MDEV-GPS-SR

WIRELESS MADE SIMPLE ® SR Series Master Development System User’s Guide ORDERING INFORMATION PART # MDEV-GPS-SR DESCRIPTION SR Series Master Development System INTRODUCTION The Linx SR Series RF modules offer a simple, efficient, and cost-effective method of adding GPS capabilities to any product. The Master Development System is intended to give a designer all the tools necessary to correctly incorporate the SR Series into an end product. The development boards themselves serve several important functions: • Rapid Module Evaluation - The boards allow the performance of the Linx SR Series modules to be evaluated quickly in a user’s environment. • Design Benchmark - During the design process of your product, the boards provide a known benchmark against which the performance of your own design may be judged. • Application Development - An on-board prototyping area is provided to allow a designer to develop applications directly on the development board. All signal lines are available on a header for easy connection to the designer’s circuits. The Master Development System includes 1 assembled development board, 2 SR Series receivers*, 4 AAA batteries, and full documentation. *One part is soldered to the board, one extra is for use on your first prototype board. Revised 07/26/11 SR SERIES RECEIVER DEVELOPMENT BOARD 9 5 1 7 8 6 10 2 4 3 11 Figure 1: SR Series Receiver Development Board 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Four AAA Batteries DC Power Jack Power Switch Voltage Regulator USB Interface Module Prototype Area Break-Out Header SR Series Receiver Daughter Board CR2032 Backup Battery (on the back) OLED Display OLED Display Power Switch TROUBLESHOOTING If the board fails to work out of the box, then try the following: • Check the batteries to make sure they are not dead. • Check to make sure that the power switch is in the correct position. • Make sure that the jumper is set correctly. If all of these appear to be in order, please call 800-736-6677 or e-mail techsupport@linxtechnologies.com for technical support. Page 2 INITIAL SETUP Unpack the development system and install the AAA and coin-cell batteries. The power switch can select between the battery pack / DC power jack or USB if the board is plugged into a USB bus. To use the display, turn the OLED display power switch on. The development board is now ready for use. After turning on the power, the module will determine its current position. Please note, the time required for an initial fix or after long periods of storage will be considerably greater than in subsequent operation. Please refer to the module’s data guide for complete information regarding time-to-first-fix (TTFF). To protect the display and extend its life, turn the display off before turning the board off. THE PROTOTYPING AREA In addition to its evaluation functions, the board may also be used for actual product development. It features a prototyping area to facilitate the addition of application-specific circuitry. The prototyping area contains a large area of plated through-holes so that external circuitry can be placed on the board. The holes are set at 0.100” on center with a 0.040” diameter, making it easy to add most industry-standard SIP and DIP packages to the board. External circuitry can be easily interfaced with the SR receiver through the breakout header (J7) to the right of the prototyping area. A jumper shunt has been provided to control the routing of data into the GPS module. By default the jumper is set for operation with the on-board USB module. When communicating with the GPS module using your own components this jumper shunt should be removed. At the bottom of the prototyping area is a row connected to the 3V power supply and at the top is a row connected to ground. NOTE: The on-board 3-volt regulator has approximately 300mA of headroom available for additional circuitry. If added circuitry requires a higher current, the user must add an additional regulator to the prototype area or power the board from an external supply. Ground Bus +3 Volt Bus Figure 2: The Development Board Prototyping Area Page 3 THE GPS RECEIVER SECTION The receiver module is mounted on a daughter board which plugs into headers on the main development board. Figure 3: The Development Board GPS Receiver Section On the bottom of the main board is a CR2032 coin cell battery that provides power to the RTC and SRAM when the receiver is powered down. This allows the receiver to start up and obtain a position fix faster. This cell will provide about two years of operation. THE USB SECTION The development board features a Linx QS Series USB module for interface to a PC. This allows the board to be used with the supplied development software or with custom software developed by the user. Drivers for the USB module are included on the software CD in the kit or may be downloaded from www.linxtechnologies.com. Additional information on using the QS Series USB module can also be found on the website. The USB