FTDI FT245R power requirement

Started by Mark Borgerson in comp.arch.embedded11 years ago 5 replies

I've used the FT245R for USB data upload in a number of data logger designs. I have generally used the logger 3.3V supply to power the chips....

I've used the FT245R for USB data upload in a number of data logger designs. I have generally used the logger 3.3V supply to power the chips. However, I just ran across the following note in the most recent FT245R data sheet: "Notes: 1. The minimum operating voltage VCC must be +4.0V when using the internal clock generator." This not was not present in earlier incarnations of th...


MCU + USB

Started by Mochuelo in comp.arch.embedded14 years ago 14 replies

Hi, I don't know if there is a better group to ask about USB. I want to create a device that will communicate with a PC via USB. I prefer...

Hi, I don't know if there is a better group to ask about USB. I want to create a device that will communicate with a PC via USB. I prefer USB to RS232 because I plan to power the device from the USB supply. I guess I have (at least) two options: 1) I use an MCU with integrated USB interface. 2) I use any MCU, plus an FTDI FT232R (USB-UART device), or equivalent. Option 2 makes pro...


UART design considerations

Started by Keith M in comp.arch.embedded12 years ago 16 replies

I've implemented a simple software-based UART on a 50-mhz Parallax uC. I'm operating it at a baud rate of 2mbps. It talks to an FTDI FT232BM...

I've implemented a simple software-based UART on a 50-mhz Parallax uC. I'm operating it at a baud rate of 2mbps. It talks to an FTDI FT232BM chip (http://www.ftdichip.com/Products/FT232BM.htm) in a usb- serial converter. While I've done extensive testing of the transmit portion of my code, I'm still working on and refining my RX code. Most UART implementations use an over-sampling (I've ...


Designing a protocol for the first time

Started by CC in comp.arch.embedded12 years ago 22 replies

Greetings, I wish to transfer binary data in the simplest way possible from a PC to either an AVR or TMS320F2812 embedded target via...

Greetings, I wish to transfer binary data in the simplest way possible from a PC to either an AVR or TMS320F2812 embedded target via USB. The PC will be running a Python/wx.Python program and use PySerial to send data out through the virtual COMM port produced by using a FTDI FT245BM USB-to-FIFO parallel interface chip on the target. Ideally this program will be useable on Linux as ...


FTDI FT232BM Hyperterminal Problems

Started by C Bremer in comp.arch.embedded15 years ago 13 replies

Hi. I'm working on a project where I am connecting a Garmin OEM GPS Receiver (asynchronous, RX-TX-GND) through the USB port in Windows...

Hi. I'm working on a project where I am connecting a Garmin OEM GPS Receiver (asynchronous, RX-TX-GND) through the USB port in Windows XP. Initially I connected the GPS through COM1 and successfully received the data in HyperTerminal. The GPS sends data at the factory default of 4800, 8N1. The GPS sentence length is 55 bytes plus a LF and CR at the end, one sentence per second. (only the $...


USB<->RS232 converter cable recommendations.

Started by Brian Murtha in comp.arch.embedded16 years ago 9 replies

Has anyone torture tested USB RS232 converter cables lately? The ones Dontronics sells with the FTDI chipset have been working great for us,...

Has anyone torture tested USB RS232 converter cables lately? The ones Dontronics sells with the FTDI chipset have been working great for us, but they raised the price through the roof. We need one that supports DSR and DTR signals, works on all Windows OS's except NT & 95, handles 460,800 baud, and has good quantity 100 pricing. -Brian http://www.rabbitsemiconductor.com http://ww


Advice neede: Atmel or Philips ARM

Started by Meindert Sprang in comp.arch.embedded14 years ago 39 replies

Hi Gurus, I am switching from AVR to ARM. Currently, I use an ATmega162 which is running out of code space (16kB) and performance. But I find...

Hi Gurus, I am switching from AVR to ARM. Currently, I use an ATmega162 which is running out of code space (16kB) and performance. But I find it difficult to choose between Atmel's ARM (looking at the SAM7S series) and thePhilips LPC2104/5/6 series. I don't need many peripherals (yet). My current design uses an FTDI chip for USB, I could save that by using Atmel (Philips has no USB), but o...


Luminary LM3S811, USB Serial and Linux -- Thanks and followup

Started by Tim Wescott in comp.arch.embedded11 years ago 1 reply

Thank to "cs_posting", Mil Wilson, and all the other respondents, I have gotten my Linux machine talking to my Luminary LM3S811 evaluation...

Thank to "cs_posting", Mil Wilson, and all the other respondents, I have gotten my Linux machine talking to my Luminary LM3S811 evaluation board. The board uses an FTDI FT2232D chip in a design that is advertised as being compliant to the OpenOCD design, but which uses a unique product ID. Luminary provides Windows device drivers, but no Linux support. It turns out that I had to edit ...


OT.keyboard from PC/mac to embedded thingy

Started by Martin Griffith in comp.arch.embedded12 years ago 6 replies

I'm working on my pension scheme project. 99% worked out, coded and I just need one little extra. I need to embed text info into my serial...

