EFR32BG29 Bluetooth LE 4 dBm DCDC Boost WLCSP (BG29-RB4420A)
Overview
The EFR32BG29 Bluetooth LE +4 dBm DCDC Boost WLCSP Radio Board 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 DCDC Boost mode EFR32xG29 Wireless SoC, a matching network and a PCB antenna for 4 dBm output power in the 2.4 GHz band. The EFR32 on the radio board is powered in boost DC-DC configuration from an on-board LDO for improved efficiency and to demonstrate single-cell operation. See Radio Boards for more information about the Wireless Mainboard platform.
Hardware
EFR32BG29B220F1024CJ45 SoC
CPU core: ARM Cortex®-M33 with FPU, DSP and TrustZone
Memory: 1024 kB Flash, 256 kB RAM
Transmit power: up to +4 dBm
Operation frequency: 2.4 GHz
Crystals for LFXO (32.768 kHz) and HFXO (38.4 MHz)
For more information about the EFR32BG29 SoC and BRD4420A board, refer to these documents:
Supported Features
The bg29_rb4420a
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.
bg29_rb4420a/efr32bg29b220f1024cj45
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 |
|
Cryptographic accelerator |
on-chip |
Silicon Labs Series 2 SE Mailbox1 |
|
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 |
||
I2C |
on-chip |
Silicon Labs Series 0-2 I2C2 |
|
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 |
||
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 |
|
RTC |
on-chip |
Silicon Labs Series 2 Sleeptimer1 |
|
Serial controller |
on-chip |
||
SPI |
on-chip |
||
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 EFR32BG29 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 EFR32BG29 SoC has two USARTs and two EUSARTs. USART1 is connected to the board controller and is used for the console.
Programming and Debugging
The bg29_rb4420a
board supports the runners and associated west commands listed below.
flash | debug | debugserver | attach | rtt | |
---|---|---|---|---|---|
jlink | ✅ (default) | ✅ (default) | ✅ | ✅ | ✅ |
silabs_commander | ✅ |
Connect the BRD4002A mainboard with a mounted BRD4420A 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 bg29_rb4420a 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! bg29_rb4420a
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 bg29_rb4420a samples/bluetooth/observer