CristianM Posted October 19, 2021 Posted October 19, 2021 Hello. I am using the NanoPi NEO Core board to communicate via UART1 and UART2 ports. I configure the ports using Python - pyserial. This is my configuration code: import serial com = serial.Serial( port = '/dev/ttyS' + str(port), baudrate = 115200, parity = serial.PARITY_NONE, stopbits = serial.STOPBITS_ONE, bytesize = serial.EIGHTBITS, timeout = 0.02 ) The problem is that the UART TX signal is not clean, as you can see from the following pictures: https://ibb.co/5sdvGVf https://ibb.co/zfgZrGT I get the same signal on both UART ports. I also confirm that I get a similar signal even when the UART TX pin is floating, which leads me to think it may be a software or UART interface problem. Does anybody have a clue what the problem is?
Werner Posted October 20, 2021 Posted October 20, 2021 moved to p2p since neo core is H3 lacks requests information 3rd party script
CristianM Posted October 20, 2021 Author Posted October 20, 2021 3 hours ago, Werner said: moved to p2p since neo core is H3 lacks requests information 3rd party script Hi. What do you mean by requests information and 3rd party script? I can add further details to the question if I understand what you mean.
Werner Posted October 20, 2021 Posted October 20, 2021 The forum asks you before opening new topics in bug reporting forums to use the bug reporting form in order to differentiate if it is actual a bug and if so to provide necessary debug information for developers. I assume you did not do that properly. https://www.armbian.com/bugs/
CristianM Posted November 11, 2021 Author Posted November 11, 2021 It turns out it was a problem with the oscilloscope.
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