Questions tagged [ftdi]

FTDI is the manufacturer of (a.o.) a popular UART to USB bridge.

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1answer
43 views

MCP2221 circuit not showing up in device manager, let alone as a COM port

I have made a simple custom board based on an Atmega168A and a MCP2221 for the USB bridge. I have successfully programmed the Atmega to shine the on-board LED and display "hello" on the Serial bus (...
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1answer
68 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 ...
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1answer
35 views

ESP8266 FTDI flash Timeout problem

I'm currently designing an esp8266-based board for a project. It has an LM317 for voltage regulation and the esp8266 is used to drive a RFID card reader (those RC522 reader board from china) and some ...
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1answer
49 views

Unknown characters in the serial monitor

I am trying to sniff the UART communication line of a commercial BLDC controller. The UART port connects to the Bluetooth module and the Bluetooth module connects to an Android App. I am able to get ...
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1answer
67 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 ...
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4answers
99 views

FTDI (FT232R) chip holding the RX line high

The issue that I am having is that the device won't communicate. I have traced the problem down to the RX line on the FTDI chip holding itself high and not letting signals through. I have spent a ...
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1answer
42 views

Voltage Translator (SN74LVC1T45) Locking Up?

I am building a programmer for Atmel AVR devices that includes dual (5/3.3) voltage selection and an integrated FTDI chip for serial diagnostics. I'm using the TI SN74LVCxT45 series for voltage ...
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0answers
69 views

FT230xs USB basic UART converter dropping frames

I'm working with a custom STM32F429 board, I am using serial-USB port (USART1-PA9,PA10) for debug output and diagnostics. When I connect the board the FTDI chip is recognized and proper kernel modules ...
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1answer
65 views

Program ESP32-CAM via FTDI without manual reset?

When programming the ESP32-CAM with an FTDI, I proceed as follows: Connect GPIO0 to GND. Reset the ESP32-CAM. (by cutting power)...
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1answer
39 views

Routing USB under the serial converter - good idea?

I have a design with a FT230XS USB/Serial converter and a USB B connector. My current layout looks like this: Is it a good idea to route the USB lines under the FT232XS converter? Another solution is ...
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0answers
71 views

Slow Adapter Speed on SAMD chips with FT2232H and FT232H

I have been using a FT223H breakout board from Adafruit along with openocd as a cheap SWD programmer for my ATSAMD21 projects both on breadboard as well as final products. It had an odd issue where ...
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1answer
50 views

FT232 Custom Display Name and Device Description

I have put a FTDI FT232RL onto a PCB to control a Microcontroller via USB. It's working fine. When I connect the board to my Windows 10 PC, the FT232RL is recognized as ...
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1answer
68 views

Using FTDI with AtMega328P@3v3,8MHz and RFM69

I am running an AtMega328P-PU at 3v3, 8MHz with external crystal successfully. I am able to burn the bootloader using ISP and flash the chip using FTDI and the clock seems right. The mega is ...
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1answer
119 views

Connect to a serial output device with 12V power input with 5V USB-TO-UART

I have DG600F coin acceptor with 12V power input and serial port output CP2102 usb-uart bridge and FDTI TTL-232RG cabel as an alternative A PC and Macbook as alternative I need to connect DG600F to ...
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1answer
69 views

How do I connect a bno055 chip to a Linux pc via an FTDI UART breakout sensor?

I want to create a C++ (or C) program that reads in a stream of Quaternion data from the bno055 Adafruit chip. My set-up at the moment has an Ubuntu PC as the controller. Plugged into the PC is a ...
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1answer
66 views

PIC16F676 interacting with FT232 hookup

I am hooking up a PIC16F676 to FT232. I already have power hooked and also OSC with 20 MHz and 22pF capacitor. I am still trying to figure out the proper way to hook up the data/serial or something ...
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0answers
51 views

Serial communication for Arduino Mega with RS485 and FTDI using the same TX data line

I need help with the following problem. I have an Arduino Mega in which I connect several devices that occupy the 4 TX and RX ports that this Arduino has. I need to connect an RS485 to the Arduino and ...
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2answers
62 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 ...
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0answers
121 views

USB HID Keyboard Usage Id to ASCII

I am working on a project that will convert a USB HID Keyboard output to RS232. So far, I have a FTDI Vinculum II to host the USB Keyboard and it outputs the USB HID Usage ID (format seen under USB ...
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0answers
104 views

Openocd FTDI “Error: DP initialisation failed”, …missing some finetuning?

