//播放音乐
void audio_play(void)
{
WM8978_ADDA_Cfg(1,0); //开启DAC
WM8978_Input_Cfg(0,0,0);//关闭输入通道
WM8978_Output_Cfg(1,0); //开启DAC输出
audio_play_song("0:/wav/1.wav"); //播放这个音频文件
}
//播放音乐
void audio_play(void)
{
u8 res;
DIR wavdir; //目录
FILINFO wavfileinfo;//文件信息
u8 *fn; //长文件名
u8 *pname; //带路径的文件名
u16 totwavnum; //音乐文件总数
u16 curindex; //图片当前索引
u8 key; //键值
u16 temp;
u16 *wavindextbl; //音乐索引表
WM8978_ADDA_Cfg(1,0); //开启DAC
WM8978_Input_Cfg(0,0,0);//关闭输入通道
WM8978_Output_Cfg(1,0); //开启DAC输出
while(f_opendir(&wavdir,"0:/MUSIC"))//打开音乐文件夹
{
Show_Str(60,190,240,16,"MUSIC文件夹错误!",16,0);
delay_ms(200);
LCD_Fill(60,190,240,206,WHITE);//清除显示
delay_ms(200);
}
totwavnum=audio_get_tnum("0:/MUSIC"); //得到总有效文件数
while(totwavnum==NULL)//音乐文件总数为0
{
Show_Str(60,190,240,16,"没有音乐文件!",16,0);
delay_ms(200);
LCD_Fill(60,190,240,146,WHITE);//清除显示
delay_ms(200);
}
wavfileinfo.lfsize=_MAX_LFN*2+1; //长文件名最大长度
wavfileinfo.lfname=mymalloc(SRAMIN,wavfileinfo.lfsize); //为长文件缓存区分配内存
pname=mymalloc(SRAMIN,wavfileinfo.lfsize); //为带路径的文件名分配内存
wavindextbl=mymalloc(SRAMIN,2*totwavnum); //申请2*totwavnum个字节的内存,用于存放音乐文件索引
while(wavfileinfo.lfname==NULL||pname==NULL||wavindextbl==NULL)//内存分配出错
{
Show_Str(60,190,240,16,"内存分配失败!",16,0);
delay_ms(200);
LCD_Fill(60,190,240,146,WHITE);//清除显示
delay_ms(200);
}
//记录索引
res=f_opendir(&wavdir,"0:/MUSIC"); //打开目录
if(res==FR_OK)
{
curindex=0;//当前索引为0
while(1)//全部查询一遍
{
temp=wavdir.index; //记录当前index
res=f_readdir(&wavdir,&wavfileinfo); //读取目录下的一个文件
if(res!=FR_OK||wavfileinfo.fname[0]==0)break; //错误了/到末尾了,退出
fn=(u8*)(*wavfileinfo.lfname?wavfileinfo.lfname:wavfileinfo.fname);
res=f_typetell(fn);
if((res&0XF0)==0X40)//取高四位,看看是不是音乐文件
{
wavindextbl[curindex]=temp;//记录索引
curindex++;
}
}
}
curindex=0; //从0开始显示
res=f_opendir(&wavdir,(const TCHAR*)"0:/MUSIC"); //打开目录
while(res==FR_OK)//打开成功
{
dir_sdi(&wavdir,wavindextbl[curindex]); //改变当前目录索引
res=f_readdir(&wavdir,&wavfileinfo); //读取目录下的一个文件
if(res!=FR_OK||wavfileinfo.fname[0]==0)break; //错误了/到末尾了,退出
fn=(u8*)(*wavfileinfo.lfname?wavfileinfo.lfname:wavfileinfo.fname);
strcpy((char*)pname,"0:/MUSIC/"); //复制路径(目录)
strcat((char*)pname,(const char*)fn); //将文件名接在后面
LCD_Fill(60,190,240,190+16,WHITE); //清除之前的显示
Show_Str(60,190,240-60,16,fn,16,0); //显示歌曲名字
audio_index_show(curindex+1,totwavnum);
key=audio_play_song(pname); //播放这个音频文件
if(key==KEY2_PRES) //上一曲
{
if(curindex)curindex--;
else curindex=totwavnum-1;
}else if(key==KEY0_PRES)//下一曲
{
curindex++;
if(curindex>=totwavnum)curindex=0;//到末尾的时候,自动从头开始
}else break; //产生了错误
}
myfree(SRAMIN,wavfileinfo.lfname); //释放内存
myfree(SRAMIN,pname); //释放内存
myfree(SRAMIN,wavindextbl); //释放内存
}
//------------------------------------------------------------------------------
// @fn send_sensor_values
//!
