网友TEA5767做FM收音机 - - Powered by Discuz!

#ifndef __FM62429_H_INCLUDED__
#define __FM62429_H_INCLUDED__
#include "Common.h"
// 端口定义
#define FM62429_SDA_H() SET_BIT(PORTB,PB2)
#define FM62429_SDA_L() CLR_BIT(PORTB,PB2)
#define FM62429_SCL_H() SET_BIT(PORTB,PB5)
#define FM62429_SCL_L() CLR_BIT(PORTB,PB5)
#define FM62429_PORT_INIT() SET_BIT(DDRB,DDB2);SET_BIT(DDRB,DDB5)
// 初始化函数
void FM62429_Init(uchar Volume);
// 调整音量（０-83）
void FM62429_AdjustVolume(uchar Volume);
#endif //__FM62429_H_INCLUDED__
main.c
#include <avr/eeprom.h>
#include "common.h"
#include "LCD1602.h"
#include "TWILib.h"
#include "Tea5767.h"
#include "FM62429.h"
#define OPER_MODE_RADIO 0 // 正常收音机模式
#define OPER_MODE_SET 1 // 设置模式
// 正确保存标志
#define SAVE_MASK 0x4B // 'K'
// 设置模式
#define SET_MODE_SEARCH 1 // 搜索
#define SET_MODE_SOUNDMODE 2 // 立体声、单声道模式选中
#define SET_MODE_MIN 1
#define SET_MODE_MAX 2
// 声音模式
#define SOUND_MODE_STEREO 1
#define SOUND_MODE_MONO 2
#define SOUND_MODE_MIN 1
#define SOUND_MODE_MAX 2
// 音量
#define VOLUME_MAX 84
#define VOLUME_MIN 0
#define CHANNEL_NUM 10
#define CHANNEL_MIN 1
#define CHANNEL_MAX CHANNEL_NUM
// 搜索模式
#define STATE_SEARCH 1
#define STATE_STORE 2
// 最小频率
#define FREQ_MIN ((ulong)87500)
#define FREQ_MAX ((ulong)120000)
// 全局变量
uchar OperMode = OPER_MODE_RADIO; // 操作模式
uchar SetMode = SET_MODE_MIN; // 搜索频道
uchar SoundMode = SOUND_MODE_MIN; // 声音模式
BOOL DoingMenu = FALSE; // 是否处于选择菜单方式
ushort BlinkCounter = 0; // 控制闪烁
uchar Volume = 42; // 音量
ulong ChannelFreq = 96600; // 频道频率（单位为KHZ)
ulong ChannelSearch = FREQ_MIN; // 搜索起始频率
uchar ChannelIndex = 0; // 当前播放的频道编号（1-10)
uchar ChannelSaveIndex = CHANNEL_MIN;
uchar ChannelState = STATE_SEARCH;
// 开关健(PD7)
#define POWER_ON()
#define POWER_OFF() SET_BIT(DDRD,DDD7);CLR_BIT(PORTD,PD7);
// 闪烁控制变量的最大值
#define BLINK_COUNTER_MAX 10
// 是否闪烁
#define IS_BLINK() (BlinkCounter > BLINK_COUNTER_MAX/2)
//======================================================================================================
// 预先保持的10个频道
//======================================================================================================
ulong EEMEM ChannelConfig[CHANNEL_NUM+1] = { 0 };
ulong ChannelArray[CHANNEL_NUM+1 ] = { 0 };
// 读取预先保持的频道
void ReadChannelConfig()
{
ulong data = 0;
uchar mask = 0 , i = 0;
// 等待EEPROM空闲
eeprom_busy_wait();
// 写入数据
eeprom_read_block( ChannelArray,ChannelConfig, 4*(1+CHANNEL_NUM));
// 解析第一个字节，构造第一个字节，从地位到高位分别是：ChannelIndex,Volume,SoundMode,SAVEMASK
data = ChannelArray[0];
ChannelIndex = (uchar)(data & 0xFF);
data >>= 8;
Volume = (uchar)(data & 0xFF);
data >>= 8;
SoundMode = (uchar)(data & 0xFF);
data >>= 8;
mask = (uchar)(data & 0xFF);
if( ( mask != SAVE_MASK ) ||
( ChannelIndex < CHANNEL_MIN || ChannelIndex > CHANNEL_MAX ) ||
( SoundMode < SOUND_MODE_MIN || SoundMode > SOUND_MODE_MAX ) ||
( Volume > VOLUME_MAX ) )
