/********************************************************************
函数功能：在LCD上显示频谱。
入口参数：无。
返 回：无。
备 注：无。
********************************************************************/
void ShowSpectrum(void)
{
int i,x,y,j,p;
//对输入信号进行缩小
for(i=0;i<LENGTH;i++)
{
AudioOutBuf[i]/=32;
}
FftInput(AudioOutBuf); //位倒序
FftExe(AudioOutBuf,Re,Im); //做FFT运算
LcdCls(); //清屏
//显示X、Y轴坐标
LcdSetPoint(0,35);
LcdPrints("0V");
LcdDrawLine(13,39,15,39);
LcdSetPoint(0,23);
LcdPrints("1V");
LcdDrawLine(13,27,15,27);
LcdSetPoint(0,11);
LcdPrints("2V");
LcdDrawLine(13,15,15,15);
LcdSetPoint(0,0);
LcdPrints("3V");
LcdDrawLine(13,3,15,3);
LcdSetPoint(14,40);
LcdPrints("0");
LcdSetPoint(13+26,40);
LcdPrints("3K");
LcdSetPoint(84-20,40);
LcdPrints("16K");
//直流分量直接显示
x=17;
y=MAX_HEIGHT-(Re[0]*MAX_HEIGHT/LENGTH)/1024;
LcdDrawLine(x,y,x,MAX_HEIGHT);
ProcPeak(0,y); //处理峰值
//每1点显示
for(i=1;i<14;i++)
{
x++;
y=sqrt(Re[i]*Re[i]+Im[i]*Im[i]); //计算模值
y/=10;
y=Compress(y); //压缩
y=MAX_HEIGHT-y; //换算为屏幕y轴位置
ProcPeak(i,y); //处理峰值
LcdDrawLine(x,y,x,MAX_HEIGHT); //画线
}
//每2点显示
p=14;
for(i=14;i<24;i++)
{
x++;
y=0;
for(j=0;j<2;j++)
{
y+=sqrt(Re[p]*Re[p]+Im[p]*Im[p]); //计算模值
p++;
}
y/=20; //取平均值
y=Compress(y); //压缩
y=MAX_HEIGHT-y; //换算为屏幕y轴位置
ProcPeak(i,y); //处理峰值
LcdDrawLine(x,y,x,MAX_HEIGHT); //画线
}
//每3点显示
for(i=24;i<34;i++)
{
x++;
y=0;
for(j=0;j<3;j++)
{
y+=sqrt(Re[p]*Re[p]+Im[p]*Im[p]); //计算模值
p++;
}
y/=30; //取平均值
y=Compress(y); //压缩
y=MAX_HEIGHT-y; //换算为屏幕y轴位置
ProcPeak(i,y); //处理峰值
LcdDrawLine(x,y,x,MAX_HEIGHT); //画线
}
//每4点显示
for(i=34;i<44;i++)
{
x++;
y=0;
for(j=0;j<4;j++)
{
y+=sqrt(Re[p]*Re[p]+Im[p]*Im[p]); //计算模值
p++;
}
y/=40; //取平均值
y=Compress(y); //压缩
y=MAX_HEIGHT-y; //换算为屏幕y轴位置
ProcPeak(i,y); //处理峰值
LcdDrawLine(x,y,x,MAX_HEIGHT); //画线
}
//每6点显示
for(i=44;i<54;i++)
{
x++;
y=0;
for(j=0;j<6;j++)
{
y+=sqrt(Re[p]*Re[p]+Im[p]*Im[p]); //计算模值
p++;
}
y/=60; //取平均值
y=Compress(y); //压缩
y=MAX_HEIGHT-y; //换算为屏幕y轴位置
ProcPeak(i,y); //处理峰值
LcdDrawLine(x,y,x,MAX_HEIGHT); //画线
}
//每9点显示
for(i=54;i<64;i++)
{
x++;
y=0;
for(j=0;j<9;j++)
{
y+=sqrt(Re[p]*Re[p]+Im[p]*Im[p]); //计算模值
p++;
}
y/=90; //取平均值
y=Compress(y); //压缩
y=MAX_HEIGHT-y; //换算为屏幕y轴位置
ProcPeak(i,y); //处理峰值
LcdDrawLine(x,y,x,MAX_HEIGHT); //画线
}
for(i=0;i<64;i++)
{
LcdDrawPoint(i+17,Peak[i]);
}
LcdRefresh(); //刷新
}
void show_menu()
{
LcdClearBuf();
switch(menu.screen)
{
case WELCOME:
{
LcdSetXY(0,0);
LcdPutStr("StrobeTuner", NORMAL);
LcdSetXY(0,10);
LcdPutStr("(C) MK 2016", NORMAL);
LcdSetXY(0,35);
LcdPutStr("Press any key.", NORMAL);
}
break;
case MAIN_SCREEN:
{
LcdSetXY(0,0);
switch(get_vfd_status())
{
case VFD_STOPPED:
