Silicon Radar SiRad Easy Manuel utilisateur

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SiRad Easy® / Simple®

User Guide

Status:

Date:

Author:

Filename:

Release

27-Apr-2021

Silicon Radar GmbH

UserGuideˍSiRadˍEasyˍSimple

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2.4

1of 13

Document:

Annex to VAˍU03ˍ01

Anlage 8ˍTemplateˍDatenblattˍRevE

Date: 19-May-2020

Rev D

Silicon Radar GmbH

Im Technologiepark 1

15236 Frankfurt (Oder)

Germany

fon +49 (0) 335 228 80 30

fax +49 (0) 335 557 10 50

https://www.siliconradar.com

https://wiki.siliconradar.com

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Evaluation Kit SiRad Easy® / SiRad Simple®

User Guide Version 2.4 27-Apr-2021

Version Control

Version

Changed section

Description of change

Reason for change

1.0

all

Initial document

2.0

all

Content and appearance

Hardware & firmware update

2.1

5.1

Firmware info for flashing

Added info for older Easy Kits

2.2

Added section

Added mechanical drawing

2.3

all

Software updates

Updates

2.4

all

Combined Easy and Simple User Guide

Software updates

Table of Contents

1Overview .............................................................................................................................. 4

1.1 Features ...................................................................................................................................................4

1.2 Application ...............................................................................................................................................5

2Hardware Setup SiRad Easy®................................................................................................. 5

2.1 Changing the Radar Front End .................................................................................................................5

2.2 Data Connection Mode - External Header (J1) ........................................................................................6

2.2.1 Serial/USB Data Connection.....................................................................................................................6

2.2.2 Wireless Data Connection........................................................................................................................6

2.3 Firmware Update .....................................................................................................................................7

2.3.1 Microcontroller Board..............................................................................................................................7

2.3.2 WiFi Module.............................................................................................................................................7

2.3.3 USB Controller Firmware .........................................................................................................................8

3Hardware Setup SiRad Simple®.............................................................................................. 8

3.1 Data Connection Mode - External Header (J1) ........................................................................................8

3.1.1 Serial/USB Data Connection.....................................................................................................................8

3.1.2 Wireless Data Connection........................................................................................................................9

3.2 Firmware Update .....................................................................................................................................9

3.2.1 Microcontroller ........................................................................................................................................9

3.2.2 WiFi Module...........................................................................................................................................10

4Mounting a Lens (Optional) ................................................................................................. 11

5Communication Interfaces (SER1/SER2)............................................................................... 11

References ....................................................................................................................................... 12

Disclaimer ........................................................................................................................................ 13

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List of Figures

Figure 1 SiRad Easy® (left) and SiRad Simple® (right)............................................................................................4

Figure 2 24 GHz configuration ...............................................................................................................................5

Figure 3 122 GHz configuration with lens assembled............................................................................................5

Figure 4 External header (J1) pinout......................................................................................................................6

Figure 5 Hardware configuration for Serial/USB connection ................................................................................6

Figure 6 Hardware configuration for WiFi connection ..........................................................................................7

Figure 7 WiFi module update configuration..........................................................................................................7

Figure 8 WiFi module select switch SW1...............................................................................................................7

Figure 9 External header (J1) pinout......................................................................................................................8

Figure 10 UART pinout on J1 (left) and Serial/USB (FTDI) cable connection at J1 (right)........................................9

Figure 11 WiFi pinout on J1 (left) and WiFi mode configuration (right)..................................................................9

Figure 12 Firmware update configuration.............................................................................................................10

Figure 13 WiFi module update configuration........................................................................................................10

Figure 14 Mounting a lens on the SiRad Simple® ..................................................................................................11

Figure 15 Terminal output of the evaluation kit (left) and Octave (right).............................................................11

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Evaluation Kit SiRad Easy® / SiRad Simple®

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1Overview

SiRad Easy® and SiRad Simple® evaluation kits are experimental showcase systems for Silicon Radar’s integrated

IQ transceivers [1] with antennas in chip / package and on board. The systems measures distance and velocity

using FMCW or CW radar principles (frequency modulated continuous wave or continuous wave principles).

