All Questions
Tagged with logic-analyzer uart
13 questions
0
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0
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75
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The issue with sending a message over UART
I'm trying to track a signal coming to my microcontroller, but I ran into an issue where the USB-UART converter only sends the signal from the PC when the UART is not connected to the microcontroller, ...
- 119
16
votes
2
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3k
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Need help in identifying and learning to identify this unknown protocol, which has a good chance to be proprietary to the hardware I'm analyzing
I am re-purposing the metal case of old industrial laptop, it would be nice to keep current touchpad, because it's glued to the case AND because I'm having fun trying to convert it to my purpose.
Here ...
- 163
0
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1
answer
73
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Bypassing a filament cartridge chip / Logic analyzer expert needed!
I have a 3D printer from a manufacturer that has discontinued their PLA filament cartridges. These cartridges were equipped with a chip that seemed to track filament usage. The printer, one of their ...
2
votes
1
answer
139
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How to identify protocol of unknown 7 segment display chip?
I'm trying out logic analyser with digital clock I have laying around. The clock uses 7 segment display (4 digits) and consists of two parts: display with unknown chip inside and main board with two ...
- 125
1
vote
2
answers
180
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Help decoding unknown data stream
I'm currently diving into the task of cracking the data stream protocol for a generator control system. There's this setup with a control box sitting next to the generator, and a remote switch in the ...
- 95
1
vote
1
answer
340
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How to probe UART pins of a phone?
I'm gonna try to probe this phone for UART pins: https://www.youtube.com/watch?v=scsAlvMie1M
I have a cheap logic analyzer and just bought really pointy probing pins (waiting to arrive), I also have ...
- 75
0
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2
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7k
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How to read "inverted" uart signal
I have am experimenting with an MDB device. I have a simple setup, with an MDB master, and my own NXP EVK board which acts as slave.
I started with just a logic analyzer, to verify that I see ...
- 581
0
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2
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224
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RS485 Reverse Engineering
I'm reversing a RS485 comunication.
I have purchased a logical analyzer for reversing and sniffing the data packets.
But i have a problem, don't knowing the exactly comunication parameters i can't &...
2
votes
1
answer
590
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Purpose of inverted channel for UART bus communication
I'd like to understand the purpose of an inverted logic channel on device-to-device communication that is being done via UART.
For some background - I'm trying to reverse engineer this device-to-...
- 199
1
vote
2
answers
750
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Can I use a cheap logic analyzer as a USB to UART TTL cable?
I need a USB to UART (TTL) cable for connecting to an onboard JTAG connector. Since I already own a Sigrok logic analyzer, I figure it might function soley as a USB to UART cable. Is this possible?
...
- 2,417
2
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1
answer
154
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What is this communication standard I'm seeing? It looks like UART but with a third line
What the title says. I looked into flow control, as that seems like the obvious answer to "what are these extra lines in my UART communication?" But what I'm seeing doesn't really look like flow ...
- 21
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3
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6k
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How do I analyze this UART signal?
I want to make the same signal like the following images using an Arduino Uno. But I can't find the baudrate of this signal.
I calculated baudrate the same way as Wikipedia. But when I used the ...
- 125
2
votes
1
answer
2k
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UART as logic analyzer?
I'd like to reverse-engineer a certain 2-wire digital circuit. I'm looking for the cheapest possible logic analyzer. I don't know the exact frequency of the circuit, but it's sub-1MHz. (Likely in the ...
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