{
ChannelIndex = 0;
Volume = 42;
SoundMode = SOUND_MODE_STEREO;
for(i = 0; i < CHANNEL_NUM+1; i++ )
ChannelArray[i] = 0;
}
else
{
ChannelFreq = ChannelArray[ChannelIndex];
}
}
// 写设置
void WriteChannelConfig()
{
// 构造第一个字节，构造第一个字节，从低位到高位分别是：ChannelIndex,Volume,SoundMode,SaveMask
ulong data = SAVE_MASK;
data <<=8;
data |= SoundMode;
data <<=8;
data |= Volume;
data <<=8;
data |= ChannelIndex;
ChannelArray[0] = data;
// 等待EEPROM空闲
eeprom_busy_wait();
// 写入数据
eeprom_write_block( ChannelArray,ChannelConfig, 4*(1+CHANNEL_NUM) );
}
// 显示存储频道信息
void DisplayFreqSave(uchar Index)
{
uchar i = 0;
uchar buffer[17] = { 0 };
// 显示音量、声音模式
for( i = 0;i < 16; i++ )buffer[i] = ' ' ;
buffer[0] = 'S';
buffer[1] = 'T';
buffer[2] = 'O';
buffer[3] = 'R';
buffer[4] = 'E';
buffer[5] = ':';
buffer[6] = 'C';
buffer[7] = 'H';
buffer[8] = (Index/10)+'0';
buffer[9] = (Index%10)+'0';
LCD1602_Display_String(1,0,buffer);
}
// 显示频率信息
void DisplayFreqInfo(ulong Freq,uchar Index)
{
uchar i = 0,j = 0;
ulong data = 0;
uchar buffer[17] = { 0 };
// 显示频率
data = Freq/10;
for( i = 0;i < 16; i++ )buffer[i] = ' ';
if( Index <= CHANNEL_MAX )
{
j = 3;
buffer[0] = (Index/10)+'0';
buffer[1] = (Index%10)+'0';
}
else
{
j = 2;
}
buffer[j+0] = 'F';
buffer[j+1] = 'M';
buffer[j+2] = ':';
if( data > 9999 )
{
data %= 100000;
buffer[j+3] = (data/10000)+'0';data %= 10000;
buffer[j+4] = (data/1000)+'0'; data %= 1000;
buffer[j+5] = (data/100)+'0'; data %= 100;
buffer[j+6] = '.';
buffer[j+7] = (data/10)+'0'; data %= 10;
buffer[j+8]= (data%10)+'0';
buffer[j+9]= 'M';
buffer[j+10]= 'H';
buffer[j+11]= 'Z';
}
else
{
buffer[j+3] = (data/1000)+'0';data %= 1000;
buffer[j+4] = (data/100)+'0'; data %= 100;
buffer[j+5] = '.';
buffer[j+6] = (data/10)+'0'; data %= 10;
buffer[j+7] = (data%10)+'0';
buffer[j+8]= 'M';
buffer[j+9]= 'H';
buffer[j+10]= 'Z';
}
LCD1602_Display_String(2,0,buffer);
}
//=======================================================================
// 按键处理
//=======================================================================
// 按键S1-S5(PD2-PD7)
// 是否为单个键按下
#define IS_KEY_PRESSED(k) (((k) > 0) && (((k) & ((k)-1)) == 0 ))
//#define GET_KEY_CODE() ((~PIND) & 0x1F)
#define KEY_CODE(n) (((uchar)1) << (n) )
#define KEY_S1 KEY_CODE(0)
#define KEY_S2 KEY_CODE(1)
#define KEY_S3 KEY_CODE(2)
#define KEY_S4 KEY_CODE(3)
#define KEY_S5 KEY_CODE(4)
#define KEY_S6 KEY_CODE(5)
// 读取按键
uchar GET_KEY_CODE()
{
uchar keycode = PIND;
keycode >>= 2;
keycode = ~keycode;
keycode &= 0x3F; // 6个键
return keycode;
}
// 读取按键
uchar GetKey( )
{
uchar key = 0;
static uchar lastkey = 0; // 记录上次的按键
// 读取键盘
key = GET_KEY_CODE();
if( !IS_KEY_PRESSED(key) )
{
lastkey = 0;
return 0;
}
// 确定是否新的键按下
if( lastkey == 0 )
{
lastkey = key; // 保存本次扫描结果
DelayMs(10); // 去抖处理
key = GET_KEY_CODE();
if( key == lastkey )
{
return key;
}
}
return 0;
}
