7.7 Virtual COM port
The integrated ST-LINK provides a Virtual COM port over the USB interface. It is connected to the USART1 of
STM32U585AI.
For the demonstration software programmed when the board is shipped, the parameters are 115200 bit/s,
8‑bit data, no parity, one stop bit, and no flow control.
7.8 RF modules
Two RF interfaces are available on the B-U585I-IOT02A Discovery kit:
1. Bluetooth
®
(V5.0 compliant) STM32WB5MMG module with integrated antenna
2. EMW3080 802.11 b/g/n compliant Wi‑Fi
®
module from MXCHIP with integrated antenna
7.8.1
Bluetooth
®
(V5.0 compliant) STM32WB5MMG
The STM32WB5MMG is an ultra-low-power and small‑form‑factor‑certified 2.4GHz wireless module. It
supports Bluetooth
®
Low Energy V5.0, Zigbee
®
3.0, OpenThread, dynamic and static concurrent modes, and
802.15.4 proprietary protocols. Based on the STMicroelectronics STM32WB55VGY wireless microcontroller,
STM32WB5MMG provides best-in-class RF performance thanks to its good receiver sensitivity and a high
output power signal. Its low-power features enable extended battery lifetime, small coin-cell batteries, or energy
harvesting.
The STM32WB5MMG requires no RF expertise and is the best way to speed up any development and reduce
associated costs. The module is completely protocol stack royalty-free.
Figure 16. STM32WB5MMG RF module
The main features of the STM32WB5MMG module are listed below:
• Bluetooth
®
V5.0 compliant (support of Master and Slave modes, multiple roles supported simultaneously)
• Embedded Bluetooth
®
Low Energy protocol stack (GAP, GATT, SM, L2CAP, LL, RFPHY)
• Bluetooth
®
Low Energy profiles provided separately
• Bluetooth
®
radio performance
– Tx power: + 4 dBm
• Host interface: SPI, IRQ, and RESET. On-field stack upgrading available via UART
• Certification: CE qualified, FCC, IC modular approval certified, BQE qualified
• On-board chip antenna
UM2839
Virtual COM port
UM2839 - Rev 4
page 23/54
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