Duo Module 01

The Duo Module 01 is a compact module with integrated SG2000, WI-FI6/BTDM5.4, and eMMC. It supports SMD mounting. Also it can greatly save product development time. It is the first choice for making products.

In order to enable you to quickly verify and debug the initial product solution when designing products using Duo Module 01, We also provides an evaluation board (EVB), which is specially designed for the core board and provides rich interfaces and functions.

Introduction of SG2000

SG2000 is a high-performance, low-power chip designed for various product fields such as edge intelligent surveillance IP cameras, local facial recognition attendance machines, and smart home devices. It integrates H.264/H.265 video compression and decoding and ISP capabilities. It supports various image enhancement and correction algorithms like HDR wide dynamic range, 3D noise reduction, defogging, and lens distortion correction, providing customers with professional-grade video image quality.

The chip also integrates an in-house TPU, delivering approximately 0.5TOPS of computing power under INT8 operations. The specially designed TPU scheduling engine efficiently provides high-bandwidth data flow for tensor processing unit cores. It also offers users a powerful deep learning model compiler and software SDK development kit. Mainstream deep learning frameworks such as Caffe, Pytorch, ONNX, MXNet, and TensorFlow (Lite) can be easily ported to this platform.

SG2000 Public Preliminary Datasheet

We have open sourced the Public Preliminary Datasheet and TRM of SG2000 to GitHub. please check it out.

Purchase

Milk-V is the Authorised Global Distributor of the SG2000 chips. You can buy Duo Module 01 and samples of the SG2000 chip from our distributor online store directly. For volume order, please contact Milk-V Sales Team for the qoutation.

Getting Started

Installing the system

tip

The software of Duo Module 01 is compatible with DuoS. Please use the firmware of DuoS directly.

Boot from SD card

Please refer to the Start Up section.
Boot from eMMC

Please refer to: eMMC version firmware burning section.

USB Network Usage

Please refer to the Setup section.

Duo Module 01 GPIO Pinout

GPIO pin mapping

GROUP	ADDR	PORT	CHIP	NUM	NAME	START
gpio0	gpio@03020000	porta	gpiochip0	480-511	XGPIOA	480 - XGPIOA[0]
gpio1	gpio@03021000	portb	gpiochip1	448-479	XGPIOB	448 - XGPIOB[0]
gpio2	gpio@03022000	portc	gpiochip2	416-447	XGPIOC	416 - XGPIOC[0]
gpio3	gpio@03023000	portd	gpiochip3	384-415
gpio4	gpio@05021000	porte	gpiochip4	352-383	PWR_GPIO	352 - PWR_GPIO[0]

Pin Definition

Comming soon...

DuoModule 01 EVB GPIO Pinout

26 PIN Header

GPIO on 26 PIN Header use 3.3V logic levels.

SPI	PWM	I2C	UART	NUM	SG2000	NAME	PIN	PIN	NAME	SG2000	NUM	UART	PWM	SPI	JTAG
						3V3	1	2	VSYS(5V)
	PWM3	I2C4_SCL		468	XGPIOB[20]	B20	3	4	VSYS(5V)
		I2C4_SDA		469	XGPIOB[21]	B21	5	6	GND
		I2C1_SCL		466	XGPIOB[18]	B18	7	8	A16	XGPIOA[16]	496	UART0_TX/UART1_TX	PWM4
						GND	9	10	A17	XGPIOA[17]	497	UART0_RX/UART1_RX	PWM5
	PWM1	I2C1_SDA	UART2_TX	459	XGPIOB[11]	B11	11	12	B19	XGPIOB[19]	467	UART2_TX	PWM2
	PWM2	I2C1_SCL	UART2_RX	460	XGPIOB[12]	B12	13	14	GND
			UART2_RX	470	XGPIOB[22]	B22	15	16	A20	XGPIOA[20]	500				JTAG_TRST
						3V3	17	18	A19	XGPIOA[19]	499	UART1_TX/UART1_RTS	PWM7		JTAG_TMS
SPI3_SDO	PWM3	I2C2_SCL		461	XGPIOB[13]	B13	19	20	GND
SPI3_SDI		I2C2_SDA		462	XGPIOB[14]	B14	21	22	A18	XGPIOA[18]	498	UART1_RX/UART1_CTS	PWM6		JTAG_TCK
SPI3_SCK			UART2_TX	463	XGPIOB[15]	B15	23	24	B16	XGPIOB[16]	464	UART2_RX		SPI3_CS
						GND	25	26	A28	XGPIOA[28]	508	UART2_TX/UART1_TX

