uarte current consumption of the reference value

RE: uarte current consumption of the reference value

Stayhungry — Wed, 13 Dec 2017 11:49:38 GMT

Thanks you .

RE: uarte current consumption of the reference value

MartinBL — Wed, 13 Dec 2017 11:46:54 GMT

When the RX task is triggered the UARTE requests the clock and other resources so, no, the system is no longer in idle state and will start to draw current.

RE: uarte current consumption of the reference value

Stayhungry — Tue, 28 Nov 2017 15:46:02 GMT

I'm afraid this will not work, because I need to support 1M baud rate, but also need to support both enable / disable flow control

When I start rx dma, but the sender did not send data can be considered idle state？

RE: uarte current consumption of the reference value

MartinBL — Mon, 27 Nov 2017 13:59:31 GMT

Hi,

The UART is in idle mode when it is enabled, but not transferring data.

Have you considered using the CTS input pin as a wakeup source? You can have the system sleeping and when the peer device pulls CTS low you wake up the system and start the UART. Due to the UART's low transfer speeds the system should be able to wake up fast enough.