Wireless module
EC20 4G Module suite
Product parameters
Model EC20-C R2.0 Mini PCIe-C
Supply voltage 3.3V~ 3.6V, Typical values: 3.3V
Working frequency band TDD-LTE: B38/B39/B40/B41 FDD-LTE: B1/B3/B8
WCDMA: B1/B8 TD-SCDMA: B34/B39 GSM: 900/1800
Data transmission TDD-LTE： Max 130Mbps (DL) Max 35Mbps (UL) FDD-LTE
： Max 150Mbps (DL) Max 50Mbps (UL) DC-HSPA+： Max 42Mbps (DL) Max
5.76Mbps (UL) UMTS： Max 384Kbps (DL) Max 384Kbps (UL) TD-SCDMA：
Max 4.2Mbps (DL) Max 2.2Mbps (UL) CDMA： Max 3.1Mbps (DL) Max 1.8Mbps
(UL) EDGE： Max 236.8Kbps (DL) Max 236.8Kbps (UL) GPRS： Max
85.6Kbps (DL) Max 85.6Kbps (UL)
Interface connector USB: USB 2.0 high-speed interface, 480Mbps
digital voice: 1 digital voice interface (optional) USIM：1.8V/3V
network indicator: ×2, NET_STATUS 和 NET_MODE UART：×1 UART reset:
low level PWRKEY: low level antenna interface: 3 (main antenna,
diversity antenna and GNSS antenna interface) ADC：×2
Structure size 51.0mm × 30.0mm × 4.9mm
Weight about 10.5g
Certification CCC/ NAL*/ TA
GNSS function
There are two types of EC20 modules, one is has GNSS and another is no
GNSS. EC20 4G modules sold on firefly's official website do not
support GNSS, and the suffix is "SNNS". EC20 modules that support GNSS
generally have the suffix "SGNS".The public firmware supports GNSS
function, but it is turned off by default. For the use method, please
refer to the chapter
EC20 GNSS function
.
Real figure
Connection
USB connection
Reference firmware
The official website of the public version of the default firmware
support EC20 4G dongle module
[link]
.
EC200T 4G Module suite
Product parameters
Model EC200T-CN Mini PCIe-D
Supply voltage 3.4V~ 4.3V, Typical values: 3.8V
Working frequency band TDD-LTE: B34/B38/B39/B40/B41 FDD-LTE:
B1/B3/B5/B8 WCDMA: B1/B5/B8 GSM: 900/1800 MHz
Data transmission TDD-LTE： Max 120Mbps (DL) Max 3Mbps (UL) FDD-LTE
： Max 150Mbps (DL) Max 50Mbps (UL) DC-HSDPA： Max 21Mbps (DL)
HSDPA: Max 5.76 Mbps (UL) WCDMA: Max 384Kbps (DL) Max 384Kbps (UL)
EDGE: Max 236.8Kbps (DL) Max 236.8Kbps (UL) GPRS： Max 85.6Kbps (DL)
Max 85.6Kbps (UL)
Interface connector USB: USB 2.0 high-speed interface, 480Mbps
digital voice: 1 digital voice interface (optional) USIM：1.8V/3V
network indicator: ×2, NET_STATUS 和 NET_MODE UART：×1 UART
W_DISABLE# for Airplane Mode Control LED_WWAN# for Network Status
Indication PERST# for Module Resetting RI for Host Wake-up
WAKEUP_IN for Sleeping Control, Low Level Active WAKEUP_OUT for
Sleeping Status Indication antenna interface: 2 (main antenna,
diversity antenna)
Structure size 51.0mm × 30.0mm × 4.9mm
Weight about 10.2g
Certification CCC/SRRC/NAL
Real figure
Connection
Please refer to
EC20 4G module suite
.
Reference firmware
The official website of the public version of the default firmware
support EC200T 4G dongle module
[link]
.
GNSS Module
DELINCOMM Series
Product Parameter
The parameters of each module model of this series will be different,
please refer to
DelinComm_gps.pdf
Interface Definition
VCC (red wire),GND (black wire),TX (white wire),RX(green wire)
Instruction
Hardware Connection
Connect the VCC, GND, TX and RX of the module to 3.3V, GND, RX and TX
of ROC-RK3399-PC-PLUS UART0(the corresponding node
is /dev/ttyS0) respectively. Pay attention to avoid burning the module due to wrong connection of
VCC, GND, TX and RX.
For some definitions and descriptions of UART, you can refer to the
wiki tutorial UART.
Software Configuration
The baud rate of DELICOMM series serial port is configured as "9600".
