I have a
.fex file for Cubietruck. Supposedly, the bluetooth pins are defined in the
uart_para2. With the current config, I have
uart2 enabled, and everything else is disabled. Bluetooth functions fine under such condition.
Then, I changed the
.fex file by simply renaming
[uart_para3] and vice-verca (renaming
uart2). The new "uart2" (or the old "uart3") is still disabled.
Now bluetooth does not work anymore.
dmesg | grep tty still shows that
uart3 is mounted on
So what is UART and why does the label matter? I thought it's a label and nothing more, but evidently not.