EK‐RA4M2 Sample and Demo hardware configuration

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

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).

    

  • 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