lc29d evb user guide - tekmodul gmbh

LC29D EVB User Guide

GNSS Module Series

Rev. LC29D_EVB_User_Guide_V1.0

Date: 2020-07-02

Status: Released

www.quectel.com

GNSS Module Series LC29D EVB User Guide

LC29D_EVB_User_Guide 1 / 22

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About the Document

History

Revision Date Author Description

1.0 2020-07-02 Brooke WANG Initial



Contents

About the Document .................................................................................................................................. 1

Contents ...................................................................................................................................................... 2

Table Index .................................................................................................................................................. 3

Figure Index ................................................................................................................................................ 4

1 Introduction ......................................................................................................................................... 5

1.1. Safety Information ...................................................................................................................... 5

2 General Overview ................................................................................................................................ 6

2.1. Top View of the EVB .................................................................................................................. 6

3 Connector Applications ..................................................................................................................... 8

3.1. Tape-B USB Connector .............................................................................................................. 8

3.2. Antenna Connector .................................................................................................................... 9

3.3. SD Card Connector .................................................................................................................... 9

3.4. (U)SIM Card Connector ........................................................................................................... 10

3.5. Switches and Buttons .............................................................................................................. 10

3.6. Odo Connector ......................................................................................................................... 12

3.7. Operation Status Indication LEDs ............................................................................................ 13

3.8. Test Points ................................................................................................................................ 14

4 Firmware Download .......................................................................................................................... 15

4.1. Firmware Download in Normal Working Mode ........................................................................ 15

4.2. Firmware Download in Host Mode ........................................................................................... 15

5 Instructions for the use of RTK ....................................................................................................... 17

5.1. RTK account configuration ....................................................................................................... 17

5.2. Steps to use RTK ..................................................................................................................... 18

6 Module Calibration ............................................................................................................................ 19

6.1. EVB placement ........................................................................................................................ 19

6.2. Calibration procedure ............................................................................................................... 20

7 Appendix A References .................................................................................................................... 21



Table Index

TABLE 1: INTERFACES OF LC29D EVB ........................................................................................................... 6

TABLE 2: SWITCHES AND BUTTONS .............................................................................................................. 11

TABLE 3: PIN DESCRIPTION OF J104 ............................................................................................................ 12

TABLE 4: OPERATION STATUS INDICATION LEDS ....................................................................................... 13

TABLE 5: PIN DESCRIPTION OF J302 ............................................................................................................ 14

TABLE 6: ARGUMENTS .................................................................................................................................... 17

TABLE 7: RELATED DOCUMENTS .................................................................................................................. 21

TABLE 8: TERMS AND ABBREVIATIONS ........................................................................................................ 21



Figure Index

FIGURE 1: TOP VIEW OF LC29D EVB .............................................................................................................. 6

FIGURE 2: TYPE-B USB CONNECTOR ............................................................................................................ 8

FIGURE 3: ANTENNA CONNECTOR ................................................................................................................. 9

FIGURE 4: SD CARD CONNECTOR .................................................................................................................. 9

FIGURE 5: (U)SIM CONNECTOR .................................................................................................................... 10

FIGURE 6: SWITCHES AND BUTTONS ........................................................................................................... 11

FIGURE 7: J104 TEST POINTS ........................................................................................................................ 12

FIGURE 8: OPERATION STATUS INDICATION LEDS .................................................................................... 13

FIGURE 9: J302 TEST POINTS ........................................................................................................................ 14

FIGURE 10: QGNSS CONFIGURATIONS ........................................................................................................ 15

FIGURE 11: QGNSS CONFIGURATIONS ........................................................................................................ 16

FIGURE 12: EVB PLACEMENT DIRECTION ................................................................................................... 19



1 Introduction

This document specifies the usage of LC29D EVB which is an assistant tool for engineers to develop and

test Quectel LC29D module.

1.1. Safety Information

The following safety precautions must be observed during all phases of operation, such as usage, service

or repair of any terminal incorporating Quectel LC29D module. Manufacturers of the terminal should notify

users and operating personnel of the following safety information by incorporating these guidelines into all

manuals supplied with the product. If not so, Quectel assumes no liability for customers’ failure to comply

with these precautions.

Ensure that the use of the product meets the national safety and environmental

regulations, and is allowed in the country and in the environment required.

Keep away from explosive and flammable materials. The use of electronic products

in extreme power supply conditions and locations with potentially explosive

atmospheres may cause fire and explosion hazards.

The product has to be powered by a stabilized voltage source, and the wiring shall

conform to security and fire prevention regulations.

Proper ESD handling procedures must be applied throughout the mounting,

handling and operation of any application that incorporates the module to avoid

ESD damages.



2 General Overview

2.1. Top View of the EVB

The following figure illustrates the top view of LC29D EVB.

