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w5100.h
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w5100.h
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/*
* Copyright (c) 2013, WIZnet Co., Ltd.
* Copyright (c) 2016, Nicholas Humfrey
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the copyright holder 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 HOLDER 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.
*
*/
#ifndef W5100_H
#define W5100_H
#include <stdint.h>
#include <Arduino.h>
class Wiznet5100 {
public:
/**
* Constructor that uses the default hardware SPI pins
* @param cs the Arduino Chip Select / Slave Select pin (default 10)
*/
Wiznet5100(int8_t cs=SS);
/**
* Initialise the Ethernet controller
* Must be called before sending or receiving Ethernet frames
*
* @param address the local MAC address for the Ethernet interface
* @return Returns true if setting up the Ethernet interface was successful
*/
boolean begin(const uint8_t *address);
/**
* Shut down the Ethernet controlled
*/
void end();
/**
* Send an Ethernet frame
* @param data a pointer to the data to send
* @param datalen the length of the data in the packet
* @return the number of bytes transmitted
*/
uint16_t sendFrame(const uint8_t *data, uint16_t datalen);
/**
* Read an Ethernet frame
* @param buffer a pointer to a buffer to write the packet to
* @param bufsize the available space in the buffer
* @return the length of the received packet
* or 0 if no packet was received
*/
uint16_t readFrame(uint8_t *buffer, uint16_t bufsize);
private:
static const uint16_t TxBufferAddress = 0x4000; /* Internal Tx buffer address of the iinchip */
static const uint16_t RxBufferAddress = 0x6000; /* Internal Rx buffer address of the iinchip */
static const uint8_t TxBufferSize = 0x3; /* Buffer size configuration: 0=1kb, 1=2kB, 2=4kB, 3=8kB */
static const uint8_t RxBufferSize = 0x3; /* Buffer size configuration: 0=1kb, 1=2kB, 2=4kB, 3=8kB */
static const uint16_t TxBufferLength = (1 << TxBufferSize) << 10; /* Length of Tx buffer in bytes */
static const uint16_t RxBufferLength = (1 << RxBufferSize) << 10; /* Length of Rx buffer in bytes */
static const uint16_t TxBufferMask = TxBufferLength - 1;
static const uint16_t RxBufferMask = RxBufferLength - 1;
int8_t _cs;
uint8_t _mac_address[6];
/**
* Default function to select chip.
* @note This function help not to access wrong address. If you do not describe this function or register any functions,
* null function is called.
*/
inline void wizchip_cs_select()
{
digitalWrite(_cs, LOW);
}
/**
* Default function to deselect chip.
* @note This function help not to access wrong address. If you do not describe this function or register any functions,
* null function is called.
*/
inline void wizchip_cs_deselect()
{
digitalWrite(_cs, HIGH);
}
/**
* Read a 1 byte value from a register.
* @param address Register address
* @return The value of register
*/
uint8_t wizchip_read(uint16_t address);
/**
* Reads a 2 byte value from a register.
* @param address Register address
* @return The value of register
*/
uint16_t wizchip_read_word(uint16_t address);
/**
* It reads sequence data from registers.
* @param address Register address
* @param pBuf Pointer buffer to read data
* @param len Data length
*/
void wizchip_read_buf(uint16_t address, uint8_t* pBuf, uint16_t len);
/**
* Write a 1 byte value to a register.
* @param address Register address
* @param wb Write data
* @return void
*/
void wizchip_write(uint16_t address, uint8_t wb);
/**
* Write a 2 byte value to a register.
* @param address Register address
* @param wb Write data
* @return void
*/
void wizchip_write_word(uint16_t address, uint16_t word);
/**
* It writes sequence data to registers.
* @param address Register address
* @param pBuf Pointer buffer to write data
* @param len Data length
*/
void wizchip_write_buf(uint16_t address, const uint8_t* pBuf, uint16_t len);
/**
* Reset WIZCHIP by softly.
*/
void wizchip_sw_reset(void);
/**
* It copies data to internal TX memory
*
* @details This function reads the Tx write pointer register and after that,
* it copies the <i>wizdata(pointer buffer)</i> of the length of <i>len(variable)</i> bytes to internal TX memory
* and updates the Tx write pointer register.
* This function is being called by send() and sendto() function also.
*
* @param wizdata Pointer buffer to write data
* @param len Data length
* @sa wizchip_recv_data()
*/
void wizchip_send_data(const uint8_t *wizdata, uint16_t len);
/**
* It copies data to your buffer from internal RX memory
*
* @details This function read the Rx read pointer register and after that,
* it copies the received data from internal RX memory
* to <i>wizdata(pointer variable)</i> of the length of <i>len(variable)</i> bytes.
* This function is being called by recv() also.
