I have a quick question - I'm using UART protocol to connect external device to RedPitaya. I started with the example C file provided on the web page. It works very well to send the demo string when tx and rx on RedPitaya are directly connected. For my application I had to modify a little writing function and then I was able successfully send information out from RedPitaya. However, after long time of try and error I failed to receive the signal to RedPitaya. When I run this C app it awaits the data like there would be no data available, while I'm sure that the device is sending a signal. The example of the signal structure to be received is like this:
0x70 0x34 0x33 0xff 0xff 0xff
... so it's basically ascii code of number 43 with initialization and ending characters from the device (where data property is as string) .
I expect there is probably something in the C code responsible for reading that it does not read/see/recognize this data and all the time awaits for the data to become available.
If I type this set of characters between quotes " ...." in the original example app and send it directly from RP's tx to RP's rx then I can see it received, but send from external device is not recognized
I don't know what I can modify so if anybody would have any idea I would be grateful !