stm32传wav文件问题

stm32是一款微控制芯片，可以进行音频处理与传输，但是传输wav文件需要进行AD/DA转换，同时需要使用一些库函数来解析文件格式和读取数据，因此需要进行一些复杂的编程。一种简单的方法是圆余清将wav文件转换为16位PCM编码格式，并将橘前数据存储在数组中，再通过stm32进行播放或传输。同时，需要注意文件大小和存储毁洞空间的限制，以避免内存过载_

文件：mian.c

//功能：串口初始化、打开定时器中断，然后一直接收数据状态就好了。发送在中断中实现

#include "stm32f10x.h"

#include "usart.h"

u8 USART_rx_data

int main(void)

{

RCC_Configuration() /和中巧/系统时钟配置

GPIO_Configuration() //端口初始化

NVIC_Configuration() //中断源配置

USART_Configuration()/培念/串口1初始化

Time_Init() //唤键定时器初始化

#ifdef DEBUG

debug()

#endif

TIM_Cmd(TIM3,ENABLE)

while(1)

{

}

}

第一步：用tftpserver.c中的err_t tftp_send_message(struct udp_pcb *upcb, struct ip_addr *to_ip, int to_port, char *buf, int buflen)向指定地址发送写文件请求侍饥锋；

第二步：用tftpserver.c中的void process_tftp_request(struct pbuf *pkt_buf, struct ip_addr *addr, u16_t port)函数处理回应，如果接收到回应后，process_tftp_request函数中的int tftp_process_write(struct udp_pcb *upcb, struct ip_addr *to, int to_port, char *FileName)函数发送数据文件。

基本流程就是上述所说，肢团但是tftp_send_message()函数中的参数struct udp_pcb *upcb，数据结构非常复老晌杂

struct udp_pcb {

/* Common members of all PCB types */

IP_PCB

/* Protocol specific PCB members */

struct udp_pcb *next

u8_t flags

/* ports are in host byte order */

u16_t local_port, remote_port

#if LWIP_IGMP

/* outgoing network interface for multicast packets */

struct ip_addr multicast_ip

#endif /* LWIP_IGMP */

#if LWIP_UDPLITE

/* used for UDP_LITE only */

u16_t chksum_len_rx, chksum_len_tx

#endif /* LWIP_UDPLITE */

/* receive callback function

* addr and port are in same byte order as in the pcb

* The callback is responsible for freeing the pbuf

* if it's not used any more.

*

* ATTENTION: Be aware that 'addr' points into the pbuf 'p' so freeing this pbuf

*makes 'addr' invalid, too.

*

* @param arg user supplied argument (udp_pcb.recv_arg)

* @param pcb the udp_pcb which received data

* @param p the packet buffer that was received

* @param addr the remote IP address from which the packet was received

* @param port the remote port from which the packet was received

*/

void (* recv)(void *arg, struct udp_pcb *pcb, struct pbuf *p,

struct ip_addr *addr, u16_t port)

/* user-supplied argument for the recv callback */

void *recv_arg

}

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