clock.h

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/********************************************************************************************************
 * @file     clock.h 
 *
 * @brief    This is the header file for TLSR8258
 *
 * @author   Driver Group
 * @date     May 8, 2018
 *
 * @par      Copyright (c) 2018, Telink Semiconductor (Shanghai) Co., Ltd.
 *           All rights reserved.
 *
 *           The information contained herein is confidential property of Telink
 *           Semiconductor (Shanghai) Co., Ltd. and is available under the terms
 *           of Commercial License Agreement between Telink Semiconductor (Shanghai)
 *           Co., Ltd. and the licensee or the terms described here-in. This heading
 *           MUST NOT be removed from this file.
 *
 *           Licensees are granted free, non-transferable use of the information in this
 *           file under Mutual Non-Disclosure Agreement. NO WARRENTY of ANY KIND is provided.
 * @par      History:
 *           1.initial release(DEC. 26 2018)
 *
 * @version  A001
 *
 *******************************************************************************************************/

#pragma once


#include "compiler.h"
#include "register.h"


#define     _ASM_NOP_           asm("tnop")

#define     CLOCK_DLY_1_CYC    _ASM_NOP_
#define     CLOCK_DLY_2_CYC    _ASM_NOP_;_ASM_NOP_
#define     CLOCK_DLY_3_CYC    _ASM_NOP_;_ASM_NOP_;_ASM_NOP_
#define     CLOCK_DLY_4_CYC    _ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_
#define     CLOCK_DLY_5_CYC    _ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_
#define     CLOCK_DLY_6_CYC    _ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_
#define     CLOCK_DLY_7_CYC    _ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_
#define     CLOCK_DLY_8_CYC    _ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_
#define     CLOCK_DLY_9_CYC    _ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_
#define     CLOCK_DLY_10_CYC   _ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_;_ASM_NOP_

#ifndef SYSCLK_RC_CLOCK_EN
#define SYSCLK_RC_CLOCK_EN          0
#endif

extern unsigned char system_clk_type;

typedef enum{
    SYS_CLK_12M_Crystal = 0x44,
    SYS_CLK_16M_Crystal = 0x43,
    SYS_CLK_24M_Crystal = 0x42,
    SYS_CLK_32M_Crystal = 0x60,
    SYS_CLK_48M_Crystal = 0x20,

    SYS_CLK_RC_THRES = 0x10,

    SYS_CLK_24M_RC   = 0x00,
    SYS_CLK_32M_RC   = 0x01,
    SYS_CLK_48M_RC   = 0x02,
}SYS_CLK_TypeDef;

typedef enum{
    CLK_32K_RC   =0,
    CLK_32K_XTAL =1,
}CLK_32K_TypeDef;

void clock_init(SYS_CLK_TypeDef SYS_CLK);

static inline int clock_get_system_clk(void)
{
    return system_clk_type;
}

void clock_32k_init (CLK_32K_TypeDef src);

void rc_24m_cal (void);

void rc_48m_cal (void);

void rc_32k_cal (void);

void doubler_calibration(void);