SiRad Easy® consists of an evaluation baseband board and a microcontroller board. The baseband can hold

exchangeable radar front ends (24 GHz to 300 GHz), all stackable as shown in Figure 1 (left). SiRad Simple®

consists of one 122 GHz evaluation board and a lens assembly as shown in Figure 1 (right).

The evaluation kits come with a free graphical user interface (WebGUI) - for user-friendly parametrization of the

baseband board and multiple visualization modes for radar data. Due to the flexibility of the system, it can be

used to change radar parameters on-the-fly, to learn the basics of radar signal processing, or to find specific

parameter settings for a certain application.

Figure 1 SiRad Easy® (left) and SiRad Simple® (right)

1.1 Features

Serial/USB or WiFi communication to PC,

microcontroller for triggering, signal processing and target recognition for up to 16 targets

simultaneously, transfer to the host system,

web-based graphical user interface to change relevant parameters, plot the FFT of the baseband

channels, display the distance and velocity measurements and the target list,

phase locked loop (PLL) to adjust the start and stop frequencies,

programmable FMCW / CW parameters,

analog signal conditioning to amplify and filter the I and Q output signals of the transceiver,

Analog-to-Digital-converter to digitize the I and Q receiver signals,

DC-DC conversion to provide single supply from USB or an external DC supply.

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1.2 Application

SiRad Easy® and SiRad Simple® are supposed to be used for short-term evaluation purposes in laboratory

environments. Please see our disclaimer at the end of this document.

IMPORTANT:

The radar front ends are able to use a larger bandwidth than what is allowed in the ISM bands. In most

countries, the bandwidth is limited to 1 GHz between 122 GHz and 123 GHz for production purposes by law.

Please check your local regulations. It remains the customer’s responsibility to assure the operation of the front

end according to local regulations, especially when applying to frequency band allocations outside of the

laboratory environment. Silicon Radar and its distributors will not accept any responsibility for consequences

resulting from the disregard of these instructions and warnings.

2Hardware Setup SiRad Easy®

2.1 Changing the Radar Front End

Figure 2 and Figure 3 show the SiRad Easy® with 24 GHz and 122 GHz radar front end boards mounted. Follow the

instructions below for changing the front end board.

Figure 2 24 GHz configuration

Figure 3 122 GHz configuration with lens assembled

Disassembly

Disconnect the power from the Evaluation Kit.

Remove the radar front end from the top of the baseband board. Grab the short edges and pull it straight

out of its connections. Do not tilt or bend the front end. You don’t need to remove the baseband board

from the microcontroller board to exchange the front end board.

Assembly

The radar front end can only be connected one way since the connector pins are different. Slightly press it

down and make sure no pins are bent during the process.

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2.2 Data Connection Mode - External Header (J1)

The external header in Figure 4 is used to connect to the sensor board in different operating modes (data transfer

over Serial/USB or WiFi). In programming mode, the external header is used to program either the WiFi module

or the microcontroller, please see Section 2.3. The external header can also be used to trigger measurements

manually via the trigger line (TR), also see the section about trigger options in the Protocol Description [2].

Description

+5V

GND

microcontroller TX*

microcontroller RX*

external trigger line*

WiFi TX*

WiFi RX*

(*) 3.3V tolerant only!

Figure 4 External header (J1) pinout

2.2.1 Serial/USB Data Connection

Put jumper JP5 on the microcontroller board in the U5V setting as shown in Figure 5 (left). Remove all jumpers

from the external header (J1) on the baseband board shown in Figure 5 (middle). Bring the WiFi switch SW1 on

the baseband board in the OFF position as shown in Figure 5 (right).

Figure 5 Hardware configuration for Serial/USB connection

SiRad Easy® can now be connected to a PC using a USB cable.

