RA4E1 Voice User Reference Kit
Overview
VOICE-RA4E1 is an edge voice recognition evaluation kit designed to be used by Ecosystem Partners, Application Engineers, Field Application Engineers, and for Business Development opportunities. The primary purpose is to evaluate the functionality of projects developed by Ecosystem Partners, and to facilitate the development of additional partner projects. The kit design to use the RA4E1 MCU with QFN 48pin package as the core logic device, with QSPI flash, OPAMP and power devices chosen from the Renesas product portfolio.
The MCU in this series incorporates a high-performance Arm Cortex®-M33 core running up to 100 MHz with the following features:
MCU Native Pin Access
R7FA4E10D2CNE MCU (referred to as RA MCU)
100 MHz, Arm® Cortex®-M33 core
512 KB Code Flash, 8 KB Data Flash, 128 KB SRAM
48 pins, LQFP package
MCU current measurement point for precision current consumption measurement
Multiple clock sources - Low-precision (~1%) clocks are available internal to the RA MCU.
Kit Peripheral Features
Following is a list of the specific features that have been implemented:
QSPI: One QSPI flash memory device, Dialog AT25SF641B-MHB-T, 64M-bit (8MB).
PMOD: 1 Digilent PMOD connectors, supporting UART, SPI and I2C configurations.
Microphones: 1 I2S MEMS digital microphones and 2 MEMS analog microphones, distance between each pair of microphones is 50mm which is suitable for beamforming applications.
Audio out: One stereo audio headphone jack supporting mono output on both channels.
LEDs: Five LEDs, D2 (Red), D3 (Green) and D4 (Blue) configurable by user, D5 (Blue) as a 3.3V power indicator, D8(Green) as a JLOB (J-LINK on board) indicator.
Buttons: One RESET button (S2), and one USER button (S1).
Debug: J-Link On-Board debug interface, supporting JTAG or SWD debug port.
USB: Micro USB-B (J6) for power input and J-Link On-Board function, USB-C (J1) for power input and RA4E1 USB Full Speed port as a USB device.
Form Factor: 7.5 x 6 cm
Hardware
Detailed hardware features can be found at:
RA4E1 MCU: RA4E1 Group User’s Manual Hardware
VOICE-RA4E1 board: VOICE-RA4E1 - Engineering Manual
Supported Features
The voice_ra4e1 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.
voice_ra4e1/r7fa4e10d2cne target
Type |
Location |
Description |
Compatible |
|---|---|---|---|
CPU |
on-chip |
ARM Cortex-M33 CPU1 |
|
ADC |
on-chip |
Renesas RA ADC node1 |
|
Clock control |
on-chip |
Renesas RA Clock Generation Circuit external clock configuration1 |
|
on-chip |
Generic fixed-rate clock provider3 |
||
on-chip |
Renesas RA Sub-Clock1 |
||
on-chip |
Renesas RA Clock Generation Circuit PLL Clock2 |
||
on-chip |
Renesas RA Clock Control node pclk block1 |
||
on-chip |
|||
Counter |
on-chip |
Renesas RA AGT as Counter5 |
|
DAC |
on-chip |
Renesas RA DAC Controller Global1 |
|
on-chip |
Renesas RA DAC Controller1 |
||
Flash controller |
on-chip |
Renesas RA family flash high-performance controller1 |
|
GPIO & Headers |
on-chip |
||
I2C |
on-chip |
Renesas RA I2C Master controller1 |
|
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 |
|
Miscellaneous |
on-chip |
||
on-chip |
Renesas RA AGT5 |
||
on-chip |
|||
MMU / MPU |
on-chip |
ARMv8-M MPU (Memory Protection Unit)1 |
|
MTD |
on-chip |
Flash memory binding of Renesas RA family2 |
|
on-board |
Fixed partitions of a flash (or other non-volatile storage) memory1 |
||
PHY |
on-chip |
This binding is to be used by all the usb transceivers which are built-in with USB IP1 |
|
Pin control |
on-chip |
The Renesas RA pin controller is a node responsible for controlling pin function selection and pin properties, such as routing a SCI0 RXD to P6101 |
|
PWM |
on-chip |
Renesas RA Pulse Width Modulation4 |
|
RNG |
on-chip |
Renesas RA SCE9 TRNG1 |
|
Serial controller |
on-chip |
||
SPI |
on-chip |
Renesas RA SPI controller1 |
|
SRAM |
on-chip |
Generic on-chip SRAM description1 |
|
Timer |
on-chip |
ARMv8-M System Tick1 |
|
USB |
on-chip |
Renesas RA USB full-speed controller1 |
|
on-chip |
Renesas RA USB device controller1 |
||
Watchdog |
on-chip |
Renesas RA Watchdog (wdt)1 |
Programming and Debugging
Applications for the voice_ra4e1 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.
Flashing
Program can be flashed to VOICE-RA4E1 via the on-board SEGGER J-Link debugger. SEGGER J-link’s drivers are available at https://www.segger.com/downloads/jlink/
To flash the program to board
Connect to J-Link OB via USB port to host PC
Make sure J-Link OB jumper is in default configuration as describe in VOICE-RA4E1 - Engineering Manual
Execute west command
west flash -r jlink
Debugging
You can use Segger Ozone (Segger Ozone Download) for a visual debug interface
Once downloaded and installed, open Segger Ozone and configure the debug project like so:
Target Device: R7FA4E10D
Target Interface: SWD
Target Interface Speed: 4 MHz
Host Interface: USB
Program File: <path/to/your/build/zephyr.elf>
Note: It’s verified that we can debug OK on Segger Ozone v3.30d so please use this or later version of Segger Ozone