#ifndef _BSP_TIMER_H
#define _BSP_TIMER_H

#include <stdint.h>

typedef struct __attribute((__packed__)) {
    volatile uint32_t mtime;     // 0x0:0
    volatile uint32_t mtimeh;    // 0x4:0
    volatile uint32_t mtimecmp;  // 0x8:0
    volatile uint32_t mtimecmph; // 0xc:0
} mtimer_t;

#ifndef APB_BUS
typedef struct __attribute((__packed__)) {
    volatile uint16_t count;
} prescaler_t;

typedef struct __attribute((__packed__)) {
    volatile uint16_t clk_en;      // 0x0:0, 0->always, 1->prescaler
    volatile uint16_t clr_en;      // 0x2:0, 0->on overflow
    volatile uint32_t limit;       // 0x4:0, upper limit of counter
    volatile uint32_t timer_value; // 0x8:0 current timer value
} timer_a_t;

#else

typedef struct __attribute((__packed__)) {
  volatile uint32_t LIMIT;
} prescaler_t;

typedef struct __attribute((__packed__)) {
  volatile uint32_t CLEARS_TICKS;   // 0x0/0:0->always, 1->prescaler; 16:0->on overflow
  volatile uint32_t LIMIT;          // 0x4/0 upper limit of counter
  volatile uint32_t VALUE;          // 0x8/0 current timer value
} timer_a_t;

inline void prescaler_init(prescaler_t* reg){
    (void)reg;
}

inline void timer_init(timer_a_t *reg){
    reg->CLEARS_TICKS  = 0;
    reg->VALUE = 0;
}

inline void mtimer_init(mtimer_t *reg){
    reg->mtimecmph  = UINT32_MAX;
    reg->mtimecmp = UINT32_MAX;
}

#endif
#endif /* _BSP_TIMER_H */