Robin2 and J-M-L. I was reading yours posts and really was very helpfull for me. I modified a little J-M-L example, sending_several_lines_of_characters.ino, to receive some commands from a VB.Net program. I started changing your code const char * labelsOfInterest[] = {"V", "I", "VPV", "PPV", "CS"…

germancorrea: I close monitor or Serial Com11 and run my program in VB.Net, connect Serial COM11 and I send f? first time, I get ððððf? without frecuency value because if (!strcmp(cmds*, item)) fails.* If I resend again same command, f?, I get f? 0. [/quote] I'm not familiar with VB.net - it's …

Thanks Robin2 for your answer. I am trying to adapt demo program and get it working fine. I am going to send commands from my VB.Net program to set frequency to 560 Hz, set Voltage to 50 Volts or set Current to 150 mA., for example, using f 560, v 50 and i 150 (leavin a space between command and v…

germancorrea: Everything works but not nice, due to for my first cmd issued after port connection shows ððððf?, ððððv?, ðððði? and ðððð*? for *? command and ððððf, ððððv and ðððði for set commands. Besides that, if I send same query command several times, sometimes I receive value with a space bu…

I am certainly not going to load an executable file. In any case I'm using Linux. And I don't like opening ZIP files. I really sorry too much. And notice how much easier it is to read text with white-space between paragraphs. I am taking note. Thanks Then study your code and figure it out. …

The ATmega16U2 has a bug in firmware. When you open the COM port without resetting the MCU Atmega328P the ATmega16U2 send a pulse to the Atmega328P RX line (and also to the USB lines but it's ignored, I think) that is interpreted as data depending on baud rate. If you use 9600 is ignored but startin…

zoomx: The ATmega16U2 has a bug in firmware. When you open the COM port without resetting the MCU Atmega328P the ATmega16U2 send a pulse to the Atmega328P RX line (and also to the USB lines but it's ignored, I think) that is interpreted as data depending on baud rate. If you use 9600 is ignored bu…

I talked about it in the italian section here https://forum.arduino.cc/index.php?topic=402709.0 I replicate the test code here /* F0problem Test program to resolve the F0 problem When Serial port is opened in Windows I found an F0 in the Serial buffer */ //Serial input with terminati…

I have tried your program on a genuine Mega with a 16u2 and I can't see any erroneous behaviour. I am using Linux Mint and I have tried it with minicom and putty. Where might I expect to see this unwanted character? And when I am writing a PC program to communicate with an Arduino I always have it…

I have not tested a Mega, it should be the same but I am not sure. I used Windows 7. I noticed this behaviour the first time using a Visual Studio program but then I was able to replicate it in other terminal programs. I believe that you have to open and close the port without using any flow contro…

Re: Data Input demo sketch

Projects Programming

Robin2 November 21, 2017, 8:51am 12

zoomx:
F0 F0 F0 F0 are the same bytes that I get opening port in Windows without resettting Arduino.

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Re: Data Input demo sketch

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