EK_RA8M1 Hardware connection - renesas/zephyr GitHub Wiki

Followings are hardware connection for EK_RA8M1, for more detail, please visit EK-RA8M1 - Quick Start Guide and EK-RA8M1 v1 - User's Manual

Use Debug On-Board

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

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-RA8M1	SCI2	TXD2	PA03
		RXD2	PA02

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_ra8m1.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_ra8m1.overlay

  spibb0: &spi1 {
  	rx-dtc;
  	tx-dtc;
  	cs-gpios = <&ioport4 13 GPIO_ACTIVE_LOW>;
  	status = "okay";
  };
  
  &ioport4 {
  	status = "okay";
  };
  

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

Loopback for MISO and MOSI

Board	Channel	Pin function	Pin
EK-RA8M1	SPI1	MISO1	P410
		MOSI1	P411

Hardware connection for I2C sample

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

Connections:

GY271	EK-RA8M1
VCC	P3V3
GND	GND
SCL	P512 (SCL1)
SDA	P511 (SDA1)
DDBY	-

Hardware connection for DHCPv4 client samples

Remove jumper J61 to enable Ethernet B

Jumper	Configurations
J61	Open