*
* @param wizdata Pointer buffer to read data
* @param len Data length
* @sa wizchip_send_data()
*/
void wizchip_recv_data(uint8_t *wizdata, uint16_t len);
/**
* It discard the received data in RX memory.
* @details It discards the data of the length of <i>len(variable)</i> bytes in internal RX memory.
* @param len Data length
*/
void wizchip_recv_ignore(uint16_t len);
/**
* Get @ref Sn_TX_FSR register
* @return uint16_t. Value of @ref Sn_TX_FSR.
*/
uint16_t getSn_TX_FSR();
/**
* Get @ref Sn_RX_RSR register
* @return uint16_t. Value of @ref Sn_RX_RSR.
*/
uint16_t getSn_RX_RSR();
/** Common registers */
enum {
MR = 0x0000, ///< Mode Register address (R/W)
GAR = 0x0001, ///< Gateway IP Register address (R/W)
SUBR = 0x0005, ///< Subnet mask Register address (R/W)
SHAR = 0x0009, ///< Source MAC Register address (R/W)
SIPR = 0x000F, ///< Source IP Register address (R/W)
IR = 0x0015, ///< Interrupt Register (R/W)
IMR = 0x0016, ///< Socket Interrupt Mask Register (R/W)
RTR = 0x0017, ///< Timeout register address (1 is 100us) (R/W)
RCR = 0x0019, ///< Retry count register (R/W)
RMSR = 0x001A, ///< Receive Memory Size
TMSR = 0x001B, ///< Transmit Memory Size
};
/** Socket registers */
enum {
Sn_MR = 0x0400, ///< Socket Mode register(R/W)
Sn_CR = 0x0401, ///< Socket command register (R/W)
Sn_IR = 0x0402, ///< Socket interrupt register (R)
Sn_SR = 0x0403, ///< Socket status register (R)
Sn_PORT = 0x0404, ///< Source port register (R/W)
Sn_DHAR = 0x0406, ///< Peer MAC register address (R/W)
Sn_DIPR = 0x040C, ///< Peer IP register address (R/W)
Sn_DPORT = 0x0410, ///< Peer port register address (R/W)
Sn_MSSR = 0x0412, ///< Maximum Segment Size(Sn_MSSR0) register address (R/W)
Sn_PROTO = 0x0414, ///< IP Protocol(PROTO) Register (R/W)
Sn_TOS = 0x0415, ///< IP Type of Service(TOS) Register (R/W)
Sn_TTL = 0x0416, ///< IP Time to live(TTL) Register (R/W)
Sn_TX_FSR = 0x0420, ///< Transmit free memory size register (R)
Sn_TX_RD = 0x0422, ///< Transmit memory read pointer register address (R)
Sn_TX_WR = 0x0424, ///< Transmit memory write pointer register address (R/W)
Sn_RX_RSR = 0x0426, ///< Received data size register (R)
Sn_RX_RD = 0x0428, ///< Read point of Receive memory (R/W)
Sn_RX_WR = 0x042A, ///< Write point of Receive memory (R)
};
/** Mode register values */
enum {
MR_RST = 0x80, ///< Reset
MR_PB = 0x10, ///< Ping block
MR_AI = 0x02, ///< Address Auto-Increment in Indirect Bus Interface
MR_IND = 0x01, ///< Indirect Bus Interface mode
};
/** Socket Mode Register values @ref Sn_MR */
enum {
Sn_MR_CLOSE = 0x00, ///< Unused socket
Sn_MR_TCP = 0x01, ///< TCP
Sn_MR_UDP = 0x02, ///< UDP
Sn_MR_IPRAW = 0x03, ///< IP LAYER RAW SOCK
Sn_MR_MACRAW = 0x04, ///< MAC LAYER RAW SOCK
Sn_MR_ND = 0x20, ///< No Delayed Ack(TCP) flag
Sn_MR_MF = 0x40, ///< Use MAC filter
Sn_MR_MULTI = 0x80, ///< support multicating
};
/** Socket Command Register values */
enum {
Sn_CR_OPEN = 0x01, ///< Initialise or open socket
Sn_CR_CLOSE = 0x10, ///< Close socket
Sn_CR_SEND = 0x20, ///< Update TX buffer pointer and send data
Sn_CR_SEND_MAC = 0x21, ///< Send data with MAC address, so without ARP process
Sn_CR_SEND_KEEP = 0x22, ///< Send keep alive message
Sn_CR_RECV = 0x40, ///< Update RX buffer pointer and receive data
};
/** Socket Interrupt register values */
enum {
Sn_IR_CON = 0x01, ///< CON Interrupt
Sn_IR_DISCON = 0x02, ///< DISCON Interrupt
Sn_IR_RECV = 0x04, ///< RECV Interrupt
Sn_IR_TIMEOUT = 0x08, ///< TIMEOUT Interrupt
Sn_IR_SENDOK = 0x10, ///< SEND_OK Interrupt
};
/** Socket Status Register values */
enum {
SOCK_CLOSED = 0x00, ///< Closed
SOCK_INIT = 0x13, ///< Initiate state
SOCK_LISTEN = 0x14, ///< Listen state
SOCK_SYNSENT = 0x15, ///< Connection state
SOCK_SYNRECV = 0x16, ///< Connection state
SOCK_ESTABLISHED = 0x17, ///< Success to connect
SOCK_FIN_WAIT = 0x18, ///< Closing state
SOCK_CLOSING = 0x1A, ///< Closing state
SOCK_TIME_WAIT = 0x1B, ///< Closing state
SOCK_CLOSE_WAIT = 0x1C, ///< Closing state
SOCK_LAST_ACK = 0x1D, ///< Closing state
SOCK_UDP = 0x22, ///< UDP socket
SOCK_IPRAW = 0x32, ///< IP raw mode socket
SOCK_MACRAW = 0x42, ///< MAC raw mode socket
};
/**
* Set Mode Register
* @param (uint8_t)mr The value to be set.
