ETHERNETDK Silicon Laboratories Inc, ETHERNETDK Datasheet - Page 25

• Manufacturer Part Number: ETHERNETDK
• Description: KIT DEV EMBEDDED ETHERNET
• Manufacturer: Silicon Laboratories Inc
• Type: Controllers & Processorsr

Specifications of ETHERNETDK

• Main Purpose: Interface, Ethernet
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: C8051F120
• Primary Attributes: CMX-MicroNet TCP/IP Protocol Stack
• Interface Type: RS-232, Ethernet
• Product: Modules
• For Use With/related Products: C8051F120, CP2200
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Secondary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1284

6.3. Stage 3—Configuring MAC and IP Addresses over the Serial Port
In the first two stages of the demo, we learned how to generate firmware for an embedded web server using the
TCP/IP Configuration Wizard and access the embedded server from a web browser. In this stage, we will learn
how to dynamically configure the IP address over the serial port.
6.3.1. Configuring the Target Board Jumpers for UART communication.
To enable UART communication on the C8051F120 Target Board, jumpers J6 and J9 must be shorted. See
Figure 27 for the location of J6 and J9.
6.3.2. Modifying the Firmware to Enable the Serial Port
The simple web server firmware generated by the TCP/IP Configuration Wizard does not support configuring the IP
address over the serial port. In order to configure the MCU using the serial port, the firmware must be modified.
The web-server-3 project in the examples folder has been created to demonstrate an example of configuration
using the serial port. The following list outlines the functionality that has been added to web-server-3:
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The following instructions show how to load the web-server-3 project:
VDD Monitor is enabled as a reset source because firmware needs to write/erase Flash memory.
UART1 Initialization routine uses Timer 1 for baud rate generation.
UART1 is assigned to P0.0 and P0.1 in the Crossbar.
The stdio.h header file is included to allow use of string formatting functions such as printf().
The ipconfig() routine is used to configure the MAC address.
The global ip_address[4] variables is added in the Scratchpad area of Flash to store the programmed MAC
Address. The Scratchpad area is used to store the variable because it can be erased and re-written without
interfering with program code.
The global first_time variable is stored in Flash to keep track of whether the IP address has been programmed.
1. Halt the MCU by clicking the Stop button in the toolbar, selecting DebugStop from the menu, or pressing the
2. Close the current open project using the ProjectClose Project menu command.
3. Open the web-server-3 project using the ProjectOpen Project menu command. The web-server-3 project
4. Build the project. This can be done by clicking on the Build/Make Project button in the toolbar, selecting
5. If not already connected, click the Connect button in the toolbar or select DebugConnect from the menu.
6. Download the project to the target by clicking the Download Code button
7. Run the demo by clicking the Go button in the toolbar, selecting DebugGo from the menu, or pressing the
shortcut key F4.
workspace is located by default in C:\SiLabs\MCU\Examples\C8051F12x_13x\Ethernet\HTTP\web-server-3
directory.
ProjectBuild/Make Project from the menu, or pressing the F7 shortcut key.
Note: If you receive the error message “Communication could not be established with the specified serial
adapter”, open the Connection Options Dialog by selecting OptionsConnection Options from the
menu. Verify that the USB Debug Adapter is selected and that the debug interface is set to JTAG.
shortcut key F5.
Rev. 0.6
Ethernet-DK
in the toolbar.
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