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STM32F4Dis_Peripherals_GPIO (Registers (Config registers (OTYPER, OSPEED:…
STM32F4Dis_Peripherals_GPIO
Registers
Set/Reset registers
BSRR
Config registers
OTYPER, OSPEED: type & speed of output
PUPD: select pull up/down for input/output
MODER: select input/output/analog/alt func mode
Alternate function registers
AFRL, AFRH
Locking register
LCKR: lock control and alt func registers
Data registers
IDR (input data), ODR (output data)
Register read/write access
Write-only: BSRR
Read/Write: remaining
Read-only: IDR
5-volt tolerant
Schmitt trigger