I'm working on my pension scheme project. 99% worked out, coded and I just need one little extra. I need to embed text info into my serial datastream ( that is going through my 8051) from the usual PC/mac coming from the keyboard in an open text document, Word, Open Office etc. Probably use FTDI stuff on my 8051 board. That is echo the keyboard to a USB/ serial port, one way only. I...


Little help needed with FT2232L USB demo board

Started by laser in comp.arch.embedded13 years ago

Hi, I have hit a bottleneck while using FIFO interface mode of FTDI FT2232L USB demo board, which i plugged into my linux box (2.4.20-8smp). I...

Hi, I have hit a bottleneck while using FIFO interface mode of FTDI FT2232L USB demo board, which i plugged into my linux box (2.4.20-8smp). I made sure that the ftdi_sio and usbserial modules are removed. To verify that the onboard EEPROM is actually configured to 245BM FIFO interface, I used Mprog (in windows). Next, I have installed the latest libftdi and libusb packages and tried to ex...


FPGA on Android

Started by Tim in comp.arch.embedded5 years ago 13 replies

- non-volatile FPGA plus FTDI USB chip - connects to an Android host mode USB port - application software in Lua, with Java interface/driver -...

- non-volatile FPGA plus FTDI USB chip - connects to an Android host mode USB port - application software in Lua, with Java interface/driver - high-level Gideros software for whizzy graphics - FPGA firmware samples, including logic analyzer in source also works on a PC - useful for reprogramming the FPGA. Everything open source. www.bugblat.com/products/fan -- Tim


How to synchronize a streaming system with FPGA+FT2232H FIFO

Started by dlopez in comp.arch.embedded10 years ago 19 replies

Hi, I'm having trouble figuring out how to architect a robust system using the FTDI chips in FIFO mode. I'm pretty sure some of you have been...

Hi, I'm having trouble figuring out how to architect a robust system using the FTDI chips in FIFO mode. I'm pretty sure some of you have been through this before. I'm using the FT2232H in synchronous FIFO, but my concerns are general. The system has PC FT2232H FPGA, and is used to both stream/receive data between the PC and the FPGA. I'm wanting to stream continuous data at about


Problem interfacing FT232BM and AT89S8252

Started by escuderon in comp.arch.embedded13 years ago 1 reply

I'm in problems!! please Help Me!!! I'm interfacing an 8051 from Atmel (AT89s8252) with an USB to serial converter from FTDI (FT232BM). The...

I'm in problems!! please Help Me!!! I'm interfacing an 8051 from Atmel (AT89s8252) with an USB to serial converter from FTDI (FT232BM). The FT232BM is Bus Powered and the 8051 is powered through the BUS too. The interfacing i use is simply through the UART of 8051 directly to the TXD and RXD pins of FT232BM. Just for testing, I've programmed the 8051 t osend a byte to the port conti...


Altera USB blasters as USB-SPI interface with ponyprog

Started by Antti in comp.arch.embedded4 years ago 1 reply

hi a first version of the solution is available from its temporary home at my brains download...

hi a first version of the solution is available from its temporary home at my brains download area http://groups.google.com/group/antti-brain/files?hl=en it does allow unmodified PonyProg 2.07c to use Altera USB blaster to program SPI devices, instrucions are in the download archive its very raw version, first FTDI device is assumed to the be the blaster testing is done with U2TOOL in...


java equivalent for D2XX for FTDI chip FT245RL

Started by JOEY in comp.arch.embedded8 years ago 1 reply

Hello Everyone am Joe, i am student at DIT doing his project and a beginner at using FT245r chip, i was able to get the D2XX file to write...

Hello Everyone am Joe, i am student at DIT doing his project and a beginner at using FT245r chip, i was able to get the D2XX file to write code for visual basic for FT245r but my project requirement is to write this program in java. Please does any know how i can get the D2XX implementation for FT245rl chip in java. i couldnt find an open source version that i could use. if you know any...


FTDI FTD2xx driver problem with DLP-2232PB device

Started by Kris in comp.arch.embedded14 years ago 13 replies

Hello all! I use the DLP-2332PB for development of the data acquisition device. Using the internal A/D converters of the PIC I would like to...

Hello all! I use the DLP-2332PB for development of the data acquisition device. Using the internal A/D converters of the PIC I would like to sample the incoming analog signal with the rate of 20MHz(per single channel)-1kHz. The PIC-side code was written using CCS complier supplied with the device. The host-side code written using C# 2.0 compiler and PInvoke facilities. Device driver is FT...


stty -F /dev/ttyUSB0

Started by Johann Klammer in comp.arch.embedded1 month ago 4 replies

stty -F /dev/ttyUSB0 speed 0 baud; line = 0; min = 1; time = 0; -brkint -icrnl -imaxbel -opost -isig -icanon -iexten -echo (something is...

stty -F /dev/ttyUSB0 speed 0 baud; line = 0; min = 1; time = 0; -brkint -icrnl -imaxbel -opost -isig -icanon -iexten -echo (something is wrong) stty -F /dev/ttyUSB0 ispeed 38400 stty: /dev/ttyUSB0: unable to perform all requested operations But if I give an obv wrong value it doesn't complain. stty -F /dev/ttyUSB0 ispeed 3840 The dongle is a FTDI Chip TTL-232R-5V USB to TTL...