Blue LED PIN

NAME	SG2000	NUM
LED	XGPIOA[29]	509

Camera interface

Duo Module 01 EVB has two CSI camera connectors:

J8 is a 16 PIN 0.5mm pitch connector compatible with Duo and Duo256M cameras, and can directly use the CAM-GC2083 camera.
J10 is a 15-pin 1.0mm pitch connector compatible with the Raspberry Pi camera interface. It currently supports the OV5647 camera used on the Raspberry Pi.

Note that the I2C used by the J1 interface is I2C3, and the I2C used by the J2 interface is I2C2. Please check the pin multiplexing configuration when using it.

J8 Connector FPC Definition

J8	Description
1	GND
2	MIPI0_DN0
3	MIPI0_DP0
4	GND
5	MIPI0_DN1
6	MIPI0_DP1
7	GND
8	MIPI0_CKN
9	MIPI0_CKP
10	GND
11	SENSOR_RSTN0 (1.8V)
12	SENSOR_CLK0 (1.8V)
13	I2C3_SCL (1.8V)
14	I2C3_SDA (1.8V)
15
16	3V3

J10 Connector FPC Definition

J10	Description
1	3V3
2	I2C2_SDA (3.3V)
3	I2C2_SCL (3.3V)
4	SENSOR_CLK1 (3.3V)
5	SENSOR_RSTN1 (3.3V)
6	GND
7	MIPI0_DP5 (CAM1_CP)
8	MIPI0_DN5 (CAM1_CN)
9	GND
10	MIPI0_DP4 (CAM1_DP1)
11	MIPI0_DN4 (CAM1_DN1)
12	GND
13	MIPI0_DP3 (CAM1_DP0)
14	MIPI0_DN3 (CAM1_DN0)
15	GND

POE Header

POE Pin	Description
1	VA-
2	VA+
3	VB+
4	VB-

ADC Interfaces

ADC Pin	Description
1	GND
2	3V3
3	1V8
4	ADC1
5	ADC2
6	ADC3

MIPI DSI Screen Interface

LCD Pin	Description	Level
1	VDD3V3	3.3V
2	IOVCC1V8-3V3	1.8V
3	SENSOR-INT
4	RESET	1.8V
5	NC
6	GND1
7	MIPI-0N
8	MIPI-0P
9	GND2
10	MIPI-1N
11	MIPI-1P
12	GND3
13	MIPI-CKN
14	MIPI-CKP
15	GND4
16	MIPI-2N
17	MIPI-2P
18	GND5
19	MIPI-3N
20	MIPI-3P
21	GND6
22	GND7
23	TP-RESET	3.3V
24	TP-VCC	3.3V
25	TP-INT	3.3V
26	TP-SDA	3.3V
27	TP-SCL	3.3V
28	GND8
29	GND9
30	VCC3V31	3.3V
31	VCC3v32	3.3V
32	GND11
33	GND12
34	LED-1
35	LED-
36	NC
37	NC
38	LED+1
39	LED+

RTC Interface

ADC Pin	Description
1	GND
2	Vbat

Audio Interfaces

MIC Pin	Description
1	MIC IN
2	GND

Duo Module 01 EVB User Guide

RISC-V and ARM switching

The large core of Duo Module 01 EVB can choose to use RISC-V or ARM processor, which can be set through the switch on the board. If you find that Duo Module 01 EVB cannot start normally during use, please first check whether the switch is consistent with the firmware used.

If the debug serial port is connected, you can see in the first line of the boot log that starting with C means starting from the RISC-V core, and starting with B means starting from the ARM core.