A

BCDEFGH

J K

I

L M N O P Q

R

Figure 1: Top View of LC29D EVB

Table 1: Interfaces of LC29D EVB

SN. Part No. Description



A U301 LC29D module

B J301 LC29D module antenna connector

C S301 LC29D BOOT button

D J501 ODO connector

E J404 USIM card connector

F J202 SD card connector

G S401 EG25 RESET button

H J403 EG25 module antenna connector

I U401 EG25 module

J J101 Power supply and EG25 USB interface

K D403 EG25 status and network indication LED

L D104 Power indication LED

M S101 Power switch (ON←→OFF)

N J201

Power supply

Enhanced COM Port : LC29D module

Standard COM Port : EG25 module

O S203 DL: LC29D module

RTK: EG25 module

P S201 Standby mode control

Q D301 1PPS and TXD1 Indication LED

R J302 Test points



3 Connector Applications

3.1. Tape-B USB Connector

Both Type-B USB connectors can supply power for the EVB. The power supply current of EVB cannot be

lower than 2A.

EG25 USB AT Port is mainly used for the account configuration of RTK.

Enhanced COM Port is mainly used to configure LC29D module and firmware upgrade.

Standard COM Port is mainly used for LC29D module NMEA output.

EG25 USB Connector USB TO UART Connector

Figure 2: Type-B USB Connector

Before using the EVB, please install the USB driver.

NOTE



3.2. Antenna Connector

LC29D antenna connector connect a passive or active GNSS antenna.

EG25 antenna connector connect a 4G antenna.

LC29D Antenna

Connector

EG25 Antenna

Connector

Figure 3: Antenna Connector

3.3. SD Card Connector

The data received by the SD card and Standard COM Port are the same.

SD Card

Connector

Figure 4: SD card Connector



3.4. (U)SIM Card Connector

If the (U)SIM card is not inserted and the LC29D RTK account is not configured, the SD card and Standard

COM Port cannot receive data.

(U)SIM Card

Connector

Figure 5: (U)SIM Connector

3.5. Switches and Buttons

The following figure illustrates the switches and buttons of the EVB.



S401

S101

S301

S203 S201

Figure 6: Switches and Buttons

Table 2: Switches and Buttons

Part No. Name Description

S101 POWER EVB power switch. (ON←→OFF)

S203 DL/RTK

DL: LC29D UART1 is connected to Enhanced COM Port and will be

used when configure LC29D module and firmware upgrade.

RTK: LC29D UART1 is connected to EG25 and will be used when

LC29D module gets RTCM data.

S201 NSTANDBY

Long press (press and hold) the NSTANDBY button to enter standby

mode, and release the button to exit from standby mode.

Short press (press and then release) the NSTANDBY button to reset the

module.

S301 BOOT Press and hold the BOOT button during EVB power-on to make the

module enter host mode.

S401 EG25_RESET Reset EG25 module.



3.6. Odo Connector

1 2 3 4

5 6 7 8

Figure 7: J104 test points

Table 3: Pin Description of J104

SN. Signal I/O Description

1~5 NC / /

6 WHEELTICK DI Odometer wheel-tick input

7 FWD DI Forward/Backward signal input

8 GND / Ground



3.7. Operation Status Indication LEDs

L1

L4L2

L3

L5

L6

L6

Figure 8: Operation Status Indication LEDs

Table 4: Operation Status Indication LEDs

SN. Name Description

L1 STATUS Indicate the module operating status.

L2 NETLIGHT

Flicker slowly (200 ms High/1800 ms Low): Network searching.

Flicker slowly (1800 ms High/200 ms Low): Idle.

Flicker quickly (125 ms High/125 ms Low): Data transfer is ongoing.

Always high: Voice calling.

L3 POWER EVB power indicator.

L4 LC29D_PWR LC29D module power indicator.

L5 1PPS Flash: successful fix.

Extinct: no fix.

L6 TXD Flash: the module is turned on successfully and can output NMEA

messages.



3.8. Test Points

The following figure illustrates the test points of the EVB.

1

2

3

4

5

6

7

8

9

10

Figure 9: J302 test points

Table 5: Pin Description of J302

SN. Signal I/O Description

1 RXD1 DI Receive data

2 VCC_3.3V PO 3.3V power output

3 TXD1 DO Transmit data

4 GND - Ground

5 RTS1 DO Request to send

6 1PPS DO One pulse per second

7 CTS1 DI Clear to send

8 I2C_SCL OD I2C clock

9 VDD_EXT PO 1.8V power output

10 I2C_SDA OD I2C data



4 Firmware Download

This chapter mainly introduces how to download firmware while operating the EVB. For more details of the

usage of QGNSS tool, please refer to document [5].

LC29D module supports firmware download in both normal working mode and host mode.

4.1. Firmware Download in Normal Working Mode

Step 1: Connect J201 to the computer with a Type-B USB cable.

Step 2: Switch S203 to DL and power on the EVB.

Step 3: Run the QGNSS and then configure the tool as shown below.

