bytesize | easily makes bytes size representation

I'm trying to send byte array data from my computer to my Rpi and I have to use Byte Arrays for the task. As seen below in the first code line, which is the code in my private computer, I create the byte array and send it using ttyUSB0. I also decoded the same packet in my computer which gives the expected result. The expected answer is given in the image below. In my RPi,I use ser.read to read the lines I send but as seen at the last image, the entire package changes when I send the data over. I expect to see the same output I see on the first image when I replicate it on RPi.

I'm trying to get the data stream of a sensor transmitter that uses the modbus rtu communication protocol on my raspberry pi 3B. I'm able to get the data with the pymodbus2.5.3 library. For this I use this code:

I am having trouble interfacing my Nextion display via Raspberry Pi. I have a Nextion project that contains one text field called t0. And I want to change the text displayed from Raspberry.

Here is what I tried:

I have 2 PLCs with serial port. one is mitsubishi Q00Jcpu mc protocol, another is omron hostlink protocol.

I tried to use python pyserial lib to write to the PLC and read response. But failed, I tried to use a serial tool to test and got nice response, serial tool success communicate with PLC, I read CIO address start 100 and size 2, it got 12345678, that is a true result.

my code :

I am trying to establish a secure channel SCP02 with a smart card using python. My smartcard is connected to the terminal using a serial port and I use pySerial to send APDUs.

I send commands SELECT ISD, INITIALIZE UPDATE correctly, and next I try to do EXTERNAL AUTHENTICATE as the python code below:

i am trying to implement google omniauth at my rails 7 app and get the following error:

I have a simple modbus device (Ebyte MA02-XACX0440) that I'm trying to learn how to work with. Using a third party GUI called serial port monitor (www.serial-port-monitor.org) I was able to more or less "stumble upon" the proper hexadecimal inputs needed to turn a discrete output on and then off. I don't understand these terms of unit, address, coils, registers, etc. and how it all relates when it comes to the hexadecimal aspect. To break down what I think I know so far (below is the hexadecimal string that will turn the first discrete output 'ON'):

0x20 0x05 0x00 0x00 0xFF 0x00 0x8A 0x8B

I know 0x20 is the device address in hex. The documentation of the Ebyte device stipulates that the default hardware address is '31' and that the first software address is '1'. If I understand that correctly, that means my first physical modbus device on the line has an address of '32', and if I were to put additional modbus devices on the line (either RS485 or TCP(?)) that the next device would be '33' and so on.

I know that the next byte 0x05 is 'write coil'.

I don't know what the next two bytes of '0x00' and '0x00' refer to.

The next two bytes are essentially on/off with '0xFF00' being 'ON' and 0x0000 being 'OFF'.

The final two bytes are simply the CRC checksum.

So up to this point I can get my DO (Discrete Output) to turn on, open up, and light up an LED as a simple proof of concept. Now when I take that approach over to using the pymodbus library (my ultimate goal), things don't seem to line up.

I am able to connect to my device using the pymodbus REPL using

My goal here is simple: I want a custom c++ toolchain where I can specify my own compilers and compiler options. I have boiled down my current issue into a contrived example repo here: http://github.com/btmcg/bazel_toolchain

I followed the tutorial described at https://docs.bazel.build/versions/main/tutorial/cc-toolchain-config.html to use my custom built version of gcc. This seems to work okay until I add a cc_proto_library. Bazel appears to use my custom toolchain to build protoc/zlib and errors out because of the warning flags I have in my custom toolchain. I was under the impression that --host_crosstool_top=@bazel_tools//tools/cpp:toolchain would tell Bazel to ignore my custom toolchain, however that doesn't seem to be the case. I would expect it to use /bin/gcc and not my custom gcc or warnings. Any help would be appreciated

Here is where the build currently fails:

I'm using react-responsive-modal but I've also tried swapping it out for react-modal - same result. I'm also using react-hook-form for all forms.

I've got one modal that triggers another. The first modal that comes up, loads another component - a form. The modal nested in the form is another form. When I pull up the first form, all works great. When I pull up the nested modal, the function for submitting the form in the first modal, is triggered automatically. This makes no sense to me and shouldn't be possible.

Page that loads the first modal, which also contains the function, passed to the first form, which is the one that is being triggered automatically, unexpectedly.