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TWI and UART

Situation: SES, SDK 16, nRF52832, no BLE.

I'm trying to use both the UART and TWI 0. TWI works fine with BLE and all the rest. However, when I enable the UART, TWI quits working but the UART works just fine.

1) I checked instantiation - the two do not share.

2) UART and UARTE both enabled in sdk_config.h as in peripheral/uart example.

3) Using app_uart_fifo per the demo.

4) You can't compile the legacy stuff required without UARTE enabled, there's a compile time error.

Where to start?

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