EK‐RX261 Sample Configuration

Followings are hardware connection for EK-RX261, for more detail, please visit EK-RX261 - Quick Start Guide and EK-RX261 - User's Manual

Default HW configuration:

Zephyr UART Console setting: EK-RX261 board includes an onboard USB-to-UART interface, allowing direct console communication with the PC without requiring an external USB UART board.

The onboard USB-to-UART interface is connected to the PC via the J16 connector on the EK-RX261 board.

The EK-RX261 board features an onboard E2 OB debugger, connected via the J26 (USB DEBUG1) port using a Micro USB cable. This enables firmware programming and debugging directly from a host PC. Additionally, a 14-pin FINE debug header (J27) is available for external debugging tools.

Hardware connection for UART samples

• echo_bot (samples/drivers/uart/echo_bot):

  • Hardware configuration: No additional connection.

  • Build command:

    west build -b ek_rx261 samples/drivers/uart/echo_bot/
    

• zTest uart_basic_api (tests/drivers/uart/uart_basic_api):

  • Hardware configuration: No additional connection.

  • Build command:

    west build -b ek_rx261 tests/drivers/uart/uart_basic_api/
    

Hardware connection for SPI samples

• zTest spi_loopback (tests/drivers/spi/spi_loopback)

  • Hardware configuration: Loopback for MISO and MOSI

    Board	Channel	Pin function	Pin
    EK-RX261	RSPIc	MISO	PA7
    		MOSI	PA6

  • Build command:

    west build -b ek_rx261 -p always tests/drivers/spi/spi_loopback
    

Hardware connection for I2C sample

• zTest i2c_api (tests/drivers/i2c/i2c_api):

  • Hardware configuration: Require GY-271 QMC5883L module

  Pin configuration:

  Board	Channel	Pin function	Pin	Connect to GY-271 QMC5883L module
  EK-RA6M3	RIIC0	SCL0	P12 (PMOD1-3)	SCL
  		SDA0	P13 (PMOD1-4)	SDA
  		P3V3	P3V3	VCC
  		GND	GND	GND
  		-	-	DDBY

  Jumper configuration:

  J31: Short 2-3

  J32: Short 2-3

  • Build command:

    west build -b ek_rx261 -p always tests/drivers/i2c/i2c_api
    

Hardware connection for Flash samples

• zTest flash common (tests/drivers/flash/common): No additional connection.

  • Hardware configuration: No additional connection.

  • Build command:

    west build -p always -b ek_rx261 tests/drivers/flash/common
    

Hardware connection for Watchdog samples

• zTest wdt_basic_api (tests/drivers/watchdog/wdt_basic_api):

  • HW configuration: No additional connection.

  • Build command:

    west build -b ek_rx261 -p always tests/drivers/watchdog/wdt_basic_api
    

• zTest wdt_basic_reset_none (tests/drivers/watchdog/wdt_basic_reset_none):

  • HW configuration: No additional connection.

  • Build command:

    west build -b ek_rx261 -p always tests/drivers/watchdog/wdt_basic_reset_none
    

Hardware connection for ADC samples

• zTest adc_api (tests/drivers/adc/adc_api): No additional connection.

  • Hardware configuration: No additional connection.

  • Build command:

    west build -p always -b ek_rx261 tests/drivers/adc/adc_api
    

• zTest adc_accuracy_test (tests/drivers/adc/adc_accuracy_test):

  • Hardware configuration: Loopback 3V3 and AN000 (P40).

    Board	Channel	Board Pin function	Board Pin	Connect to
    EK-RX261	S12AD	AN000	P40 (J9 - 1)	3V3
    		3V3	P3V3 (J7 - 4)	AN000

  • Build command:

    west build -p always -b ek_rx261 tests/drivers/adc/adc_accuracy_test
    

Hardware connection for LVD samples

• Samples renesas/lvd (samples/boards/renesas/lvd):

  • Hardware configuration: Connect the voltage source to the CMPA2 pin.

    Board	Channel	Board Pin function	Board Pin	Connect to
    EK-RX261	LVD2	CMPA2	PE4 (J3 - 24)	Voltage source

  • Build command:

    west build -p always -b ek_rx261 samples/boards/renesas/lvd