@JP-Norair @luz We took a look and confirmed that the default Omega2 firmware uses the standard Linux 8250 serial driver included with kernel 4.14, with the DTS file setting
NS16550A for the port type for all 3 UARTs.
- You mentioned the polling code works well on other platforms. Which platforms did you try out? Did they have NS16550A serial ports and were they running Linux kernel 4.14?
- Can you try using a USB-to-Serial adapter (connected to the Omega2's USB Host port) to check if the same problem appears?