hal_mcu.c

cc2x30_sw_examples: 适用于SmartRF05EB 支持CC2430、CC2530 提供Light_Switch及perTest例程。

/*******************************************************************************
  Filename:     hal_mcu.c

  Description:  hal mcu library

*******************************************************************************/


#include "hal_types.h"
#include "hal_mcu.h"

#include "clock.h"

/*******************************************************************************
* @fn          halMcuInit
*
* @brief       Set system clock
*
* @param       none
*
* @return      none
*/
void halMcuInit(void)
{
    clockSetMainSrc(CLOCK_SRC_XOSC);
}


/*******************************************************************************
* @fn          halMcuWaitUs
*
* @brief       Busy wait function. Waits the specified number of microseconds. Use
*              assumptions about number of clock cycles needed for the various
*              instructions. The duration of one cycle depends on MCLK. In this HAL
*              , it is set to 8 MHz, thus 8 cycles per usec.
*
*              NB! This function is highly dependent on architecture and compiler!
*
* @param       uint16 usec - number of microseconds delay
*
* @return      none
*/
void halMcuWaitUs(uint16 usec)
{
    while(usec--)
    {
        asm("nop");
        asm("nop");
        asm("nop");
        asm("nop");
        asm("nop");
        asm("nop");
        asm("nop");
        asm("nop");
        asm("nop");
        asm("nop");
    }
}

/*******************************************************************************
* @fn          halMcuWaitMs
*
* @brief       Busy wait function. Waits the specified number of milliseconds. Use
*              assumptions about number of clock cycles needed for the various
*              instructions.
*
*              NB! This function is highly dependent on architecture and compiler!
*
* @param       uint16 millisec - number of milliseconds delay
*
* @return      none
*/
void halMcuWaitMs(uint16 msec)
{
    while(msec--)
        halMcuWaitUs(1000);
}

/*******************************************************************************
* @fn          halMcuSetLowPowerMode
*
* @brief      Sets the MCU in a low power mode. Will turn global interrupts on at
*             the same time as entering the LPM mode. The MCU must be waken from
*             an interrupt (status register on stack must be modified).
*
*              NB! This function is highly dependent on architecture and compiler!
*
* @param       uint8 mode - power mode
*
* @return      none
*/
void halMcuSetLowPowerMode(uint8 mode)
{
  // comment: not yet implemented
  //HAL_ASSERT(FALSE);
}


/******************************************************************************
* @fn  halMcuReset
*
* @brief
* Resets the MCU. This utilize the watchdog timer as there is no other way
* for a software reset. The reset will not occur until ~2 ms.
* NB: The function will not return! (hangs until reset)
*
* Parameters:
*
* @param  void
*
* @return void
*
******************************************************************************/
void halMcuReset(void)
{
    const uint8 WDT_INTERVAL_MSEC_2=   0x03;   // after ~2 ms

    WDCTL = ((WDCTL & 0xFC) | (WDT_INTERVAL_MSEC_2 & 0x03));
    // Start watchdog
    WDCTL &= ~0x04;     // Select watchdog mode
    WDCTL |= 0x08;      // Enable timer
    while(1);                                   // Halt here until reset
}

/*------------------------------------------------------------------------------
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								(	)	  ) /                                      
								 \ (	 (_/                                       
								  \_)		 Modify By:cuiqingwei [gary]                  
------------------------------------------------------------------------------*/