GPS SiRFstarIV Evaluation Kit EVA2100-A A Description of the Evaluation Board for Maestro’s SiRFstarIV GPS Receiver Module A2100-A User’s Manual Version 0.
PRELIMINARY Revision History Rev. 0.1 0.2 0.3 0.4 0.5 V0.
PRELIMINARY Disclaimer THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF MAESTRO WIRELESS SOLUTIONS LIMITED. IT MAY NOT BE COPIED OR TRANSMITTED BY ANY MEANS, PASSED TO OTHERS, OR STORED IN ANY RETRIEVAL SYSTEM OR MEDIA, WITHOUT PRIOR CONSENT OF MAESTRO OR ITS AUTHORIZED AGENTS. THE INFORMATION IN THIS DOCUMENT IS, TO THE BEST OF OUR KNOWLEDGE, ENTIRELY CORRECT.
PRELIMINARY Table of Contents 1 Introduction ........................................................................................................ 5 1.1 Purpose............................................................................................................. 5 1.2 Contents............................................................................................................ 5 1.3 General Information .........................................................................................
PRELIMINARY 1 Introduction 1.1 Purpose The GPS Evaluation Kit EVA2100-A allows an easy evaluation of Maestro’s SiRFstarIV GPS receiver module A2100-A and A2100-B by offering quick access to the serial ports and the most important I/O lines of the module.
PRELIMINARY Figure 1: Evaluation board EVA2100-A Figure 2: Active and passive GPS antenna with SMA connectors Figure 3: USB cable with A/B type connectors Figure 4: CD V0.
PRELIMINARY 1.3 General Information 1.3.1 Evaluation Board EVA2100-A Please note, that there is no separate EVA2100-B for the 1.8V module version A2100-B available. The two module types are identical except for the voltage thus the performance of the A2100-B can be evaluated with the EVA2100-A, too. 1.3.2 Ordering The complete order number for the EVA2100-A is EVA2100-A The board will always be shipped with latest firmware. Information on sales channels can be found on Maestro’s web page. 1.3.
PRELIMINARY 2 Quick Start (1) Connect the EVA2100-A with your PC using the included USB cable. (2) When the PC asks for drivers select the folder “Tools\Drivers” on the included CD ROM. Note: Two drivers need to be installed, the EVA2100-A FTDI driver and the USB serial driver.
PRELIMINARY (6) Activate the correct port within GPS Cockpit. You can do this by selecting the “COM port connection” icon (left-most icon) or by choosing “Port Number” in the “Settings” menu.
PRELIMINARY (7) Open the NMEA Terminal window to see NMEA sentences by using the “NMEA Terminal” window button. You will see no messages! (8) In order to start the module, you need to push the “ON” button of the evaluation board. Then only you will see messages like this: Figure 7: GPS Cockpit NMEA terminal with NMEA data Now you can start using all the other windows and features of GPS Cockpit. Please refer also to the GPS Cockpit manual and the online help within GPS Cockpit. V0.
PRELIMINARY 3 Potential Problems with Windows 3.1 Ballpoint Mouse After successful driver installation and after pushing the “ON” button of the EVA2100-A Windows might interpret the data coming over the serial interface as a serial ballpoint mouse! Your mouse pointer can start jumping around. To stop this, disable the according device using your device manager. Leave the EVA2100-A kit connected and push the nRST button once. The module will stop to transmit data.
PRELIMINARY So please make sure that the “Color quality” within the “Display Properties” is set to “Highest (32 bit)”. “Display Properties” can be invoked by a right click on your desktop and selecting “Properties”. Figure 10: “Color quality” within “Display Properties” V0.
PRELIMINARY 4 Board Overview The following picture shall give an overview on the complete evaluation board EVA2100-A. It explains the most important components and can be used as a reference for the next paragraphs. Figure 11: Board overview V0.
PRELIMINARY 5 On-Board Peripherals 5.1 ON and RESET Push-Button The EVA2100-A holds two push-buttons: • • ON (ON / OFF functionality) nRST (RESET functionality) After power on pushing the “ON” button will start the A2100-A module. This is absolutely necessary to get the module going. The “ON” button must be used as well in other cases, e.g. in order to request a position when in SiRFawareTM state or to go to hibernate mode and wake up again.
PRELIMINARY 5.
PRELIMINARY 6 Design-in Support The EVA2100-A demo board offers the possibility to implement the A2100-A GPS receiver module temporarily into your design by using the terminal block with 9 connections. To operate the EVA2100-A via this terminal block, please check “Table 3: Switch settings”. Please note: • VCC power input is not protected against reversed polarity • External supply has to be within the range of 3.3 to 3.6 VDC 6.
PRELIMINARY Switch Function S1 S2 S3 S4 S5 S6 S7 S8 BOOTSEL nRST WAKEUP TX RX ON VANT VCC Operation via USB connector (default settings) OFF ON ON ON ON ON ON ON Operation via terminal block OFF (*1) OFF OFF OFF OFF OFF OFF OFF Table 3: Switch settings *1: The BOOTSEL switch can be set to flash Firmware to the A2100-A GPS receiver. Switch the BOOTSEL switch to “ON”, press and release the nRST button. After this push the ON button. The A2100-A is now waiting to receive new firmware data via UART.
PRELIMINARY 7 NMEA Port • • • Default setting: 4800 baud, 8 data bits, no parity, 1 stop bit, no flow control! Standard NMEA-0183 output on NMEA, baud rate selectable. Standard USB connectors 8 EVA2100-A Firmware and NMEA Sentences See separate document GPS Firmware for a detailed description of the standard firmware loaded onto the modules delivered with the EVA2100.
PRELIMINARY 10 Board Schematics The following shows the schematics of the EVA2100. For best readability the picture was enlarged to cover the complete page. Please note that the design is done in a way that it reflects the Minimum Configuration as outlined in the GPS Receiver Manual A2100! These are especially: • The A2100-A needs an external pull-up resistor to be configured for UART operation. Although first firmware releases will work with the UART interface by default future releases will not.
PRELIMINARY Figure 18: EVA2100-A board schematics V0.
PRELIMINARY 11 Related Information 11.1 Contact This manual was created with due diligence. We hope that it will be helpful to the user to get the most out of the GPS module. Inputs regarding errors or mistaken verbalizations and comments or proposals to Maestro, Hongkong, for further improvements are highly appreciated. Maestro Wireless Solutions Limited Add:Unit 3603-09,36/F., 118 connuaught Road West,HK Main Line: (852) 28690688 Fax: (852)25254701 support-gps@maestro-wireless.com www.maestro-wireless.
PRELIMINARY 12 List of Figures Figure 1: Evaluation board EVA2100-A ................................................................... 6 Figure 2: Active and passive GPS antenna with SMA connectors ........................... 6 Figure 3: USB cable with A/B type connectors......................................................... 6 Figure 4: CD............................................................................................................. 6 Figure 5: Windows driver installation warning ........
