/* SPDX-License-Identifier: Apache-2.0 */ /* * The Arduino D0 and D1 must be connected to each other to loopback RX/TX. */ dut: &usart3 { dmas = <&gpdma1 0 29 STM32_DMA_PERIPH_TX &gpdma1 1 28 STM32_DMA_PERIPH_RX>; dma-names = "tx", "rx"; };