SpacePort Evaluation Kit SpacePort Evaluation Kit can be used to evaluate the Radiometrix SpacePort, Radio Packet Controller modules. LED indicators are provided to show system status and to facilitate range testing and installation site surveys. Internal EEPROM values can be configured through parallel port connection to PC using RPC Development Kit Software. Features • A pair of Evaluation PCBs to evaluate SP2, RPC and FRPC modules • Direct interface to Parallel port • Visual indications of operational mode and test results through LEDs • Access to internal diagnostic/Test modes and EEPROM using RPC Development Kit Software • All I/O are brought out with adjacent headers for developing applications and analyzing signals • PP3 9V Battery operation makes the board portable for easy wireless evaluation Kit contents • 2 SP2-433-160 modules (RPC or FRPC should be ordered separately) • 2 1/4 wavelength whip antennas (433MHz) Optional requirement • DB25M-DB25F parallel extension/straight through cable • PC/laptop with ECP parallel port with MS-DOS, Win3.X, Win95/98. • RPC Development Kit Software The following status LEDs will be activated depending on which mode is selected: Radiometrix Ltd SpacePort Evaluation Kit Manual page 1

1. Standalone Operation This mode selects the internal diagnostics modes built into the RPC, FRPC or SP2. Set-up • Connect the 1/4 wavelength antenna into the antenna terminal on the evaluation board. Plug the SP2 into the DIL socket marked SpacePort. RPC/FRPC should be plugged in with RPC/FRPC IC facing the Evaluation Kit and shielding can or module facing the other way. • Connect a 7.5VDC-24VDC supply or 9V battery to the supply input terminals and slide the power switch to ON position. • Put the DEBUG jumper on and press 'Reset' • The Hex switch selects the required debug mode 0 to 8. A reset...

Mode 4 - Transmit Random Code Transmitter is turned on and the carrier is modulated by a 8 bit maximal length (255) pseudo-random code at 6.25µs per bit (at 160kbps). On the receiving end, the data output AF line can be connected to an Oscilloscope to obtain an eye diagram. An eye diagram is an oscilloscope display in which a pseudo-random data signal from AF output of a receiver is repetitively sampled and applied to the vertical input, while the data rate (RXR) on the transmitting unit is used to trigger the horizontal sweep. System performance information can be derived by analyzing the display....

Voltage regulator Radiometrix Ltd SpacePort Evaluation Kit Manual page 4

If RESET jumper is inserted, the internal Packet Controller IC will be RESET leaving direct access to raw RF Transceiver. Jumper across RX-GND will enable receiver circuit and jumper across TX-GND will enable transmitter circuit. 3. PC or Laptop Operation Set-up • Connect the antenna into the antenna terminal on the development board and also plug the SP2 into the socket. • Connect a DC supply/9V battery to the supply input terminals and switch on. • Connect the development board to the LPT port of a PC or Laptop with DB25M-DB25F parallel extension/straight through cable • Remove debug jumper. •...

hiding or showing the user memory area. In order to view the help list properly the display needs to be in the expanded mode. Messages sent from the SP2 are displayed under the Outgoing (TX) message heading to the left of the display. Messages received by the SP2 are displayed under the Incoming (RX) heading to the right of the display. Command set: The following list has been taken from the RPC demonstration program and details the commands which are available for evaluating the SP2. COMMAND Reset [n] reaD address Send [$] string Write address data Clear switcH or <TAB> File [delay] file [file...] Test stoP...

eXit or <F3> Clear stoP or <AX> Help <TAB> <ESC> Typing either EXIT or X, or pressing F3 will exit from the demonstration program back to the command prompt. Clear the display output window. Stop the repeating file send (Test & File commands). Display this help information as shown in section SP2DEMO commands. Switches the display between the memory display and the expanded output display. Clear the current command line File [delay] file [file...] Send a file to the SP2. A maximum of 3 files can be given on the command line. The file names should contain only alpha characters (e.g. fred1.txt...

Appendix A Using a printer port to drive the SP2. For New PCs: Bi-directional Port (PS/2) Port requirement 8 bit bi-directional PS/2 (PS/2 or ECP set to PS/2 Mode / Byte Mode) In PS/2 Mode, Status Lines are used for Control line input from SP2 (RXR, TXA) and Printer Port Control Lines are used to output the SP2 Control signals (RXA & TXR). In Bidirectional PS/2 mode, Printer port data lines can be used as SP2 data lines in bidirectional mode. Most of the PCs come with Extended Capabilities Port (ECP). ECP can be set to operate in PS/2 compatible bidirectional mode. Program supplied with bidirectional...

SP2 Evaluation Kit can be interfaced to a Host PIC microcontroller as shown above. PIC16F870 has PortB with 8 I/O pins which can be assigned to communicate with SP2 Eval Kit. UART in PortC can be interfaced to a Serial COM Port via an RS232 driver. The following subroutines may by used by a PIC16F870 host microcontroller to upload serial data it received from its serial port to SP2 and download the data packet from SP2 and send it out via its serial port to a PC. OUT_BYTE & IN_BYTE Additionally LISTEN_BUS is called on completion of a packet transfer to the SP2 to return the data bus to high impedance...

ONRESET GOTO START ; jump to main program ; Initialise PORT B to drive SP2. select Bank 1 TXR & RXA O/P, Rest as inputs select bank 0 SUBROUTINE - IN_BYTE IN_BYTE - READ A BYTE FROM THE SP2 INTO FILE (REGISTER) POINTED TO BY FSR W IS DESTROYED NOTE - THIS ROUTINE WILL HANG THE HOST UNTIL THE HOST COMPLETES THE TRANSFER OF TWO NIBBLES - THIS SUBROUTINE CAN BE CONFIGURED TO RUN AS PART OF AN INTERUPT HANDLER IF THE RXR LINE FROM THE SP2 IS USED TO TRIGGER A HOST INTERUPT IN_BYTE BTFSC SP2,RXR ; WE GOT A RX REQUEST YET ? GOTO IN_BYTE ; NO , SO LOOP BACK AND WAIT READ THE LS NIBBLE...