//=======================================================================
// 设置函数
//=======================================================================
void SetHandler()
{
uchar key = 0;
// 切换闪烁标志
BlinkCounter++;
if( BlinkCounter > BLINK_COUNTER_MAX )
BlinkCounter = 0;
// 确定是否为选择菜单
if( DoingMenu )
{
key = GetKey();
if( key == KEY_S1) // 设置键（确认）
{
DoingMenu = FALSE; // 结束菜单选择
if( SetMode == SET_MODE_SOUNDMODE )
SoundMode = SOUND_MODE_MIN;
else
ChannelState = STATE_SEARCH;
}
else if( key == KEY_S4 ) // 左移键
{
if(SetMode <= SET_MODE_MIN)
SetMode = SET_MODE_MAX;
else
SetMode--;
}
else if( key == KEY_S5 ) // 右移键
{
if( SetMode >= SET_MODE_MAX )
SetMode = SET_MODE_MIN;
else
SetMode++;
}
else // 显示菜单
{
// 选中的菜单应该闪烁(SETMODE)
LCD1602_Display_String(1,0,(const uchar*)" FM RADIO ");
LCD1602_Display_String(2,0,(const uchar*)"1:SEARCH 2:MODE ");
if(IS_BLINK())
{
if( SetMode == SET_MODE_SEARCH )
LCD1602_Display_Char(2,0,' ');
else
LCD1602_Display_Char(2,9,' ');
}
}
}
else
{
key = GetKey();
if( SetMode == SET_MODE_SOUNDMODE ) // 声音模式
{
if( key == KEY_S1) // 确认
{
// 结束设置
OperMode = OPER_MODE_RADIO;
}
else if( key == KEY_S4 ) // 左移键
{
if(SoundMode <= SOUND_MODE_MIN)
SoundMode = SOUND_MODE_MAX;
else
SoundMode--;
// 保存声道模式
WriteChannelConfig();
}
else if( key == KEY_S5 ) // 右移键
{
if( SoundMode >= SOUND_MODE_MAX )
SoundMode = SOUND_MODE_MIN;
else
SoundMode++;
// 保存声道模式
WriteChannelConfig();
}
else // 显示菜单
{
// 显示声音模式菜单，选中的声音模式闪烁
LCD1602_Display_String(1,0,(const uchar*)"MODE ");
LCD1602_Display_String(2,0,(const uchar*)"1.STEREO 2.MONO");
if(IS_BLINK())
{
if( SoundMode == SOUND_MODE_STEREO )
LCD1602_Display_Char(2,0,' ');
else
LCD1602_Display_Char(2,10,' ');
}
}
}
else // 搜索频道
{
if(ChannelState == STATE_SEARCH)
{
if( key == KEY_S1)
{
ChannelState = STATE_STORE;
}
else if ( key == KEY_S2 )
{
if( ChannelSearch < FREQ_MAX )
{
ChannelSearch += 100;
TEA5767_Adjust( ChannelSearch,(SoundMode == SOUND_MODE_MONO),FALSE);
}
}
else if( key == KEY_S3 )
{
if( ChannelSearch > FREQ_MIN )
{
ChannelSearch -= 100;
TEA5767_Adjust( ChannelSearch,(SoundMode == SOUND_MODE_MONO),FALSE);
}
}
else
{
LCD1602_Display_String(1,0,(const uchar*)"SEARCHING... ");
DisplayFreqInfo(ChannelSearch,CHANNEL_MAX+1);
}
}
else // 选择存取频道
{
if( key == KEY_S1)
{
// 显示正在存储信息
LCD1602_Display_String(1,0,(const uchar*)"STOREING... ");
DisplayFreqInfo(ChannelSearch,CHANNEL_MAX+1);
// 存储频道信息
ChannelArray[ChannelSaveIndex] = ChannelSearch;
WriteChannelConfig();
// 显示存储完成信息
LCD1602_Display_String(1,0,(const uchar*)"STORE OK! ");
DisplayFreqInfo(ChannelSearch,CHANNEL_MAX+1);
// 自动移动到下一个频道
if(ChannelSaveIndex < CHANNEL_MAX )
ChannelSaveIndex++;
else
ChannelSaveIndex = CHANNEL_MIN;
// 切换到正常收听状态
OperMode = OPER_MODE_RADIO;
}
else if ( key == KEY_S4 )
{
if( ChannelSaveIndex > CHANNEL_MIN )
ChannelSaveIndex--;
}
else if( key == KEY_S5 )
{
