Quectel L20 User manual

L20
[email protected]
Quectel GPS Engine
EVB User Guide
L20_EVB_User_Guide_V1.0
L20 EVB User Guide
Document Title
L20 EVB User Guide
Version
1.0
Date
2010-12-20
Status
Release
Document Control ID
L20_EVB_User_Guide_V1.0
General Notes
Quectel offers this information as a service to its customers, to support application and
engineering efforts that use the products designed by Quectel.
Quectel. The information provided is
based upon requirements specifically provided to Quectel by the customers. Quectel has not
undertaken any independent
pendent search for additional relevant information, including any
information that may be in the customer’s possession. Furthermore, system validation of this
product designed by Quectel within a larger electronic system remains the responsibility of
the customer
ustomer or the customer’s system integrator. All specifications supplied herein are
subject to change.
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Copyright
This document contains proprietary technical information which is the property of Quectel
Limited. The copying of this document, distribution to others, and communication of the
contents thereof, are forbidden without express authority. Offenders are liable to the payment
of damages. All rights are reserved in the event of a patent grant or registration of a utility
model or design. All specification
specification supplied herein are subject to change without notice at any
time.
Copyright © Shanghai Quectel Wireless Solutions Co., Ltd. 2010
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L20 EVB User Guide
Contents
0. Revision History ........................................................................................................................... 5
1. Introduction ................................................................................................................................... 6
1.1. Reference............................................................................................................................. 6
1.2. Abbreviations ...................................................................................................................... 6
2. EVB Kit Introduction .................................................................................................................... 7
2.1. EVB Top and Bottom View ................................................................................................. 7
2.2. EVB Accessories ................................................................................................................. 9
3. Interface Application ................................................................................................................... 10
3.1. Power Interface ................................................................................................................. 10
3.2. UART Interface .................................................................................................................
11
................................
3.3. Antenna Interface ..............................................................................................................
12
................................................................
................................................................
3.4. Switches ............................................................................................................................
12
................................................................
................................................................
3.5. Operating Status LEDs ................................................................
......................................................................................................
................................
................................................................
......................................13
...... 13
3.6. Test Points .........................................................................................................................
.........................................................................................14
................................................................
......................... 14
4. EVB and Accessories ................................................................
..................................................................................................................
................................
................................................................
..................................................15
..................................................
15
5. Starting SiRFLive ................................................................
.......................................................................................................................
................................
................................................................
.......................................................16
.......................................................
16
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L20 EVB User Guide
Table Index
TABLE 1: REFERENCE .......................................................................................................................... 6
TABLE 2: ABBREVIATIONS ................................................................................................................. 6
TABLE 3: PINS OF UART PORT ......................................................................................................... 11
TABLE 4: SWITCHES AND BUTTONS .............................................................................................. 13
TABLE 5: OPERATING STATUS LEDS .............................................................................................. 13
TABLE 6: PINS OF J102 & J104........................................................................................................... 14
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L20 EVB User Guide
Figure Index
FIGURE 1: EVB TOP VIEW ................................................................................................................... 7
FIGURE 2: EVB BOTTOM VIEW ......................................................................................................... 8
FIGURE 3: EVB ACCESSORIES ........................................................................................................... 9
FIGURE 4: POWER INTERFACE ........................................................................................................ 10
FIGURE 5: UART INTERFACE ........................................................................................................... 11
FIGURE 6: ANTENNA INTERFACE ................................................................................................... 12
FIGURE 7: SWITCHES......................................................................................................................... 12
FIGURE 8: OPERATING STATUS LEDS ............................................................................................ 13
FIGURE 9: TEST POINTS J102 & J104 ............................................................................................... 14
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FIGURE 10: EVB AND ACCESSORY EQUIPMENTS ................................................................
................................
.......................................................................
................................
15
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L20 EVB User Guide
0. Revision History
Revision
Date
Author
Description of change
1.0
2010-12-20
Roy Chen
Initial
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L20 EVB User Guide
1. Introduction
This document defines and specifies the usage of L20 EVB (Evaluation Board). Customer can get
useful information about L20 EVB and GPS demo tool from this document.
