All Questions
52
questions
0
votes
1
answer
373
views
FT231XS is not recognised by Windows
I am trying to implement a USB to serial bridge using an FT231XS to program an ATmega over USB using Optiboot.
My breadboard is exactly the application circuit for a bus-powered application (it draws ...
- 115
0
votes
1
answer
230
views
How is the output of this circuit RS232?
I'm trying to design a multi-channel USB-RS232 adaptor (inspired by this) to go into a larger design. After hunting a little, I found this schematic in the datasheet for FTDI's FT4232, which is the ...
- 172
1
vote
2
answers
2k
views
Programing the ESP32 with FTDI cable
I bought FTDI’s TTL-232R-3V3 to USB Serial Converter cable to program my ESP32 board
When I decided to put the flip flop circuit to connect ESP32 reset & boot0 pins to DTR & RTS pin, I ...
- 343
1
vote
2
answers
1k
views
FT232RL PCB design
I am working on a PCB board design. I am using an STM32 as processor and an FT232RL as a USB to serial UART interface.
If I make a circuit as in the attached schematic, can I transfer data with USB ...
- 29
0
votes
1
answer
329
views
Transmitting data over FTDI usb-RS485
I am trying to using a USB-RS485 cable (which utilizes the FT323R). I have it configured to be all output, and to run in async bit bang mode.
I am only able to see data on my scope if I call the set ...
- 123
0
votes
1
answer
1k
views
How to debug serial communication with RealTerm?
I am trying to debug an LCD device with an RS232 UART interface.
I am using RealTerm on a Windows 10 machine.
The UART interface works properly. I have checked the sending device, using an ...
- 131
0
votes
2
answers
2k
views
Sending large ammount of data with USB
I'm currently facing a big problem.
I've an MCU (STM32L4) connected to an SD card (SDIO) which stores tons of data (5Gb) from a microphone. I need to send this data as fast as possible from SD card to ...
- 101
1
vote
1
answer
102
views
Different behaviour of FTDI231XS on two PCBs with same circuit
I have designed two PCBs, both using a FTDI231XS USB to serial chip to program an ESP32. Both boards have the same circuit design to control the FTDI231XS chip. One board was hand soldered (board A); ...
- 21
1
vote
1
answer
1k
views
Connecting a USB to UART converter to a computer's serial DB9 port
I have an APU2 that diverts any 'display' over a serial console (DB9F). For accessing the serial console, a null modem cable is recommended where the wires are crossed over. However, my computer does ...
- 1,340
1
vote
2
answers
1k
views
Flashing program into microcontroller, usb-ttl, idea behind?
I have limited knowledge on this topic(MCUs, communication protocols, etc.). I back then worked with an STM32 MCU and did some UART(or USART, can't remember) communication between a PC and the MCU. ...
- 2,106
0
votes
1
answer
75
views
Long Range (100m) USB(PC) to USB (microController USB module) Communication
I have a system that communicates between PIC32MX250F256D (USB module) and PC via USB (2 meters apart). And I need to increase the range of this communication to 100 meters. Due to typical 5m limit of ...
- 171
-1
votes
2
answers
266
views
How Serial Port Loopback Test work internally/underneath? [closed]
Actually I've asked my question on StackOverflow, but I really think it belongs here.
Here it is anyway:
When doing a Serial Loopback Test on a USB Port (assume COM1) using Hyperterminal or any other ...
- 111
0
votes
1
answer
892
views
Garbage on RS232 and no the baudrate IS correct
I have a device like this https://www.vaisala.com/sites/default/files/documents/WXT530-Users-Guide-M211840EN.pdf.
Some facts:
I have an FTDI to USB board from Sparkfun which is tested to work with ...
- 113
-1
votes
1
answer
940
views
FT232R for RS-485 (DMX512) with isolation - TX optocoupler
I am trying to make a DMX controller board using the FTDI FT232R (FT232RL) chip for USB to UART and a MAX485 to output data over RS-485. I have a working prototype done, but for the finished product I ...
- 1
3
votes
2
answers
776
views
RS422 Receiver Not Reporting Errors When Too Few Stop Bits
I am interfacing with a device (the transmitter) which configures its serial settings to 8 data bits, no parity, 1 stop bit at a baud rate of 115200. These are known values and fixed values I can't ...
- 177