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// dpgeorge: this file taken from w5500/w5500.c and adapted to W5200
//*****************************************************************************
//
//! \file w5500.c
//! \brief W5500 HAL Interface.
//! \version 1.0.1
//! \date 2013/10/21
//! \par Revision history
//! <2014/05/01> V1.0.2
//! 1. Implicit type casting -> Explicit type casting. Refer to M20140501
//! Fixed the problem on porting into under 32bit MCU
//! Issued by Mathias ClauBen, wizwiki forum ID Think01 and bobh
//! Thank for your interesting and serious advices.
//! <2013/10/21> 1st Release
//! <2013/12/20> V1.0.1
//! 1. Remove warning
//! 2. WIZCHIP_READ_BUF WIZCHIP_WRITE_BUF in case _WIZCHIP_IO_MODE_SPI_FDM_
//! for loop optimized(removed). refer to M20131220
//! \author MidnightCow
//! \copyright
//!
//! Copyright (c) 2013, WIZnet Co., LTD.
//! All rights reserved.
//!
//! Redistribution and use in source and binary forms, with or without
//! modification, are permitted provided that the following conditions
//! are met:
//!
//! * Redistributions of source code must retain the above copyright
//! notice, this list of conditions and the following disclaimer.
//! * Redistributions in binary form must reproduce the above copyright
//! notice, this list of conditions and the following disclaimer in the
//! documentation and/or other materials provided with the distribution.
//! * Neither the name of the <ORGANIZATION> nor the names of its
//! contributors may be used to endorse or promote products derived
//! from this software without specific prior written permission.
//!
//! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
//! AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
//! IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
//! ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
//! LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
//! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
//! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
//! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
//! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
//! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
//! THE POSSIBILITY OF SUCH DAMAGE.
//
//*****************************************************************************
#include "w5200.h"
#define SMASK (0x7ff) /* tx buffer mask */
#define RMASK (0x7ff) /* rx buffer mask */
#define SSIZE (2048) /* max tx buffer size */
#define RSIZE (2048) /* max rx buffer size */
#define TXBUF_BASE (0x8000)
#define RXBUF_BASE (0xc000)
#define SBASE(sn) (TXBUF_BASE + SSIZE * (sn)) /* tx buffer base for socket sn */
#define RBASE(sn) (RXBUF_BASE + RSIZE * (sn)) /* rx buffer base for socket sn */
uint8_t WIZCHIP_READ(uint32_t AddrSel) {
WIZCHIP_CRITICAL_ENTER();
WIZCHIP.CS._select();
uint8_t spi_data[4] = {
AddrSel >> 8,
AddrSel,
0x00,
0x01,
};
WIZCHIP.IF.SPI._write_bytes(spi_data, 4);
uint8_t ret;
WIZCHIP.IF.SPI._read_bytes(&ret, 1);
WIZCHIP.CS._deselect();
WIZCHIP_CRITICAL_EXIT();
return ret;
}
void WIZCHIP_WRITE(uint32_t AddrSel, uint8_t wb) {
WIZCHIP_CRITICAL_ENTER();
WIZCHIP.CS._select();
uint8_t spi_data[5] = {
AddrSel >> 8,
AddrSel,
0x80,
0x01,
wb,
};
WIZCHIP.IF.SPI._write_bytes(spi_data, 5);
WIZCHIP.CS._deselect();
WIZCHIP_CRITICAL_EXIT();
}
void WIZCHIP_READ_BUF(uint32_t AddrSel, uint8_t* pBuf, uint16_t len) {
WIZCHIP_CRITICAL_ENTER();
WIZCHIP.CS._select();
uint8_t spi_data[4] = {
AddrSel >> 8,
AddrSel,
0x00 | ((len >> 8) & 0x7f),
len & 0xff,
};
WIZCHIP.IF.SPI._write_bytes(spi_data, 4);
WIZCHIP.IF.SPI._read_bytes(pBuf, len);
WIZCHIP.CS._deselect();
WIZCHIP_CRITICAL_EXIT();
}
void WIZCHIP_WRITE_BUF(uint32_t AddrSel, uint8_t* pBuf, uint16_t len) {
WIZCHIP_CRITICAL_ENTER();
WIZCHIP.CS._select();
uint8_t spi_data[4] = {
AddrSel >> 8,
AddrSel,
0x80 | ((len >> 8) & 0x7f),
len & 0xff,
};
WIZCHIP.IF.SPI._write_bytes(spi_data, 4);
WIZCHIP.IF.SPI._write_bytes(pBuf, len);
WIZCHIP.CS._deselect();
WIZCHIP_CRITICAL_EXIT();
}
uint16_t getSn_TX_FSR(uint8_t sn) {
uint16_t val = 0, val1 = 0;
do {
val1 = (WIZCHIP_READ(Sn_TX_FSR(sn)) << 8) | WIZCHIP_READ(Sn_TX_FSR(sn) + 1);
if (val1 != 0) {
val = (WIZCHIP_READ(Sn_TX_FSR(sn)) << 8) | WIZCHIP_READ(Sn_TX_FSR(sn) + 1);
}
} while (val != val1);
return val;
}
uint16_t getSn_RX_RSR(uint8_t sn) {
uint16_t val = 0, val1 = 0;
do {
val1 = (WIZCHIP_READ(Sn_RX_RSR(sn)) << 8) | WIZCHIP_READ(Sn_RX_RSR(sn) + 1);
if (val1 != 0) {
val = (WIZCHIP_READ(Sn_RX_RSR(sn)) << 8) | WIZCHIP_READ(Sn_RX_RSR(sn) + 1);
}
} while (val != val1);
return val;
}
void wiz_send_data(uint8_t sn, uint8_t *wizdata, uint16_t len) {
if (len == 0) {
return;
}
uint16_t ptr = getSn_TX_WR(sn);
uint16_t offset = ptr & SMASK;
uint32_t addr = offset + SBASE(sn);
if (offset + len > SSIZE) {
// implement wrap-around circular buffer
uint16_t size = SSIZE - offset;
WIZCHIP_WRITE_BUF(addr, wizdata, size);
WIZCHIP_WRITE_BUF(SBASE(sn), wizdata + size, len - size);
} else {
WIZCHIP_WRITE_BUF(addr, wizdata, len);
}
ptr += len;
setSn_TX_WR(sn, ptr);
}
void wiz_recv_data(uint8_t sn, uint8_t *wizdata, uint16_t len) {
if (len == 0) {
return;
}
uint16_t ptr = getSn_RX_RD(sn);
uint16_t offset = ptr & RMASK;
uint16_t addr = RBASE(sn) + offset;
if (offset + len > RSIZE) {
// implement wrap-around circular buffer
uint16_t size = RSIZE - offset;
WIZCHIP_READ_BUF(addr, wizdata, size);
WIZCHIP_READ_BUF(RBASE(sn), wizdata + size, len - size);
} else {
WIZCHIP_READ_BUF(addr, wizdata, len);
}
ptr += len;
setSn_RX_RD(sn, ptr);
}
void wiz_recv_ignore(uint8_t sn, uint16_t len) {
uint16_t ptr = getSn_RX_RD(sn);
ptr += len;
setSn_RX_RD(sn, ptr);
}
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