AI8H1K08 自己定义的内部时钟源测试一直不准

huatl*** · 发表于 2024-9-26 16:05:51

本帖最后由 DebugLab 于 2024-9-26 16:21 编辑

想请假下，为什么我自己定义的内部时钟源24M 一直不准
#include "STC8Hxxx.h"    //包含此头文件后，不需要再包含"reg51.h"头文件
#include "test.h"

#define    MAIN_Fosc    24000000L //定义主时钟

/*************  功能说明 **************
程序使用
AIN1-P1.1
AIN2-P1.2
BIN1-P1.5
BIN2-P3.4
驱动步进电机
******************************************/
#include "intrins.h"

sfr    VRTRIM  = 0xA6;

#define CKSEL          (*(unsigned char volatile xdata *)0xfe00)
#define CKDIV          (*(unsigned char volatile xdata *)0xfe01)
#define IRC24MCR       (*(unsigned char volatile xdata *)0xfe02)
#define XOSCCR       (*(unsigned char volatile xdata *)0xfe03)
#define IRC32KCR       (*(unsigned char volatile xdata *)0xfe04)

#define USBCHIPID
#define CPUIDBASE 0xfde0

#define T22M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x0b)) //22.1184MHz
#define T24M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x0c)) //24MHz
#ifdef  USBCHIPID
#define T27M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x0d)) //27MHz
#define T30M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x0e)) //30MHz
#define T33M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x0f)) //33.1776MHz
#define T35M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x10)) //35MHz
#define T36M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x11)) //36.864MHz
#define T40M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x12)) //40MHz
#define T44M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x13)) //44.2368MHz
#define T48M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x14)) //48MHz
#else
#define T20M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x0d)) //20MHz
#define T27M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x0e)) //27MHz
#define T30M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x0f)) //30MHz
#define T33M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x10)) //33.1776MHz
#define T35M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x11)) //35MHz
#define T36M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x12)) //36.864MHz
#define T40M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x13)) //40MHz
#define T45M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x14)) //45MHz
#endif
#define VRT6M_ADDR  (*(unsigned char volatile xdata *)(CPUIDBASE + 0x15)) //VRTRIM_6M
#define VRT10M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x16)) //VRTRIM_10M
#define VRT27M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x17)) //VRTRIM_27M
#define VRT44M_ADDR (*(unsigned char volatile xdata *)(CPUIDBASE + 0x18)) //VRTRIM_44M
//========================================================================
// 函数: void delay_ms(u8 ms)
// 描述: 延时函数。
// 参数: ms,要延时的ms数, 这里只支持1~255ms. 自动适应主时钟.
// 返回: none.
// 版本: VER1.0
// 日期: 2021-3-9
// 备注:
//========================================================================
void delay_ms(unsigned int ms)
{
   unsigned int i;
   do{
      i = MAIN_Fosc / 10000;
      while(--i); //10T per loop
   }while(--ms);
}
void Delay1ms(void)       //@24.000MHz
{
      unsigned char data i, j;

      i = 24;
      j = 85;
      do
      {
            while (--j);
      } while (--i);
}
void Delay10ms(void)       //@24.000MHz
{
      unsigned char data i, j;

      i = 234;
      j = 115;
      do
      {
            while (--j);
      } while (--i);
}
/******************** 主函数 **************************/
void main(void)
{

      P_SW2 = 0x80;
      CKSEL = 0x00;                            //选择内部IRC ( 默认 )
      P_SW2 = 0x00;
P_SW2 |= 0x80;  //扩展寄存器(XFR)访问使能
P0M0 = 0x00;P0M1 = 0x00;P1M0 = 0x00;P1M1 = 0x00;P2M0 = 0x00;P2M1 = 0x00;P3M0 = 0x00;P3M1 = 0x00;P4M0 = 0x00;P4M1 = 0x00;P5M0 = 0x00;P5M1 = 0x00;
//选择24MHz
CLKDIV = 0x04;
IRTRIM = T24M_ADDR;
VRTRIM = VRT27M_ADDR;
IRCBAND &= ~0x03;
      IRCBAND |= 0x02;
      CLKDIV = 0x00;

      while(1)
      {
      delay_ms(1);
      delay_ms(1);
      Delay1ms();
      Delay1ms();

      }


}