0x6400_0000
	PUPDR_RESET_B uint32 = 0x0100
	PUPDR_RESET   uint32 = 0
)

const AFR_RESET uint32 = 0

const BSRR_RESET uint32 = 0

const IDR_RESET uint32 = 0

const LCKR_RESET uint32 = 0

const MODE_PIN_SIZE uint8 = 2

const ODR_RESET uint32 = 0

const OSPEED_PIN_SIZE uint8 = 2

const OTYPER_RESET uint32 = 0

const PUPDR_PIN_SIZE uint8 = 2