Hi folks, i'm trying to read 5 bytes coming from a Python script via Serial, the value of the bytes is a number between 0 and 180, until the value of the bytes is <127 everything works fine but after that i get an extra byte of value =194 in between the actual bytes i need. I'm Reading in bytes…

I actually switched to Serial.write() to check what was the weird char, with the serial print gives me the decimal value of it, the char is Â, thank you for your answer

194 = NO-BREAK SPACE ( the in HTML)

194 is C2 hex. UTF-8 encodes codepoints 80 through BF as C2 followed by the codepoint. Looks like oqibidipo may be right—it seems the Python code is somehow interpreting a raw value (e.g., 0x80) as if it's a character codepoint and then sends it over serial in UTF-8.

[image] xfpd: 194 = NO-BREAK SPACE ( the in HTML) NO-BREAK SPACE is U+00A0, which is encoded as C2 A0 in UTF-8.

Does python insert chr$(0x20) or does it insert so if it inserts multiples of the character in question, they are treated as multiple spaces (in the case of ) rather than ignoring multiple inserts of chr$(0x20)?

[image] oqibidipo: UTF-8 i'm sending the bytes from TouchDesigner Serial OP. i'm actually sending chatacters obtained with the chr() python function. the aactual code is like that: op('serial1').sendBytes(chr(int(op('OutPos')[0])),chr(int(op('OutPos')[1])),chr(int(op('OutPos')[2])),chr(int…

When it comes to UART communication, here what I think is important to check: is UART 7bit with Parity? Is any side (sender or transmitter) assuming bit 7 is Parity? It can be also the host: when it sends ASCII code - which is just 7bit - it might lock OK when receiving characters 0..127 but it …

Hi that was UTF-8 encoding as you guys said, i found this arcticle very helpful: [image] Parola A to Z – Handling non ASCII characters (UTF-8) A question that I am asked on a regular basis is why particular characters in messages are not displayed ‘as-expected’ by the Parola library. Th…

Reading in weird char from Serial

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oqibidipo August 5, 2022, 8:15pm 5

That looks like UTF-8 encoding. How are you sending the values in the Python code?

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Reading in weird char from Serial

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