void network_send_end(uint16_t len, uint8_t *buf) {
if (len > 0)
{
enc28j60PacketSendReset();
enc28j60WriteBuffer(len,buf);
}
enc28j60PacketSendEnd();
}
/******************************************************************************
* Function: void SOCKETWriteBuffer(unsigned char* _buf, unsigned int _size, unsigned int _start)
*
* PreCondition: none
*
* Input: *_buf: buffer to write data
* _size: amount data to write
* _start: socket's buffer start address
*
* Output: None
*
* Side Effects: None
*
* Overview: Writes bytes to Socket RX/TX Buffer space
*
* Note: None
*****************************************************************************/
void SOCKETWriteBuffer(unsigned char* _buf, unsigned int _size, unsigned int _start)
{
// Set the write pointer to start of socket buffer area
enc28j60Write(EWRPTL, low(_start));
enc28j60Write(EWRPTH, high(_start));
// copy the packet into the socket buffer
enc28j60WriteBuffer(_size, _buf);
}
void vram_write(U8 pointer, U8 *data, U8 len)
{
// Check the lenght
if(len >= vramBUF_len)
return;
// Set the write pointer to start of transmit buffer area
enc28j60WriteWord(EWRPTL, vramBUF_start + pointer);
// Load data into the ENC28J60 RAM
enc28j60WriteBuffer(len, data);
}
/******************************************************************************
* Function: void MACWriteTXBufferOffset(unsigned char* _buf, unsigned int _size, unsigned int offset_len)
*
* PreCondition: none
*
* Input: *_buf: buffer to write data
* _size: amount data to write
* offset:memory pointer to write data
*
* Output: None
*
* Side Effects: None
*
* Overview: Writes bytes to TX Buffer space and skips offset
*
* Note: None
*****************************************************************************/
void MACWriteTXBufferOffset(unsigned char* _buf, unsigned int _size, unsigned int offset_len)
{
// calc offset
unsigned int offsetStart = TXSTART_INIT + offset_len;
unsigned int offsetEnd = offsetStart + _size;
// Set the write pointer to start of transmit buffer area
enc28j60Write(EWRPTL, low(offsetStart));
enc28j60Write(EWRPTH, high(offsetStart));
// Set the TXND pointer to correspond to the packet size given
enc28j60Write(ETXNDL, low(offsetEnd));
enc28j60Write(ETXNDH, high(offsetEnd));
// write per-packet control byte (0x00 means use macon3 settings)
enc28j60WriteOp(ENC28J60_WRITE_BUF_MEM, 0, 0x00);
// copy the packet into the transmit buffer
enc28j60WriteBuffer(_size, _buf);
}