Module stm32mp1::stm32mp157::gpiob::gpiob_lckr
source · [−]Expand description
This register is used to lock the configuration of the port bits when a correct write sequence is applied to bit 16 (LCKK). The value of bits [15:0] is used to lock the configuration of the GPIO. During the write sequence, the value of LCKR[15:0] must not change. When the LOCK sequence has been applied on a port bit, the value of this port bit can no longer be modified until the next MCU reset or peripheral reset. A specific write sequence is used to write to the GPIOx_LCKR register. Only word access (32-bit long) is allowed during this locking sequence. Each lock bit freezes a specific configuration register (control and alternate function registers).
Structs
This register is used to lock the configuration of the port bits when a correct write sequence is applied to bit 16 (LCKK). The value of bits [15:0] is used to lock the configuration of the GPIO. During the write sequence, the value of LCKR[15:0] must not change. When the LOCK sequence has been applied on a port bit, the value of this port bit can no longer be modified until the next MCU reset or peripheral reset. A specific write sequence is used to write to the GPIOx_LCKR register. Only word access (32-bit long) is allowed during this locking sequence. Each lock bit freezes a specific configuration register (control and alternate function registers).
Register GPIOB_LCKR
reader
Register GPIOB_LCKR
writer
Type Definitions
Field LCK0
reader - LCK0
Field LCK0
writer - LCK0
Field LCK1
reader - LCK1
Field LCK1
writer - LCK1
Field LCK2
reader - LCK2
Field LCK2
writer - LCK2
Field LCK3
reader - LCK3
Field LCK3
writer - LCK3
Field LCK4
reader - LCK4
Field LCK4
writer - LCK4
Field LCK5
reader - LCK5
Field LCK5
writer - LCK5
Field LCK6
reader - LCK6
Field LCK6
writer - LCK6
Field LCK7
reader - LCK7
Field LCK7
writer - LCK7
Field LCK8
reader - LCK8
Field LCK8
writer - LCK8
Field LCK9
reader - LCK9
Field LCK9
writer - LCK9
Field LCK10
reader - LCK10
Field LCK10
writer - LCK10
Field LCK11
reader - LCK11
Field LCK11
writer - LCK11
Field LCK12
reader - LCK12
Field LCK12
writer - LCK12
Field LCK13
reader - LCK13
Field LCK13
writer - LCK13
Field LCK14
reader - LCK14
Field LCK14
writer - LCK14
Field LCK15
reader - LCK15
Field LCK15
writer - LCK15
Field LCKK
reader - LCKK
Field LCKK
writer - LCKK