* @sa getMR()
*/
inline void setMR(uint8_t mode) {
wizchip_write(MR, mode);
}
/**
* Get Mode Register
* @return uint8_t. The value of Mode register.
* @sa setMR()
*/
inline uint8_t getMR() {
return wizchip_read(MR);
}
/**
* Set local MAC address
* @param (uint8_t*)shar Pointer variable to set local MAC address. It should be allocated 6 bytes.
* @sa getSHAR()
*/
inline void setSHAR(const uint8_t* macaddr) {
wizchip_write_buf(SHAR, macaddr, 6);
}
/**
* Get local MAC address
* @param (uint8_t*)shar Pointer variable to get local MAC address. It should be allocated 6 bytes.
* @sa setSHAR()
*/
inline void getSHAR(uint8_t* macaddr) {
wizchip_read_buf(SHAR, macaddr, 6);
}
/**
* Get @ref Sn_TX_WR register
* @param (uint16_t)txwr Value to set @ref Sn_TX_WR
* @sa GetSn_TX_WR()
*/
inline uint16_t getSn_TX_WR() {
return wizchip_read_word(Sn_TX_WR);
}
/**
* Set @ref Sn_TX_WR register
* @param (uint16_t)txwr Value to set @ref Sn_TX_WR
* @sa GetSn_TX_WR()
*/
inline void setSn_TX_WR(uint16_t txwr) {
wizchip_write_word(Sn_TX_WR, txwr);
}
/**
* Get @ref Sn_RX_RD register
* @regurn uint16_t. Value of @ref Sn_RX_RD.
* @sa setSn_RX_RD()
*/
inline uint16_t getSn_RX_RD() {
return wizchip_read_word(Sn_RX_RD);
}
/**
* Set @ref Sn_RX_RD register
* @param (uint16_t)rxrd Value to set @ref Sn_RX_RD
* @sa getSn_RX_RD()
*/
inline void setSn_RX_RD(uint16_t rxrd) {
wizchip_write_word(Sn_RX_RD, rxrd);
}
/**
* Set @ref Sn_MR register
* @param (uint8_t)mr Value to set @ref Sn_MR
* @sa getSn_MR()
*/
inline void setSn_MR(uint8_t mr) {
wizchip_write(Sn_MR, mr);
}
/**
* Get @ref Sn_MR register
* @return uint8_t. Value of @ref Sn_MR.
* @sa setSn_MR()
*/
inline uint8_t getSn_MR() {
return wizchip_read(Sn_MR);
}
/**
* Set @ref Sn_CR register, then wait for the command to execute
* @param (uint8_t)cr Value to set @ref Sn_CR
* @sa getSn_CR()
*/
void setSn_CR(uint8_t cr);
/**
* Get @ref Sn_CR register
* @return uint8_t. Value of @ref Sn_CR.
* @sa setSn_CR()
*/
inline uint8_t getSn_CR() {
return wizchip_read(Sn_CR);
}
/**
* Get @ref Sn_SR register
* @return uint8_t. Value of @ref Sn_SR.
*/
inline uint8_t getSn_SR() {
return wizchip_read(Sn_SR);
}
/**
* Get @ref Sn_IR register
* @return uint8_t. Value of @ref Sn_IR.
* @sa setSn_IR()
*/
inline uint8_t getSn_IR() {
return wizchip_read(Sn_IR);
}
/**
* Set @ref Sn_IR register
* @param (uint8_t)ir Value to set @ref Sn_IR
* @sa getSn_IR()
*/
inline void setSn_IR(uint8_t ir) {
wizchip_write(Sn_IR, ir);
}
};
#endif // W5100_H