clockhardware.h

来自「一个基于windows mobile 的GPS 接受IC 驱动程序。」· C头文件 代码 · 共 43 行

#ifndef CLOCK_HARDWARE_H__          // {
#define CLOCK_HARDWARE_H__

//-----------------------------------------------------------------------------
//  SSP Clock enables.  See table 3-33 on page 3-98
//  See page 3-105 for the register summary.
//-----------------------------------------------------------------------------

#define BULVERDE_CLOCK_EN_REG 0x41300000

struct BULVERDE_CLOCK_CONTROL
{
    DWORD CCCR;
    DWORD CKEN;
    DWORD OSCC;
    DWORD CCSR;
};

extern volatile BULVERDE_CLOCK_CONTROL* pSpiClock;

enum
{
    CLOCK_ENABLE_SSP1 = BIT(23),
    CLOCK_ENABLE_SSP2 = BIT(3),
    CLOCK_ENABLE_SSP3 = BIT(4)
};

inline void
clockSsp3Enable(void)
{
    // TODO - add protection later...
    pSpiClock->CKEN |= CLOCK_ENABLE_SSP3;
}

inline void
clockSsp3Disable(void)
{
    // TODO - add protection later...
    pSpiClock->CKEN &= ~CLOCK_ENABLE_SSP3;
}

#endif