/**
* @brief UsartReceive 串口接收中断服务函数，用来控制音量
* @param 无
* @retval 无
*/
void UsartReceive(void)
{
//char text[40];
vu16 i=0;
if(USART_GetFlagStatus(USART1,USART_IT_RXNE)==SET)
{
USART_ClearFlag(USART1, USART_FLAG_RXNE | USART_FLAG_ORE);
//读数据并清 RXNE、ORE位
i = USART_ReceiveData(USART1);
printf("%c",i);
if(i == '+')
{
Volume_Add();
//printf("+");
}else if(i == '-')
{
Volume_Dec();
//printf("-");
}
}
}
/**
* @brief even_process 根据事件标志进行处理
* @param none
* @retval none
*/
static void even_process(void)
{
switch(touch_even)
{
/* 音量加 */
case E_UP:
Volume_Add();
touch_even = E_NULL;
break;
/* 音量减 */
case E_DOWN:
Volume_Dec();
touch_even = E_NULL;
break;
/* 播放、暂停键 */
case E_PLAY_STOP:
if(player_state == S_PLAY) //若当前状态为播放
{
player_state = S_STOP; //切换为暂停状态
}
else //若当前状态为暂停
player_state =S_PLAY; //切换为播放暂停
touch_even = E_NULL;
break;
/* 上一首 */
case E_PREV:
if(play_index <= 0)
{
play_index = 0;
}
else
{
play_index--;
#if 0 //放在player_run 函数里统一处理了
/* 检测要切换的歌曲是否在播放列表的上一页 */
if((play_index+8)/8 < current_page) //play_index从零开始计数所以+1，+7是使用进一法。 +1+7 =+8
{
current_page--; //更新当前页码
lcd_list(current_page); //刷新LCD列表
}
#endif
}
touch_even = E_NULL;
player_state = S_SWITCH; //进入切歌状态
break;
/* 下一首 */
case E_NEXT:
if(play_index < file_num-1)
{
play_index++;
#if 0 //放在player_run 函数里统一处理了
/* 检测要切换的歌曲是否在播放列表的下一页 */
if((play_index+8)/8 >current_page) //play_index从零开始计数所以+1，+7是使用进一法。 +1+7 =+8
{
current_page++; //更新当前页码
lcd_list(current_page); //刷新LCD列表
}
#endif
}
else
{
play_index = file_num-1; //play_index设置为最后一个歌曲文件
}
touch_even = E_NULL;
player_state = S_SWITCH; //进入切歌状态
break;
/* 向上 */
case E_SELT_UP:
if(select_index>0)
select_index--;
Lcd_GramScan(1);
LCD_Clear(12,88,8,145,BACKGROUND); //清除状态栏
Lcd_show_bmp(320-(103+(select_index*18)),240-20,"/mp3player/ui_select.bmp"); //显示“打勾”标签
touch_even = E_NULL;
break;
/* 向下 */
case E_SELT_DOWN:
if(select_index<8-1 && (select_index+8*(current_page-1))<file_num-1) //判断是否溢出，不大于8，不指向无文件名的位置
select_index++;
Lcd_GramScan(1);
LCD_Clear(12,88,8,145,BACKGROUND); //清除状态栏
Lcd_show_bmp(320-(103+(select_index*18)),240-20,"/mp3player/ui_select.bmp"); //显示“打勾”标签
touch_even = E_NULL;
break;
/* 直接点选歌曲 */
case E_SELECT:
play_index = select_index + ((current_page-1)*8); //根据当前页和select_index确定play_index
player_state = S_SWITCH;
touch_even = E_NULL;
break;
/* 下一页 */
case E_SELT_NEXT:
if(current_page<all_page)
{
current_page++; //更新当前页码
lcd_list(current_page); //刷新LCD列表
}
else
current_page =all_page;
touch_even = E_NULL;
break;
/* 上一页 */
case E_SELT_PREV:
if(current_page>1)
{
current_page--; //更新当前页码
lcd_list(current_page); //刷新LCD列表
}
else
current_page =1;
touch_even = E_NULL;
break;
/* OK */
case E_SELT_OK:
play_index = select_index+8*(current_page-1); //根据当前页和select_index确定play_index
touch_even = E_NULL;
player_state = S_SWITCH;
break;
/* 扬声器 */
case E_LOUD_SPEAK:
if(speaker_flag == 0) //speaker关状态
{
Loud_Speaker_ON(); //开启speaker
speaker_flag =1;
printf("\r\n loud on");
}
else //speaker为开状态
{
Loud_Speaker_OFF(); //关闭speaker
speaker_flag=0;
printf("\r\n loud off");
}
touch_even = E_NULL;
break;
default:
//touch_even = E_NULL;
break;
}
}
