RENESAS JP202 Sub-GHz Image Transmission POC
System Overview
This system wirelessly transmits either stored still images or captured data from the camera, and data from
the temperature/humidity sensor in the Sub-GHz band. The receiver displays the received data on the LCD. This demo kit consists of 2 pcs of Sub-GHz modules (QCIOT-000-CWXPOCZ), 1 camera sensor kit
(JP202-CWXCAMPOCZ) and EK-RA6M3 (for transmitting images and data from cameras, temperature, and
humidity sensors) / EK-RA6M3G (received images and data display) boards are required. Also, if you want to check the UART command control operation from a PC, you will need 2 Digilent PmodUSBUART and a USB cable.
There are several power source options for the EK-RA6M3 MCU board. Option 1, the J10 Debug USB, is the easiest to power the system demo.
The JP202 Sub-GHz Wireless Communication Demo Kit Specifications are shown below.
Item Specification
- QCIOT-000-CWXPOCZ dimensions 24.0 mm(width) x 50.8 mm (length), connector is not included
- Transceiver IC (CWX-M) R9A06G062GNP (Renesas)
- RF AMP F1471 (Renesas)
- RF Switch F2977 (Renesas)
- Power-supply IC for RF AMP ISL9113ER7Z-T (Renesas)
- SAW filter B39921B2672P810 (Qualcomm)
- Antenna M620720 (Ethertronics/AVX)
- Wireless function Sub-GHz
- Wireless circuit Modulation Method: FSK / OFDM North America Band: 902 to 928MHz (FCC)
- Europe Band: 863 to 870MHz (CE) Japan Band: 920 to 928MHz (Type certification)
- Control Microcomputer board R7FA6M3AH3CFC (Renesas) on board RA6M3 MCU Graphics
- LCD panel TFT color LCD, 480×272 pixel
- JP202-CWXCAMPOCZ dimensions Camara sensor board: 53.0 mm(width) x 67.3 mm (length)
- PMOD adaptor board: 19.08 mm(width) x 53.0 mm (length)
- CMOS camera Arducam-Mini-5MP-
- Plus Camera element: OV5642
- Framebuffer: 512KB
- Output resolution: 2592×1944、1920×1080、1280×720、 640×480、320×240
- Output format: RAW、YUV RGB、JPEG
- Temperature and humidity sensor HS3001
- Power-supply USB connector: 5V input
- Operating ambient temperature -10 to +60°C
- Operating humidity 20% to 75%
- Power Consumption for Transceiver at SUN-FSK mode 100kbps Transmission supply current@+15.0 dBm: 62mA (VDD=3.3V) Reception supply current@ -95 dBm: 16.7mA (VDD=3.3V)
- Power Consumption for Transceiver at SUN-OFDM mode 100kbps Transmission supply current@+10.0 dBm: 68mA (VDD=3.3V) Reception supply current@-95 dBm: 21.5mA (VDD=3.3V)
Hardware Setup
This system consists of an evaluation board equipped with a camera module to which a camera and
temperature/humidity sensor are connected, and an evaluation board equipped with an LCD. Each setup method is shown below.
Board connection for camera module
Connect the camera module and PmodUSBUART board (when using communication with a PC) to the camera module board in the direction shown in the photo.
Connect the camera module board to the Arduino connector of the RA6M3 MCU evaluation board.
Sub-GHz module connection
Connect the Sub-GHz module to the PMOD1 connector (J26) on the EK-RA6M3 board.
Switch Operation
The behavior of the user switches on the EK-RA6M3 board is shown below.
SW behavior
- S1 Toggle to switch between OFDM and FSK
- S2 [Transmitting saved images] Short-press to send pre-stored image data. The image (2 types) switches with each short press. [Transmitting camera images] Press and hold (3 seconds or more) to continuously send data captured by the camera. Short-press during transmission to stop transmission
User LED behavior
The behavior of the user LEDs on the EK-RA6M3 board is shown below.
