novus 802.15.4 Module Instruction Manual
- June 6, 2024
- Novus
Table of Contents
- NOVUS Air - IEEE 802.15.4 module
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
NOVUS Air - IEEE 802.15.4 module
INSTRUCTIONS MANUAL V0.2
Hardware Version: V4A
Firmware Version: 0.4.106
1. INTRODUCTION
NOVUS Air IEEE 802.15.4 module is a low energy microcontrolled RF transceiver
solution for 2.4 GHz IEEE 802.15.4 protocol. The device was developed to
complement Novus Automation Inc. solutions, providing a modular wireless
communication interface to its products. Any application protocol based on the
IEEE 802.15.4 standard may be implemented. The module is intended to operate
integrated in industrial automation solutions provided by Novus Automation
Inc. and its partners and is not intended to be sold separately.
The physical interface is implemented through the transceiver Atmel AT86RF233,
controlled by the ATSML21 chip, a 32-bit Arm Cortex-M0 microcontroller which
implements the MAC layer of IEEE 802.15.4 stack and the AT commands to be used
in the application firmware. NOVUS Air can be controlled and configured by
sending AT commands from a host microcontroller through UART interface.
2. BLOCK DIAGRAM
Figure 1: NOVUS Air Block diagram
3. SPECIFICATIONS
Table 1: Specifications
| Model | NOVUS Air IEEE 802.15.4 Module |
|---|---|
| Power | 3.3V |
| Communication | IEEE 802.15.4 |
| Communication Frequency | 2400.0 to 2483.5 MHz |
| Modulation | O-QPSK |
| Data Rate | 250 kbps |
| Channels | 15 |
| Peak RF Output Power | 20.10 dBm |
| Dimensions | 49 x 32.5 x 13 mm + Antenna 105 mm. |
| Operating Temperature | -10 to 70ºC |
| Firmware Version | 0.4.106 |
Figure 2 NOVUS Air external construction
4. PIN DESCRIPTION
Table 2: Pin description
| Pin | Name | Description |
|---|---|---|
| 1 | VCC | 3.3V |
| 2 | GPIO_1 | General Purpose Input/Output |
| 3 | GPIO_2 | General Purpose Input/Output |
| 4 | SWDIO | Serial Wire debug Data Input/Output |
| 5 | GPIO_3 | General Purpose Input/Output |
| 6 | SWCLK | Serial Wire Clock |
| 7 | WAKEUP_STM32L4 | Wake external microcontroller |
| 8 | RST_IEEE_802_15_4 | Reset IEEE 802.15.4 Module |
| 9 | GPIO_ 4 | General Purpose Input/Output |
| 10 | WAKE_IEEE_802_15_4 | Reset IEEE 802.15.4 Module |
| 11 | GPIO_5 | General Purpose Input/Output |
| 12 | USART_STM32L4_TX | External microcontroller UART TX |
| 13 | USART_STM32L4_RX | External microcontroller UART RX |
| 14 | GND | Ground |
Figure 3: Conector schematics
5. ANTENNA CHARACTERISTICS
Table 3: Antenna characteristics
| Model | AR0035EW0119N |
|---|---|
| Antenna Type | Omni-directional |
| Average Gain | 2 dBi |
| Peak Gain (2400 Hz) | 2.54 dBi |
| Directivity (2400 Hz) | 3.64 dBi |
| Efficiency (2400 Hz) | -1.1 dB |
For more detailed information, please refer to the Wellshow AR0035EW0119N antenna datasheet.
6. CONNECTION AND INSTALLATION
6.1 MECHANICAL INSTALLATION
NOVUS Air is designed to be integrated to NOVUS Automation Inc. products for industrial applications, which have their own enclosure. A distance of 20 cm shall be maintained between the antenna and users, and the transmitter module may not be co-located with any other transmitter or antenna
6.2 ELECTRICAL INSTALLATION
NOVUS Air has power supply connectors and supports the Universal Asynchronous Receiver/Transmitter (UART) interface, which allows interaction with the host microcontroller. Pin map is presented in Figure 3, while more detailed description of pin functionalities is provided in Table 2.
7. AT COMMANDS
NOVUS air supports the Universal Asynchronous Receiver/Transmitter (UART)
interface. A set of AT commands to control and configure wireless
communication is already implemented in the embedded firmware, guaranteeing
that all data will be treated as input by the IEEE 802.15.4 application
firmware.