RISC-V:
```
C.SCS/0/0.C.SCS/0/0.WD.URPL.USBI.USBW
```

ARM:

B.SCS/0/0.WD.URPL.B.SCS/0/0.WD.URPL.USBI.USBW

Usage of USB Type A interfaces

The USB functions of the EVB USB Type A interface and Type C interface are optional and cannot be used at the same time. The default firmware is configured with the USB network port (USB-NCM) function of the Type C port. If you need to switch to the USB 2.0 HOST port of the Type A port for use with USB flash drives and other devices, you need to execute the following command:

ln -sf /mnt/system/usb-host.sh /mnt/system/usb.sh
sync

Then execute the reboot command or power on again to make it take effect.

For example, after connecting a USB flash drive to the USB A port, you can use ls /dev/sd* to check whether the device is detected.

Mount it to the system to view the contents of the USB flash drive (take /dev/sda1 as an example):

mkdir /mnt/udisk
mount /dev/sda1 /mnt/udisk

Check whether the contents of the /mnt/udisk directory are as expected:

ls /mnt/udisk

Command to uninstall USB flash drive:

umount /mnt/udisk

When you want to restore the USB network (USB-NCM) function of the Type C port, execute:

rm /mnt/system/usb.sh
ln -sf /mnt/system/usb-ncm.sh /mnt/system/usb.sh
sync

Then execute the reboot command or power on again to make it take effect.

tip

Duo Module 01 EVB has an onboard Ethernet interface, so the USB network port (USB-NCM) of the Type C port can be used without switching to the USB 2.0 Host function of the A port.

Fixed ethernet port MAC address

If you need to assign a fixed MAC address to the Ethernet port of EVB, please execute the following command:

tip

Replace the MAC address in the command with the MAC address you want to set, and please note that MAC addresses of different devices within the same network segment must not be duplicated

echo "pre-up ifconfig eth0 hw ether 78:01:B3:FC:E8:55" >> /etc/network/interfaces && sync

then reboot the board.

UART Serial Console

Duo Module 01 EVB has a reserved UART debug serial port, which can be used to view the system startup log, or to log in to the console after the system starts and execute some terminal commands.

USB-TTL Serial Cable

The serial port level of Duo series is 3.3V.

The pin definitions of common USB to TTL serial cables are as follows:

Connection

Connect the USB to TTL serial cable as shown below, leaving the red wire unconnected.

Milk-V DouS	<--->	USB to TTL
GND (pin 6)	<--->	Black wire
TX (pin 8)	<--->	White wire
RX (pin 10)	<--->	Green wire

The default serial port parameters of EVB are as follows:

baudrate: 115200
data bit: 8
stop bit: 1
parity  : none
flow control: none

WIFI configuration

Method 1

Edit the following file and replace ssid and psk with the WIFI account and password to be connected:

/etc/wpa_supplicant.conf
ctrl_interface=/var/run/wpa_supplicant
ap_scan=1
update_config=1

network={
  ssid="wifi_test"
  psk="12345678"
  key_mgmt=WPA-PSK
}

Then execute the following command:

wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant.conf

You can connect to WIFI. After connecting, you can view the assigned IP address through the ifconfig or ip a command.

If you need to automatically connect to the WIFI when booting, you can put the following command in the /mnt/system/auto.sh file.

interface="wlan0"
max_attempts=100
attempt=0
log_file="/var/log/auto.sh.log"

# Continuously attempt to detect if the interface exists, up to $max_attempts times
echo "start auto.sh" > "$log_file"
while [ $attempt -lt $max_attempts ]; do
    # Check if the wlan0 interface exists
    ip link show "$interface" > /dev/null 2>&1
    if [ $? -eq 0 ]; then
        echo "$(date +'%Y-%m-%d %H:%M:%S') $interface interface exists, starting wpa_supplicant..." >> "$log_file"
        wpa_supplicant -B -i "$interface" -c /etc/wpa_supplicant.conf >> "$log_file"
        break  # Exit the loop if the interface is found
    else
        echo "$(date +'%Y-%m-%d %H:%M:%S') $interface interface not found, waiting..." >> "$log_file"
        sleep 1  # Wait for 1 second before checking again
        attempt=$((attempt + 1))  # Increment the attempt counter
    fi
done

