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README: Add details about the UART

Signed-off-by: Alistair Francis <alistair@alistair23.me>
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Alistair Francis 2021-01-17 09:55:27 -08:00
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@ -34,7 +34,16 @@ To put the rM2 in recovery, you will need:
![Pogo](https://i.imgur.com/yPymkBx.jpeg)
![USB-C Breakout](https://i.imgur.com/YqYELeg.jpeg)
![Connection](https://i.imgur.com/RGerZyp.jpeg)
![Connection with UART 1](rM2-Uart-1.jpg)
![Connection with UART 2](rM2-Uart-2.jpg)
## UART
UART6 TX is exposed via the pogo pins ID pin.
You can connect an FDTI chip (3V3) to ID pin to get UART at 115200 baud.
For more details checkout the wiki: https://remarkablewiki.com/tech/rm2_otg_pogo
For details building u-boot and Linux to support this checkout
[meta-freescale-3rdparty](https://github.com/Freescale/meta-freescale-3rdparty).

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