Blog Entry Integrating Wiznet W5100, WIZ811MJ network module with Atmel AVR Microcontroller July 31, 2010 by rwb, under Microcontroller. The rapid penetration of the. Atmel is a leading manufacturer of microcontrollers and touch technology semiconductors for mobile, automotive, industrial, smart energy, lighting, consumer and home. Integrating Wiznet W5. WIZ8. 11. MJ network module with Atmel AVR Microcontroller. The rapid penetration of the internet networks into many of todays modern homes and personal gadgets e. For example by putting a small embedded system web server in our house, we could easily monitor such as alarm, temperature or even turn onoff the lamp or the gardens water sprinkle eventually from any remote location through the wireless personal gadget Or perhaps you just want to impress your relative or friend with a very accurate digital clock which automatically synchronized the time through the Network Time Protocol NTP over the internet at your home or office. All of these interesting and challenging embedded system applications could be accomplished by integrating the Ethernet protocol which is formed the basic of the communication protocol used in the internet into the embedded system. Currently there are several approaches for this solution but basically they could be divided into two categories wired e. Wiznet W5. 10. 0, W5. Microchip ENC2. 8J6. Microchip ZG2. 10. MC Wi Fi module recently is acquired by Microchip from the Zero G Wireless on Jan 1. On this tutorial we are going to build the embedded web server using the Wiznet WIZ8. MJ network module which is based on the Wiznet well known W5. TCPIP hardwired chip that include the ethernet controller physical layer PHY. The WIZ8. 11. MJ network module comes with the Wiznet W5. MAG JACK RJ4. 5 together with the glued logic needed to communicate with the microcontroller through the SPI or bus interface. The reason I choose the Wiznet 5. TCPIP hardwired on it therefore it will make developing the TCPIP protocol stack based application much easier and could be implemented on the small RAM size microcontroller class compared to the firmware TCPIP protocols stack based implementation approach you dont have to know everything about the TCPIP protocol stack in order to be able to use this chip. The other reason is because the Wiznet 5. This chip is used in many commercial applications such as the Arduino framework on their standard Arduino Ethernet shield as shown on this following picture. Ok, now lets list down the necessary electronics components and supported software for this tutorial and make sure you have the AVR ATMega. Resistors 1. 0K Ohm 1, 1. K Ohm 1 and 4. 70 Ohm 2Capacitors 1. AVR-Microcontroller-sdg.jpg' alt='How To Program Microcontroller Atmel' title='How To Program Microcontroller Atmel' />F1. F 2LEDS 3 mm Blue LED 2Transistor 2. N3. 90. 4 1Voltage Regulator IC LM1. Volt. One momentary push button. One 3. 06. 0 mm Prototype board. Two 1. 0 pins male double header and 5 pins male single header. One 2 pins male single polarized header. AVRJazz Mega. 32. Jazz. Mate 5 Volt voltage regulator board from ermicro. Wiznet WIZ8. 11. MJ Network Module. Atmel AVR Studio version 4. IDEWin. AVR AVR GCC 4. Win. AVR 2. 00. 90. Reference Document W5. Datasheet, WIZ8. 11. MJ Datasheet, W5. Porting Guide, Atmel AVR ATMega. Datasheet. The Wiznet W5. Hardwired TCPIP Protocol Chip. Basically the Wiznet W5. IEEE 8. 02. 3 Ethernet physical and data link layer and powerful TCPIP stack inside the chip this make the Wiznet W5. Programming the Wiznet W5. W5. 10. 0 internal registers in order to use the build in TCPIP protocol features. The Wiznet W5. 