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

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108 views

Programming an ATMega328 with Arduino bootloader via a FTDI USB-serial adapter

I would like your advice relating to using the Arduino IDE and avrdude to program an ATmega328 which is preloaded with an Arduino bootloader. I am using a USB to TTL-serial breakout board based on an ...
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1answer
85 views

Can I use Arduino's FTDI chip for another device?

I have an Arduino UNO (R3) with its main chip and main crystal oscillator accidentally destroyed, but everything else is working I presume. I started learning PIC (16/18f) and was wondering if I ...
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3answers
56 views

Can I use a USB-FTDI TTL converter cable as a USB-TTL converter cable?

I have the need of a USB-TTL converter cable, but all I have is a USB-FTDI converter cable, that means I have two additional pins (RTS/CTS). If I do not connect RST/CTS pair, will the converter cable ...
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2answers
187 views

Debugging tool for the FTDI FT2232H in Sync FIFO mode

Does anyone know of any software available to take data from the FT2232H in 245 FIFO Sync mode and write it to screen or to a log file? Basically, I am using the FT2232H IC to transfer a large amount ...
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3answers
101 views

Do I need to program a USB-Serial FTDI chip before using?

I'm building a PCB with an ATMega chip. In the past, I've used Sparkfun's FTDI breakout board to program the ATMega. However, I'd like to implement the FTDI chip and USB port on my own PCB, ...
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0answers
56 views

FT2232H as USB to MCU UART configuration using D2XX

I'm having trouble using the FT2232H as a USB to MCU UART bridge. I was able to open the device using and set the baud rate using D2XX commands. However, I cant see any UART output in my logic ...
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2answers
144 views

Are FT2232 interfaces completely independent?

Reading through the FT2232 dual USB UART/FIFO datasheet, it is unclear to me if the two interfaces are completely independent. In other words, can I configure interface A as MPSSE and interface B as a ...
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2answers
177 views

FT2232D - Device not responding to set address

I've ordered a custom planned PCB which contains an FT2232D chip. Circuit looks like this: VCC and USB_VCC are connected on another page. GND and USB_GND are connected on another page. Datasheet ...
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2answers
111 views

Possible to use USBTinyISP as an FTDI?

So, I have an atmega328p and I need to communicate with a computer from it, so I need an FTDI. However, all I have is a USBTinyISP. Is there some way I could hack something together so that I can use ...
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3answers
215 views

Problem Switching Relay with Transistor from Microcontroller

This is my first time posting here, so hopefully I'm doing it correctly. I've build a circuit which uses a USB-connected FTDI-UMFT240XA. ...
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3answers
125 views

USB-to-Serial chips or MCU with USB support - what are the options? [closed]

I'm looking for a cheaper alternative of the FTDI chip to add USB support to an MCU, so far I like the PL-2303HX however the problem with it is there are fake copies all over the net. And I don't see ...
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1answer
486 views

Creating a USB to RS485 converter with FT232RL chip

I want to create a USB to RS485 converter with auto switching between transmitting and receiving the data. I found this circuit schematic on the internet. My question is, Do we have to program ...
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1answer
172 views

How to run Arduino-on-breadboard at 3.3V and still have USB communication to PC

I have built an Arduino on a breadboard (using an ATmega328PU) with an 5V FTDI USB controller. I want to be able to run the Arduino at 3.3V instead of 5V. It works completely at 5V supplied by the ...
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2answers
314 views

USB / Serial converter without FTDI Chip [closed]

First of all I want to mention that this question is related to my last question about USB connection. ( please note that this question is about a specific topic that my last question is not about, ...
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2answers
2k views

Arduino fio avrdude: stk500_getsync(): not in sync: resp=0x00

I have tried EVERYTHING to make this work, including replacing the board. I have an arduino fio I am attempting to upload a sketch to it (just a blink to validate it works) with an FTDI to USB cable ...
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1answer
225 views

NXP LPC1114 UART doesn't work after reset

I'm building a simple circuit with LPC1114 to make a "hello world" application using UART. Trying to write all the code from scratch, to have a better understanding on what's happening. My problem is ...
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1answer
188 views

