intmain(void){u8AUDIO_BUF[6]={0xAA,0x07,0x02,0x00,0x07,0xBA};delay_init();//延时函数初始化NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//设置NVIC中断分组2:2位抢占优先级，2位响应优先级uart_init(115200);//串口初始化为115200LED_Init();//LED端口初始化KEY_Init();//初始化与按键连接的硬件接口AUDIO_VOL();//设置音量20AUDIO_PLAY(AUDI