To enable the back wrap, edit the BackWrap line in the section of the setup file like the following. I tell it to send two hex number, it sends four!!?!? Message 5 of 5.If you enables the back wrap, the cursor at the beginning of a line moves back to the end of previous line when a BS character is received. I've checked and double checked that I'm sending out a hex Anyway it started doing the same for the What is happening? I send out a 32, it replies with a 32 correct! I send out a 30, it replies with a 34, 36 combination. So I tap the line with an Oscope and I see that only some of the numbers are being sent out correctly.
I've drawn up my 1D array of U8, convert it to string using the Ustring converter and send it, but my device does not respond. I need to parse this data, can you guys help me on th is. Does labview cares about the spacing in between the bytes because they are different between the Ranges. Thank you guys, at this point I am able to send my command to device and receive my data per single data command, but eventually I would send a different command to continously get data.Īt this point I have few questions, first my data printed out looks like this on Hyperterminal. Parks "Noman" wrote in message newsE exchange. Once you get the command set down, you can plug them into your state machine. Norman, Learn to write a single commands and get back a valid replies first, before you try to develop an app to continuously communicate with the instrument.
Re: how to send a command in Hex to serial port. I need to send the following command to serial port to serial porthow do i do that in Hex. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. to judge how long it takes one device to respond to data sent by the other).United States. While timing things accurate to one bit time may seem excessive, there are times it can be useful, especially when monitoring the two sides of a communications link (e.g.
If the data rate feeding the PC was four times the data rate being monitored, one could use this general scheme to multiplex two receive channels into one PC port (use a bit of the header byte to identify whether it contained data for the first or second port).
Software receiving these reports would thus be able to reconstruct very precisely (within one bit time) the exact timing of incoming data. When no data is being transmitted, FF pacing characters would be sent every 30 (or 14) bit times. The second byte would have the MSB clear and contain the remaining 7 bits of data. The first byte would have the MSB set, report the MSB (or two MSB's if 9-bit) of the incoming data in the next bit(s), and use the bottom 5 (or 4) bits to report amount of time (0-30 or 0-14) since the middle of the previous byte's stop bit (measured in units of e.g. If your PC can receive data at twice your desired data rate, you could have a microcontroller receive bytes of data and for each byte send out two bytes.
The UARTs historically found on typical PCs have only been able to record accurate timing information or capture 9-bit data by having the processor grab each byte as it arrives, without buffering later operating systems and drivers are generally not equipped to do that, and UART-to-USB chips are hopeless in that regard. Depending upon your exact requirements, it may be helpful to use a microcontroller which can capture and time-stamp the data and then forward it to the PC.