Datasheet

Step 4. Af ter w riting the image to the SD card, insert the SD card in your ReSpeaker Core V2. Pow er the board using the PWR_IN micro usb port and DO NOT
remove the SD card after pow ering on. ReSpeaker Core V2 w ill boot from the SD card, and you can see USER1 and USER2 LEDs light up. USER1 is typically
configured at boot to blink in a heartbeat pattern and USER2 is typically configured at boot to light during SD card accesses. Now , you should go to the next
part: Serial Console.
B. Boot from the e MMC
You also can flash the ReSpeaker image files to the ReSpeaker's eMMC (onboard flash memory) directly by using your PC or Mac. Then the ReSpeaker w ill boot
from it's eMMC (onboard flash memory) and not from the SD card.
Step 1. Dow nload our latest image zip file respeaker-debian-9-iot-flasher-********-4gb.img.xz or respeaker-debian-9-lxqt-flasher-********-4gb.img.xz at
OneDrive. The lxqt version comes w ith Debian desktop and the iot version does not. And the flasher version is for flashing eMMC, and the sd version is for
booting from SD card.
Step 2. Burn the *.img.xz file directly to SD card w ith Etcher, or unzip the *.img.xz file to a *.img file, then burn it to SD card w ith other image w riting tools.
Step 3. Af ter burning SD card, insert the SD card in the ReSpeaker Core V2. Pow er the board using the PWR_IN micro usb port and do not remove the SD
card w hile it's flashing.
During the flashing process, you'll see the USER1 and USER2 LEDs blink alternately. It w ill take about 10 minutes to complete. When the LEDs turn off, you can
pow er off the board, pull out the SD card and pow er again. If the LEDs light up, that means the image w as flashed to the eMMC correctly.
You can also check the image version w ith this command: cat /etc/issue.net.
Serial Console
Now your ReSpeaker Core V2 can boot, you might w ant to get access to the Linux system via a console, to setup the WiFi, etc. You have tw o w ays to get the
console:
A. The OTG USB port - This requires a running Linux system on the board
B. The UART port - This is the hard w ay to access the console, it can be used for debugging low level issues
A. Connection via OTG
Step 1. Find a micro USB cable, and please make sure it's a data cable (not just a pow er cable), plug the micro USB end to the ReSpeaker's OTG micro USB
port (There're tw o micro USB ports on the ReSpeaker board, w hich are labeled w ith dif ferent silk-screen, one is PWR_IN and another is OTG), then plug
another end of this cable into your computer.