deveric

Sorry for the delayed response... actually it worked out-of-the-box. It ended up being the tool I was using to communicate w/ the serial port with. Not sure why it wasn't working. I ended up coding my own in Go (golang), connected to the UART1 (/dev/ttyS1) 115200,8N1 and it worked beautifully.

EDIT: Actually, finally got it working...

Also, FWIW... you can connect this device via USB also, which I've been able to communicate with that route; however, I've been unsuccessful in getting it to work when connected to the GPIO. It powers up, etc. Just can't get the communication to work. I'm sure it's 100% my lack of knowledge. Pretty new to the SBC thing, as well as any hardware that connects to them. I'm tinkering... not winning... but still trying.

I'm not sure... I thought it was UART3. I've tried communicating with it w/ the default Armbian settings using /dev/ttyS0 - /dev/ttyS3 without success. I've attached what documentation I can find on the board. SIM5320A-EVB-V1.0.pdf SIM5320_Hardware_Design_V1.05.pdf SIMCOM_SIM5320_ATC_EN_V1.31.pdf

I just recently bought a sim5320a GSM/GPS cape for my Tinkerboard S and it requires the use of ttyS3; however, by default Armbian uses this port for console... so I'm unable to use it w/ the cape. What do I need to do to disable the console on this port to free it up? EDIT: Nvm... after reading more, this isn't my issue (although I did find the answer above, which is to edit the /boot/armbianEnv.txt file). It's (the GSM cape) connected to the GPIO, and I need to enable the UART serial on here. Posted below is the product I'm using, and the last picture shows the GPIO PIN mappings that it uses. https://vietnamese.alibaba.com/product-detail/sim5320a-5-9v-2a-3g-gsm-gprs-gps-expansion-board-wcdma-hsdpa-for-raspberry-pi-60634340686.html#!

You guys kick ass... appreciate it, and all you do for getting these devices to play nicely with Armbian! :P

Just got my Tinker Board S in... used Etcher to flash the following image to the eMMC: Armbian Stretch mainline kernel 4.14.y It won't boot. That same image flashed to the SD card boots just fine. I've tried using the armbian-config to install it to the eMMC that way; however, all I get are "There are no targets. Please check your drives." What the heck am I doin' wrong? New to the entire SBC realm, and got this instead of the Pi. I don't want a desktop distro installed... just a simple distro w/ bash. Any help would be appreciated... spent the last 6 hours trying to figure this out. This isn't the 'tinkering' I had in mind when I got this thing. Thanks... Respectfully, Eric