We recommend using an active USB Hub between the PC and SiRad Easy®.

Alternatively, the board can be powered by a 5V DC power supply via the external header (pins 5V and any of the

four GD pins).

2.2.2 Wireless Data Connection

In WiFi mode, the external header (J1) is used to connect the WiFi module to the microcontroller on the board.

Put jumper JP5 on the microcontroller board in the E5V setting as shown in Figure 6 (left). Use jumpers to connect

the MT/WR and MR/WT lines of the external header (J1) on the baseband board as shown in Figure 6 (middle).

Apply power from a DC source: +5V to the 5V pin and GND to the any GD pin of the external header (J1). Bring the

WiFi switch SW1 on the baseband board in the ON position as shown in Figure 6 (right).

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Evaluation Kit SiRad Easy® / SiRad Simple®

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Figure 6 Hardware configuration for WiFi connection

2.3 Firmware Update

Please also see the Firmware Update Wiki page [6] for detailed information about firmware updates and the

Download Area to download esptool for flashing the WiFi.

2.3.1 Microcontroller Board

To update or change the microcontroller firmware, the board has to be connected to the PC via the USB port. It

opens a new mass storage device called NODE_F303RE in the Windows Explorer. Drag and drop the .bin file that

you want to flash on that device. LD1 on the board starts flashing red and green. As soon as the flashing stops, the

board is programmed and after a reset the new firmware should be running. Alternatively, you can use ST-LINK

Utility to flash the firmware on the microcontroller board.

2.3.2 WiFi Module

Connect the SiRad Easy® using a Serial/USB (FTDI) cable or Serial/USB adapter as shown in Figure 7 using the

external header (J1). Please read Section 2.2 about the external header connection. Then connect cable TX to WR

(WiFi RX) and cable RX to WT (WiFi TX).

Make sure to use a cable with 3.3V TTL levels!

Switch SW1 to the PROG position.

Figure 7 WiFi module update configuration

Figure 8 WiFi module select switch SW1

Download esptool. Copy the desired firmware into a folder together with esptool. Edit the batch file esptool.bat

and replace the COM port with the COM port of your Serial/USB (FTDI) cable or Serial/USB adapter and the

firmware name with the desired firmware, for example:

esptool -bz 1M -cp COMx -cf websocket_mini.ino.generic.bin

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The baud rate for flashing the firmware needs to be 1 Mbaud. Run the batch file and the WiFi module gets

programmed, indicated by a flashing blue LED. The programming is finished after about 40 seconds. Switch the

DIP switch WP back to the OFF position and connect a jumper between MT and WR and MR and WT on the

external header (J1).

2.3.3 USB Controller Firmware

Download and extract the ST-LINK firmware update tool. Go into the AllPlatforms folder and start the .jar file.

Connect the SiRad Easy®, click Refresh device list and then Open in update mode to see the current USB controller

firmware. Click Upgrade to flash it to the latest version.

3Hardware Setup SiRad Simple®

3.1 Data Connection Mode - External Header (J1)

The external header in Figure 9 is used to connect to the sensor board in different operating modes. In UART

mode, the external header is used to connect a UART cable with RX/TX lines and power supply to the sensor

board. The data connection setup via UART is explained in Section 2.2.1. In WiFi mode, the external header is

used to connect the WiFi module to the microcontroller on the board. The wireless data connection setup via

WiFi is explained in Section 2.2.2. In programming mode, the external header is used to program either the WiFi

module or the microcontroller, please see Section 2.3. The external header can also be used to trigger

measurements manually via the external trigger line (TR), also see the section about trigger options in the

Protocol Description [2].

Description

+5V

GND

microcontroller TX*

microcontroller RX*

external trigger line*

WiFi TX*

WiFi RX*

* 3.3V tolerant only!

