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
-					3.3V	1	2	5V					-
/dev/i2c-?				SDA1	I2C data	3	4	5V					-
/dev/i2c-?				SCL1	I2C clock	5	6	GND					-
gpio?			7	GPIO7	GPIO / AIN9	7	8	UART Tx	TxD				/dev/ttymxc?
					GND	9	10	UART Rx	RxD				/dev/ttymxc?
gpio?			0	GPIO0	GPIO	11	12	GPIO / AIN8	GPIO1				gpio?
gpio?				GPIO2	GPIO	13	14	GND
gpio?				GPIO3	GPIO	15	16	GPIO	GPIO4	4			gpio?
					3,3V	17	18	GPIO	GPIO5	5			gpio?
					SPI MOSI	19	20	GND
					SPI MISO	21	22	GPIO	GPIO6	6			gpio?
					SPI CLK	23	24	SPI_CS0
					GND	25	26	SPI_CS1
					I2C Data	27	28	I2C clock
gpio?					GPIO	29	30	GND
					GPIO	31	32	GPIO				SNVS_TAMPER0__GPIO5_IO00	gpio?
gpio?					GPIO	33	34	GND
gpio?					GPIO	35	36	GPIO					gpio?
					GPIO	37	38	GPIO					gpio?
					GND	39	40	GPIO / 1-Wire					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.