EM500 BASIC-programmable Ethernet Module

The EM500 is a miniature stand-alone BASIC-programmable embedded module, designed to be used in combination with a standard LED/magnetics RJ45 jack. The combined footprint of the EM500 and a standard jack is only 28.5x18.5mm.

The module's hardware mix, which includes 10/100BaseT Ethernet, a serial port, and 8 I/O lines, has been carefully tailored to address the basic needs of lightweight network-enabled control devices.

Compact dimensions, space-saving "vertical slice" mechanical design, low power consumption, and innovative dual-function LED control lines make the module an excellent fit for miniature, cost-sensitive designs.

The EM500 also supports Wi-Fi communications (using the GA1000 add-on board), as well as flash disk (via an SPI flash IC).

The EM500 can be ordered standalone or in combination with an industry-standard RJ45 jack and/or all discrete components required to complete the circuit.

Specifications:

• Based on a second-generation ASIC (T2000).
• 10/100BaseT auto-MDIX Ethernet port (no magnetics).
• One serial port (CMOS-level):
  • Baudrates of up to 460800bps;
  • None/even/odd/mark/space parity modes;
  • 7/8 bits/character modes;
  • Full-duplex mode with optional flow control;
  • Half-duplex mode with direction control;
  • Encoding and decoding of Wiegand and clock/data streams.
• 512KB flash memory for firmware and application.
• 200 bytes of EEPROM space for data storage.
• 8 general-purpose I/O lines (including 2 interrupt lines).
• Control lines for two external dual-function status LEDs.
• Additional control line for a dedicated Ethernet link LED.
• External reset source required.
• Power: 260mA @ 3.3V (100BaseT mode).
• "Vertical slice" construction; dimensions: 18.5x16.0x6.5mm.
• Firmware is upgradeable through the serial port or network (including "cold upgrade" firmware uploads through the network).
• Optional Wi-Fi interface (requires GA1000 add-on module).
• Optional Flash disk (requires an external SPI flash IC).

See also:
GA1000 Wi-Fi add-on module

Platform objects:

• Sock — socket comms (up to 16 UDP, TCP, and HTTP sessions).
• Net — controls Ethernet port.
• Ser — controls serial port (UART, Wiegand, and clock/data modes).
• Io — handles I/O lines, ports, and interrupts.
• Stor — provides access to the EEPROM.
• Romfile — facilitates access to resource files (fixed data).
• Pppoe — accesses the Internet over an ADSL modem.
• Ppp — accesses the Internet over a serial modem (GPRS, etc.).
• Pat — "plays" patterns on up to five LED pairs.
• Button — monitors MD line (setup button).
• Sys — in charge of general device functionality.
• Wln — handles Wi-Fi interface (requires GA1000 add-on module).
• Fd — manages flash memory file system and direct sector access (requires an external SPI flash IC).

Function Groups: String functions (27 in total!), date/time conversion functions (8), encryption/hash calculation functions (RC4, MD5, SHA-1), and more.

Variable Types: Byte, char, integer (word), short, dword, long, real, string, plus user-defined arrays and structures.

Here's a video showing how to quickly make the EM500 into a Device Server, no programming reqired:

And here's a video showing what's in the box:

Also, if you're curious about programming in Tibbo BASIC, check out our other video tutorials.