Hi,
I am using XTCIEVMK2X board. The SOC on the board has two UARTs. UART0 is exposed as SOC Linux console and UART1 is going to Expansion Connector A. The dmesg of Linux shows these two UARTS as follows -
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[ 67.805544] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
[ 67.806580] 2530c00.serial: ttyS0 at MMIO 0x2530c00 (irq = 309) is a 16550A
[ 68.474415] console [ttyS0] enabled
[ 68.477687] 2531000.serial: ttyS1 at MMIO 0x2531000 (irq = 312) is a 16550A
[ 68.485486] loop: module loaded
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I want to test these two serial ports using a program which will write characters to the serial port. Before this I want to make sure that ttyS0 is provided by UART0 and ttyS1 is provided by UART1. Right now, I am trying to send characters to ttyS1 but not seeing any activity on Tx & Rx pins of Expansion connector.
Does anyone has information on this?