connection also allows the board to be powered by the USB bus instead of batteries. This can be convenient during development to eliminate the need for frequent battery Figure 4: The USB Section replacement. Output data from the GPS module is connected directly to the USB module, but data into the GPS TX MODULE module is split. This is to prevent data collisions TX USB between the USB module and any circuitry added RX MODULE to the prototyping area. To route serial data from TX DISPLAY the USB module to the serial data receive line on the GPS module, use the supplied jumper to 1PPS connect the TX USB and RX MODULE lines on RFPWRUP the breakout header as shown in the adjoining EN/ON_OFF diagram. Remove this jumper for use with external circuitry. The pin marked TX DISPLAY is Figure 5: Jumper Configuration for Linx use and should be left unconnected. Page 4 THE DISPLAY SECTION The SR Series Master Development System features an OLED screen that displays the navigation information from the GPS module. This allows the development board to act as a stand-alone evaluation system without the need for any additional software. Figure 6: The Development Board Display Section The display is driven by an on-board microcontroller located under the display. Data from the GPS module is connected directly to this microcontroller. The microcontroller receives data at the receiver’s default 9,600bps. If the receiver’s baud rate is changed, it will not be able to communicate with the microcontroller. The display and microcontroller pull about 100mA when fully powered, so a power switch is supplied to deactivate the display area when not in use, saving battery life. To protect the display and extend its life, be sure to turn the display section off before turning off the main power to the board. MASTER DEVELOPMENT SOFTWARE The development system is supplied with Windows-based software that communicates with the development board through the USB module. This software displays the information from the GPS module in the different NMEA formats and the satellite information, signal strength, and positions are displayed graphically. If the PC is connected to the internet, the software plots the current location on Google Maps. Full details are in the software’s User’s Guide. Figure 7: Master Development Software Page 5 RECEIVER SECTION J4 J3 GND GND 1 2 3 4 5 6 7 8 9 10 TXM RXM 1PPS LED RFPWRUP EN/ON_OFF GND 1 2 3 4 5 6 7 8 9 10 VCC VBACKUP GND VBACKUP B2 BATHLD-001 GND HEADER 10 HEADER 10 HEADER SECTION J7 1 2 3 4 5 6 7 TXM TXUSB RXM TXDISP 1PPS RFPWRUP EN/ON_OFF HEADER 7 USB SECTION GSHD GND DAT+ DAT 5V 4 3 2 1 GND GND 5 6 GSHD J2 USB-B GND GND U2 1 2 3 4 5 6 7 8 USBDP RI DCD USBDM GND DSR VCC DATA IN SUSP IND DATA OUT RTS RX IND CTS TX IND 485 TX DTR 16 15 14 13 12 11 10 9 TXM TXUSB SDM-USB-QS VCCU R1 220 R2 220 D3 D2 POWER SUPPLY SECTION SW1 VCCU D1 DIODE400 B1 BAT-AA-4 GND GND Vout GND POWER SWITCH GND Page 6 U1 VREG-3V VCC VCC + 2 + C1 220uF GND 1 PWRJACK Vin 3 J1 GND C9 10uF DISPLAY SECTION 49 51 50 OC2/RD1 OC3/RD2 PMBE/OC4/RD3 E/RD# R/W# 52 53 PMRD/CN14/RD5 PMWR/OC5/IC5/CN13/RD4 54 CN15/RD6 56 55 VCAP/VDDCORE CN16/RD7 57 58 RF0 ENVREG D0 EN 59 RF1 D1 60 PMD0/RE0 D2 61 PMD1/RE1 D3 PMD2/RE2 62 63 SCL1/RG2 C2IN+/AN3/CN5/RB3 SDA1/RG3 C2IN-/AN2/SS1/CN4/RB2 U1RTS/BCLK1/SCK1/INT0/RF6 PGC1/EMUC1/VREF-/AN1/CN3/RB1 47 SW3 VCC 46 GND 45 44 43 42 41 SW2 POWER SWITCH VCC GND GND 40 39 38 37 VCC RES# 36 CS# 35 34 TXM TXDISP PMA8/U2TX/SCL2/CN18/RF5 33 32 PMA0/AN15/OCFB/CN12/RB15 31 48 D/C# 30 PMA9/U2RX/SDA2/CN17/RF4 U1TX/SDO1/RF3 PMA1/U2RTS/BCLK2/AN14/RB14 TDI/PMA10/AN13/RB13 29 PGD2/EMUD2/AN7/RB7 PGC2/EMUC2/AN6/OCFA/RB6 18 17 VCC GND TCK/PMA11/AN12/RB12 U1RX/SDI1/RF2 PGD1/EMUD1/PMA6/VREF+/AN0/CN2/RB0 28 16 C1IN-/AN4/CN6/RB4 27 15 PGC PGD VDD VDD 14 OSC1/CLKI/RC12 C1IN+/AN5/CN7/RB5 26 13 OSC2/CLKO/RC15 VDD VSS 12 VSS 25 11 VSS TDO/PMA12/AN11/RB11 10 VCC IC1/RTCC/INT1/RD8 PMA2/SS2/CN11/RG9 TMS/PMA13/CVREF/AN10/RB10 GND MCLR 24 9 IC2/U1CTS/INT2/RD9 U4 PIC24F128GA006 23 8 IC3/PMCS2/INT3/RD10 PMA3/SDO2/CN10/RG8 PMA7/C2OUT/AN9/RB9 VPP OC1/RD0 PMA4/SDI2/CN9/RG7 22 7 SOSCI/CN1/RC13 IC4/PMCS1/INT4/RD11 U2CTS/C1OUT/AN8/RB8 6 SOSC0/T1CK/CN0/RC14 PMA5/SCK2/CN8/RG6 21 5 C8 10uF PMD7/RE7 AVSS 4 PMD5/RE5 20 3 D7 VCC + PMD6/RE6 AVDD 2 19 1 D5 D6 PMD3/RE3 PMD4/RE4 64 D4 GND GND VCC J5 C5 4.7uF + GND VCC13 VCC D5 D6 R6 50 VCC13 D4 L1 10uH R3 47.5k GND C3 10uF 2 3 R4 5k GND C2 U3 1 C4 0.1uF VCC SW VIN 5 FB MIC2288 GND R5 2.2uF GND EN 4 GND VCC GND 560k EN C6 GND 1uF GND VCC GND VCC VCOMH VDDIO VSL D7 D6 D5 D4 D3 D2 D1 D0 E/RD# R/W# BS0 BS1 CS# D/C# RES# IREF GPIO1 GPIO0 VDD VCI VSS GND GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 HEADER 30 C7 0.1uF GND Page 7 WIRELESS MADE SIMPLE ® U.S. CORPORATE HEADQUARTERS LINX TECHNOLOGIES, INC. 159 ORT LANE MERLIN, OR 97532 PHONE: (541) 471-6256 FAX: (541) 471-6251 www.linxtechnologies.com Disclaimer Linx Technologies is continually striving to improve the quality and function of its products. 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