Sparkfun Thermal Printer + FTDI Basic Board w/ C#

I'm trying to connect my laptop to a thermal printer from Sparkfun through an FTDI Basic board using C#. I've been using a .net library from: ...
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1answer
112 views

FT230X Baud Rate Aliasing

I'm using a FT230X UART, and I'd like to use it with a non-standard baud rate. I came accross this note, explaining that I have to modify the driver file, but even with this documentation I have some ...
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1answer
259 views

USB to OBD-II Converter

I want to make a scan-tool that works via a PC for my Thesis. To test it I have bought an ECU simulator (ECU-Sim 2000) with a CAN bus. I'm planning to make it using an FT232H USB to serial chip and a ...
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1answer
77 views

Reuse PIC serial pins

I'm building a board with a PIC microcontroller that uses the Microchip bootloader and it's connected to a FT232RL chip (USB to UART) with the RC7 and RC6 lines. Is it possibile reuse these two I/O ...
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1answer
356 views

Mass storage mode for an SD card connected to a MSP430G2553 chip?

Right now I have a program that stores values obtained from the on chip ADC to a SD card. The card is connected like the diagram shown in this PDF: http://www.ti.com/lit/an/slaa281b/slaa281b.pdf I ...
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2answers
91 views

Async FIFO master / slave

Consider an asynchronous FIFO interface (e.g. FT245, FT2232H or comparable). Since there is no clock, how do you decide who deserved to be called master? Or do you call it controller instead?
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3answers
497 views

What is the purpose of capacitors and resistors in this USB bus?

Trying to understand the purpose of the capacitors and resistors in this bus powered configuration for the FTDI chip, I think the capacitors are for filtering high frequency noise, not sure what the ...
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3answers
233 views

Arduino and FTDI Communications

Short Version Can I make a serial connection from an Arduino to a device with an FTDI connector? Long Version I have a wifi shield for an Arduino that is misbehaving. I know their is an FTDI ...
3
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1answer
299 views

Working with FTDI library for accessing FPGA memory

I asked a related question here. The board is Lattice MACHX02 1200 ZE. I am using FTDI Library FTCSPI to access Lattice FPGA UFM through FTDI chip FT2232H. I configured the FPGA in SPI slave by using ...
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4answers
652 views

Recommendation of a USB to RS232 chip for industrial environment

I have bought a device which has a ATMega microcontroller and a FTDI chip which connects to a computer through USB. The FTDI is used only as RS232 to USB adapter. My problem is that this device ...
2
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3answers
109 views

Is it possible to reduce the number of capacitors in the ft232h recommended configuration?

I'm trying to design a board as small as possible. I'm trying to minimize the number of components I need. My design is based off the self powered configuration of the FT232H chip. I've decided to ...
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2answers
364 views

Arduino with FTDI cable - USB port error

This is my first time using FTDI with Arduino. I'm using the SparkFun EL Sequencer which uses and embedded ATMega328p. I hooked it up to my USB port using this FTDI cable. When I try to upload my ...
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1answer
199 views

Communicating by RS-232

I'm trying to communicate with a serial barcode scanner. This is how i've linked it to my computer (the circles represent the color of the wires already soldered in the serial plug) : When I scan a ...
2
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3answers
361 views

FT230X 3V3OUT pin connected to 3.6V, Safe?

The FTDI ft230X datasheet states that, for the output pin of the internal LDO: When VCC is 3V3; pin 8 is an input pin and should be connected to pin 10. page 7. Meaning that 3V3OUT of the ...
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2answers
524 views

Would this USB detection circuit work as expected?

What I am trying to achieve is detect from MCU, whenever FTDI(FT232R) chip is connected to USB(not enumerated, just powered up from USB). When ONLY USB is connected, MCU will get his power supply ...
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1answer
293 views

Separating USB/MCU power buses

There are two power supply sources in the following diagram - USB and 12V. Only one power supply can be connected at the same time. I am trying to disable power to ...
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1answer
274 views

FTDI/MCU design question to detect boot mode

MCU(ATMega 8 series) on my device has two operating modes Bootloader mode Normal operation The firmware can be upgraded through MCU USART interface. To connect to PC I want to place ...
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1answer
321 views

FT232 DTR pin behavior

The question is whether DTR pin of FT232RL becomes active only if the chip is plugged into PC USB host where drivers are ...
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1answer
269 views

What is state of port B when port A of FT2232H is in sync. FT245 mode?

