miniterm | browser terminal emulator designed to be | Portfolio library

I am trying to use miniterm to execute Lua commands on my NodeMCU. I don't think there's any problem with my chip or cable because I can code the chip using Arduino IDE. While using miniterm, I believe we are supposed to get a interactive command prompt, but I never get that. Some articles have suggested pressing the ENTER button or resetting the NodeMCU, but that hasn't worked as well. I believe I have successfully installed the USB to UART CP2102 driver (from Silicons Lab). Any suggestions as to what else I can do?

This is my 'miniterm.py' command output. The unknown symbols continue whenever I press the ENTER key...

That's the code I've wrote so far is:

I tried to remove a package with pip in a Jupyter notebook but it never finishes and I have to eventually restart the kernel without it uninstalling. I tried:

My program is supposed to emulate external device that is usually connected via COM port (/dev/ttyUSB0). The program opens a pty and waits for commands. Here is the code:

Was using the below command from terminal to read the serial output -

I have a GSM modem 'D-Link DWM-157'. I want to use this modem to send SMS and USSD codes. To send sms I use smstools3 and everything is OK. The goal of sending USSD code is to retrieve the balance in order to recharge the SIM card. To send USSD codes I want to use smstools3 as well. The problem is that when I send a USSD code from port /dev/ttyUSB0, I have to receive it's answer from /dev/ttyUSB1 port!! I asked on smstools forum about this behavior and they told me some modems used two ports for sending and receiving USSD codes. I don't think there is such an option in smstools3 to send a USSD code via a specific port and receive it's answer from a different port (I asked about this on their forum, but they have not replied yet). So I want to write a simple program to continuously listen to a port (i.e. /dev/ttyUSB1), receive and parse the answers of USSD codes. The USSD codes are sent by smstools3 but the answers are received by my program. To do this, I wrote the following code:

This might be a silly question, however, I don't know what is happening.

I have a simple script who fetches google time and I need to set it to the time global variable. So, inside the receive event, I print the time fetched and it works properly.

The problem is the variable time always as empty when called outside the event. Here is the code:

I have a

• Variscite VAR-SOM-AM33 SoM and dev board (VAR-AM33CustomBoard)

and I'm trying to get UART3 to work with a

• Sparkfun FTDI Basic Breakout - 3.3V TTL UART to USB adapter (http://sfe.io/p9873)

Summary of the puzzling part: I am also working on a custom SoM carrier board based on this Variscite dev board and I know that UART0 works perfectly when I cut the traces and hook up my Sparkfun UART/USB. So there is clearly a difference in how UART0 is configured verses UART3.

I have used this exact FTDI USB adapter on many projects and it always works great. Here's what I've tried to enable UART3 on the dev board:

• UART3 with RXD and TXD only
• UART pins
  • C15 is RXD, No Pull (unlike UART0 by the way)
  • C18 is TXD, Pull Down (just like UART0 by the way)

After wandering around the enormity of the default kernel serial 8250 stack, I eventually stumbled upon the omap-serial.c driver. I wanted to see if it would magically fix my problem or in the least, be less code to sift thru (being a single .c file).

So I configured the kernel (make menuconfig) to disable 8250 and enable CONFIG_SERIAL_OMAP found in Device Drivers->Char Drivers->Serial Drivers.

The TI Pinmux generates this code which I add to my Yocto environment's kernel device tree:

I have a ESP8266MOD ESP-12-E hooked up to a USB-to-UART module. When I try to communicate with the module I get some intelligible output then an error message and the communication is closed.

For ai-thinker-0.9.5.2-115200 and espressif-nonos-2.0.0-SDK (this is not the actual name of the file):