Introduction
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 port, a serial port, and 8 I/O lines, has been carefully tailored to address the basic needs of lightweight network-enabled control devices. If your application has a need to store data, an external flash IC can be connected to the EM500. The EM500 also supports Wi-Fi communications (using the GA1000 add-on board).
Compact dimensions, a 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 is fully supported by TIDE software and a dedicated EM500 platform that covers all hardware facilities of the module (see "TIDE and Tibbo BASIC Manual"). For convenient testing and evaluation Tibbo offers the EM500EV development system.
The EM500 can be ordered standalone or in combination with an industry-standard RJ45 jack and/or other discrete components required to complete a working circuit.
Hardware features
| • | Based on a second-generation Tibbo ASIC (T2000). |
| • | 10/100BaseT auto-MDIX Ethernet port (no magnetics). |
| • | One serial port (CMOS-level): |
- Baudrates of up to 460'800bps;
- 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; 256KB available for compiled Tibbo BASIC application; an external flash IC can be connected if data storage is required. |
| • | 208 bytes of EEPROM space for data storage. |
| • | 8 general-purpose I/O lines (including 2 interrupt lines) and excluding TX and RX lines of the serial port. |
| • | Control lines for two external dual-function status LEDs. |
| • | Additional control line for a dedicated Ethernet link LED. |
| • | RST input for an external reset source (which is required). |
| • | Power: 260mA @ 3.3V. |
| • | "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). |
Programming features
| • | Variable Types: Byte, char, integer (word), short, dword, long, real, string, plus ser-defined arrays and structures. |
| • | Function Groups: Strings functions (21 in total!), date/time conversion functions, and hash calculation functions (md5 and sha1). |
| • | Platform objects: |
- Sock — socket communications (up to 16 UDP, TCP, and HTTP sessions);
- Net — controls Ethernet port;
- Wln — handles Wi-Fi interface (requires GA1000 add-on module);
- Ser — in charge of serial ports (UART, Wiegand, and clock/data modes);
- Io — handles I/O lines, ports, and interrupts;
- Fd* — manages flash memory file system and direct sector access;
- Stor — provides access to the EEPROM;
- Romfile — facilitates access to resource files (fixed data);
- Pppoe — provides access to the Internet over an ADSL modem;
- Ppp — provides access to the Internet over a serial modem (GPRS, POTS, etc.);
- Pat — "plays" patterns on up to five LED pairs;
- Button — monitors MD line (setup button);
- Sys — in charge of general device functionality;
* Fully supported with the exception of fd.copyfirmware; requires an externally connected flash IC.