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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@tage
With the Espruino board, I am using a serial display and I am also using the SD card. The serial display only requires TX pin on the Espruino, the RX pin is unused. Right now I am using C10 (UART4 TX) for the display and I have left C11 (UART4 RX) unconnected.
I am wondering if I can instead use UART5 TX for the display even when I have the SD card in use? In the list of pins not on connectors I see D2 being used for SD card and it also has UART5 RX, which I assume means that if I do not use the SD card then I could use UART5.
But what if I use the SD card, can I use the UART5 TX pin for the serial display with no problems? The communication with the display is only one direction. This would allow me an extra serial port. (I am running out of pins).