# If the maximum number of attempts is reached and the interface still not found, output an error message
if [ $attempt -eq $max_attempts ]; then
    echo "$(date +'%Y-%m-%d %H:%M:%S') Interface $interface not found after $max_attempts attempts" >> "$log_file"
fi

Fixed WIFI MAC address

Duo Module 01 EVB WIFI MAC address is randomly assigned. If you need to assign a fixed MAC address to the WIFI of EVB, please execute the following command::

tip

Replace the MAC address in the command with the MAC address you want to set, and please note that MAC addresses of different devices within the same network segment must not be duplicated

echo "MAC_ADDR=11:22:33:44:55:66" > /mnt/system/firmware/aic8800/rwnx_settings.ini && sync

then reboot the board.

eMMC version firmware burning

The Duo Module 01 eMMC version does not have firmware burned and needs to be burned using a PC through the USB interface.

tip

Use the USB burning tool under Windows to support eMMC. The firmware version is V1.1.2 or latest version.

Burning in Windows

Install driver

Download the USB driver installation tool: CviUsbDownloadInstallDriver.zip. After downloading, unzip and install.
Download burning tool

Download the command line burning tool under Windows CviBurn_v2.0_cli_windows.zip, unzip it after downloading.

Download firmware

The firmware of Duo Module 01 is common to that of DuoS. Download the latest version of DuoS eMMC firmware, currently milkv-duos-emmc-v1.1.2-2024-0801.zip, you can create a new rom folder in the burning tool CviBurn_v2.0_cli_windows directory, and extract the downloaded eMMC firmware compressed package to rom directory, the directory structure of the burning tool is as follows:

└───CviBurn_v2.0_cli_windows
 │   cv_dl_magic.bin
 │   usb_dl.exe
 └───rom
     │   boot.emmc
     │   fip.bin
     │   partition_emmc.xml
     │   rootfs_ext4.emmc
     |   ...

In the Windows terminal, execute the burning command in the CviBurn_v2.0_cli_windows directory:

.\usb_dl.exe -s linux -c cv181x -i .\rom

*You can also put the firmware in other directories and specify the corresponding directory through the -i parameter in the command. *

Displays message waiting for USB connection:

Use Type-C data cable to connect EVB and PC (note, if EVB currently has an SD card inserted, please remove the SD card first), EVB will automatically power on and enter the burning mode, and the PC will display the burning status in real time. Recording progress:

[INFO] Waiting for USB device connection: ---
[INFO] found usb device vid=0x3346 pid=0x1000
[INFO] downloading file: .\rom\boot.emmc
[INFO] CVI_USB_PROGRAM
[INFO] updated size: 3384664/213100824(1%)
[INFO] downloading file: .\rom\rootfs_ext4.emmc
[INFO] CVI_USB_PROGRAM
[INFO] updated size: 20161944/213100824(9%)
[INFO] CVI_USB_PROGRAM
[INFO] updated size: 36939224/213100824(17%)
[INFO] CVI_USB_PROGRAM
[INFO] updated size: 53716504/213100824(25%)
[INFO] CVI_USB_PROGRAM
[INFO] updated size: 70493784/213100824(33%)
[INFO] CVI_USB_PROGRAM
[INFO] updated size: 87271064/213100824(40%)
[INFO] CVI_USB_PROGRAM
[INFO] updated size: 104048344/213100824(48%)
[INFO] CVI_USB_PROGRAM
[INFO] updated size: 120825624/213100824(56%)
[INFO] CVI_USB_PROGRAM
[INFO] updated size: 137602904/213100824(64%)
[INFO] CVI_USB_PROGRAM
[INFO] updated size: 154380184/213100824(72%)
[INFO] CVI_USB_PROGRAM
[INFO] updated size: 171157464/213100824(80%)
[INFO] CVI_USB_PROGRAM
[INFO] updated size: 187934744/213100824(88%)
[INFO] CVI_USB_PROGRAM
[INFO] updated size: 204712024/213100824(96%)
[INFO] CVI_USB_PROGRAM
[INFO] updated size: 213100696/213100824(99%)
[INFO] USB download complete

