[lwip-users] Compile Errors

[Eric Shufro]

Compile errors in cs8900.c (contrib.)

The problem is in the while loop below this if, where  ptr is no longer in
scope?


if ((PPDATA & 0x0100U/*Rdy4TxNOW*/) != 0)
  {
        unsigned long sent_bytes = 0;
    /* q traverses through linked list of pbuf's
     * This list MUST consist of a single packet ONLY */
    struct pbuf *q;
    for (q = p; q != NULL; q = q->next)
    {
      u16_t i;
      u16_t *ptr = (u16_t *)q->payload;
      /* Send the data from the pbuf to the interface, one pbuf at a
       * time. The size of the data in each pbuf is kept in the ->len
       * variable.
       */
      for (i = 0; i < q->len; i += 2)
      {
        /** TODO: this routine assumes 16-bit boundary pbufs... */
        RXTXREG = *ptr++;
        sent_bytes += 2;
      }
    }
    /* provide any additional padding to comply with minimum Ethernet
     * frame length (RFC10242) */
    /*

//changed (commented the while loop out
while (sent_bytes < ETH_MIN_FRAME_LEN)  
{

        //since the cs8900 can provide its own frame padding
        //and ptr is a source of compile time syntax errors
      RXTXREG = *ptr++;
sent_bytes += 2;
} */
    /* 


--eric