I am designing Spartan 6 dev board with FT2232H interface, and I would like to use FT2232H to program AT45 flash with bitstream and then switch FTDI to FT245 mode and use 60MHz clock of 2232H as main ...
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2answers
200 views

Application of buffer chip in serial communication

On a microcontroller board that I am working on, there is a buffer chip between the microcontroller TI msp430 F1611 and USB interface ...
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1answer
555 views

Does transmitting break over FTDI chipset yield a binary 0 received on the receiving end?

I send breaks (using Tx) over FTDI FT232R chipset using two ways: ...
2
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1answer
180 views

How to split a signal between 6 lines while maintaining voltage?

I'm using an FTDI adapter to power 6 separate strands of p9813 pixels. These pixels are located at least 4 feet away from the FTDI adapter. Each strand requires the single FTDI CTS out to connect to ...
2
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1answer
139 views

MOV in series with the VCC-IO pin of FT232R

Could someone explain to me why there is a MOV in series with the Vcc IO? Is it to cut power if the pin falls below a desired voltage? (Here's the application note for the circuit.)
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1answer
525 views

Connecting RS232 output of Lattice XP2 Brevia Kit to PC USB (virtual COM port over USB) using a FTDI RS232RL based board

I have a Lattice Brevia XP2 Kit (the older one that came out in 2010/2011, and the not the newer version 2). The only PC connectivity it has is through serial (rs232). I have anetbook that does not ...
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3answers
1k views

Different behavior of FTDI USB RS485 on different computers

I use a FTDI USB-RS485 adapter cable to connect a RS-485 device to a computer. The communication is fairly simple, the computer sends periodic requests, the device answers them. On one computer ...
0
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1answer
397 views

FT245R transmit buffer filling up, repeated IOCTL_SERIAL_WAIT_ON_MASK messages

I'm stress testing the FT245R chip using a basic CPLD to negotiate reading and writing with the chip and PC as the USB host. Basically I have programmed up the CPLD to read in 8 bit words from the ...
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5answers
602 views

FTDI Chip to Serial port

I am wondering if I have the right idea. I need to connect my computer to my servers serial port for some debugging, I have no other computers that have serial ports but I have FTDI serial boards for ...
3
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1answer
670 views

Transmission (TX) halts using FTDI 232RL with ATmega328-PU

FTDI seems to be a popular forum topic, but I can't seem to find an answer to a confounding issue I have. I'll try to give as many details as I can, since I can't seem to narrow down the issue. I am ...
2
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1answer
865 views

Not getting any reading from FTDI UMFT201XB USB-to-I2C module

I got the FTDI UMFT201XB USB-to-I2C module in order to interface with an I2C peripheral through a USB port on my Windows 7 computer. The VCP drivers seem to install correctly, and a COM port is ...
3
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1answer
2k views

Building a JTAG programmer for ATmega

I want to program an ATmega over JTAG, but I would like to build the JTAG programmer myself. Is it possible to program an ATmega128A by constructing a JTAG programmer similar to this? It uses an ...
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2answers
1k views

What is the practical difference between using an FTDI breakout board and an FTDI cable?

I have some 3.3V Arduino Pro Mini boards and they require either an FTDI cable or breakout board to be programmed from a USB port. So far I've been using a board, but it's annoying to have to either ...
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2answers
651 views

Testing an FTDI chip

I have an FTDI chip (reference manual here) that translates USB from a PC to an SPI channel connected to an FPGA. I would like to test that the communication path between the PC and the FPGA is ...
2
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5answers
2k views

Connect a light sensor to PC

I want to connect a light sensor to my PC ( serial or usb ) and read the values of that sensor. Is there a way i can do this without a microcontoller? I am looking into the cheapest method of ...
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2answers
1k views

Uploading Program to Arduino Using FTDI Cable or Programmer

I would like detailed instructions on how to go about uploading a program onto an Arduino using an FTDI cable/programmer. I'm just not quite sure what parts to order and how to go about doing it. ...