I am trying to connect CEC1702 (ARM Cortex M4F) to SWD port of FT2232H. My adapter script: ...
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0answers
66 views

FTDI Chip Windows Error Message “USB device attached malfunctioned and windows does not recognize.” Design Error?

My PCB has a FT230XS-R USB to UART communicating with an AVR chip. My first prototype board worked perfectly except for the USB problem stated in post title. I triple checked everything. Can NOT find ...
2
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1answer
66 views

ADC signal close to D+/D- signals layout suggestion

My circuit is laid out in way so that the analog front end is on a different pcb than the MCU board. The two PCBs are connected with a vertical connector of which 4 pins are used to transfer two low ...
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1answer
99 views

Is it possible to connect D- and D+ to an existing USB to FTDI connection?

This maybe a noob question. I already have an ftdi connection on my board, using an FT232 RL connected to a micro USB. But, the pic i'm using PIC32MX470F512L has D- and D+ for USB interface. Can i ...
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0answers
50 views

Is the regulator doing short circuit after enable?

Is it my circuit/PCB doing a short circuit after enabling the regulator? See image. (I checked the connection physically and is fine.) I don't understand why after enabling the regulator using the ...
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0answers
68 views

Max baudrate of FT2232H in synchronous FIFO mode

In datasheet at FT2232H chip: The FT2232H has the following advanced functions: ... Single channel synchronous FIFO mode for transfers upto 40 Mbytes/Sec. ... I configure device ...
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1answer
108 views

Can the FTDI Tx and Rx tension level be different that it's VCC?

I'm building my own FT232RL to convert a UART signal to USB. The source of power will be the USB 5V, but for reasons of the circuit i already have it would be easier to let more of the circuit keep ...
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1answer
106 views

Remove time gaps before chip select disabled on FTDI

When using FTDI FT2232H in SPI mode, there are relative short time gaps (~2 ms) between positions where clocks are stopped and chip select is disabled. But if data transmission have high speed rate, ...
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4answers
2k views

Is using the CH340G on a commercial product a horrible idea? [closed]

I'm developing a niche product that will be produced at a fairly low volume (low hundreds). I'm using an Atmega uC, and one of the requirements is the ability to be field-flashable by the user. My ...
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0answers
43 views

Reliable methods to read data off a flash chip?

I'm trying to read data off of flash chips on a variety of embedded devices I have, and I'm currently using an FTDI FT2232H and flashrom (with soic-8 clips and probes) to extract the data as they are ...
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1answer
115 views

Duplicate a FTDI FT232R usb->serial cable

I communicate with a serial device using a FTDI FT232R usb -> serial cable created by the manufacturer of the device. Everything is ok I can communicate with the device. Now I have another cable, ...
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0answers
71 views

FT230 Schematic [duplicate]

It might be an easy thing, but I don't understand the following setup: There is the Pin 3V3OUT that acts as source. But at the same time, the pin is connected to the 3.3V source as well. I recreated ...
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241 views

Programming ESP32 Microcontroller with FTDI's FT231XS USB Chip

Purchased FTDI's FT231XS from DigiKey I can see data from the ESP32 microcontroller but when I try to write to it, esptool just says connecting and nothing happens. I can use a usb to serial cable to ...
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2answers
56 views

How can I center a servo using the FT311D?

I've got a servo which requires a 50Hz signal (which can be achieved with a 20ms period) and a 1ms-2ms dutycycle. This is your standard hobby servo. 1ms dutycyle makes it go left (0 degrees) 1.5ms ...
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0answers
42 views

No data being displayed from ADC0804 in program using FT232RL

I'm attempting to read analogue voltage from a potentiometer by converting it into digital using ADC0804 and then passing the data onto y pc using FT232RL. As it stands the ADC0804 circuit is working ...
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1answer
163 views

FT2232 device not accepting address x, error -71

I have designed a board with an USB IC from FTDI (FT2232D). This board is bus-powered (i.e.: gets its power from the USB bus). Nothing else gets the power from the USB bus except this IC and its ...
4
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1answer
182 views

How do USB to serial adapters work?

