EFR32BG27 2.4 GHz 4 dBm DCDC Buck CSP (BG27-RB4110B)
Overview
The EFR32BG27 +4 dBm Radio Board (BG27-RB4110B) in CSP package is a plug-in board for the Wireless Starter Kit Mainboard (BRD4001A) and the Wireless Pro Kit Mainboard (BRD4002A). It is a complete reference design for the EFR32BG27 Wireless SoC, with matching network and a PCB antenna for 4 dBm output power in the 2.4 GHz band.
See Radio Boards for more information about the Wireless Mainboard platform.
Hardware
EFR32BG27C320F768GJ39 SoC
CPU core: ARM Cortex®-M33 with FPU, DSP and TrustZone
Memory: 768 kB Flash, 64 kB RAM
Transmit power: up to +4 dBm
Operation frequency: 2.4 GHz
Crystals for LFXO (32.768 kHz) and HFXO (38.4 MHz)
8 Mbit SPI NOR Flash
For more information about the EFR32BG27 SoC and BRD4110B board, refer to these documents:
Supported Features
The bg27_rb4110b
board supports the hardware features listed below.
- on-chip / on-board
- Feature integrated in the SoC / present on the board.
- 2 / 2
-
Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files. -
vnd,foo
-
Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.
bg27_rb4110b/efr32bg27c320f768gj39
target
Type |
Location |
Description |
Compatible |
---|---|---|---|
CPU |
on-chip |
ARM Cortex-M33 CPU1 |
|
ADC |
on-chip |
Silicon Labs Series 2 IADC1 |
|
Bluetooth |
on-chip |
Silicon Labs Series 2 Bluetooth HCI1 |
|
Clock control |
on-chip |
Silicon Labs Series 2 CMU1 |
|
on-chip |
Silicon Labs Series 2 HFXO1 |
||
on-chip |
Silicon Labs Series 2 HFRCODPLL1 |
||
on-chip |
Generic fixed-rate clock provider3 |
||
on-chip |
Silicon Labs Series 2 LFXO1 |
||
on-chip |
Silicon Labs Series 2 LFRCO1 |
||
on-chip |
Generic fixed factor clock provider18 |
||
Comparator |
on-chip |
Silicon Labs Series 2 ACMP1 |
|
Debug |
on-chip |
Silicon Labs Packet Trace Interface1 |
|
on-chip |
ARMv8 instrumentation trace macrocell1 |
||
DMA |
on-chip |
Silicon Labs Series 2 LDMA1 |
|
Flash controller |
on-chip |
Silicon Labs Series 2 MSC1 |
|
GPIO & Headers |
on-chip |
Silicon Labs Series 2 GPIO Peripheral1 |
|
on-chip |
Silicon Labs Series 2 GPIO Port4 |
||
on-board |
Silicon Labs Kit Expansion Header1 |
||
I2C |
on-chip |
Silabs I2C node2 |
|
Input |
on-board |
Group of GPIO-bound input keys1 |
|
Interrupt controller |
on-chip |
ARMv8-M NVIC (Nested Vectored Interrupt Controller)1 |
|
LED |
on-board |
Group of GPIO-controlled LEDs1 |
|
on-board |
Group of PWM-controlled LEDs1 |
||
MMU / MPU |
on-chip |
ARMv8-M MPU (Memory Protection Unit)1 |
|
MTD |
on-chip |
Flash node1 |
|
on-board |
Fixed partitions of a flash (or other non-volatile storage) memory1 |
||
on-board |
Properties supporting Zephyr spi-nor flash driver (over the Zephyr SPI API) control of serial flash memories using the standard M25P80-based command set1 |
||
Networking |
on-chip |
Silicon Labs Series 2 Radio Interface1 |
|
Pin control |
on-chip |
Silicon Labs Series 2 DBUS Pin Controller1 |
|
PWM |
on-chip |
Silicon Labs TIMER PWM5 |
|
on-chip |
Silicon Labs LETIMER PWM1 |
||
Regulator |
on-chip |
Silicon Labs Series 2 DC-DC converter1 |
|
RNG |
on-chip |
GECKO TRNG (True Random Number Generator)1 |
|
RTC |
on-chip |
Silicon Labs Series 2 Sleeptimer1 |
|
Serial controller |
on-chip |
Silicon Labs Series 2 USART1 |
|
SPI |
on-chip |
Silicon Labs Series 2 USART1 |
|
on-chip |
Silicon Labs Series 2 EUSART 1 |
||
SRAM |
on-chip |
Generic on-chip SRAM1 |
|
Timer |
on-chip |
ARMv8-M System Tick1 |
|
on-chip |
Silicon Labs TIMER5 |
||
on-chip |
Silicon Labs Series 2 BURTC1 |
||
on-chip |
Silicon Labs LETIMER1 |
||
Watchdog |
on-chip |
Silicon Labs Series 1-2 WDOG1 |
System Clock
The EFR32BG27 SoC is configured to use the HFRCODPLL oscillator at 76.8 MHz as the system clock, locked to the 38.4 MHz external crystal oscillator on the board.
Serial Port
The EFR32BG27 SoC has two USARTs and one EUSART. USART1 is connected to the board controller and is used for the console.
Programming and Debugging
The bg27_rb4110b
board supports the runners and associated west commands listed below.
flash | debug | attach | rtt | debugserver | |
---|---|---|---|---|---|
jlink | ✅ (default) | ✅ (default) | ✅ | ✅ | ✅ |
silabs_commander | ✅ |
Connect the BRD4002A mainboard with a mounted BRD4110B radio board to your host computer using the USB port.
Here is an example for the Hello World application.
# From the root of the zephyr repository
west build -b bg27_rb4110b samples/hello_world
west flash
Open a serial terminal (minicom, putty, etc.) with the following settings:
Speed: 115200
Data: 8 bits
Parity: None
Stop bits: 1
Reset the board and you should see the following message in the terminal:
Hello World! bg27_rb4110b
Bluetooth
To use Bluetooth functionality, run the command below to retrieve necessary binary blobs from the Silicon Labs HAL repository.
west blobs fetch hal_silabs
Then build the Zephyr kernel and a Bluetooth sample with the following command. The Observer sample application is used in this example.
# From the root of the zephyr repository
west build -b bg27_rb4110b samples/bluetooth/observer