81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
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#ifndef _EXTI_H
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#define _EXTI_H
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#include <stdint.h>
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#include "plf.h"
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#include "driver_iomux.h"
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enum ext_int_type_t
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{
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EXT_INT_TYPE_LOW,
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EXT_INT_TYPE_HIGH,
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EXT_INT_TYPE_POS,
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EXT_INT_TYPE_NEG,
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};
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struct exti_ctrl_t //EXTINTCTL. 0x14
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{
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uint32_t pa_exti_en: 8; //exti intr connect to gpio PA ctrl
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uint32_t pb_exti_en: 8; //exti intr connect to gpio PB ctrl
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uint32_t resv: 16;
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};
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struct exti_status_t //EXTINTSTS 0x18
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{
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uint32_t pa_exti_sts: 8; //PA exti intr status
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uint32_t pb_exti_sts: 8; //PB exti intr status
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uint32_t resv: 16;
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};
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struct exti_type_t //EXTINTTYPE offset@0x1C
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{
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uint32_t pa0_exti_type: 2; //external intr source sel.
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uint32_t pa1_exti_type: 2; //external intr source sel.
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uint32_t pa2_exti_type: 2; //external intr source sel.
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uint32_t pa3_exti_type: 2; //external intr source sel.
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uint32_t pa4_exti_type: 2; //external intr source sel.
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uint32_t pa5_exti_type: 2; //external intr source sel.
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uint32_t pa6_exti_type: 2; //external intr source sel.
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uint32_t pa7_exti_type: 2; //external intr source sel.
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uint32_t pb0_exti_type: 2; //external intr source sel.
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uint32_t pb1_exti_type: 2; //external intr source sel.
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uint32_t pb2_exti_type: 2; //external intr source sel.
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uint32_t pb3_exti_type: 2; //external intr source sel.
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uint32_t pb4_exti_type: 2; //external intr source sel.
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uint32_t pb5_exti_type: 2; //external intr source sel.
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uint32_t pb6_exti_type: 2; //external intr source sel.
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uint32_t pb7_exti_type: 2; //external intr source sel.
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};
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struct exti_cnt_t //EXTINTCNT00 offset:0x20
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{
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uint32_t pre_cnt: 12; //Precaler Value: set the external interrupt source 0 CNT_CLK: CNT_CLK=PCLK/(1+ Precaler Value)
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uint32_t des_cnt: 4; //Counter Value. (only useful for level trigger mode)
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uint32_t resv: 16;
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};
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struct exti_reg_t
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{
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struct exti_ctrl_t exti_ctrl; //EXTINTCTL. 0x14
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struct exti_status_t exti_sts; //EXTINTSTS 0x18
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struct exti_type_t exti_type; //EXTINTTYPE offset@0x1C
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struct exti_cnt_t exti_cnt[16]; //EXTINTCNT00~EXTINTCNT15 offset:0x20~0x
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};
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extern volatile struct exti_reg_t *extiAB_regs;
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extern volatile struct exti_reg_t *extiCD_regs;
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extern volatile struct exti_reg_t *extiEF_regs;
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extern volatile struct exti_reg_t *extiGH_regs;
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void exti_enable(enum system_port_t port,enum system_port_bit_t bit);
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void exti_disable(enum system_port_t port,enum system_port_bit_t bit);
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uint8_t exti_get_src(enum system_port_t port);
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void exti_intr_clr(enum system_port_t port,uint8_t bits);
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void exti_set_type(enum system_port_t port,enum system_port_bit_t bit, enum ext_int_type_t type);
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void exti_set_debounce_cnt(enum system_port_t port,enum system_port_bit_t bit, uint32_t clk, uint8_t cnt);
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#endif //_EXTI_H
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