timer_types.h

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#ifndef __TIMER_TYPES_H
#define __TIMER_TYPES_H
 
#include "types.h"
#include <stdint.h>
 
#define MR_COUNT 4
 
typedef enum
{
    TIM_0 = 0,
    TIM_1,
    TIM_2,
    TIM_3,
    TIM_COUNT
} TIMER_Which;
 
typedef enum
{
    TIM_MR0 = 0,
    TIM_MR1,
    TIM_MR2,
    TIM_MR3,
    TIM_MR_COUNT
} TIMER_MRWhich;
 
typedef enum
{
    TIM_MR_NOP = 0,
    TIM_MR_INT = 1 << 0,
    TIM_MR_RES = 1 << 1,
    TIM_MR_STP = 1 << 2
} TIMER_MRAction;
 
typedef struct
{
    u8 which;
    u32 match;
    u8 actions;
} TIMER_MatchRegister;
 
typedef struct
{
    u8 which;
    u32 prescaler;
    // Future: implement Capture registers & CCR
    // Future: implement EMR
} TIMER;
 
// INTERRUPTS
 
// Refer to Table 426 in the manual for more info.
typedef enum
{
    TIM_INT_SRC_MR0 = 0, // Bit 0, MR0
    TIM_INT_SRC_MR1,     // Bit 1, MR1
    TIM_INT_SRC_MR2,
    TIM_INT_SRC_MR3,
 
    // Unsupported, Capture channels
    // TIM_INT_SRC_CR0 = 0x10,
    // TIM_INT_SRC_CR1 = 0x20
    TIM_INT_SRC_COUNT
} TIMER_InterruptSource;
 
// Interrupt handler function pointer
typedef void (*TIMER_InterruptHandler)(void);
 
#endif