init430.c

来自「一个基于AD9954的430单片机编程」· C语言 代码 · 共 41 行

#include  "includes.h"

/*--------------------------------------------------------------------------------------------------
功能：初始化看门狗
入口：无
出口：无
--------------------------------------------------------------------------------------------------*/
void InitWDT()
{
  WDTCTL = WDTPW + WDTHOLD;       // stop watchdog timer
}

/*--------------------------------------------------------------------------------------------------
功能：初始化系统时钟
入口：无
出口：无
--------------------------------------------------------------------------------------------------*/
void InitCLK()
{
  SCFI0 |= FN_4;                  // x2 DCO frequency, 8MHz nominal DCO
  SCFQCTL = 121;                  // (121+1) x 32768 x 2 = 7.99 Mhz
  FLL_CTL0 = DCOPLUS + XCAP18PF;  // DCO+ set so freq = xtal x D x N+1
//  FLL_CTL1 &= ~XT2OFF;            //启用XT2
  FLL_CTL1 |= SELS;               //SMCLK=XT2
//  P1SEL|=BIT4;
//  P1DIR|=BIT4;
}

/*--------------------------------------------------------------------------------------------------
功能：初始化430
入口：无
出口：无
--------------------------------------------------------------------------------------------------*/
void Init430(void)
{
  InitWDT();
  InitCLK();
}