Capacitive Touch Evaluation System for RA2L1

Board Overview

Capacitive Touch Evaluation System for RA2L1

Name:

rssk_ra2l1

Vendor:

Renesas Electronics Corporation

Architecture:

arm

SoC:

r7fa2l1abxxfp

Browse board sources

Overview

The RA2L1 MCU Group Capacitive Touch Evaluation System (RTK0EG0022S01001BJ) is a kit created for evaluating the RA2L1 MCU Group Capacitive Touch Sensing Unit (CTSU).

RTK0EG0022S01001BJ is composed of two boards: The RA2L1 Cap Touch CPU Board is mounted with an RA2L1 MCU which includes an on-chip CTSU. The Capacitive Touch Application Board Capacitive Touch Application Board is equipped with self-capacitance touch buttons, wheel and slider electrodes, and LEDs touch electrodes.

Renesas RA2L1 Microcontroller Group has following features

• 48MHz, Arm Cortex-M23 core

• 256kB or 128kB Code Flash, 8kB Data Flash, 32kB SRAM (divided on 2 equal areas with- and without- ECC support)

• SCI x 5

• SPI x 2

• I2C x 2

• CAN x 1

• 12-bit A/D Converter

• 12-bit D/A Converter

• Low-Power Analog Comparator x 2

• Temperature Sensor

• General PWM Timer 32-bit x 4

• General PWM Timer 16-bit x 6

• Low Power Asynchronous General-Purpose Timer x 2

• Watchdog Timer (WDT)

• Independent Watchdog Timer (IWDT)

• Up to 85 Input/Output pins (depends on the package type)

Hardware

The main functions of the RA2L1 Cap Touch CPU board are as follows:

• Renesas RA2L1 MCU Group

  • R7FA2L1AB2DFP

  • 100-pin LFQFP package

  • 48MHz Arm Cortex®-M23 Core with built-in Arm® MPU (Armv8-M architecture)

  • 32KB SRAM

  • 256KB code flash memory

  • 8KB data flash memory

  • 32-channel capacitive touch sensing unit (CTSU) pins

• Connectivity

  • USB serial conversion interface (FT234XD manufactured by FTDI)

  • 10-pin JTAG/SWD interface for connecting external debugger or programmer (option)

  • Application board GPIO interface: 2.54mm pitch, 16 pins (8 x 2 DIL)

  • Application board CTSU interface: 2.54mm pitch, 40 pins (20 x 2 DIL)

• Other functions

  • MCU current measurement jumper

  • User push button switches: 2

  • User LEDs: 2

RA2L1 Cap Touch CPU Board (Credit: Renesas Electronics Corporation)

Key functions of the Capacitive Touch Application Board are as follows:

• Self-capacitance detection touch electrodes

  • Buttons: 3

  • Wheel (4-electrode configuration): 1

  • Slider (5-electrode configuration): 1

• LEDs: 16

Supported Features

The rssk_ra2l1 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.

rssk_ra2l1/r7fa2l1abxxfp target

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M23 CPU1	arm,cortex-m23
ADC	on-chip	Renesas RA ADC node1	renesas,ra-adc
Clock control	on-chip	Renesas RA Clock Generation Circuit external clock configuration1	renesas,ra-cgc-external-clock
	on-chip	Generic fixed-rate clock provider3	fixed-clock
	on-chip	Renesas RA Sub-Clock1	renesas,ra-cgc-subclk
	on-chip	Renesas RA Clock Control node pclk block1	renesas,ra-cgc-pclk-block
	on-chip	Renesas RA Clock Control Peripheral Clock3 1	renesas,ra-cgc-pclk
Counter	on-chip	Renesas RA AGT as Counter2	renesas,ra-agt-counter
DAC	on-chip	Renesas RA DAC Controller Global1	renesas,ra-dac-global
	on-chip	Renesas RA DAC Controller1	renesas,ra-dac
GPIO & Headers	on-chip	Renesas RA GPIO I/O Port2 7	renesas,ra-gpio-ioport
I2C	on-chip	Renesas RA I2C Master controller2	renesas,ra-iic
Input	on-chip	Renesas RA Capacitive Sensing Unit1	renesas,ra-ctsu
	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
Miscellaneous	on-chip	Renesas RA Event Link Controller1	renesas,ra-elc
	on-chip	Renesas RA SCI controller1 4	renesas,ra-sci
	on-chip	Renesas RA AGT2	renesas,ra-agt
	on-chip	Renesas RA External Interrupt2 6	renesas,ra-external-interrupt
MMU / MPU	on-chip	ARMv8-M MPU (Memory Protection Unit)1	arm,armv8m-mpu
MTD	on-chip	Flash node2	soc-nv-flash
Pin control	on-chip	Renesas RA Pin Controller1	renesas,ra-pinctrl-pfs
PWM	on-chip	Renesas RA Pulse Width Modulation10	renesas,ra-pwm
Reserved memory	on-chip	Renesas Option-Setting Memory4	renesas,ofs-memory
RNG	on-chip	Renesas RA TRNG1	renesas,ra-trng
Serial controller	on-chip	Renesas RA SCI UART controller1 4	renesas,ra-sci-uart
SPI	on-chip	Renesas RA SPI controller2	renesas,ra-spi
SRAM	on-chip	Generic on-chip SRAM1	mmio-sram
Timer	on-chip	ARMv8-M System Tick1	arm,armv8m-systick
Watchdog	on-chip	Renesas RA Watchdog (wdt)1	renesas,ra-wdt

Programming and debugging

Building & Flashing

You can build and flash an application with an external J-Link debug adapter connect to J1 connector. Building an Application and Run an Application for more details.

Here is an example for building and flashing the Blinky application.

# From the root of the zephyr repository
west build -b rssk_ra2l1 samples/basic/blinky
west flash

Debugging

Debugging also can be done with an external J-Link debug adapter connected to J1 connector. For the debug log output through UART console, you need to connect a USB cable from the host PC to the USB Serial Conversion on CN5. The following command is debugging the Blinky application. Also, see the instructions specific to the debug server that you use.

# From the root of the zephyr repository
west build -b rssk_ra2l1 samples/basic/blinky
west debug

Or 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: R7FA2L1AB

• Target Interface: SWD

• Target Interface Speed: 4 MHz

• Host Interface: USB

• Program File: <path/to/your/build/zephyr.elf>

References

• RSSK-RA2L1 Web site

• RA2L1 MCU Group Website