@Andreas-Thölking I'm not sure Omega2 is the best choice as it doesn't have a video controller, maybe a USB to HDMI/VGA would work.

@francisco-vieira I agree with @crispyoz, this sounds like a handshaking issue - my guess is in hardware. To check on this, you can use the devmem command to read the UART0 status registers. I would start with the Line Status and Modem Status registers. See the MT7688 datasheet for more info on the registers, and run devmem --help on the command line to see how to read the registers.

Posting an update on this topic received on our helpdesk: After a lot of investigation, we already identify and solve the problem. The problem was on a cable inside our Gateway that induces electromagnetic signals on the Onion Omega 2+ when the GPRS is in use. We already protect the Onion Omega 2+ from electromagnetic signals and right now we are confident that it is solved.

@crispyoz thank you so much for your suggestion. I think we will follow your suggestion and add some logic on our service to guarantee all the required resources/services are up before we start our service. Thank you so much my friend.

@Nagarjuna-Reddy Doesn't look like you're writing the correct value to the GPIO1_MODE register. Take a look at the GPIO1_MODE register definition, you're probably interested in the SD_MODE bit fields.

@crispyoz sir i uploaded onion schematic. I cont able to upload the full image because of it's in PDF format. I think PDF files can't able to upload in here.

@Nagarjuna-Reddy The thread @tjoseph1 is a good resource. There's also this one that can come in handy: https://community.onion.io/topic/4196/faq-how-can-i-control-which-network-interface-is-used-for-network-traffic-like-use-wifi-in-some-cases-but-ethernet-in-others

@crispyoz : This is my observation : Had he completed Harward, world wouldn't have had broken windows.. The MRE in sgi mips architecture was a break through(the entire hardware works like a pointer), supported by 80Gbps interconnect let the world watch general pupose processor generated animations, 30 yrs back. Though I am junior by all means, I too feel, innovations were sacked.

Reset was successful, and now I can start from scratch. Thanks for informing me on the alternative method.

Using the Expansion Dock with Omega2, running FW, 0.3.2 b233. Please see the image that shows the termination of pins. Let us choose PWM CH1, marked as pin 19. Let us check the current GPIO configuration. root@Omega-CCC9:/# omega2-ctrl gpiomux get Group i2c - [i2c] gpio Group uart0 - [uart] gpio Group uart1 - [uart] gpio pwm01 Group uart2 - [uart] gpio pwm23 Group pwm0 - [pwm] gpio Group pwm1 - [pwm] gpio Group refclk - refclk [gpio] Group spi_s - spi_s [gpio] pwm01_uart2 Group spi_cs1 - [spi_cs1] gpio refclk Group i2s - i2s [gpio] pcm Group ephy - [ephy] gpio Group wled - wled [gpio] =>pwm1 is configured for pwm root@Omega-CCC9:/# dht-sensor 19 DHT11 humidity: -255.000000 temperature: -255.000000 =>We get the wrong readings. Let us reconfigure pwm1.. root@Omega-CCC9:/# omega2-ctrl gpiomux set pwm1 gpio set gpiomux pwm1 -> gpio =>And verify pwm1 has changed to gpio. root@Omega-CCC9:/# omega2-ctrl gpiomux get Group i2c - [i2c] gpio Group uart0 - [uart] gpio Group uart1 - [uart] gpio pwm01 Group uart2 - [uart] gpio pwm23 Group pwm0 - [pwm] gpio Group pwm1 - pwm [gpio] Group refclk - refclk [gpio] Group spi_s - spi_s [gpio] pwm01_uart2 Group spi_cs1 - [spi_cs1] gpio refclk Group i2s - i2s [gpio] pcm Group ephy - [ephy] gpio Group wled - wled [gpio] =>Let us try again.. root@Omega-CCC9:/# dht-sensor 19 DHT11 humidity: 87.000000 temperature: 28.000000 => Put the pwm1 back to pwm root@Omega-CCC9:/# omega2-ctrl gpiomux set pwm1 pwm set gpiomux pwm1 -> pwm => And try.. root@Omega-CCC9:/# dht-sensor 19 DHT11 humidity: -255.000000 temperature: -255.000000 =>Once again, put pwm1 to gpio. root@Omega-CCC9:/# omega2-ctrl gpiomux set pwm1 gpio set gpiomux pwm1 -> gpio root@Omega-CCC9:/# dht-sensor 19 DHT11 humidity: 87.000000 temperature: 28.000000 => Try DHT22 root@Omega-CCC9:/# dht-sensor 19 DHT22 humidity: -255.000000 temperature: -255.000000 The DHT11 usually have 3v-5v operating range, with 5v5 specified as the max voltage. I used 3v3, not 5v; using 5v would probably damage the 3v3 inputs of Omega2. Also, the DHT11 I have already has the pull-up built onto the assy. Note: I have only 3 days hands-on with Omega. I could be wrong in the commands and config above.

Yes, I've already started looking at webcams (on Amazon), and definitely found a few that have built in microphones. I was just hoping to hear from someone who can confirm that they've already tried it and that it does in fact work. What about connecting 2 different USB devices to the Onion (ie: a webcam + audio device)? Does anyone here know of some kind of USB splitter or hub that doesn't require an external power source? -- Yvan

No problem, happy you got it working!