After the burning is completed, the EVB will automatically restart. After booting, you will see the blue LED on the DuoS flashing, indicating that the system has started normally and the burning is successful.

eMMC Erase

If you need to restore the eMMC to its initial state, please refer to the following command to clear the eMMC data (please back up important files in the eMMC in advance):

Unlock readonly

echo 0 > /sys/block/mmcblk0boot0/force_ro
echo 0 > /sys/block/mmcblk0boot1/force_ro

Erase

dd if=/dev/zero of=/dev/mmcblk0boot0 bs=1M count=4
dd if=/dev/zero of=/dev/mmcblk0boot1 bs=1M count=4

Hardware Docs

Others

https://github.com/milkv-duo/duo-files/tree/main/duo-module-01

Duo Module 01

Introduction of SG2000

SG2000 Public Preliminary Datasheet

Purchase

Getting Started

Installing the system

USB Network Usage

Duo Module 01 GPIO Pinout

GPIO pin mapping

Pin Definition

DuoModule 01 EVB GPIO Pinout

26 PIN Header

Blue LED PIN

Camera interface

J8 Connector FPC Definition

J10 Connector FPC Definition

POE Header

ADC Interfaces

MIPI DSI Screen Interface

RTC Interface

Audio Interfaces

Duo Module 01 EVB User Guide

RISC-V and ARM switching

Usage of USB Type A interfaces

Fixed ethernet port MAC address

UART Serial Console

USB-TTL Serial Cable

Connection

WIFI configuration

Method 1

Fixed WIFI MAC address

eMMC version firmware burning

Burning in Windows

eMMC Erase

Hardware Docs

Others

Contributors

Get the latest special offers,
new products information and more
from us.

Duo Module 01

Introduction of SG2000​

SG2000 Public Preliminary Datasheet​

Purchase​

Getting Started​

Installing the system​

USB Network Usage​

Duo Module 01 GPIO Pinout​

GPIO pin mapping​

Pin Definition​

DuoModule 01 EVB GPIO Pinout​

26 PIN Header​

Blue LED PIN​

Camera interface​

J8 Connector FPC Definition​

J10 Connector FPC Definition​

POE Header​

ADC Interfaces​

MIPI DSI Screen Interface​

RTC Interface​

Audio Interfaces​

Duo Module 01 EVB User Guide​

RISC-V and ARM switching​

Usage of USB Type A interfaces​

Fixed ethernet port MAC address​

UART Serial Console​

USB-TTL Serial Cable​

Connection​

WIFI configuration​

Method 1​

Fixed WIFI MAC address​

eMMC version firmware burning​

Burning in Windows​

eMMC Erase​

Hardware Docs​

Others​

Contributors

Get the latest special offers, new products information and morefrom us.

Introduction of SG2000

SG2000 Public Preliminary Datasheet

Purchase

Getting Started

Installing the system

USB Network Usage

Duo Module 01 GPIO Pinout

GPIO pin mapping

Pin Definition

DuoModule 01 EVB GPIO Pinout

26 PIN Header

Blue LED PIN

Camera interface

J8 Connector FPC Definition

J10 Connector FPC Definition

POE Header

ADC Interfaces

MIPI DSI Screen Interface

RTC Interface

Audio Interfaces

Duo Module 01 EVB User Guide

RISC-V and ARM switching

Usage of USB Type A interfaces

Fixed ethernet port MAC address

UART Serial Console

USB-TTL Serial Cable

Connection

WIFI configuration

Method 1

Fixed WIFI MAC address

eMMC version firmware burning

Burning in Windows

eMMC Erase

Hardware Docs

Others

Get the latest special offers,
new products information and more
from us.