By default, it has been configured in the public firmware and can be
used after enabling GPS. For details, please refer to
How to enable GPS and modify serial port configuration
.
Note
: The GPS function will occupy UART0. If UART0 needs to be used for
other purposes, the GPS needs to be disabled first.
Reference firmware
The new firmware of the public version supports GPS module by default,
but it needs to be turned on manually. Or directly download the
GPS default startup firmware
DK2635U7F Module
Product Parameter
Interface Definition
VCC (white wire),GND (black wire),TX (blue wire),RX(green wire)
Instruction
Hardware Connection
Connect the VCC, GND, TX and RX of the module to 3.3V, GND, RX and TX
of ROC-RK3399-PC-PLUS UART0(the corresponding node
is /dev/ttyS0) respectively. Pay attention to avoid burning the module due to wrong connection of
VCC, GND, TX and RX.
For some definitions and descriptions of UART, you can refer to the
wiki tutorial UART.
Software Configuration
The baud rate of UBLOX module serial port is configured as "9600". By
default, it has been configured in the public firmware and can be used
after enabling GPS. For details, please refer to
How to enable GPS and modify serial port configuration
.
Note
: The GPS function will occupy UART0. If UART0 needs to be used for
other purposes, the GPS needs to be disabled first.
Reference firmware
The new firmware of the public version supports GPS module by default,
but it needs to be turned on manually. Or directly download the
GPS default startup firmware
EC20 GNSS Function
EC20 module supports GPS, GLONASS, GALILEO and BEIDOU, and is
compatible with standard NMEA 0183 protocol. It can output NMEA
information of 1Hz frequency through USB NMEA interface. The default
output serial port is "/dev/ttyUSB1" and baud rate is " 115200" bit/s.
Antenna Requirements
Frequency range:1559MHz~1609MHz
Polarization:RHCP or Linear
VSWR:< 2(Typical)
Active antenna noise figure:< 1.5dB
Active antenna gain:> 0dB
LNA gain embedded in active antenna:< 17dB
Instruction
Hardware Connection
The EC20 module can be connected according to the chapter of
EC20 4G Module suite
, and the GPS antenna is connected to the interface with GPS silk
screen.
Software Configuration
For EC20 module, the serial port node and baud rate configured by GNSS
are "/dev/ttyUSB1" and "115200" respectively. Before using the module,
you need to check whether the value of "SERIAL_DEVICE" or
"SERIAL_BAUD_RATE" in "/system/etc/u-blox.conf" matches it. If you
confirm the matching, you can use it after enabling GPS. Refer to the
enabling method
How to enable GPS and modify serial port configuration
.
Note
: For EC20 module, when using GNSS function, you need to pay attention
to whether has other "ttyUSB*" devices. If there are other "ttyUSB",
the default "ttyUSB" device number of EC20 may be changed, resulting
in the failure of GNSS function.
How to enable GPS and modify serial port Configuration
Glossary:
SERIAL_DEVICE: Serial port node
SERIAL_BAUD_RATE:Serial baud rate
Temporary modification method
Ensure that the firmware is the latest
public firmware
. The firmware turns off the GPS function by default and needs to be
enabled manually. The following is the modification method:
Enable ADB, and how to enable ADB, please refer to wiki tutorial ADB
Use
Set system readable and writable adb shell setprop
persist.sys.root_access 3 adb root && adb remount
Modify Parameters Enabled GPS：Modify the parameter ro.factory.hasGPS
in /system/build.prop(The version above Android7.1 is
/vendor/build.prop) on the machine to true to enable GPS. It will take
effect after soft restarting the machine. Modify serial port
configuration (serial port node or baud rate)：Modify the
SERIAL_DEVICE or SERIAL_BAUD_RATE in /system/etc/u-blox.conf on the
machine to the value of the corresponding module configuration. It
takes effect after soft restarting the machine.
Code modification method
Enabled GPS Modify the BOARD_HAS_GPS in the SDK directory
device/rockchip/rk3399/rk3399_roc_pc_plus.mk(The version above
Android7.1 is
device/rockchip/rk3399/rk3399_roc_pc_plus/rk3399_roc_pc_plus.mk) to
true to enable GPS function. Then, recompile the SDK and upgrad the
firmware to take effect.
Modify serial port configuration (serial port node or baud rate)
Modify the SERIAL_DEVICE or SERIAL_BAUD_RATE in the SDK directory
device/rockchip/rk3399/gps/u-blox.conf(The version above Android7.1 is
device/rockchip/rk3399/rk3399_roc_pc_plus/gps/u-blox.conf) to the
value of the corresponding module configuration. Then, recompile the
SDK and upgrad the firmware to take effect.