NXP JN516X (TWELITE) をプログラミングする（CLOCK)

システムクロックや32KHzクロックを変更したり現在のクロック情報を取得できる。起動時はXTALクロック(16MHz)で1-32MHzの間でＣＰＵクロックを変更することができペリフェラルクロックは16MHz固定である。高速RCクロック(27MHz)では0.84-27MHzの範囲でＣＰＵクロックを変更することができペリフェラルクロックは13.5MHz固定となる。

【ライブラリ】

/*
  clock.h - Clock Library for XNP-JN516x

  Copyright (c) 2022 Sasapea's Lab. All right reserved.

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General
  Public License along with this library; if not, write to the
  Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  Boston, MA  02111-1307  USA
*/
#pragma once

#include <jendefs.h>
#include <AppHardwareApi.h>

/*
   I/O Ports

    External RC  : DIO9
    External XTAL: DIO9 and DIO10
*/

class Clock
{
  public:

    typedef enum
    {
      EXT32KSRC_RC   = E_AHI_EXTERNAL_RC, // external RC
      EXT32KSRC_XTAL = E_AHI_XTAL,        // external crystal
    } EXT32KSRC;

    static
    bool external32K(EXT32KSRC clksrc)
    {
      return bAHI_Set32KhzClockMode(clksrc);
    }

    static
    void external32KXtal(void)
    {
      vAHI_Init32KhzXtal();
    }

    typedef enum
    {
      EXT32KRC_530nA = 2, // +-300ppm (default)
      EXT32KRC_350nA = 3, // +-600ppm
    } EXT32KRC;

    static
    void external32KRC(EXT32KRC trim)
    {
      vAHI_Trim32KhzRC(trim);
    }

    typedef enum
    {
      CLKSRC_XTAL = E_AHI_XTAL_ON,
      CLKSRC_RC   = E_AHI_XTAL_OFF,
    } CLKSRC;

    static
    void source(CLKSRC clksrc, bool powerdown = false)
    {
      return vAHI_SelectClockSource(clksrc, powerdown);
    }

    static
    CLKSRC source(void)
    {
      return (CLKSRC)bAHI_GetClkSource();
    }

    typedef enum
    {
      //                           32MHz (27MHz)
      CLKDIV8  = E_AHI_XTAL_4MHZ,  //  4 ( 3.38) MHz
      CLKDIV4  = E_AHI_XTAL_8MHZ,  //  8 ( 6.75) MHz
      CLKDIV2  = E_AHI_XTAL_16MHZ, // 16 (13.5 ) MHz
      CLKDIV1  = E_AHI_XTAL_32MHZ, // 32 (27   ) MHz
      CLKDIV32 = E_AHI_XTAL_1MHZ,  //  1 ( 0.84) MHz
      CLKDIV16 = E_AHI_XTAL_2MHZ,  //  2 ( 1.69) MHz
    } CLKDIV;

    static
    bool rate(CLKDIV clkdiv)
    {
      return bAHI_SetClockRate(clkdiv);
    }

    static
    CLKDIV rate(void)
    {
      return (CLKDIV)u8AHI_GetSystemClkRate();
    }

    static
    bool external32MXtal(void)
    {
      return bAHI_Clock32MHzStable();
    }

    typedef enum
    {
      XTALPULL_NONE = E_AHI_XTAL_PULL_NONE,  // No additional crystal load capacitance (default)
      XTALPULL_50   = E_AHI_XTAL_PULL_50PC,  // 1pF
      XTALPULL_100  = E_AHI_XTAL_PULL_100PC, // 2pF
    } XTALPULL;

    static
    void xtalPull(XTALPULL mode)
    {
      vAHI_ClockXtalPull(mode);
    }

    static
    void fastStartUp(bool automatic, bool powerdown)
    {
      vAHI_EnableFastStartUp(automatic, powerdown);
    }

    static
    bool internal32MRC(void)
    {
      return bAHI_TrimHighSpeedRCOsc();
    }

    static
    void optimizeWaitStates(void)
    {
      return vAHI_OptimiseWaitStates();
    }
};

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

clock.h - Clock Library for XNP-JN516x

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Lesser General Public

License as published by the Free Software Foundation; either

version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General

Public License along with this library; if not, write to the

Free Software Foundation, Inc., 59 Temple Place, Suite 330,

Boston, MA 02111-1307 USA

#pragma once

#include <jendefs.h>

#include <AppHardwareApi.h>

I/O Ports

External RC : DIO9

External XTAL: DIO9 and DIO10

class Clock

{

public:

typedef enum

{

EXT32KSRC_RC = E_AHI_EXTERNAL_RC, // external RC

EXT32KSRC_XTAL = E_AHI_XTAL, // external crystal

} EXT32KSRC;

static

bool external32K(EXT32KSRC clksrc)

{

return bAHI_Set32KhzClockMode(clksrc);

}

static

void external32KXtal(void)

{

vAHI_Init32KhzXtal();

}

typedef enum

{

EXT32KRC_530nA = 2, // +-300ppm (default)

EXT32KRC_350nA = 3, // +-600ppm

} EXT32KRC;

static

void external32KRC(EXT32KRC trim)

{

vAHI_Trim32KhzRC(trim);

}

typedef enum

{

CLKSRC_XTAL = E_AHI_XTAL_ON,

CLKSRC_RC = E_AHI_XTAL_OFF,

} CLKSRC;

static

void source(CLKSRC clksrc, bool powerdown = false)

{

return vAHI_SelectClockSource(clksrc, powerdown);

}

static

CLKSRC source(void)

{

return (CLKSRC)bAHI_GetClkSource();

}

typedef enum

{

// 32MHz (27MHz)

CLKDIV8 = E_AHI_XTAL_4MHZ, // 4 ( 3.38) MHz

CLKDIV4 = E_AHI_XTAL_8MHZ, // 8 ( 6.75) MHz

CLKDIV2 = E_AHI_XTAL_16MHZ, // 16 (13.5 ) MHz

CLKDIV1 = E_AHI_XTAL_32MHZ, // 32 (27 ) MHz

CLKDIV32 = E_AHI_XTAL_1MHZ, // 1 ( 0.84) MHz

CLKDIV16 = E_AHI_XTAL_2MHZ, // 2 ( 1.69) MHz

} CLKDIV;

static

bool rate(CLKDIV clkdiv)

{

return bAHI_SetClockRate(clkdiv);

}

static

CLKDIV rate(void)

{

return (CLKDIV)u8AHI_GetSystemClkRate();

}

static

bool external32MXtal(void)

{

return bAHI_Clock32MHzStable();

}

typedef enum

{

XTALPULL_NONE = E_AHI_XTAL_PULL_NONE, // No additional crystal load capacitance (default)

XTALPULL_50 = E_AHI_XTAL_PULL_50PC, // 1pF

XTALPULL_100 = E_AHI_XTAL_PULL_100PC, // 2pF

} XTALPULL;

static

void xtalPull(XTALPULL mode)

{

vAHI_ClockXtalPull(mode);

}

static

void fastStartUp(bool automatic, bool powerdown)

{

vAHI_EnableFastStartUp(automatic, powerdown);

}

static

bool internal32MRC(void)

{

return bAHI_TrimHighSpeedRCOsc();

}

static

void optimizeWaitStates(void)

{

return vAHI_OptimiseWaitStates();

}

};

次回は、Brownoutの予定。

コメントを残す コメントをキャンセル

コメントを残すコメントをキャンセル