1.1. Reference
Table 1: Reference
SN
[1]
Document name
Remark
L20_HD
Hardware Design
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1.2. Abbreviations
Table 2: Abbreviations
Abbreviation
Description
C/NO
Carrier/
Carrier/No
Carrier/Noise
Noise
GPS
HDOP
SV
UART
USB
UTC
Global
Gl
Glo
obal
bal Positioni
Positioning
Position
ing
ng System
Horizontal Dilution of Precision
Satellite Vehicle
Universal Asynchronous Receiver & Transmitter
Universal Serial Bus
Universal Time Coordinated
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L20 EVB User Guide
2. EVB Kit Introduction
2.1. EVB Top and Bottom View
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Figure 1: EVB top
top view
view
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L20 EVB User Guide
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Figure 2: EVB
EVB bottom
bottom view
view
A: GPS UART port
B: Antenna interface
C: Adapter interface
D: Test points
points
E: L20 Module
F: POWER switch
G: NC switch (Reserve for future development)
H: NC botton (Reserve for future development)
I: Indication
ion LEDs
J: MCU UART port (no use)
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L20 EVB User Guide
2.2. EVB Accessories
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Figure 3:: EVB accessories
accessories
accessor
ies
A: GPS active antenna (3.3V)
B: Serial port cable (USB 2.0)
C: DC5V/2A
/2A power adapter
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L20 EVB User Guide
3. Interface Application
3.1. Power Interface
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Figure 4: Power interface
interface
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L20 EVB User Guide
3.2. UART Interface
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Figure 5: UART interface
nterface
3: Pins of UART port
Table 3:
Pin
Signal
I/O
2
TXD(RS232)
(RS232)
O
Transmit data
RXD(RS232)
RXD(RS232)
I
Receive data
3
5
GND
L20_EVB_User_Guide_V1.0
Description
GND
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L20 EVB User Guide
3.3. Antenna Interface
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Figure 6:: Antenna interface
interface
3.4. Switches
Switches
Figure 7: Switches
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L20 EVB User Guide
Table 4: Switches and buttons
Part
Name
I/O
S1
POWER
I
Description
Control power supply from adapter
3.5. Operating Status LEDs
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Figure 8:
8: Operating status LEDs
Table 5:
5: Operating
Operating status
status LEDs
LED
Part
art
Name
I/O
L1
GPS_TXD_DATA
O
Flash: GPS Data export from TXD
Extinct: no data
1PPS
O
TBD
L2
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Description
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L20 EVB User Guide
3.6. Test Points
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Figure 9:
9: Test points
oints J102
J102 & J104
Table 6:: Pins of J102 & J104
Pin
Signal
Signal
I/O
7
TXD1
O
Transmit GPS data
RXD1
I
Receive GPS data
VCC
I
Supply voltage to module
8
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Description
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L20 EVB User Guide
4. EVB and Accessories
The EVB and its accessories are equipped as shown in Figure 10.
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Figure 10:
10: EVB and accessory equipments
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L20 EVB User Guide
5. Starting SiRFLive
The SiRFLive tool can help user to view the status of GPS receiver and record NMEA data. The
steps of using SiRFLive for L20 are described as below:
1. After finishing assembling the EVB as figure 10, connect the RS232 to USB cable to PC, and
power on the module, the LED GPS_TXD_DATA will be flash. The operation window of
SiRFLive is shown below:
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2. Click the button
L20_EVB_User_Guide_V1.0
to select COM port and baud rate 4800 in pop-up window:
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L20 EVB User Guide
3. The operation window will show NMEA data, Signal view, Radar view, Location map and
Position information including UTC, latitude, longitude, altitude, HDOP, speed and so on.
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4. Click button
, the reset window will pop up as below:
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L20 EVB User Guide
5. Select reset mode and click “Send” to implement Cold Start, Warm Start or Hot Start.
Save NMEA data with below toolbar:
6. Record log and Stop log with below menu:
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L20_EVB_User_Guide_V1.0
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Shanghai Quectel Wireless Solutions Co., Ltd.
Room 501, Building 9, No.99, Tianzhou Road, Shanghai, China 200233
Tel: +86 21 5108 2965
Mail: [email protected]
[email protected]