Lyra 24 P20 DVK

Board Overview

Lyra 24 P20 DVK

Name:

lyra_24_dvk_p20

Vendor:

Ezurio

Architecture:

arm

SoC:

bgm240pb32vna

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Overview

The Lyra 24 P20 Development Kit provides support for the Ezurio Lyra 24 P20 Bluetooth Low Energy v5.4 module.

The module is based on the Silicon Laboratories BGM240PB32VNA module and includes an EFR32BG24 Arm Cortex-M33 CPU.

The Lyra 24 P20 module incorporates the QFN package EFR32BG24 (1024kB Flash, 256kB RAM). The part features up to 26 configurable GPIOs and BLE Radio TX Power up to 20dBm.

The kit features a USB interface, an on-board SEGGER J-Link debugger, one user-LED and button, and support for hardware add-on boards via a mikroBUS socket and a Qwiic connector.

Note

You can find more information about the Lyra 24 family of modules in the Lyra 24 product brief and on the Lyra 24 website.

You can find more information about the Lyra 24 P20 module in the Lyra 24 P datasheet.

You can find more information about the underlying BGM240PB32VNA module in the BGM240P datasheet.

You can find more information about the underlying EFR32BG24 SoC in the EFR32BG24 datasheet and EFR32BG24 reference manual.

Hardware

The Lyra 24 P20 DVK has two crystal oscillators as follows.

• High-frequency 39 MHz crystal oscillator (HFXO)

• Low-frequency 32.768 kHz crystal oscillator (LFXO)

The high-frequency crystal oscillator is fitted within the Lyra 24 P20 module.

The low-frequency crystal oscillator is fitted to the DVK and is external to the Lyra 24 P20 module.

The module supports an on-chip Bluetooth Low Energy antenna.

Full details of the DVK can be found in the Lyra 24 P DVK user guide and Lyra 24 P20 DVK schematics.

Supported Features

The lyra_24_dvk_p20 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.

lyra_24_dvk_p20/bgm240pb32vna target

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M33 CPU1	arm,cortex-m33
ADC	on-chip	Silicon Labs Series 2 IADC1	silabs,iadc
Bluetooth	on-chip	Silicon Labs Series 2 Bluetooth HCI1	silabs,bt-hci-efr32
Clock control	on-chip	Silicon Labs Series 2 CMU1	silabs,series-clock
	on-chip	Silicon Labs Series 2 HFRCODPLL1	silabs,series2-hfrcodpll
	on-chip	Generic fixed-rate clock provider3	fixed-clock
	on-chip	Silicon Labs Series 2 LFXO1	silabs,series2-lfxo
	on-chip	Silicon Labs Series 2 LFRCO1	silabs,series2-lfrco
	on-chip	Silicon Labs Series 2 HFRCOEM231	silabs,series2-hfrcoem23
	on-chip	Silicon Labs Series 2 HFXO1	silabs,hfxo
	on-chip	Generic fixed factor clock provider21	fixed-factor-clock
Comparator	on-chip	Silicon Labs Series 2 ACMP2	silabs,acmp
Cryptographic accelerator	on-chip	Silicon Labs Series 2 SE Mailbox1	silabs,gecko-semailbox
DAC	on-chip	Silicon Labs Series 2 VDAC 2	silabs,vdac
Debug	on-chip	Silicon Labs Packet Trace Interface1	silabs,pti
	on-chip	ARMv8 instrumentation trace macrocell1	arm,armv8m-itm
DMA	on-chip	Silicon Labs Series 2 LDMA1	silabs,ldma
Flash controller	on-chip	Silicon Labs Series 2 MSC1	silabs,series2-flash-controller
GPIO & Headers	on-chip	Silicon Labs Series 2 GPIO Peripheral1	silabs,gpio
	on-chip	Silicon Labs Series 2 GPIO Port4	silabs,gpio-port
	on-board	GPIO pins exposed on Mikro BUS headers1	mikro-bus
	on-board	STEMMA QT is a 4-pin JST-SH connector for I2C devices1	stemma-qt-connector
I2C	on-chip	Silabs I2C node11	silabs,i2c
Input	on-board	Group of GPIO-bound input keys1	gpio-keys
Interrupt controller	on-chip	ARMv8-M NVIC (Nested Vectored Interrupt Controller)1	arm,v8m-nvic
LED	on-board	Group of GPIO-controlled LEDs1	gpio-leds
	on-board	Group of PWM-controlled LEDs1	pwm-leds
MMU / MPU	on-chip	ARMv8-M MPU (Memory Protection Unit)1	arm,armv8m-mpu
MTD	on-chip	Flash node1	soc-nv-flash
	on-board	Fixed partitions of a flash (or other non-volatile storage) memory1	fixed-partitions
Networking	on-chip	Silicon Labs Series 2 Radio Interface1	silabs,series2-radio
Pin control	on-chip	Silicon Labs Series 2 DBUS Pin Controller1	silabs,dbus-pinctrl
PWM	on-chip	Silicon Labs TIMER PWM14	silabs,timer-pwm
	on-chip	Silicon Labs LETIMER PWM1	silabs,letimer-pwm
Regulator	on-chip	Silicon Labs Series 2 DC-DC converter1	silabs,series2-dcdc
Retained memory	on-chip	Silicon Labs Series 2 BURAM1	silabs,buram
RTC	on-chip	Silicon Labs Series 2 SYSRTC1	silabs,sysrtc
Serial controller	on-chip	Silicon Labs Series 2 USART1	silabs,usart-uart
	on-chip	Silicon Labs Series 2 EUSART 1	silabs,eusart-uart
SPI	on-chip	Silicon Labs Series 2 EUSART 1	silabs,eusart-spi
SRAM	on-chip	Generic on-chip SRAM1	mmio-sram
Timer	on-chip	ARMv8-M System Tick1	arm,armv8m-systick
	on-chip	Silicon Labs TIMER14	silabs,series2-timer
	on-chip	Silicon Labs Series 2 BURTC1	silabs,gecko-burtc
	on-chip	Silicon Labs LETIMER1	silabs,series2-letimer
Watchdog	on-chip	Silicon Labs Series 1-2 WDOG11	silabs,gecko-wdog

