STMicroelectronics P-NUCLEO-LRWAN2, Руководство пользователя

Страница: 8 / 55

1.2.1 Gateway expansion board
The LRWAN_GS_HF1 gateway expansion board shown in Figure 6 is designed by RisingHF (www.risinghf.com).
It includes a Semtech SX1301 digital baseband circuit integrating the LoRa
®
concentrator, Semtech SX1257 HF
front-end transceiver module, and two SAW filters to achieve a wider bandwidth range (868 MHz to 915 MHz).
The expansion board is controlled by the
NUCLEO-F746ZG via the SPI interface.
The gateway expansion board includes also an ex5 V power supply circuitry, which powers both the
gateway expansion board and NUCLEO-F746ZG development board. The NUCLEO-F746ZG is powered via pin
VIN (Pin 15 of connector CN8 on the Nucleo board).
For more details, refer to
[3] .
Figure 6. Gateway expansion board (P-NUCLEO-LRWAN2)
LF/HF identification
VIN
PF5 – GPIO4
PF10 – GPIO3
USB for external 5 V supply
ANT connector
(with protection cap)
PA5 – SCK (optional)
PA6 – MISO (optional)
PA6 – MOSI (optional)
PD14 – CSN (optional)
PD15 – Band Set1
PE9 – Band Set2
PF12 – RST
PE11 – CSN
PF13 – GPIO0
PF14 – GPIO1
PE13 – MISO
PF15 – GPIO2
PE12 – SCK
PE14 – MOSI
Table 1. P-NUCLEO-LRWAN2 gateway expansion board pins description
Pin name Pin description
VIN Power supply to NUCLEO-F746ZG from external 5 V
PF5/PD12/PC4/PB9 -GPIO4 GPIO4 from SX1301
PF10/PD13/PC5/PB8 -GPIO3 GPIO3 from SX1301
PF15-GPIO2 GPIO2 from SX1301
PF14-GPIO1 GPIO1 from SX1301
PF13-GPIO0 GPIO0 from SX1301
PE11-CSN CSN of SPI for SX1301
UM2587
Gateway hardware overview
UM2587 - Rev 3
page 8/55