hardware.c

来自「STM8全部资料」· C语言 代码 · 共 23 行

//--------------------------------------------------hardware.c
//-------------------------------------INCLUDE
#include "hardware.h"

//----------------------------initial gpio
void GPIO_init(void)
{
    PE_DDR=0X07;
    PE_CR1=0X07;
    PE_CR2=0X00;
}

//--------------------------clk initial
void CLK_init(void)
{
    CLK_ECKR |=0X1;  	      //开启外部时钟 
    while(!(CLK_ECKR&0X2));   //等待外部时钟rdy 
    CLK_CKDIVR &= 0XF9;       //CPU 2分频 
    CLK_SWR = 0XB4;  	      //选择外部时钟 
    while(!(CLK_SWCR&0X8));   //这里要等 
    CLK_SWCR |=0X2;  	      //使能外部时钟 
}