Introducing the LoRa® Discovery Kit from STMicroelectronics enabling quick development of IoT applications
STMicroelectronics have launched the B-L072Z-LRWAN1 LoRa® Discovery kit, this development tool is designed to help engineers learn about and develop solutions based on LoRa® and FSK/OOK technologies.
The Discovery kit features an all-in-one open LoRa module CMWX1ZZABZ by Murata. The Murata module is powered by STMicroelectronics STM32L072CZ MCU and the SX1276 transceiver from SEMTECH. Furthermore the on-board STM32L072CZ MCU is open allowing use of all the STM32 tools with the module. The transceiver features the LoRa® long-range modem, providing ultra-long-range spread spectrum communication and high interference immunity, minimizing current consumption. The CMWX1ZZABZ from Murata is an open module giving the user access to all STM32L072 peripherals such as ADC, 16-bit timer, LP-UART, I2C, SPI and USB 2.0 FS (supporting BCD and LPM).
The B-L072Z-LRWAN1 Discovery kit includes an ST-LINK/V2-1 embedded debug tool interface, LEDs, push-buttons, antenna, Arduino™ Uno V3 connectors and USB OTG connector in Micro-B format.
The LoRaWAN™ stack is certified class A and C compliant and is available in the I-CUBE-LRWAN firmware package. Several examples, as an AT-command stack, are also available to help users setting up a complete LoRaWAN™ node.
Key Features
- CMWX1ZZABZ LoRa® module by Murata
- Embedded ultra-low-power STM32L072CZ Series MCUs, based on ARM® Cortex® -M0+ core, with 192 Kbytes of Flash memory, 20 Kbytes of RAM, 20 Kbytes of EEPROM
- USB 2.0 FS
- 4-channel,12-bit ADC, 2xDAC
- 6-bit timers, LP-UART, I2C and SPI
- Embedded SX1276 transceiver
- LoRa® , FSK, GFSK, MSK, GMSK and OOK modulations
- +14 dBm or +20 dBm selectable output power
- 157 dB maximum link budget
- Programmable bit rate up to 300 Kbit/s
- High sensitivity: down to -137 dBm
- Bullet-proof front end: IIP3 = -12.5 dBm
- 89 dB blocking immunity
- Low RX current of 10 mA, 200 nA register retention
- Fully integrated synthesizer with a resolution of 61 Hz
- Built-in bit synchronizer for clock recovery
- Sync word recognition
- Preamble detection
- 127 dB+ dynamic range RSSI
- SMA and U.FL RF interface connectors
- Including 50 Ohm SMA RF antenna
- On-board ST-LINK/V2-1 supporting USB re-enumeration capability
- USB ST-LINK functions:
- Board power supply: Through USB bus or external VIN /3.3 V supply voltage or batteries
- 3xAAA-type-battery holder for standalone operation
- 7 LEDs
- 4 general-purpose LEDs
- A 5 V-power LED
- An ST-LINK-communication LED
- A fault-power LED
- 2 push-buttons (user and reset)
- Arduino™ Uno V3 connectors