Connections and IOs

In the following table, the column Name contains Pin names. For example, PA2 means Pin number 2 on PORTA, as used in the board’s datasheets and manuals.

The Direction column indicates the pin direction from the module perspective, with I indicating Input, O Output, I/O for both and N/A where not applicable.

Name	Function	Usage	Direction
PA0	USART0_TX	UART Console VCOM_TX	O
PA1	SWD_SWCLK	JLink SWCLK	I
PA2	SWD_SWDIO	JLink SWDIO	I/O
PA3	SWD_SWO	JLink SWO	O
PA4	USART0_RTS	UART Console VCOM_RTS	O
PA5	USART0_CTS	UART Console VCOM_CTS	I
PA6	GPIO	Breakout Connector GPIO	I/O
PA7	USART0_RX	UART Console VCOM_RX	I
PA8	GPIO	LED 0	O
PB0	GPIO	mikroBUS AN	I
PB1	EUSART0_TX	mikroBUS TX	O
PB2	EUSART0_RX	mikroBUS RX	I
PB3	GPIO	mikroBUS INT	I
PB4	GPIO	mikroBUS PWM	O
PC0	PTI_FRAME	Packet Trace Interface FRAME	O
PC1	PTI_DATA	Packet Trace Interface DATA	O
PC2	EUSART1_SCK	mikroBUS SCK	O
PC3	GPIO	mikroBUS CS	O
PC4	EUSART1_TX	mikroBUS MOSI	O
PC5	EUSART1_RX	mikroBUS MISO	I
PC6	GPIO	mikroBUS RST	O
PC7	GPIO	Button 0	I
PD0	LFXO	LFXO	N/A
PD1	LFXO	LFXO	N/A
PD2	I2C0_SCL	mikroBUS SCL / Qwiic SCL	I/O
PD3	I2C0_SDA	mikroBUS SDA / Qwiic SDA	I/O

Note

Qwiic SCL is multipexed to the same I/O as MikroBUS SCL. MikroBUS I2C based boards can be used in conjunction with Qwiic boards by closing solder bridges SB5 and SB6.

Qwiic SDA is multipexed to the same I/O as MikroBUS SDA. MikroBUS I2C based boards can be used in conjunction with Qwiic boards by closing solder bridges SB9 and SB10.

Refer to the Lyra 24 P DVK user guide and Lyra 24 P20 DVK schematics for further details.

System Clock

The Lyra 24 P20 is configured to use the 39 MHz external oscillator on the board, and can operate at clock speeds of up to 78 MHz.

Serial Port

The Lyra 24 P20 has two EUSARTs and one USART.

• EUSART0 defaults to the mikroBUS UART.

• EUSART1 defaults to the mikroBUS SPI port.

• USART0 is connected to the board controller and is used for the console.

Programming and Debugging

Applications for the lyra_24_dvk_p20 board can be built, flashed, and debugged in the usual way. See Building an Application and Run an Application for more details on building and running.

Note

Before using the kit you should update the J-Link firmware in Simplicity Studio.

Testing the LED and button

The Blinky sample can be used to test the DVK LED.

The Button sample can be used to test the DVK button.

Bluetooth Low Energy

To use Bluetooth Low Energy 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 lyra_24_dvk_p20 samples/bluetooth/observer