OPOS8MMDev

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Description

This is the Armadeus System's standard development board/baseboard for the OPOS8MM module.

Resources

• Datasheet and schematics
• Product page on Armadeus Systems website

Feature list

Audio S/PDIF: audio in/out ALSA Video Out LCD BackLight FrameBuffer Video In Camera interface

User Input Touchscreen Wired communication UART SPI I2C USB Host USB_OTG USB_Gadget CAN bus 1-wire Storage MultiMediaCard

Wireless communication Wi-Fi usage on Linux Bluetooth usage on Linux Other ADC GPIOlib JTAG

Connectors

• RPi compatible connector:

Linux GPIO or device	i.MX8MM Mux config	OPOS8MM Pin Name	wiringPi N°	RPi name	Function	JX Pin	JX Pin	Function	RPi name	wiringPi N°	OPOS8MM Pin Name	i.MX8MM Mux config	Linux GPIO or device
-		+3V3			3.3V	1	2	5V			+5V		-
/dev/i2c-?		I2C4_SDA		SDA1	I2C data	3	4	5V			+5V		-
/dev/i2c-?		I2C4_SCL		SCL1	I2C clock	5	6	GND			GND		-
gpio?		GPIO1_14	7	GPIO7	GPIO / AIN9	7	8	UART Tx	TxD		UART1_TX		/dev/ttymxc?
		GND			GND	9	10	UART Rx	RxD		UART1_RX		/dev/ttymxc?
gpio?		GPIO1_4	0	GPIO0	GPIO	11	12	GPIO / AIN8	GPIO1		GPIO1_5		gpio?
gpio?		GPIO1_1		GPIO2	GPIO	13	14	GND		GND
gpio?		GPIO1_0		GPIO3	GPIO	15	16	GPIO	GPIO4	4	UART1_RTS		gpio?
		GND			3,3V	17	18	GPIO	GPIO5	5	UART1_CTS		gpio?
		SPI1_MOSI			SPI MOSI	19	20	GND	GND
		SPI1_MISO			SPI MISO	21	22	GPIO	GPIO6	6	GPIO1_7		gpio?
		SPI1_SCLK			SPI CLK	23	24	SPI_CS0			SPI1_SS0
		GND			GND	25	26	SPI_CS1			GPIO1_6
		Not Used			I2C Data	27	28	I2C clock			Not Used
gpio?		GPIO1_8			GPIO	29	30	GND			GND
		GPIO1_11			GPIO	31	32	GPIO			UART3_TXD	SNVS_TAMPER0__GPIO5_IO00	gpio?
gpio?		GPIO1_13			GPIO	33	34	GND			GND
gpio?		Not Used			GPIO	35	36	GPIO			UART3_RXD		gpio?
		Not Used			GPIO	37	38	GPIO			Not Used		gpio?
		GND			GND	39	40	GPIO / 1-Wire			Not Used		gpio?

Tested RPi shields/hats

• Dragino Lora/GPS HAT
• PiTinfoV1.2 HAT

Tips

Bootstrap

• Put Boot0 jumper to go in Bootstrap mode

U-Boot

• Use OPOS6ULDev "User" LED in U-Boot scripts:
  • ON:

     BIOS> gpio set 68 

  • OFF:

     BIOS> gpio clear 68 

Linux

• to activate login in Framebuffer console, please uncomment /etc/inittab line 35 this way:

# Set up a getty on LCD
tty1::respawn:/sbin/getty 38400 tty1

Links

• RaspberryPi is a registered trademark of RaspberryPi Foundation.