EK‐RA4M2 Sample and Demo hardware configuration - renesas/zephyr GitHub Wiki

Followings are hardware connection and test samples for EK-RA4M2, for more detail on 1st setup hardware connection, please visit EK-RA4M2 - Quick Start Guide and EK-RA4M2 v1 - User's Manual

Default HW configuration:

Zephyr UART Console setting: EK-RA4M2 board require to connect with a USB UART board to communicate with PC console

e.g. PMOD USB UART

Pin configuration:

Board Channel Board Pin function Board Pin Connect to PMOD 2
EK-RA4M2 SCI0 TXD0 P411 (PMOD 2-2) USB UART RXD pin
RXD0 P410 (PMOD 2-3) USB UART TXD pin
GND GND USB UART GND pin
P3.3V VCC USB UART VCC pin

image

Hardware connection for UART samples

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

    • Hardware configuration: No additional connection.

    • Build command:

      west build -p always -b ek_ra4m2 samples/drivers/uart/echo_bot/

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

    • Hardware configuration: No additional connection.

    • Build command:

      west build -p always -b ek_ra4m2 tests/drivers/uart/uart_basic_api/

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

    • Hardware configuration: Loopback for TXD and RXD

      Board Channel Pin function Pin Connect to
      EK-RA4M2 SCI2 TXD2 P112 Loopback to RXD2 pin
      RXD2 P113 Loopback to RXD2 pin

    • Build command:

      west build -p always -b ek_ra4m2 tests/drivers/uart/uart_async_api/

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_ra4m2.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_ra4m2.overlay

     spibb0: &spi0 {
   		rx-dtc;
   		tx-dtc;
   		pinctrl-0 = <&spi0_default>;
   		pinctrl-names = "default";
   		cs-gpios = <&ioport4 13 GPIO_ACTIVE_LOW>; // dummy config
   		status = "okay";
   	};

 &ioport4 {
   		status = "okay";
 };

    • Hardware configuration:

      Board Channel Pin function Pin Connect to
      EK-RA4M2 SPI0 MISOA P110 Loopback to MOSIA
      MOSIA P109 Loopback to MISOA

    • Build command:

      west build -p always -b ek_ra4m2 samples/drivers/spi_bitbang

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

    • Hardware configuration: Loopback for MISO and MOSI

      Board Channel Pin function Pin Connect to
      EK-RA4M2 SPI0 MISOA P110 Loopback to MOSIA
      MOSIA P109 Loopback to MISOA

    • Build command:

      west build -p always -b ek_ra4m2 samples/drivers/spi_bitbang

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_ra4m2 tests/drivers/flash/common

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_ra4m2 tests/drivers/adc/adc_api

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

    • Hardware configuration: Loopback 3V3 and AN000 (P000).

      ADC_HW_Connection

    • Build command:

      west build -p always -b ek_ra4m2 tests/drivers/adc/adc_accuracy_test

Hardware connection for PWM (GPT) samples

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

    • Hardware configuration: No additional connection.

    • Build command:

      west build -p always -b ek_ra4m2 tests/drivers/pwm/pwm_api

  • zTest pwm_loopback (tests/drivers/pwm/pwm_loopback):

    • Hardware configuration: Loopback 2 channels (1 PWM output, 1 PMW capture)

      Board Channel Pin Pin function Remark
      EK-RA4M2 PWM1 P105 GTIOC1A PWM output, loopback to PWM capture pin
      PWM4 P302 GTIOC4A PWM capture, loopback to PWM output pin

    • Build command:

      west build -p always -b ek_ra4m2 tests/drivers/pwm/pwm_loopback

Hardware connection for Counter (AGT) samples

  • Counter Alarm sample (samples/drivers/counter/alarm):

    • Hardware configuration: No additional connection.

    • Build command:

      west build -p always -b ek_ra4m2 samples/drivers/counter/alarm`

Hardware connection for DAC samples

  • ztest dac_api (tests/drivers/dac/dac_api):

    • Hardware configuration: No additional connection.
    • Build command: west build -p always -b ek_ra4m2 tests/drivers/dac/dac_api

  • DAC sample (samples/drivers/dac):

    • Hardware configuration: No additional connection.
    • Build command: west build -p always -b ek_ra4m2 samples/drivers/dac