nk1628_drv.c

来自「在ARM7和UC/OSII的平台上实现了GPS自动报站的功能,涉及GPS模块LE」· C语言 代码 · 共 113 行

/****************************************************************
**                                                              *
**  FILE         : NK1628_drv.c                                 *
**                                                              *
**  By : Cyb 2007.07.01                                         *
****************************************************************/

#define  NK1628DRV_GLOBALS
#include "includes.h"
#include "hardware.h"
#include "NK1628_drv.h"


static void Nop(INT8U nums)
{
    INT8U i;
     
    for( i = 0; i<nums; i++)
    {
        __asm
        {
           NOP
         }   
    }
}


void InitNKContrPins(void)
{
    Init_PIN_NK_STB();
    Init_PIN_NK_CLK();
    Init_PIN_NK_DIN();
    SET_PIN_NK_STB();
    SET_PIN_NK_CLK();
     
}

void NKComStart(void)
{
    
    Nop(15);   
    CLEAR_PIN_NK_STB();
    Nop(5);

}

void NKComStop(void)
{
    SET_PIN_NK_STB();
}

void wrbyte(INT8U data)
{
   INT8U i;
   
   CLEAR_PIN_NK_CLK();
   Nop(3);
   for(i=0; i<8; i++)
   {
      if(data & 0x01)
      {
         SET_PIN_NK_DIN(); 
      }
      else
      {
         CLEAR_PIN_NK_DIN(); 
      }
      Nop(2);
      SET_PIN_NK_CLK();
      Nop(6);
      CLEAR_PIN_NK_CLK();
      Nop(2);
      data = data >> 1;
   
   }
   
   Nop(15);   
}


void SetWorkMode(INT8U dispmode,INT8U datamode)
{
    NKComStart();
    wrbyte(dispmode);
    NKComStop();
    NKComStart();
    wrbyte(datamode);
    NKComStop();
}

void SendData(INT8U addrsetmode,INT8U addr, INT8U data)
{
   
    NKComStart();
   
    wrbyte(addrsetmode|addr);
    
    wrbyte(data);

    NKComStop();
    
}

void DispControl(INT8U sts )
{
    NKComStart();
    wrbyte(sts);
    NKComStop();
}