Questions tagged [uart]
A UART (Universal Asynchronous Receiver Transmitter) is a piece of logic that sends and receives data on a serial port.
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Do FT232 come pre-programmed out of the package?
I'm working on a board which requires USB serial communication. For this I want to use an FT232RNL, however I'd like to know if I need to program it before I install it on the board. Also, do I need ...
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LED does not blink when transmitting/receiving UART
I constructed the circuit as shown in the picture (I omitted the unnecessary parts)
I expected the LED to blink when the UART transmits and receives, but the LED is always on.
Is something wrong with ...
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Efficient Padding for UART to Minimize Power Consumption
So, I am implementing a custom protocol over UART (data field in the packet is fixed at 8 bytes + contains a len field). If the data len is less than 8 bytes, 0xFF is being used for padding. I ...
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Communication does not occur when connecting an LED to the UART line
I attached LEDs using transistors to UART RX and TX as shown in the attached photo.
But the led doesn't work and the uart doesn't work either.
If I remove this circuit the uart works fine
What's the ...
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FT230X using USB-C receptacle not working for data transfer
I have tried to add a USB-C connection to my PCBA solely for data transfer.
I have used a FT230XQ-R microchip (Datasheet) and followed their uploaded example for a USB-C receptacle. I have now ...
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How to get started with hacking this device [closed]
I'm new to hardware hacking and very interested in learning more about it. I've watched a few videos, learned how to solder, and can now identify chips on boards. Recently, I came across UART and ...
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FTDI chip not working properly [closed]
I recently purchased an FTDI chip from AliExpress. However, every time I try to use it on Linux via the picocom command, it gives me a lot of unknown characters. I ...
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How to work with UART to make communication between stm32 and hmi nextion display in noisy environment?
in an ultrasonic generator project, I am using an STM32F334 microcontroller as the main controller and an HMI Nextion display (model NX8048T070) that includes another STM32 for driving the monitor. I ...
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Is it normal to get garbage output through UART when resetting the microcontroller?
I have written functioning code for Serial Communication through UART, and when stepping through the code it transmits characters just fine. I have done this using microlib, so I can use printf (I ...
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RX and TX show 0 voltage: is my ESP32-C3 broken? [closed]
While desoldering, I think I damaged the TX and RX pins.
I set the multimeter to DC (20), connected the black probe to GND, then the red probe to RX. The reading was 0. The same with TX. And the ESP32-...
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What is the real transmission speed in UART?
I'm trying to transmit data at 6.144 Mbit/s through the UART port of Nucleo-H723ZG microcontroller. For reading on the PC, I'm using Free Device Monitoring Studio. Based on my UART parameters, I ...
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Decoding unknown serial data from treadmill console board
I have been working on a treadmill project whereby my aim is to manually control the treadmill with an Srduino without using the remote.
Info about the treadmill - The treadmill is just a normal ...
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Fingerprint sensor module communication (FPM383 R503)
I'm working on a fingerprint sensor that is known as FPM383. It is much like the well known R503 sensor. Their datasheet and serial communication manual are almost identical.
I was trying to control ...
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For a UART communication, when do we enable/disable the peripheral wrt changing between transmitting and receiving mode?
I am working with SAML22 microcontroller and I am supposed to write the transmission code using the interrupt mode. I am confused in which case I am supposed to disable the peripheral.
When changing ...
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UART communications using CAN bus differential signalling
I need to interface with a device that talks UART, but with CAN bus signalling. Here's a picture where a tester (which I want to replicate) talked to that device:
While RS485 seems similar, the ...
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