#include "stc15.h"
#include "intrins.h"
#include "gpio.h"
#include "595hc.h"
#define MAIN_Fosc 11059200L //定义主时钟
u16 counter = 0;
u8 countdown = 5;
u16 i,j,k;
bit start_flag = 0;
bit next_flag = 0;
bit confirm_flag = 0;
bit up = 0;
bit down = 0;
u16 Fre_input = 0;
u16 Fre_counter = 0;
u8 code start[8] = {1,22,24,25,26,17,17,17};
// Y P04 P05 P06 P07
// | | | |
// X | | | |
// P00 ---- K00 ---- K01 ---- K02 ---- K03 ----
// | | | |
// P01 ---- K04 ---- K05 ---- K06 ---- K07 ----
// | | | |
// P02 ---- K08 ---- K09 ---- K10 ---- K11 ----
// | | | |
// P03 ---- K12 ---- K13 ---- K14 ---- K15 ----
// | | | |
u8 KeyCode = 0; //给用户使用的键码, 1~16有效
u8 IO_KeyState = 0, IO_KeyState1 = 0, IO_KeyHoldCnt = 0; //行列键盘变量
static u8 get_flag = 1;
void IO_KeyDelay(void)
{
i = 60;
while (--i);
}
void IO_KeyScan(void) //50ms call
{
j = IO_KeyState1; //保存上一次状态
P0 = 0xf0; //X低，读Y
IO_KeyDelay();
IO_KeyState1 = P0 & 0xf0;
P0 = 0x0f; //Y低，读X
IO_KeyDelay();
IO_KeyState1 |= (P0 & 0x0f);
IO_KeyState1 ^= 0xff; //取反
if (j == IO_KeyState1) //连续两次读相等
{
j = IO_KeyState;
IO_KeyState = IO_KeyState1;
if (IO_KeyState != 0) //有键按下
{
F0 = 0;
if (j == 0) F0 = 1; //第一次按下
else if (j == IO_KeyState)
{
if (++IO_KeyHoldCnt >= 20) //1秒后重键
{
IO_KeyHoldCnt = 18;
F0 = 1;
}
}
if (F0)
{
next_flag = 1;
switch(IO_KeyState)
{
case 0x11: get_flag = 0 ;break;//0
case 0x12: get_flag = 1 ;break;//1
case 0x14: get_flag = 2 ;break;//2
case 0x18: get_flag = 3 ;break;//3
case 0x21: get_flag = 4 ;break;//4
case 0x22: get_flag = 5 ;break;//5
case 0x24: get_flag = 6 ;break;//6
case 0x28: get_flag = 7 ;break;//7
case 0x41: get_flag = 8 ;break;//8
case 0x42: get_flag = 9 ;break;//9
case 0x44: get_flag = 10 ;break;//a
case 0x48: get_flag = 11 ;break;//b
case 0x81: get_flag = 12 ;break;//c
case 0x82: up = 1 ;break;//d
case 0x84: down = 1 ;break;//e
case 0x88: IAP_CONTR = 0x20;break;//复位
default: get_flag = 16 ;break;
}
}
}
else IO_KeyHoldCnt = 0;
}
P0 = 0xff;
}
/********************延时函数******************************/
void Delay1ms()//@11.0592MHz
{
_nop_();
_nop_();
_nop_();
i = 11;
j = 190;
do
{
while (--j);
} while (--i);
}
void Delay_ms(u16 xms)
{
for (k=0;k<xms;k++)
{
Delay1ms();
}
}
/********************** Timer0初始化 ************************/
void Timer0Init(void)//1毫秒 @11.0592MHz
{
AUXR = 0x80;//定时器时钟1T模式
TMOD = 0x00;//设置定时器模式
TL0 = 0xCD;//设置定时初值
TH0 = 0xD4;//设置定时初值
EA = 1; //开启总中断
ET0 = 1;//允许定时器0中断
TF0 = 0;//清除TF0标志
TR0 = 1;//定时器0开始计时
}
/********************** Timer0中断函数 ************************/
void timer0 (void) interrupt 1
{
counter++;
Fre_counter++;
DisplayScan();
}
/********************** 频率产生 ************************/
void Fre_output(u16 Fre)//T=Fre(ms);f=1000/Fre
{
LED8[0] = 15; //F
LED8[1] = 29; //r
LED8[2] = 14; //E
LED8[3] = 17; //-
LED8[4] = 17; //-
Fre = 500 / Fre;
if(Fre_counter >= Fre)
{
P16 = !P16;
Fre_counter = 0;
}
}
/********************** 步进加_减 ************************/
//返回1：加
//返回0：减
int up_down(bit up,bit down)
{
if(up == 1)//步进 - 加1
{
LED8[7] = LED8[7] + 1;
if(LED8[7] == 10)
{
if(LED8[6] == 9)
{
if(LED8[5] == 9)
{
LED8[7] = 9;
LED8[6] = 9;
LED8[5] = 9;
}
else
{
LED8[7] = 0;
LED8[6] = 0;
LED8[5] ++;
}
}
else
{
LED8[7] = 0;
LED8[6] ++;
}
}
return 1;
}
else if (down == 1)//步进 - 减1
{
LED8[7] = LED8[7] - 1;
if(LED8[7] < 0)
{
if(LED8[6] == 0 )
{
if(LED8[5] == 0)
{
LED8[7] = 0;
LED8[6] = 0;
LED8[5] = 0;
}
else
{
LED8[7] = 9;
LED8[6] = 9;
LED8[5] --;
}
}
else
{
LED8[7] = 9;
LED8[6] --;
}
}
return 0;
}
}
/********************** 主函数 ************************/
void main(void)
{
GPIO();
Timer0Init();
P16 = 1;
P17 = 1;
for (k = 0; k < 8; k++) LED8[k] = 17;
Fre_counter = 0;
counter = 0;
while(1)
{
if(counter >= 50) //50ms扫描键盘
{
IO_KeyScan();
counter = 0;
}
if(next_flag==0) //提示信息:input
{
for(i=0; i<5; i++) LED8[i] = start[i];
}
if(next_flag==1) //有按键按下
{
if(get_flag != 12) //输入目标频率：10~999
{
LED8[5] = LED8[6];//移位
LED8[6] = LED8[7];
LED8[7] = get_flag;
next_flag = 0;
}
else //确认按键
{
Fre_input = LED8[5] * 100 + LED8[6] * 10 + LED8[7];
switch(up_down(up,down)) //步进微调
{
case 0: Fre_input --; //减1
down = 0;
break;
case 1: Fre_input ++; //加1
up = 0;
break;
default:break;
}
Fre_output(Fre_input);
P17 = !P17;
}
}
}
}