I'd like to know how a USB to serial adapter (such as the FTDI FT232RL chip) works. The way I think it does is the following: Picture a system composed of a MCU, a USB to serial adapter and the PC ...
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1answer
306 views

Linux Drivers for FT232R [closed]

Background I am trying to build a USB Bridge circuit as part of a larger project. What I mean by that is, I wish to control a parallel out circuit based on information transmitted by the host ...
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1answer
1k views

How to switch between usb host and slave mode on a micro usb programatically?

Is it possible to program some chip that can switch between USB host and slave mode over an single micro USB cable talking to an Android device? It would be OK if there was a slight pause between ...
0
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1answer
101 views

Repurposing FT232 UART pins as parallel out

Background I am trying to build a USB Bridge circuit as part of a larger project. What I mean by that is, I wish to control a parallel out circuit based on information transmitted by the host ...
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0answers
195 views

OpenOCD FT2232H as SWD debugger with STM32L0 mcu

I would like to debug my MCU with OpenOCD. I run this command: openocd -f interface/ftdi/minimodule-swd.cfg -f target/stm32l0.cfg and then I get this prints from ...
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1answer
175 views

USB to I2C for a beginner [closed]

I recently ordered and CJMCU-200 FT200XD a USB to I2C and I am trying to read information from a BME280 using it's I2C output. I am new to FTDI and am having some trouble finding information on how to ...
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0answers
112 views

Programming ATMEGA328P with FTDI232 with original 1.8.1 bootloader

trying to program a custom arduino board, effectively an uno w 328P chip that plays some audio, with a particular board/bootloader, but having some issues. The wiring is fine, as mentioned below it ...
1
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1answer
140 views

Switching IC via FTDI232 DTR and transistor

I am trying to switch an IC on/off via the DTR signal pin on an FTDI232 USB/TTL Serial converter. Basically during the flashing of my ESP8266, I need to be able to power the IC off and then on again. ...
1
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1answer
85 views

Is the following USB connection possible: Host USB to converted to serial (FTDI) and then converted back to USB (FTDI)

I am trying to connect a host USB device on one board to an endpoint USB device on another board, but I am required to send the link between the two devices as a serial (UART) connection between the ...
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0answers
71 views

How to use 3.3 V FTDI Serial Cable with LeMaker Hikey 620 which has 1.8v UART signals

I have FTD Serial Cable TTL-232R-3V3 which operates on 3.3V. https://ftdi-uk.shop/collections/usb-cables-ttl/products/ttl-232r-3v3-2mm I was trying to use it on my Hikey LeMaker for an hour with no ...
0
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1answer
91 views

Power issue on connecting controller to FTDI programmer

Hi, I have connected my controller (ATMEGA2560) input to 5V power supply. At the VCC terminal 5V is shown. The VCC, TX,RX, RESET and GND pins are connected to a FTDI programmer port as shown in figure....
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4answers
1k views

Disadvantages of Buying FT2232H Chips of Uncertain Origin

I was planning to buy this FT2232HL FTDI board from Aliexpress for basic FIFO applications. It is obviously fake; being cheaper than the entire chip itself and having no "FTDI" marking on top of it. ...
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1answer
186 views

STM32L0/FTDI UART Transmit doesn't work

I have STM32L053 (link to overview) and I have been using STM32CubeL0 as UART examples. Also I connected FT232RL FTDI module. Everything was fine. SIM800L and FTDI modules were working fine. Next day ...
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1answer
302 views

FTDI USB to serial communication issue

I am using an FTDI USB to Serial cable to read the startup log of a board. The FTDI cable is not reading the correct information coming from the board. Here is some of the information that I am seeing ...
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1answer
94 views

FTDI board shows only one location id on dual channel 2232H

This is a software question, but I believe people working with this board might have come across this scenario before. I have a FT2232H board that has two channels. I want to program it with an xml ...

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