10. SPI serial peripheral interface, on this tutorial we are going to use the SPI to control the Wiznet W5. You could read more about SPI on my previous posted blog Using Serial Peripheral Interface SPI Master and Slave with Atmel AVR Microcontroller. The basic SPI connection between the Wiznet WIZ8. MJ network module and Atmel AVR ATMega. The Wiznet W5. 10. Crack Real Life Cam on this page. SPI slave device controlled by Atmel AVR ATMega. SPI Master. The SPI protocol need at least four signal i. MOSI Master Out Serial In, MISO Master In Serial Out, SCK signal clock provided by the master and CS the SPI slave chip select. Although the AVR ATMega. SPI modes i. e. 0,1,2 and 3 but the Wiznet W5. SPI common modes mode 0 and mode 3 where it will sample a data on rising edge clock and outputting on the falling edge clock. The W5. 10. 0 chip also provides the interrupt pin, but on this tutorial we dont use the interrupt feature, instead we use a pooling method to control the W5. In order to understand of how we control the Wiznet W5. SPI slave device, we are going to create the W5. ICMP protocol. The following is the complete C code called wiznetping. Wiznet W5. 10. 0 chip. File Name wiznetping. Version 1. 0. Description Wiznet W5. Author RWB. Target AVRJazz Mega. Board. Compiler AVR GCC 4. Win. AVR 2. 00. 90. IDE Atmel AVR Studio 4. Programmer AVRJazz Mega. STK5. 00 v. 2. 0 Bootloader. AVR Visual Studio 4. STK5. 00 programmer. Last Updated 0. July 2. BAUDRATE 1. 92. 00 AVRJazz Mega. SPI IO. define SPIPORT PORTB. SPIDDR DDRB. define SPICS PORTB2 Wiznet W5. Op Codedefine WIZNETWRITEOPCODE 0x. F0. define WIZNETREADOPCODE 0x. F Wiznet W5. 10. Register Addresses. MR 0x. 00. 00 Mode Register. GAR 0x. 00. 01 Gateway Address 0x. SUBR 0x. 00. 05 Subnet mask Address 0x. SAR 0x. 00. 09 Source Hardware Address MAC 0x. E. define SIPR 0x. F Source IP Address 0x. F to 0x. 00. 12. define RMSR 0x. A RX Memory Size Register. TMSR 0x. 00. 1B TX Memory Size Registervoid uartinitvoid. UBRR0. H FCPUBAUDRATE1. UBRR0. L FCPUBAUDRATE1. UCSR0. B 1lt lt RXEN01lt lt TXEN0 enable Rx Tx. UCSR0. C 1lt lt UCSZ0. UCSZ0. 0 config USART 8. N1. void uartflushvoid. UCSR0. A 1lt lt RXC0 dummy UDR0. FILE tream. if ch n. UCSR0. A 1lt lt UDRE0. UDR0ch return 0. FILE tream. UCSR0. A 1lt lt RXC0. Echo the Output Back to terminal. ANSI clear screen clEHEJ. H. putchar. J. void ansimevoid. ANSI turn off all attribute meE0m. SPIWriteunsigned int addr,unsigned char data. Activate the CS pin. SPIPORT 1lt lt SPICS Start Wiznet W5. Write Op. Code transmission. SPDR WIZNETWRITEOPCODE Wait for transmission complete. SPSR 1lt lt SPIF Start Wiznet W5. Address High Bytes transmission. SPDR addr 0x. FF0. Wait for transmission complete. SPSR 1lt lt SPIF Start Wiznet W5. Address Low Bytes transmission. SPDR addr 0x. FF Wait for transmission complete. SPSR 1lt lt SPIF. Start Data transmission. SPDR data Wait for transmission complete. SPSR 1lt lt SPIF CS pin is not active. SPIPORT 1lt lt SPICS. SPIReadunsigned int addr. Activate the CS pin. SPIPORT 1lt lt SPICS Start Wiznet W5. Read Op. Code transmission. SPDR WIZNETREADOPCODE Wait for transmission complete. SPSR 1lt lt SPIF Start Wiznet W5. Address High Bytes transmission. SPDR addr 0x. FF0. Wait for transmission complete. SPSR 1lt lt SPIF Start Wiznet W5. Address Low Bytes transmission. SPDR addr 0x. FF Wait for transmission complete. SPSR 1lt lt SPIF. Send Dummy transmission for reading the data. SPDR 0x. 00 Wait for transmission complete. SPSR 1lt lt SPIF. CS pin is not active. SPIPORT 1lt lt SPICS returnSPDR. W5. 10. 0Initvoid. Ethernet Setup. unsigned char macaddr 0x. DE,0x. 58,0x. F6. Setting the Wiznet W5. Mode Register 0x. SPIWriteMR,0x. 80 MR 0b. Reading MR dnn,SPIReadMR Setting the Wiznet W5. Gateway Address GAR 0x. Setting Gateway Address d. SPIWriteGAR 0,gtwaddr0. SPIWriteGAR 1,gtwaddr1. SPIWriteGAR 2,gtwaddr2. SPIWriteGAR 3,gtwaddr3. Reading GAR d. d. SPIReadGAR 0,SPIReadGAR 1,.