LcdPutStr("Stopped", NORMAL);
break;
case VFD_SPIN_UP:
LcdPutStr("SpinUp", NORMAL);
break;
case VFD_SPIN_DOWN:
LcdPutStr("SpinDown", NORMAL);
break;
case VFD_IN_SYNC:
LcdPutStr("Running", NORMAL);
break;
}
LcdSetXY(0, 9);
print_pitch_name(tuner_cfg()->resultant_note, NORMAL);
LcdPutInt(tuner_cfg()->octave_index, 0, NORMAL);
LcdSetXY(47, 9);
if(tuner_cfg()->cent_offset > 0)
{
LcdPutStr("+ ", NORMAL);
LcdPutInt(tuner_cfg()->cent_offset, 0, NORMAL);
}
else if (tuner_cfg()->cent_offset < 0)
{
LcdPutStr("- ", NORMAL);
LcdPutInt(-tuner_cfg()->cent_offset, 0, NORMAL);
}
else
{
LcdPutStr("+/- 0", NORMAL);
}
LcdPutStr("c", NORMAL);
LcdSetXY(0, 18);
print_temperament_name(tuner_cfg()->temperament, NORMAL);
LcdSetXY(0, 27);
LcdPutStr("A4= ", NORMAL);
LcdPutInt(tuner_cfg()->A_ref_freq/10, 0, NORMAL);
LcdPutStr(".", NORMAL);
LcdPutInt(tuner_cfg()->A_ref_freq%10, 0, NORMAL);
LcdPutStr("Hz", NORMAL);
LcdSetXY(0, 42);
LcdPutStr("F= ", NORMAL);
LcdPutInt(tuner_cfg()->final_freq/1000, 0, NORMAL);
LcdPutStr(".", NORMAL);
LcdPutInt(tuner_cfg()->final_freq%1000, 3, NORMAL);
LcdPutStr("Hz", NORMAL);
}
break;
case SETTINGS:
{
LcdSetXY(7,0);
LcdPutStr("-SETTINGS-", NORMAL);
LcdSetXY(0,8);
LcdPutStr(" root ", (menu.settings_scr.selection == SEL_ROOT ? INVERTED : NORMAL));
print_pitch_name(tuner_cfg()->root_note, (menu.settings_scr.selection == SEL_ROOT ? INVERTED : NORMAL));
LcdSetXY(0,16);
LcdPutStr(" temperament ", (menu.settings_scr.selection == SEL_TEMPERAMENT ? INVERTED : NORMAL));
LcdSetXY(0,24);
LcdPutStr(" A frequency ", (menu.settings_scr.selection == SEL_A_FREQ ? INVERTED : NORMAL));
LcdSetXY(0,32);
LcdPutStr(" screen setup", (menu.settings_scr.selection == SEL_SCREEN ? INVERTED : NORMAL));
LcdSetXY(0,40);
LcdPutStr(" exit ", (menu.settings_scr.selection == SEL_EXIT ? INVERTED : NORMAL));
}
break;
case SET_ROOT_NOTE:
{
LcdSetXY(3, 0);
LcdPutStr("-ROOT NOTE-", NORMAL);
LcdSetXY(10, 15);
LcdPutStr("< ", NORMAL);
print_pitch_name(tuner_cfg()->root_note, NORMAL);
LcdSetXY(53, 15);
LcdPutStr(">", NORMAL);
LcdSetXY(0,30);
LcdPutStr(" exit ", INVERTED);
}
break;
case SET_TEMPERAMENT:
{
LcdSetXY(3, 0);
LcdPutStr("-TEMPERAM.-", NORMAL);
LcdSetXY(0,15);
print_temperament_name(tuner_cfg()->temperament, NORMAL);
LcdSetXY(1, 24);
LcdPutStr("< ", NORMAL);
LcdSetXY(79, 24);
LcdPutStr(">", NORMAL);
LcdSetXY(0,36);
LcdPutStr(" exit ", INVERTED);
}
break;
case SET_A_FREQ:
{
LcdSetXY(6, 0);
LcdPutStr("-REF. PITCH-", NORMAL);
LcdSetXY(10, 15);
LcdPutStr("< ", NORMAL);
LcdPutInt(tuner_cfg()->A_ref_freq/10, 0, NORMAL);
LcdPutStr(".", NORMAL);
LcdPutInt(tuner_cfg()->A_ref_freq%10, 0, NORMAL);