The default configuration for accessing the UART interface of novus Air is
mentioned below:
- Baud rate: 115200
- Data: 8 bit
- Parity: None
- Stop bit: 2 bit
- Flow control: None
The list of all implemented AT commands is available as an appendix of this
document.
To apply each configuration, you need to send the commands in the sequence: at
- pibconfstore and at + armreset. Check that each command gives an OK confirmation. If not, repeat the command.
8. POWER LEVEL
The transceiver power level can be set by the AT command “at+ PLEVEL=<>”.
Possible Transceiver Power Level values are <4, 3, 2, 1, 0, -1 , -2, -3, -4,
-6, -8, -12 or -17> in dbm.
PA can be enabled by sending the command “at+PASTATE1”, what provides a +20
dBm gain. The maximum Transmission Power of the module is 20 dBm, what implies
that when PA is enabled the transceiver power level is limited to a maximum of
0 dBm by the firmware.
Note on RF Output Power Setting: In order to comply with FCC requirements, the NOVUS AIr module has the following power shaping requirements implemented:
- Limit to power level -8 when PA is active (plevel= -8 and PASTATE1) for channels 25 with channel 26 being disabled.
9. POWER CONSUMPTION
The following table presents current consumption (in Amperes) related to different power levels. PLEVEL is the selected transceiver power level, while Plevel is the power level of the device. The 20 dBm summed between PLEVEL and Plevel is due to the 20 dBm gain of the on-board PA.
Table 4: Power consumption with PA enabled
| PLEVEL | Plevel | PTX (A) | RX (A) |
|---|---|---|---|
| 0 | 20 | 0,135 | 0,01542 |
| -1 | 19 | 0,127 | 0,01542 |
| -2 | 18 | 0,118 | 0,01542 |
| -3 | 17 | 0,104 | 0,01542 |
| -4 | 16 | 0,094 | 0,01542 |
| -6 | 14 | 0,079 | 0,01542 |
| -8 | 12 | 0,065 | 0,01542 |
| -12 | 8 | 0,048 | 0,01542 |
| -17 | 3 | 0,039 | 0,01542 |
10. AGENCY CERTIFICATIONS
10.1 FCC
FCC ID: 2AXVW-NOVUSAIR
The NOVUS Air module has been certified under FCC part 15 Subpart C “Intentional Radiators” single-modular approval in accordance with Part 15.212 Modular Transmitter approval. Single-modular transmitter approval is defined as a complete RF transmission sub-assembly, designed to be incorporated into another device.
NOTE: This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more
of the following measures:
–Reorient or relocate the receiving antenna.
–Increase the separation between the equipment and receiver.
–Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
–Consult the dealer or an experienced radio/TV technician for help.
The NOVUS Air module has been certified by the FCC for use with other products
without additional certification. Any modifications to this product may
violate the rules of the Federal Communications Commission and make operation
of the product unlawful.
Per Sections 15.107 and 15.109, the end product must be tested for
unintentional radiators compliance.
RF Exposure: A distance of 20 cm shall be maintained between the antenna and users, and the transmitter module may not be co-located with any other transmitter or antenna.
RF Output Power Setting: In order to comply with FCC requirements, the NOVUS AIr module has the following power shaping requirements implemented:
- Limit to power level -8 when PA is active (plevel= -8 and PASTATE1) for channels 25 with channel 26 being disabled.
Approved Antenna Types: To maintain modular approval in the United
States, only the antenna types that have been tested shall be used. It is
permissible to use different antenna provided the same antenna type and
antenna gain (equal to or less than) is used. An antenna type comprises
antennas having similar in-band and out-of-band radiation patterns.
The NOVUS Air modules has been tested with Wellshow AR0035EW0119N antenna.
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
LABELING INSTRUCTIONS
NOVUS Air has been labeled with its own FCC ID number and, if the FCC ID is not visible when the module is installed inside another device, then the outside of the finished product into which the module is installed must display a label referring to the enclosed module. This exterior label should use the following wording:
Contains FCC ID: 2AXVW-NOVUSAIR
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.
10.2 ANATEL
This device does not provide protection against harmful interference and may
not cause interference in a properly authorized system.
For more information, see ANATEL’s website:
www.anatel.gov.br.