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USB Serial

Other Parts Discussed in Thread: EK-TM4C123GXL

hi all

i have modified my usb dev serial from the example, i were actually try to modify READUARTData(...) would be enough for me to continue, but i m facing problem

i know that 

i32Char = ROM_UARTCharGetNonBlocking(USB_UART_BASE); 

i32Char will be receive a Data from it where when i send data "A", the I32Char will get "A"

but when i try to do a if else condition,

if(i32Char == "A")
{

//let red LED on

}

but when i try there is no function happen on the ek-tm4c123gxl, only the orginal example is working, therefore i would like to ask is it possible to write like this or do i need to change?