174 lines
4.1 KiB
C
174 lines
4.1 KiB
C
#include "main.h"
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/* LED显示 */
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uchar ucLed[8] = {0, 0, 0, 0, 0, 0, 0, 0};
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/* 数码管显示 */
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uchar Seg_Buf[8] = {5, 10, 10, 10, 10, 10, 10, 10}; // 数码管显示的值
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uchar Seg_Pos; // 数码管指示
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uchar Seg_Point[8] = {0, 0, 0, 0, 0, 0, 0, 0}; // 某位是否显示小数点
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/* 串口方面 */
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uchar Uart_Buf[10]; // 串口接收到的数据
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uchar Uart_Rx_Index; // 串口接收到的数据的指针
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/* 时间方面 */
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uint time_all_1s;
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uchar Sys_Tick;
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uchar time_100ms;
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/* 判断 */
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bit Uart_Flag;
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bit Wring_Flag;
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bit Led_Blink_Flag;
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/* 显示 */
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uchar Seg_show_mode; // 0 噪音分贝 1 参数显示
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/* 数据 */
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uint Noise_Value_10x;
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uchar Noise_Para = 65;
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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_Up, Key_Old;
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if (time_all_1s % 10)
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return;
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Key_Val = Key_Read();
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Key_Down = Key_Val & (Key_Old ^ Key_Val);
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Key_Up = ~Key_Val & (Key_Old ^ Key_Val);
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Key_Old = Key_Val;
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if (Key_Down == 12)
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Seg_show_mode = (++Seg_show_mode) % 2;
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if (Seg_show_mode == 1)
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{
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if (Key_Down == 16)
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Noise_Para = (Noise_Para == 90) ? 0 : Noise_Para + 5;
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else if (Key_Down == 17)
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Noise_Para = (Noise_Para == 0) ? 90 : Noise_Para - 5;
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}
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}
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/* 数码管处理函数 */
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void Seg_Proc()
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{
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if (time_all_1s % 50)
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return;
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Noise_Value_10x = Ad_Read(0x03) * 180 / 51;
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Wring_Flag = Noise_Value_10x > Noise_Para * 10;
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Seg_Buf[0] = 11; // U
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Seg_Buf[1] = Seg_show_mode + 1;
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switch (Seg_show_mode)
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{
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case 0:
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/* 噪音分贝显示 */
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Seg_Point[6] = 1;
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Seg_Buf[2] = Seg_Buf[3] = Seg_Buf[4] = 10;
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Seg_Buf[5] = (Noise_Value_10x / 100 % 10 == 0) ? 10
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: Noise_Value_10x / 100 % 10;
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Seg_Buf[6] = Noise_Value_10x / 10 % 10;
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Seg_Buf[7] = Noise_Value_10x % 10;
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break;
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case 1:
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/* 分贝参数 */
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Seg_Point[6] = 0;
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Seg_Buf[2] = Seg_Buf[3] = Seg_Buf[4] = Seg_Buf[5] = 10;
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Seg_Buf[6] = (Noise_Para / 10 % 10 == 0) ? 10
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: Noise_Para / 10 % 10;
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Seg_Buf[7] = Noise_Para % 10;
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break;
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}
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}
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/* LED处理函数 */
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void Led_Proc()
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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[7] = Led_Blink_Flag;
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}
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/* 串口处理函数 */
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void Uart_Proc()
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{
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if (Uart_Rx_Index == 0)
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// 没有接收到任何数据
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return;
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if (Sys_Tick >= 10)
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{
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Sys_Tick = Uart_Flag = 0;
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if (Seg_show_mode == 0)
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{
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if (Uart_Buf[0] == 'R' && Uart_Buf[1] == 'e' && Uart_Buf[2] == 't' &&
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Uart_Buf[3] == 'u' && Uart_Buf[4] == 'r' && Uart_Buf[5] == 'n')
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printf("Noises:%0.1fdB", (float)Noise_Value_10x / 10.0);
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}
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memset(Uart_Buf, 0, Uart_Rx_Index);
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Uart_Rx_Index = 0;
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}
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}
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/* 定时器0中断初始化 */
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void Timer0_Init(void) // 1毫秒@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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TL0 = 0x18; // 设置定时初始值
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TH0 = 0xFC; // 设置定时初始值
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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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ET0 = 1;
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EA = 1;
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}
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/* 定时器0中断函数 */
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void Timer0_ISR(void) interrupt 1
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{
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if (++time_all_1s == 1000)
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time_all_1s = 0;
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if (++Seg_Pos == 8)
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Seg_Pos = 0;
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if (Uart_Flag)
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Sys_Tick++;
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if (Wring_Flag)
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{
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if (++time_100ms == 100)
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{
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time_100ms = 0;
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Led_Blink_Flag ^= 1;
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}
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}
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else
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{
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time_100ms = 0;
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Led_Blink_Flag = 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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/* 串口中断服务函数 */
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void Uart_ISR(void) interrupt 4
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{
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if (RI == 1) // 串口接收到数据
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{
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Uart_Flag = 1;
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Sys_Tick = 0;
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Uart_Buf[Uart_Rx_Index] = SBUF;
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Uart_Rx_Index++;
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RI = 0;
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}
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if (Uart_Rx_Index > 10)
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Uart_Rx_Index = 0;
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}
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void main()
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{
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System_Init();
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Timer0_Init();
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Uart1_Init();
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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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Uart_Proc();
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Led_Proc();
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}
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} |