Figure 9 External header (J1) pinout

3.1.1 Serial/USB Data Connection

The UART interface pins of the sensor board are shown in Figure 10 (left). You can use the UART interface to

connect the sensor board to a PC or in a target application with a serial interface. Figure 10 (right) shows the

sensor board with a Serial/USB (FTDI) cable or Serial/USB adapter attached to the external header (J1), which

provides a virtual serial port via USB to a PC.

Make sure to use a cable with 3.3V TTL (TX/RX) levels!

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Evaluation Kit SiRad Easy® / SiRad Simple®

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Figure 10 UART pinout on J1 (left) and Serial/USB (FTDI) cable connection at J1 (right)

The Serial/USB (FTDI) cable’s VCC is connected to +5V, the cable’s GND to any GD pin (there are four), the cable’s

RX to the TX line of the microcontroller (MT) and the cable’s TX to the RX line of the microcontroller (MR).

Make sure that both DIP switches are in their OFF positions and the power jumper (J2) for the WiFi module is

open (switched off).

3.1.2 Wireless Data Connection

The WiFi interface pins of the sensor board are shown in Figure 11 (left). To run the sensor in WiFi mode, use the

three jumpers delivered with the sensor and close the power jumper (J2) for the WiFi module (switched on) and

connect two jumpers between MT/WR and MR/WT on the external header (J1). Apply +5V to the 5V pin and GND

to the any GD pin (there are four).

Figure 11 WiFi pinout on J1 (left) and WiFi mode configuration (right)

3.2 Firmware Update

Please also see the Firmware Update Wiki page [6] for detailed information about firmware updates and the

Download Area to download the stm32flash tool for flashing the firmware or esptool for flashing the WiFi.

3.2.1 Microcontroller

To update or change the microcontroller firmware, the board has to be set in bootloader mode, as shown in

Figure 12. This is done by switching the DIP switch MP to the ON position. Then connect the module to the PC via

a Serial/USB (FTDI) cable or Serial/USB adapter using the external header (J1). Please read Section 3.1 about the

external header connection. Connect line TX to MR (microcontroller RX) and line RX to MT (microcontroller TX).

Make sure to use a cable with 3.3V TTL levels!

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Evaluation Kit SiRad Easy® / SiRad Simple®

User Guide Version 2.4 27-Apr-2021

Download the stm32flash tool. Copy the desired firmware into a folder together with the stm32flash tool. Edit the

batch file stm32flash.bat and replace the COM port with the COM port of your Serial/USB (FTDI) cable or

Serial/USB adapter and the firmware name with the desired firmware, for example:

stm32flash.exe -b 115200 -w <date>_SiRad_Simple_L8_<version>.bin -v -g 0x0 COMx

The baud rate for flashing the firmware needs to be 115200 baud. Run the batch file and the microcontroller gets

programmed. After about 30 seconds the programming is finished. Switch the DIP switch MP back to the OFF

position and do a power cycle to reset the module.

3.2.2 WiFi Module

Connect the sensor using a Serial/USB (FTDI) cable or Serial/USB adapter as shown in Figure 13 using the external

header (J1). Please read Section 3.1 about the external header connection. Switch the DIP switch WP to the ON

position. Then connect cable TX to WR (WiFi RX) and cable RX to WT (WiFi TX).

Make sure to use a cable with 3.3V TTL levels!

Now connect the power Jumper J2 to enable the supply voltage for the WiFi module.

Figure 12 Firmware update configuration

Figure 13 WiFi module update configuration

Download esptool. Copy the desired firmware into a folder together with esptool. Edit the batch file esptool.bat

and replace the COM port with the COM port of your Serial/USB (FTDI) cable or Serial/USB adapter and the

firmware name with the desired firmware, for example:

esptool -bz 1M -cp COMx -cf websocket_mini.ino.generic.bin

The baud rate for flashing the firmware needs to be 1 Mbaud. Run the batch file and the WiFi module gets

programmed, indicated by a flashing blue LED. The programming is finished after about 40 seconds. Switch the

DIP switch WP back to the OFF position and connect a jumper between MT and WR and MR and WT on the

external header (J1).

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