180 lines
4.2 KiB
C
180 lines
4.2 KiB
C
#include "main.h"
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/* 变量声明区 */
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uchar Key_Slow_Down; // 按键减速专用变量
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uchar Seg_Buf[8] = {10, 10, 10, 10, 10, 10, 10, 10}; // 数码管显示数据存放数组
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uchar Seg_Point[8] = {0, 0, 0, 0, 0, 0, 0, 0}; // 数码管小数点数据存放数组
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uchar Seg_Pos; // 数码管扫描专用变量
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uint Seg_Slow_Down; // 数码管减速专用变量
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uchar ucLed[8] = {0, 0, 0, 0, 0, 0, 0, 0}; // Led显示数据存放数组
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uchar Uart_Slow_Down; // 串口减速专用变量
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uchar Seg_show_mode; // 0电压 1频率
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uint voltage_value_100x;
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uchar DAC_value = 102; // 2*51
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uint frequency_value;
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uint time_1s;
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bit output_mode; // 0固定DAC=2, 1DAC=RB2
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bit LED_mode; // 0开启功能 1关闭功能
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bit Seg_mode; // 0开启数码管 1关闭数码管
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/* 键盘处理函数 */
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void Key_Proc()
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{
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static uchar Key_Val, Key_Down, Key_Old, Key_Up; // 按键专用变量
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if (Key_Slow_Down)
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return;
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Key_Slow_Down = 1; // 键盘减速程序
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Key_Val = Key_Read(); // 实时读取键码值
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Key_Down = Key_Val & (Key_Old ^ Key_Val); // 捕捉按键下降沿
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Key_Up = ~Key_Val & (Key_Old ^ Key_Val); // 捕捉按键上降沿
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Key_Old = Key_Val; // 辅助扫描变量
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switch (Key_Down)
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{
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case 4:
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Seg_show_mode = (++Seg_show_mode) % 2;
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break;
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case 5:
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output_mode ^= 1;
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break;
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case 6:
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LED_mode ^= 1;
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break;
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case 7:
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Seg_mode ^= 1;
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break;
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}
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}
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/* 信息处理函数 */
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void Seg_Proc()
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{
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if (Seg_Slow_Down)
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return;
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Seg_Slow_Down = 1; // 数码管减速程序
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voltage_value_100x = Ad_Read(0x43);
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if (!output_mode)
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DAC_value = voltage_value_100x;
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else
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DAC_value = 102;
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if (!output_mode)
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Da_Write(DAC_value);
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else
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Da_Write(DAC_value);
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voltage_value_100x = voltage_value_100x * 100 / 51;
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if (!Seg_mode)
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{
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switch (Seg_show_mode)
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{
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case 0:
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/* 电压测量 */
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Seg_Buf[0] = 11; // U
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Seg_Buf[1] = Seg_Buf[2] = Seg_Buf[3] = Seg_Buf[4] = 10;
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Seg_Buf[5] = voltage_value_100x / 100;
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Seg_Buf[6] = voltage_value_100x / 10 % 10;
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Seg_Buf[7] = voltage_value_100x % 10;
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Seg_Point[5] = 1;
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break;
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case 1:
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/* 频率测量 */
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Seg_Buf[0] = 12; // F
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Seg_Buf[1] = 10;
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Seg_Buf[2] = (frequency_value / 100000 == 0) ? 10 : frequency_value / 100000;
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Seg_Buf[3] = ((frequency_value / 10000 % 10 == 0) && (Seg_Buf[2] == 10)) ? 10 : frequency_value / 10000 % 10;
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Seg_Buf[4] = ((frequency_value / 1000 % 10 == 0) && (Seg_Buf[3] == 10)) ? 10 : frequency_value / 1000 % 10;
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Seg_Buf[5] = ((frequency_value / 100 % 10 == 0) && (Seg_Buf[4] == 10)) ? 10 : frequency_value / 100 % 10;
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Seg_Buf[6] = ((frequency_value / 10 % 10 == 0) && (Seg_Buf[5] == 10)) ? 10 : frequency_value / 10 % 10;
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Seg_Buf[7] = frequency_value % 10;
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Seg_Point[5] = 0;
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break;
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}
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}
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else
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{
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uchar i;
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for (i = 0; i < 8; i++)
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{
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Seg_Buf[i] = 10;
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Seg_Point[i] = 0;
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}
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}
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}
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/* 其他显示函数 */
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void Led_Proc()
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{
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if (!LED_mode)
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{
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ucLed[0] = (Seg_show_mode == 0);
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ucLed[1] = (Seg_show_mode == 1);
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ucLed[2] = ((voltage_value_100x < 250 && voltage_value_100x >= 150) ||
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(voltage_value_100x >= 350));
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ucLed[3] = ((frequency_value < 5000 && frequency_value >= 1000) ||
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frequency_value >= 10000);
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ucLed[4] = (output_mode);
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}
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else
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{
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uchar i;
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for (i = 0; i < 8; i++)
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{
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ucLed[i] = 0;
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}
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}
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}
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// 计数器
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void Timer0Init(void) // 0微秒@12.000MHz
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{
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AUXR &= 0x7F; // 定时器时钟12T模式
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TMOD &= 0xF0; // 设置定时器模式
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TMOD |= 0x05;
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TL0 = 0x00; // 设置定时初值
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TH0 = 0x00; // 设置定时初值
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TF0 = 0; // 清除TF0标志
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TR0 = 1; // 定时器0开始计时
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}
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// 定时器
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void Timer1Init(void) // 1毫秒@12.000MHz
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{
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AUXR &= 0xBF; // 定时器时钟12T模式
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TMOD &= 0x0F; // 设置定时器模式
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TL1 = 0x18; // 设置定时初值
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TH1 = 0xFC; // 设置定时初值
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TF1 = 0; // 清除TF1标志
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TR1 = 1; // 定时器1开始计时
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ET1 = 1; // 允许定时器1中断
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EA = 1; // 允许总中断
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}
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/* 定时器1中断服务函数 */
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void Timer1Server() interrupt 3
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{
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if (++Key_Slow_Down == 10)
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Key_Slow_Down = 0; // 键盘减速专用
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if (++Seg_Slow_Down == 200)
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Seg_Slow_Down = 0; // 数码管减速专用
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if (++Seg_Pos == 8)
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Seg_Pos = 0; // 数码管显示专用
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if (++time_1s == 1000)
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{
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time_1s = 0;
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frequency_value = TH0 << 8 | TL0;
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TH0 = TL0 = 0;
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TF0 = 0;
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}
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Seg_Disp(Seg_Pos, Seg_Buf[Seg_Pos], Seg_Point[Seg_Pos]);
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Led_Disp(Seg_Pos, ucLed[Seg_Pos]);
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}
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/* Main */
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void main()
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{
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System_Init();
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Timer0Init();
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Timer1Init();
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while (1)
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{
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Key_Proc();
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Seg_Proc();
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Led_Proc();
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}
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} |