[参考译文] TMS570LS3137-EP：TMS570LS3137-EP

[引用 userid="473648" URL"~/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1057283/tms570ls3137-ep-tms570ls3137-ep/3910990 #3910990"]

从 DSP 传输的正常帧中的 MAC 源地址是什么？

[/报价]

正常帧中的 MAC 源地址位于 软件编程到存储器中的数据包缓冲区中、并指向 发送缓冲区描述符中。

从 HALCoGen emac.h 头文件中：

/* Struct used to take packet data input from the user for transmit APIs. */
typedef struct pbuf_struct {
  /** next pbuf in singly linked pbuf chain */
  struct pbuf_struct *next;

  /**
  * Pointer to the actual ethernet packet/packet fragment to be transmitted.
  * The packet needs to be in the following format:
  * |Destination MAC Address (6 bytes)| Source MAC Address (6 bytes)| Length/Type (2 bytes)| Data (46- 1500 bytes)
  * The data can be split up over multiple pbufs which are linked as a linked list.
  **/
  uint8 *payload;

  /**
   * total length of this buffer and all next buffers in chain
   * belonging to the same packet.
   *
   * For non-queue packet chains this is the invariant:
   * p->tot_len == p->len + (p->next? p->next->tot_len: 0)
   */
  uint16 tot_len;

  /** length of this buffer */
  uint16 len;

}pbuf_t;