if( ChannelSaveIndex < CHANNEL_MAX )
ChannelSaveIndex++;
}
else
{
DisplayFreqSave(ChannelSaveIndex);
DisplayFreqInfo(ChannelSearch,CHANNEL_MAX+1);
}
}
}
}
}
//=======================================================================
// 显示音量、信号强度、声音模式、频率
//=======================================================================
void DisplayChannelInfo()
{
uchar i = 0;
uchar buffer[17] = { 0 };
uchar level = TEA5767_GetLevel(); // 0-15
for( i = 0;i < 16; i++ )buffer[i] = ' ' ;
// 显示音量、声音模式
buffer[6] = 'V';
buffer[7] = 'O';
buffer[8] = 'L';
buffer[9] = ':';
buffer[10]= (Volume/10)+'0';
buffer[11]= (Volume%10)+'0';
if( SoundMode == SOUND_MODE_STEREO)
{
buffer[14]= 'S';
buffer[15]= 'T';
}
else
{
buffer[14]= 'M';
buffer[15]= 'O';
}
LCD1602_Display_String(1,4,&buffer[4]);
LCD1602_Display_Volume();
LCD1602_Display_Level(level);
// 显示频率
DisplayFreqInfo(ChannelFreq,ChannelIndex);
}
// 正常收听函数
void RadioHandler()
{
DisplayChannelInfo();
}
// 关机函数
void PowerOff()
{
LCD1602_Display_String(1,0,(const uchar*)"Power Off ... ");
LCD1602_Display_String(2,0,(const uchar*)" ");
DelayMs(500);
POWER_OFF();
}
//=======================================================================
// 主函数
//=======================================================================
int main()
{
uchar key = 0;
// 初始化端口(S1-S5)
DDRD = 0;
PORTD = 0xFF;
// 先把音量改为0
FM62429_Init(0);
// 处理开关键
POWER_ON();
// 读取频道配置
ReadChannelConfig();
// LCD初始化
LCD1602_Init();
// Tea5767初始化
TEA5767_Init(ChannelFreq,(SoundMode == SOUND_MODE_MONO));
DelayMs(500);
// FM62429初始化
if( Volume %2 ) Volume--;
FM62429_AdjustVolume(Volume);
while(1)
{
// 设置模式
if( OperMode == OPER_MODE_SET )
{
SetHandler();
}
else // 正常收听模式
{
key = GetKey();
switch(key)
{
case KEY_S1:
OperMode = OPER_MODE_SET;
DoingMenu = TRUE;
SetMode = SET_MODE_MIN;
// 调用设置函数
SetHandler();
break;
case KEY_S2: // 音量增加
if(Volume < VOLUME_MAX )
{
Volume += 2;
FM62429_AdjustVolume(Volume);
WriteChannelConfig();// 保存音量
}
break;
case KEY_S3: // 音量减少
if( Volume > VOLUME_MIN )
{
Volume -=2;
FM62429_AdjustVolume(Volume);
WriteChannelConfig();// 保存音量
}
break;
case KEY_S4: // 切换到前一频道
if( ChannelIndex > CHANNEL_MIN )
{
ChannelIndex--;
ChannelFreq = ChannelArray[ChannelIndex];
FM62429_AdjustVolume(0);
TEA5767_Adjust( ChannelFreq,(SoundMode == SOUND_MODE_MONO),FALSE);
DelayMs(500);
FM62429_AdjustVolume(Volume);
WriteChannelConfig(); // 保存频道
}
break;
case KEY_S5: // 切换到后一频道
if( ChannelIndex < CHANNEL_MAX )
{
ChannelIndex++;
ChannelFreq = ChannelArray[ChannelIndex];
FM62429_AdjustVolume(0);
TEA5767_Adjust( ChannelFreq,(SoundMode == SOUND_MODE_MONO),FALSE);
DelayMs(500);
FM62429_AdjustVolume(Volume);
WriteChannelConfig();// 保存频道
}
break;
case KEY_S6:
PowerOff();
break;
default:
// 正常收听函数
RadioHandler();
break;
}
}
// 延时
DelayMs(50);
}
return 0;
}

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