//! An Identifier value (CAN2.0A) is given to DVK90CAN1 board (ex: 0x080).
//! 1) The first operation is to detect a CAN receive remote frame with
//! ID == MY_ID_TAG.
//! 2) The second operation is to send a CAN data frame with the same ID and as
//! data:
//! - the temperatue value (1 byte ),
//! - the luminosity value (1 byte ),
//! - the VCC-IN value (2 bytes).
//! 3) IAP detection.
//!
//! @warning - Use DVK90CAN1 board,
//! - can_init() must be perform before,
//! - CAN_Bootloader_IAR Ver3 needed.
//!
//! @param none
//!
//! @return none
//!
//------------------------------------------------------------------------------
void send_sensor_values(void)
{
U8 temp, expected_nnb;
U8 iap_buffer[8];
U8 sensor_buffer[8];
U16 v_in;
st_cmd_t iap_message;
st_cmd_t sensor_message;
U16 ack_jingle[] = { 100, 30, A7, 0 };
// --- Init data and command for IAP detection
expected_nnb = Farflash_rd_byte(NNB_ADDRESS);
iap_message.pt_data = &iap_buffer[0];
iap_message.ctrl.ide = 0; //-- CAN 2.0A
iap_message.dlc = 1; //-- Message with 1-byte data = NNB
iap_message.id.std = 0x7FF & (((U16)(Farflash_rd_byte(CRIS_ADDRESS)))<< 4);
iap_message.cmd = CMD_RX_DATA_MASKED;
// --- Init data and command for REPLY-sensor message
sensor_message.pt_data = &sensor_buffer[0];
sensor_message.ctrl.ide = 0; //-- CAN 2.0A
sensor_message.dlc = 4; //-- Message with 4-byte data
sensor_message.id.std = MY_ID_TAG;
sensor_message.cmd = CMD_REPLY_MASKED;
sensor_buffer[0] = (U8)(get_temperature());
sensor_buffer[1] = get_luminosity();
v_in = get_vin();
sensor_buffer[2] = (U8)(v_in >> 8 );
sensor_buffer[3] = (U8)(v_in );
// --- Enable IAP detection
while(can_cmd(&iap_message) != CAN_CMD_ACCEPTED);
// --- Enable REPLY for sensor message
while(can_cmd(&sensor_message) != CAN_CMD_ACCEPTED);
while(1)
{
// --- Test REPLY completed
temp = can_get_status(&sensor_message);
if(temp == CAN_STATUS_COMPLETED)
{
// --- Re-prepare data for the reply
sensor_buffer[0] = (U8)(get_temperature());
sensor_buffer[1] = get_luminosity();
v_in = get_vin();
sensor_buffer[2] = (U8)(v_in >> 8 );
sensor_buffer[3] = (U8)(v_in );
// --- Re-enable REPLY for sensor message
while(can_cmd(&sensor_message) != CAN_CMD_ACCEPTED);
// --- Acoustic acknowledge (must be short !)
audio_play_song(ack_jingle);
}
// --- Test IAP detected
temp = can_get_status(&iap_message);
if(temp == CAN_STATUS_COMPLETED)
{
// --- Control of length & data
if((iap_buffer[0] == expected_nnb) && (iap_message.dlc == 1))
{
Indirect_jump_to(BOOT_W_ADDRESS); //-- Bye !
}
else
{
// --- Re-enable IAP detection
while(can_cmd(&iap_message) != CAN_CMD_ACCEPTED);
}
}
} // while(
