FTDI is the manufacturer of (a.o.) a popular UART to USB bridge.
3
votes
2answers
151 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 ...
1
vote
3answers
52 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
votes
1answer
181 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 ...
6
votes
4answers
192 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
votes
3answers
92 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 ...
1
vote
2answers
143 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 ...
0
votes
1answer
83 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 ...
1
vote
2answers
140 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 ...
1
vote
2answers
260 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 ...
3
votes
1answer
168 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 ...
0
votes
1answer
148 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 ...
0
votes
1answer
162 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 ...
1
vote
1answer
141 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 ...
1
vote
2answers
133 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 ...
2
votes
1answer
152 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
votes
1answer
100 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
votes
1answer
78 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.)
0
votes
1answer
236 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 ...
1
vote
3answers
672 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
votes
1answer
250 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 ...
0
votes
5answers
377 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
votes
1answer
495 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 ...
1
vote
1answer
406 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 ...
2
votes
1answer
952 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 ...
1
vote
2answers
879 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 ...
5
votes
2answers
402 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 ...
1
vote
5answers
1k 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 ...
0
votes
2answers
887 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.
...
2
votes
1answer
319 views
Can I use a roostick, which contains FTDI chip to program my arduino chip?
I bought a Roostick from here, I believe this uses the FTDI chip. Most recently I bought an Arduino parts kit to learn about the Arduino board here. One of the ways this board can be programmed is ...
1
vote
1answer
2k views
FT232R eeprom problem .. how to make PC recognize it
it's my first time to use FT232R ..
when i connected it to the USB for the first time .. my Windows recognized it well, and its drivers were successfully installed ..
and even after programming it ...
0
votes
2answers
366 views
How to work with FTDI V2DIP1-48?
Could someone please direct me how to interface with this chip? I am a total newbie in electronics, and after buying this chip, well, i have absolutely no idea how to connect it.
The chip has an USB ...
2
votes
1answer
291 views
FT2232HL interface board critique
This is my first "real" design, a (more or less) universal USB serial interface board with two RS-232 ports, one RS-485 and one CAN interface. Hi-res schematics, top and bottom PCB layers with bottom ...
5
votes
3answers
348 views
How can I increase the number of hardware UARTs in a design with a single UART MCU?
I am using a TI CC430 MCU because it contains an embedded CC1101 radio frontend. I would really like to stick with this MCU. However, I need to simultaneously interact with a separate serial radio, a ...
2
votes
1answer
378 views
using usb serial converter as VDIP? arduino
There are several documents about interfacing between Arduinos and USB flash drives.
Do I have to use "VDIP1" only, or is it OK to use FTDI USB-to-serial converter?
It seems both methods can use ...
4
votes
2answers
670 views
How does an FTDI chip work?
Someone asked me the other day how an FTDI USB to serial UART works, and I realized I didn't know. I looked at the datasheet for the FT232R and the block diagram didn't really help me. Can anyone ...
2
votes
3answers
530 views
FTDI basic breakboard + PIC18F452
Im doing a project with a PIC18F452 and I will have to use USART. Thus, I bought a FTDI Basic breakout board (from Sparkfun) to make debugging easier. The board is the 5V version.
I already tested ...
2
votes
1answer
263 views
Serial brick camera
I bought this serial electronic brick camera from Robot shop recently. I connected it to a Spark Fun FT232R shield. I am able to open my virtual COM port but I am not able to capture any images.
This ...
3
votes
6answers
602 views
Monitoring two serial lines at the same time
First this is the setup:
(please note that one of the grounds is not connected, both FTDIs working properly)
Now, I have used PuTTY to look at these two serial streams, both exchanging data at 9600 ...
1
vote
1answer
812 views
FTDI based Xilinx JTAG
I have some boards with Xilinx Spartan 3 FPGAs, I would like to upload new bitstreams over JTAG. I was planning on using UrJTAG.
I already have a couple of FTDI based JTAG adapters for ARM targets - ...
0
votes
4answers
944 views
Low cost FTDI cables?
I'm looking for USB to serial FTDI cables. However, the cheapest I can find is $20 US each, which is way too expensive, given my price target for the entire product is $70. I'm hoping they can be ...
2
votes
4answers
590 views
Small “FTDI”-like chip
I am looking for a small USB to RS232 (or TTL serial) converter. FTDI was the first stop, but the smallest IC they have is in SSOP28 or QFN32. I'm looking to go even smaller. I don't need high speed - ...
9
votes
2answers
5k views
Serial newbie: why can't I just hook the wires up?
I'm trying to transmit from an ATtiny85 to a PC using Arduino-esque code over a USB-Serial converter without understanding very much of anything. I was shocked and appalled that it did not work.
I ...
2
votes
3answers
370 views
What causes a UART device to continuously repeat its last transmission?
I just got this awesome Bluetooth module in the mail. I connected power and UART pins, and tied pin 34 to +3.3v with a 1k resistor (that puts the module into AT command mode rather than pass-through ...
4
votes
2answers
2k views
FTDI FT2232H (USB <-> UART) baud rates?
Anyone used one of the FT2232H chips from FTDI?
Specifically, how do you figure out the permissible baud rates?
The data sheet is kind of vague, and I have to pick something in the 1-3 MBaud range ...
8
votes
3answers
1k views
Arduino reset with FTDI breakout question
How do you get the SparkFun FTDI Basic Breakout board to auto reset?
http://www.sparkfun.com/commerce/product_info.php?products_id=9115
I still have to hit the rest button for any Arduino clones when ...
1
vote
1answer
241 views
Lilypad upload error
I'm trying to get the Lilypad working on my machine but i get the following error.
I had a Google for it but everything keeps pointing to a problem with the board. I swapped it out and tried another ...
