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Second UART
Posted:
Mon Nov 03, 2014 3:41 amby bjpirt
I couldn't seem to find this info elsewhere but from what I have been reading it sounds like there is a second UART. I found a reference to GPIO2 being able to be used as U1TXD but does anyone know if there's a corresponding U1RXD and how I would configure this for use?
Cheers,
Ben
Re: Second UART
Posted:
Mon Nov 03, 2014 3:57 pmby mcsa
In example 2nd uart use only for tx(for debug)
Re: Second UART
Posted:
Wed Nov 05, 2014 9:48 amby bjpirt
I got a response from Espressif about this and I quote:
uart1 RX is multi-used for spi-flash , so there is only TX for uart1. uart0 TX RX are both available.
So, unfortunately only one full UART available if you're using the SPI Flash.
Re: Second UART
Posted:
Sat Dec 19, 2015 2:42 pmby John Heath
The problem with UART0 is that RX0 is unavailable if you're using I2S, b/c its the Data pin.
Finding out that UART1 is TX only, I'm going to have to use I2C to communicate with my Diag board.
That's so silly. But thanks for the info guys.