LcdPutStr("Hz", NORMAL);
LcdSetXY(70, 15);
LcdPutStr(">", NORMAL);
LcdSetXY(0,30);
LcdPutStr(" exit ", INVERTED);
}
break;
case SET_SCREEN:
{
LcdSetXY(2, 0);
LcdPutStr("-LCD SETUP-", NORMAL);
LcdSetXY(0,10);
LcdPutStr(" backlight ", (menu.lcd_settings_scr.selection == SEL_SCR_BRIGHT ? INVERTED : NORMAL));
LcdSetXY(0,20);
LcdPutStr(" contrast ", (menu.lcd_settings_scr.selection == SEL_SCR_CON ? INVERTED : NORMAL));
LcdSetXY(0,30);
LcdPutStr(" exit ", (menu.lcd_settings_scr.selection == SEL_SCR_EXIT ? INVERTED : NORMAL));
}
break;
case SET_CONTRAST:
{
LcdSetXY(4, 0);
LcdPutStr("-CONTRAST-", NORMAL);
LcdSetXY(32, 15);
LcdPutStr("< ", NORMAL);
LcdPutInt(lcd_cfg()->contrast, 0, NORMAL);
LcdSetXY(50, 15);
LcdPutStr(">", NORMAL);
LcdSetXY(0,30);
LcdPutStr(" exit ", INVERTED);
}
break;
case SET_BRIGHTNESS:
{
LcdSetXY(3, 0);
LcdPutStr("-BACKLIGHT-", NORMAL);
LcdSetXY(32, 15);
LcdPutStr("< ", NORMAL);
LcdPutInt(lcd_cfg()->brightness, 0, NORMAL);
LcdSetXY(50, 15);
LcdPutStr(">", NORMAL);
LcdSetXY(0,30);
LcdPutStr(" exit ", INVERTED);
}
break;
default:
break;
}
LcdRefresh();
}
/********************************************************************
函数功能：主函数。
入口参数：无。
返 回：无。
备 注：无。
********************************************************************/
void main(void)
{
#ifdef DEBUG0
int i;
#endif
int InterruptSource;
SystemClockInit(); //系统时钟初始化
LedInit(); //LED对应的管脚初始化
LcdInit(); //LCD初始化
AdcInit(); //ADC初始化
Timer1Init(); //定时器1初始化，用来产生10ms的定时扫描信号
KeyInit(); //键盘初始化
Uart0Init(); //串口0初始化
#ifdef DEBUG0
for(i=0;i<16;i++) //显示头信息
{
Prints(HeadTable[i]);
}
#endif
UsbChipInit(); //初始化USB部分
while(1)
{
InterruptSource=(*AT91C_UDP_ISR)&(0x0F|(1<<8)|(1<<12)); //取出需要的中断
if(InterruptSource) //如果监视的中断发生
{
if(InterruptSource&(1<<8))
{
*AT91C_UDP_ICR=1<<8; //清除中断
UsbBusSuspend(); //总线挂起中断处理
}
if(InterruptSource&(1<<12))
{
*AT91C_UDP_ICR=1<<12; //清除中断
UsbBusReset(); //总线复位中断处理
}
if(InterruptSource&(1<<0))
{
if(AT91C_UDP_CSR[0]&((1<<1)|(1<<2)|(1<<6))) //如果是SETUP包、缓冲未空等
{
UsbEp0Out(); //端点0输出中断处理
}
if(AT91C_UDP_CSR[0]&(1<<0)) //如果是端点0输入完成
{
UsbEp0In(); //端点0输入中断处理
}
}
if(InterruptSource&(1<<1))
{
UsbEp1In(); //端点1输入中断处理
}
if(InterruptSource&(1<<2))
{
UsbEp2Out(); //端点2输出中断处理
}
if(InterruptSource&(1<<3))
{
UsbEp3In(); //端点3输入中断处理
}
}
if(KeyUp||KeyDown) //如果用户操作了按键
{
DispKey(); //在LCD上显示按键情况
if(ConfigValue!=0) //如果已经设置为非0的配置，则可以返回报告数据
{
if(!Ep1InIsBusy) //如果端点1输入没有处于忙状态，则可以发送数据
{
KeyCanChange=0; //禁止按键扫描
if(KeyUp||KeyDown) //如果有按键事件发生
{
SendReport(); //则返回报告
}
KeyCanChange=1; //允许按键扫描
}
}
//清除KeyUp和KeyDown
KeyUp=0;
KeyDown=0;
LcdRefresh(); //刷新LCD显示
}
}
}
