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K64 的port寄存器中typedef struct { __IO uint32_t PCR[32]; /**< Pin Control Register n, array offset: 0x0, array step: 0x4 */
__O uint32_t GPCLR; /**< Global Pin Control Low Register, offset: 0x80 */
__O uint32_t GPCHR; /**< Global Pin Control High Register, offset: 0x84 */
uint8_t RESERVED_0[24];
__IO uint32_t ISFR; /**< Interrupt Status Flag Register, offset: 0xA0 */
uint8_t RESERVED_1[28];
__IO uint32_t DFER; /**< Digital Filter Enable Register, offset: 0xC0 */
__IO uint32_t DFCR; /**< Digital Filter Clock Register, offset: 0xC4 */
__IO uint32_t DFWR; /**< Digital Filter Width Register, offset: 0xC8 */
} PORT_Type;
GPCLR;
GPCHR; 这两个寄存器的含义是什么,看不懂,能否解释一下,谢谢!
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