Have you already written web applications to render real time data in graphs? The data (relay outputs) are captured by a microprocessor and...

Have you already written web applications to render real time data in graphs? The data (relay outputs) are captured by a microprocessor and sent via RS232 to a Raspberry PI running Linux. The data are time stamped (count of milliseconds). The goal is to display the data in a graph with the time as X axis and the relays states as Y axis. There are several relays on a graph. The graph m...

Hello, I am working on a design that requires interfacing a PIC microcontroller to the rs232 serial port of a PC. I am using the UART of the...

Hello, I am working on a design that requires interfacing a PIC microcontroller to the rs232 serial port of a PC. I am using the UART of the PIC16F628 but I am having problems: I can not get my PC to recognize the serial data sent by my PIC. For testing purposes I hooked up a palm pilot to my PC serial port and tried to echo characters using Hyper Terminal - it worked fine. However I ca...

Hi, I have a custom made communication gateway PCB with an AT90CAN128 microcontroller meant to control OnPCB components. The PCB card has its...

Hi, I have a custom made communication gateway PCB with an AT90CAN128 microcontroller meant to control OnPCB components. The PCB card has its own 6 PIN ISP interface that i connect to the 6 PIN ISP of the STK500 board. The STK500 board is connected to the PC through the standard RS232 cable. I am using AVR studio 4 to download the program onto the controller's flash memory. When i try to ac...

I have a PCB with the AT89C51SND1C Atmel MP3 processor. I have loaded the Atmel FLIP software (V2.2.4). I found that the device does not...

I have a PCB with the AT89C51SND1C Atmel MP3 processor. I have loaded the Atmel FLIP software (V2.2.4). I found that the device does not repond to the RS232 communications from the FLIP software. An email to the Atmel support was quickly answered and I was told to use USB instead. I have installed the USB drivers for FLIP, but now when I try to open the USB port I get the error messag...

I've got the following hardware requirement: 2 x RS232 port Bluetooth (to talk to a mobile phone) Ethernet (speed irrelevant) USB...

I've got the following hardware requirement: 2 x RS232 port Bluetooth (to talk to a mobile phone) Ethernet (speed irrelevant) USB (Controller) A small qwerty keyboard A small text LCD 640x480 Video output NTSC video output No particular processor power is required Low power dissipation Needs to fit into a box approx (mm) 100 x 50 x 150 I've designed loads of embedded hardware over ...

I am searching for a Linux hardware (which will be used in a model airplane) with the following specs; * Small * Battery operated...

I am searching for a Linux hardware (which will be used in a model airplane) with the following specs; * Small * Battery operated (single power input 5v, or 9v or 12v) * Light weight * Supports min 4 RS232 ports * Parallel printer port (for digital I/O) (or 8-16 digital I/O) * Optional USB port * 10/100 Ethernet port * Capable booting either from a USB memo...

Hi I need to control a TI 16C752 directly. My question is when the FIFO is enabled ( it has 64 bytes TX/RX FIFO). The interrupt level can be...

Hi I need to control a TI 16C752 directly. My question is when the FIFO is enabled ( it has 64 bytes TX/RX FIFO). The interrupt level can be set with 8 bytes or 16 bytes, which means only when the data in FIFO reaches this level, an interrupt will be generated. How can I read the last bytes if there is no interrupt to triggered the main program? Some senario: The interrupt level is s...

I am building a Remote Large Display for a weighing machine. The weighing machine continuously send out readout data of the weight it measures via...

I am building a Remote Large Display for a weighing machine. The weighing machine continuously send out readout data of the weight it measures via an RS-232 port, which I intend to connect to my 89C51-controlled 5 digit 7-segment display. Unfortunately, the weighing machine can only communicate in 2400Bps 7-bit even parity format. I have tested my display successfully with Hyperterminal program...

Iam designing a system consisting of: Microblaze Core RS232 Uart Lite SPI controller The SPI controller will communicate with an ADC...

Iam designing a system consisting of: Microblaze Core RS232 Uart Lite SPI controller The SPI controller will communicate with an ADC converter placed outside of FPGA. In order to modelize the system, previous to implement it, I have included an VHDL model of the converter. I don=B4t know what is the best way to simulate the system whole.. ModelSim is a harware simulator and I think t...

Can I ask some expert advice to select radio modems to be used in a small UAV (a model airplane infact) ? Desired specs for the radio modem; ...

Can I ask some expert advice to select radio modems to be used in a small UAV (a model airplane infact) ? Desired specs for the radio modem; o Range : 5km (or more) o Weight : Lighter than 150gm o Data rate: 56-115.2K bits/sec o Interface : RS232 (and/or TTL) o Price : Must satisfy budget constraints of five uni students (ie. as low cost as possible) :(

I have a serial device that is using MCU's UART (rs232) for data transfer, every time my device is suppose to deliver 20 bytes making it a...

