EK‐RX261 Sample Configuration - renesas/zephyr GitHub Wiki

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.

EK_RX261

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/

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

    • Hardware configuration: Loopback for TXD12 and RXD12

      Board Channel Pin function Pin
      EK-RX261 12 TX PE1
      RX PE2

    • 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):

    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