- LED 1 (blue) lights up in OFDM mode
- LED 2 (green) lights up in FSK mode
- LED 3 (red) lights up during transmission
Evaluation board with LCD
LCD connection
Connect the graphics expansion board that comes with the evaluation kit to J1 of the MCU pin direct access
area on the EK-RA6M3 board.
Sub-GHz module connection
Connect the Sub-GHz module to the PMOD1 connector (J26) on the EK-RA6M3 board.
PC connection board
Connect the PC connection board to J23 and J24 of the Arduino connector on the RA6M3 MCU evaluation board.
User switch operation
The behavior of the user switches on the EK-RA6M3 board is shown below.
SW behavior
- S1 Toggle to switch between OFDM and FSK
User LED operation
The behavior of the LEDs on the EK-RA6M3 board is shown below.
LED behavior
- LED1(blue) lights up in OFDM mode
- LED2(green) lights up in FSK mode
LCD
Displays transmitted saved data or camera images, temperature/humidity, and wireless throughput.
Wireless settings
A UART connection enables wireless settings from a PC. The radio PHY settings can be changed with the characterization program commands. The serial settings of the terminal software are as follows.
Serial settings:
Setting items Value
- Baud rate 500000bps
- Data 8bit
- Parity None
- Stop bit 1bit
- Flow control None
- Line feed code Receive： LF or AUTO Transmit: LF
- Local echo Enable
PHY Operation Mode (Sub-GHz Transceiver Transmit/Receive Operation Mode)
- tope [modulation] [domain (NS/JP/EU/JP)] [phytype] [phymode] [ChanPlanID]
- tope [modulation][domain (UD)] [phytype] [phymode] [chspace] [chfreq0]
Default Settings
FSK mode PhyOperatingMode Setvalue =FSK / JP / 2FSK without FEC / 200Kbps M=1.0 #4b / ChanPlan:23 OFDM mode PhyOperatingMode Setvalue =OFDM / JP / OFDM Option2 / MCS4 / ChanPlan:24 The default TX power i -17dBmm for both FSK/OFDM.
The settings and commands are as follows.
How to change the saved image
Static images for the TX sample project are stored as ARGB56565 pixel data arrays in the following header files:
- tx/platform/ra6x/src/ra6m3/src/staticimage1.h
- tx/platform/ra6x/src/ra6m3/src/staticimage2.h
- To generate new RGB565 header files from a different image, use the img2rgb565 tool:
- tx/images/img2rgb565.exe
The tool accepts a path to an image RENESAS JP202 Sub-GHz Image Transmission POC file as a parameter, for example:
- img2rgb565.exe staticimage1.png
Will generate staticimage1.h file in the current directory. Optionally, the destination file name can be specified as a second parameter:
- img2rgb565.exe staticimage1.png ../platform/ra6x/src/ra6m3/src/staticimage1.h
- Note that the image file must be named `staticimage1.*` or `staticimage2.*` so that generated .h files have correct variable names (img_staticimage1 and img_staticimage2). The image resolution must be 320×240 pixels. The tool currently supports BMP, PNG, JPEG, and GIF file formats.
Certification of Compliance
This product complies with the laws and regulations described below.
Radio-Related Laws
North America: FCC ID：2AEMX JP202CWXPZ
Europe: CE (RE)
Japan: Type certification
FCC Regulatory
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. JP202-CWXCAMPOCZ module is for demonstration and evaluation purposes only.
FCC Statements
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment and meets the FCC radio frequency RENESAS JP202 Sub-GHz Image Transmission POC (RF) Exposure Guidelines.
This equipment has very low levels of RF energy that it deemed to comply with the maximum permissible exposure evaluation (MPE). This device complies with FCC Part 15.203 because the antenna is not removable from this device. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used according to the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Consult the dealer or an experienced radio/TV technician for help.
- Use of other accessories may not ensure compliance with FCC RF exposure guidelines.
Revision History
Customer Support
- Website: https://www.renesas.com/
- Ph: (408) 284-8200.