I have a serial device that is using MCU's UART (rs232) for data transfer, every time my device is suppose to deliver 20 bytes making it a single transaction. We have a VB and C# app using MSCOMM and it works perfectly. Now I have added an Ethernet converter to convert serial data to TCP/ IP packets. It works atleast for half of the time. For the rest of the problematic half the behavior i...

Should have crossposted with with comp.arch.fpga. ---------------------------------------------------------------- At the end of November we...

Should have crossposted with with comp.arch.fpga. ---------------------------------------------------------------- At the end of November we released the HSMC GPIB, this provides much needed functionality to any Altera dev kit with an HSMC connector including.... 8 * 10 bit ADC Inputs 8 * 10 bit DAC Outputs 2 * General Purpose 8 bit Digital IO ports 3 * RS232 Interfaces 2 * RS484 Inte...

You remember about 5 years ago, PC's had serial ports and parallel ports. Right now I've got a laptop and it only has USB. I've been...

You remember about 5 years ago, PC's had serial ports and parallel ports. Right now I've got a laptop and it only has USB. I've been looking around for some sort of adapter device for converting USB to DE9 for serial ports, and also USB to DB25 for parallel ports. All over eBay, there's USB-to-parallel-port adapters that work as follows: There's a converter from USB to RS232 and it ha...

I'm trying to connect a Windows PC to an embedded system via an RS232 link implementing SLIP. Ultimately I'll have a web server running on the...

I'm trying to connect a Windows PC to an embedded system via an RS232 link implementing SLIP. Ultimately I'll have a web server running on the embedded system. It seems that the only way to do this at the Windows end is to configure a dial-up with SLIP selected and pointing to an imaginary modem on COM1/2. At the embedded end I need to mimic the behaviour of a modem until the connection...

Hi all , I am using GPIO lines of an AVR to control the RTS & CTS lines of the RS232 interface. The level convertor that I am using is...

Hi all , I am using GPIO lines of an AVR to control the RTS & CTS lines of the RS232 interface. The level convertor that I am using is MAX3222. Software wise when the AVR is configured as a DCE so the RTS line is input and CTS is output , the software sets the GPIO going to the CTS high as long as it has buffer space , when it is wants the DTE to stop sending data it pull the GPIO low. ...

Looking at diagnostic tools that are hand held, Palm Pilots, PDA`S, custom made etc for specific tasks. For example laboratory balances, GPS,...

Looking at diagnostic tools that are hand held, Palm Pilots, PDA`S, custom made etc for specific tasks. For example laboratory balances, GPS, some makes of cars etc have RS232 data outputs. It would be great if one could just have a small board for one specific task connected to a portable or semi portable display screen so you can read the data output instead of using a large desktop or...

I am looking for small embedded ARM board with ethernet+USB+multiple RS232+general purpose parallel I/O lines+multiple channel ADC+realtime...

I am looking for small embedded ARM board with ethernet+USB+multiple RS232+general purpose parallel I/O lines+multiple channel ADC+realtime clock and capable of running Linux. (Am I sking too much?) Do you know ARM board with these specs?

I am looking a low power (less than 5watt), small embedded Linux board to be carried on a model airplane. Linux box must have * Flash...

I am looking a low power (less than 5watt), small embedded Linux board to be carried on a model airplane. Linux box must have * Flash Disk (64-128MB) * 128-256MB memory * at least 3 serial ports (RS232) * a parallel printer port (to be used as digital I/O) * a wireless LAN (optional) Can anybody help with this ?

Hello All, anybody offering an industrial module, preferable rail mountable, with two EIA232 (RS232) ports, 24V input(s) (preferable with one...

Hello All, anybody offering an industrial module, preferable rail mountable, with two EIA232 (RS232) ports, 24V input(s) (preferable with one HW counter) and an Ethernet port? I'm also interested in custom software (combine EIA232 data and pulse count, "transmit via Ethernet" (to be defined)) - don't want to do it myself. Should be COTS, no big volume. Oliver -- Oliver Betz, Mun...

Cheers, Has anybody tried to port ATMel's own AVROSP ("AVR Open-source Programmer", see:...

Cheers, Has anybody tried to port ATMel's own AVROSP ("AVR Open-source Programmer", see: http://www.atmel.com/dyn/general/tech_doc.asp?doc_id=9852 ) for Linux? It seems otherwise quite generic code, except that the module SerialPort.cpp is wholly Windows-specific, so I need just to create the corresponding interface using standard Posix-interface to RS232-port. Other possibility would...