Enc28j60-avr - Set of tools to operate the ENC28J60 using an AVR microcontroller

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enc28j60-avr is a set of tools created to operate the Microchip ENC28J60 (Stand-Alone Ethernet Controller with SPI Interface) using any SPI-capable AVR microcontroller. If your microcontroller doesn't feature a dedicated SPI module, you may even bit bang it. The libraries are intended to be compiled/archived on a Linux system using avr-gcc, avr-binutils and AVR Libc. It will also work on Windows using WinAVR. With enc28j60-avr libraries, including network capabilities in an embedded, microcontroller hardware project becomes easy. The ENC28J60 chip alone is a bit tricky to work with, but dozens of prebuilt modules may be ordered from the Internet. The project, a set of 4 libraries, is currently under active development (i.e. not finished!). Here is the dependency diagram of enc28j60-avr constituents (an arrow from A to B meaning "A depends on B"): As you can see, libenc28j60d and libbanepro are independant: they only depend on AVR Libc, the C standard library for AVR C projets, which is not part of this project. Here is a more complete description of each library. libenc28j60d: driverThis basic set of functions is at the core of ENC28J60 control. It implements the communication layer between an AVR microcontroller and the actual ENC28J60 chip. The following commands, as described in the datasheet (section 4.2), are included in libenc28j60d: Read Control Register Read Buffer Memory Write Control Register Write Buffer Memory Bit Field Set Bit Field Clear System Reset All you need to do is provide the library with SPI read and write functions, since not all AVR microcontrollers interface their SPI module the same way. libenc28j60fw: frameworklibenc28j60fw is used to perform higher level functions with the chip such as: read/write from/to an 8-bit/16-bit control register read/write from/to a PHY register bitfield set/clear on a control register set device's MAC address set RX/TX buffers sizes check for new packet or if transmission is done perform an easy initialization handle reception/transmission prologues/epilogues configure interrupts The library needs and uses libenc28j60d for underlying low-level operations. libbanepro: basic network protocolslibbanepro consists mostly of analysis and formatting functions. It currently partially supports the following network protocols: Ethernet II and 802.3: known EtherTypes are IPv4, ICMP and ARP IPv4: known types are TCP and UDP ICMP: known types are Echo Reply and Echo Request ARP: reply and request are supported UDP This library does not need libenc28j60d or libenc28j60fw. It may thus be used in any other AVR project using other network components. Its only purpose is to analyse a buffer and to store information about it in structures. The structures can also be filled by user and formatted to a buffer. Internet checksums (mostly for ICMP and UDP) can be computed by the library. libbanepro does not support TCP right now. libipkats: IP stackThis IP stack depends on the three other libraries because it acts as a bridge between them. It handles lots of actions automatically (ARP reply/request/table, ICMP Echo (ping) Reply, etc.). Give it an UDP callback, call its main function when a new packet interrupt rises and you're pretty done! That's right — we said easy. More information coming soon!




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