Enhanced COM Port

a

b

d

c

e

UPG.bin

Figure 10: QGNSS Configurations

⚫

Please make sure the module is in full on mode before downloading firmware in normal working mode.

4.2. Firmware Download in Host Mode

NOTE



Step 1: Connect J201 to the computer with a Type-B USB cable.

Step 2: Switch S203 to DL.

Step 3: Press and hold the LC29D_BOOT button (S301) during EVB power-on to make the module enter

host mode. After the module enters host mode successfully, release the button.

Step 4: Run the QGNSS and then configure the tool as shown below.

Enhanced COM Port

a

b

d

c

e

BOOT.bin

Figure 11: QGNSS Configurations



5 Instructions for the use of RTK

This chapter mainly introduces the account configuration of LC29D RTK.

5.1. RTK account configuration

RTK account configuration via USB AT Port of EG25 module. The baud rate of USB AT port is 115200bps.

The RTK account only needs to be configured for the first time unless the account expires or EG25 module

upgrade firmware.

Synopsis:

AT+QGNSSPARAM= 0,0," ip",port,"quectel_usr","quectel_pwd","mount_point",1,1

Table 6: Arguments

1）In case of no errors, the returned message will be:

+QGNSSPARAM OK

2）In case of any error, the returned message will be:

Parameter Description

ProtoMode 0( ntirp protocol); 1( tcp protocol)

DataMode The Tcp protocol is valid, 0( Rover Station); 1(Base station)

IP Server IP address

Port Server port

Usr Ntrip protocol valid, user name

Pwd Ntrip protocol is valid, password

Source Ntrip protocol is valid, mount point

AssistUart 0: close

1: open, Standard COM Port can receive LC29D module NMEA data.

DataStore 0: close

1: open, SD card can receive LC29D module NMEA data.



+QGNSSPARAM ERR

5.2. Steps to use RTK

The detailed steps are as follows.

Step 1: Insert (U)SIM card and connect 4G, GNSS antenna.

Step 2: Connect the EG25 USB connector to the computer and power on the EVB.

Step 3: Configure your RTK account.

Step 4: Restart the EVB after the RTK account is configured successfully.

Step 5: Connect Standard COM Port after restart, baud rate is 460800bps.

Step 6: Need to be in an open-sky environment to get into the RTK.

Step 7: When $PQTMINS the second parameter of becomes 3 or 4, enter RTK successfully.

Example:

$PQTMINS,680013,4,31.821291735,117.116094469,63.424977,-1.261245,0.036807,-

0.303004,166.014936,3.050992,120.071409*40



6 Module Calibration

In order to utilize Dead Reckoning (DR) capabilities of LC29D, a valid module calibration is essential.

This chapter introduces the calibration of LC29D module.

6.1. EVB placement

The EVB should be placed as illustrated in the following figure and no movement should happen, otherwise

the calibration may fail. The white arrow is the forward direction of the vehicle and the EVB should be

placed horizontally.

Forward Direction

Figure 12: EVB Placement Direction



6.2. Calibration procedure

The calibration procedure is as follows:

Step 1: Install the EVB on a vehicle.

Step 2: Switch S203 to DL and power on the EVB.

Step 3: Send the following commands to LC29D module through Enhanced COM Port.

1. Clear calibration data: $PQTMRESETINSCFG*5B

2. Configure DR calibration mode: $PQTMSETINSPROFILE,2,1,1*5B

Step 4: Switch S203 to RTK and start the vehicle.

Step 5: Keep the vehicle unmoved for at least 30 seconds on a flat road (1°~2° tolerance in gravity

direction).

Step 6: Speed at least 5m/s, open ground 1 minute.

Step 7: When $PQTMINS the second parameter of becomes 2 or 4, the calibration is successful.

Example:

$PQTMINS,680013,4,31.821291735,117.116094469,63.424977,-1.261245,0.036807,-

0.303004,166.014936,3.050992,120.071409*40



7 Appendix A References

Table 7: Related Documents

Table 8: Terms and Abbreviations

SN Document name Remark

[1] Quectel_LC29D_Hardware_Design LC29D Hardware Design

[2] Quectel_LC29D_GNSS_Protocol_Specification LC29D GNSS Protocol Specification

[3] Quectel_LC29D_Reference Design LC29D Reference Design

[4] Quectel_QCOM_User_Guide QCOM User Guide

[5] Quectel_QGNSS_User_Guide QGNSS User Guide

Abbreviation Description

CNR Carrier-to-Noise Ratio

DI Digital Input

DO Digital Output

EVB Evaluation Board

GNSS Global Navigation Satellite System

GPS Global Positioning System

LED Light Emitting Diode

LNA Low Noise Amplifier

OD Open Drain

PI Power Input



PO Power Output

PPS Pulse Per Second

PRN Pseudorandom Noise

SV Satellite Vehicle

TTFF Time To First Fix

UTC Universal Time Coordinated