EK‐RA8D2 Sample and Demo Hardware configuration

Followings are hardware connection and test samples for EK_RA8D2.

• Note: Following test/samples are running on CM85 core only. CM33 support and Multicore support are in-progress.

How to build samples with CM85 core:

west build -p always -b ek_ra8d2/r7ka8d2kflcac/cm85 <path to test/sample>

For example:

west build -p always -b ek_ra8d2/r7ka8d2kflcac/cm85 samples/drivers/uart/echo_bot

Use Debug On-Board

Jumper	Configurations
J6	Jumper on pins 2-3
J8	Jumper on pins 1-2
J9	Jumper on pins 2-3
J29	Jumpers on pins 1-2, 3-4, 5-6, 7-8

Set the configuration switches (SW4) on the EK-RA8D2 board as below:

SW4-1 PMOD1	SW4-2 PMOD1	SW4-3 Octo-SPI (OFF is Active)	SW4-4 Arduino / mikroBUS	SW4-5 I2C/I3C	SW4-6 MIPI	SW4-7 USBFS	SW4-8 USBHS
OFF	OFF	OFF	OFF	OFF	OFF	OFF	OFF

Hardware connection for UART samples

echo_bot (samples/drivers/uart/echo_bot): No additional connection.

zTest (tests/drivers/uart/uart_basic_api): No additional connection.

zTest (tests/drivers/uart/uart_async_api): Loopback for TXD and RXD

Loopback for TXD and RXD

Board	Channel	Pin function	Pin
EK-RA8D2	SCI8	TXD8	PD02
		RXD8	PD03

Hardware connection for SPI samples

spi_bitbang (samples/drivers/spi_bitbang): Loopback for MISO and MOSI

• Note: The purpose of testing sample spi_bitbang on RA boards is to provide users with an understanding of the RA SPI driver. To test this sample using the SPI hardware IP, you can configure it by adding the overlay and configuration files with the following content:

  samples/drivers/spi_bitbang/boards/ek_ra8d2_r7ka8d2kflcac_cm85.conf

  CONFIG_STDOUT_CONSOLE=y
  CONFIG_SPI=y
  CONFIG_SPI_B_INTERRUPT=y
  CONFIG_SPI_B_RA_DTC=y
  CONFIG_LOG=y
  CONFIG_SPI_BITBANG=n
  

  • Note: We have to disable the CONFIG_SPI_BITBANG since we use SPI hardware IP to test spi_bitbang.

  samples/drivers/spi_bitbang/boards/ek_ra8d2_r7ka8d2kflcac_cm85.overlay

   spibb0: &spi1 {
  	rx-dtc;
  	tx-dtc;
  	pinctrl-0 = <&spi1_default>;
  	pinctrl-names = "default";
  	cs-gpios = <&ioport1 3 GPIO_ACTIVE_LOW>;
  	status = "okay";
  };
  
  &ioport1 {
  	status = "okay";
  };
  

zTest (tests/drivers/spi/spi_loopback): Loopback for MISO and MOSI

Loopback for MISO and MOSI

Board	Channel	Pin function	Pin
EK-RA8D2	SPI1	MISO1	P100
		MOSI1	P101

Hardware connection for I2C sample

zTest (tests/drivers/i2c/i2c_api): Require GY-271 QMC5883L module

• With IIC:

  Connections:

  GY271	EK-RA8D2
  VCC	P3V3
  GND	GND
  SCL	P512 (SCL1)
  SDA	P511 (SDA1)
  DDBY	-

• With SCI I2C: Require "-DDTC_OVERLAY_FILE" and "-DCONF_FILE" to use SCI I2C in build command:

  Connections:

  GY271	EK-RA8D2
  VCC	P3V3
  GND	GND
  SCL	P602 (SCL0)
  SDA	P603 (SDA0)
  DDBY	-

  CM85:

  west build -p always -b ek_ra8d2/r7ka8d2kflcac/cm85 tests/drivers/i2c/i2c_api -DDTC_OVERLAY_FILE=boards/ek_ra8d2_r7ka8d2kflcac_cm85_sci_b_i2c.overlay -DCONF_FILE="boards/ek_ra8d2_r7ka8d2kflcac_cm85_sci_b_i2c.conf"
  

Hardware connection for can samples

zTest (tests/drivers/can/api): No additional connection.

zTest (tests/drivers/can/timing): No additional connection.

Hardware connection for PWM (GPT) samples

zTest (tests/drivers/pwm/pwm_api): No additional connection.

zTest (tests/drivers/pwm/pwm_loopback): Loopback 2 channels (1 PWM output, 1 PMW capture)

Board	Channel	Pin	Pin function	Remark
EK-RA8D2	PWM1	P105	GTIOC1A	PWM output
	PWM10	P810	GTIOC10A	PWM capture

Hardware connection for Counter (AGT) samples

Counter Alarm (samples/drivers/counter/alarm): No additional connection.

Hardware connection for Display samples

Connect the Parallel Graphics Expansion Board 1 (included in the kit) to J1 of EK-RA8D2.

LVGL demos (samples/modules/lvgl/demos): Require information of display shield in build command:

• CM85:

  west build -b ek_ra8d2/r7ka8d2kflcac/cm85 samples/modules/lvgl/demos/ -T sample.modules.lvgl.demos.rtklcdpar1s00001be -p
  

Hardware connection for ULPT tests

ztest (tests/kernel/timer/timer_api): Require "-DCONFIG_RENESAS_RA_ULPT_TIMER=y" in build command:

• CM85:

  west build -b ek_ra8d2/r7ka8d2kflcac/cm85 tests/kernel/timer/timer_api -p -DCONFIG_RENESAS_RA_ULPT_TIMER=y
  

ztest (tests/kernel/timer/timer_behavior): Require "-DCONFIG_RENESAS_RA_ULPT_TIMER=y" in build command:

• CM85:

  west build -b ek_ra8d2/r7ka8d2kflcac/cm85 tests/kernel/timer/timer_behavior -p -DCONFIG_RENESAS_RA_ULPT_TIMER=y
  

ztest (tests/kernel/timer/timer_timepoints): Require "-DCONFIG_RENESAS_RA_ULPT_TIMER=y" in build command:

• CM85:

  west build -b ek_ra8d2/r7ka8d2kflcac/cm85 tests/kernel/timer/timer_timepoints -p -DCONFIG_RENESAS_RA_ULPT_TIMER=y
  

ztest (tests/kernel/timer/timer_error_case): Require "-DCONFIG_RENESAS_RA_ULPT_TIMER=y" in build command:

• CM85:

  west build -b ek_ra8d2/r7ka8d2kflcac/cm85 tests/kernel/timer/timer_error_case -p -DCONFIG_RENESAS_RA_ULPT_TIMER=y
  

ztest (tests/kernel/timer/timer_monotonic): Require "-DCONFIG_RENESAS_RA_ULPT_TIMER=y" in build command:

• CM85:

  west build -b ek_ra8d2/r7ka8d2kflcac/cm85 tests/kernel/timer/timer_monotonic -p -DCONFIG_RENESAS_RA_ULPT_TIMER=y
  

Hardware connection for LPM test

ztest (tests/subsys/pm/power_mgmt_soc): No additional connection.

Hardware connection for comparator (ACMPHS) test and sample

ztest (tests/drivers/comparator/gpio_loopback): Loopback GPIO pin with Analog voltage input pin for comparator (IVCMPn)

Board	Channel	Pin function	Pin
EK-RA8D2	IPORT0	GPIO	P014
	ACMPHS0	IVCMP0	P015