hal.c

来自「ucos在NEC平台下的移植」· C语言 代码 · 共 90 行

#pragma	DI
#pragma	EI
#pragma	SFR
#pragma NOP
#pragma STOP
#pragma HALT
///#pragma	section	@@DATA	IXDATA
#include "mac_headers.h"


//-------------------------------------------------------------------------------------------------------
//	void halWait(UINT16 timeout)
//
//	DESCRIPTION:
//		Runs an idle loop for [timeout] microseconds.
//
//  ARGUMENTS:
//      UINT16 timeout
//          The timeout in microseconds
//-------------------------------------------------------------------------------------------------------
void halWait(UINT16 timeout) {

    // This sequence uses exactly 8 clock cycle for each round
    do {
        NOP();
        NOP();
        NOP();///
        NOP();///
    } while (--timeout);

} // halWait



//-------------------------------------------------------------------------------------------------------
//  void rfWaitForCrystalOscillator(void)
//
//  DESCRIPTION:
//      Waits for the crystal oscillator to become stable. The flag is polled via the SPI status byte.
//      
//      Note that this function will lock up if the SXOSCON command strobe has not been given before the
//      function call. Also note that global interrupts will always be enabled when this function 
//      returns.
//-------------------------------------------------------------------------------------------------------
void halRfWaitForCrystalOscillator(void) {
    BYTE spiStatusByte;

    // Poll the SPI status byte until the crystal oscillator is stable
    do {
        DISABLE_GLOBAL_INT();
        FASTSPI_UPD_STATUS(spiStatusByte);
        ENABLE_GLOBAL_INT();
    } while (!(spiStatusByte & CC2420_XOSC16M_STABLE_BM));

} // halRfWaitForCrystalOscillator

//-------------------------------------------------------------------------------------------------------
//  void halWriteAdress(BYTE *pData)
//
//  DESCRIPTION:
//	Writes address into FLASH memory
//
//  ARGUMENTS:
//      BYTE *pData
//          A pointer to the write buffer
//-------------------------------------------------------------------------------------------------------
void halWriteAddress(BYTE *pData){



}



//-------------------------------------------------------------------------------------------------------
//  halReadAdress(BYTE *pData)
//
//  DESCRIPTION:
//      Reads address from FLASH
//
//  ARGUMENTS:
//      BYTE *pData
//          A pointer to the read buffer
//-------------------------------------------------------------------------------------------------------
void halReadAddress(BYTE *pData){

}