UART0_CONFIG_USE_EASY_DMA =1 lead hight consumption

[strengthstrong]

i use sdk14.2 52832      i use uart

UART0_CONFIG_USE_EASY_DMA =1  consumption ~2.1mA

UART0_CONFIG_USE_EASY_DMA =0  consumption ~650uA

Is this a normal phenomenon, is it true that UART0_CONFIG_USE_EASY_DMA = 1 causes power consumption to reach 2.1ma?

If this is abnormal, how to solve it?

[Stian Røed Hafskjold]

This is normal. The easy DMA bus itself consumes quite a lot of current. However, since you don't need to use the CPU to read/write from the RX/TX buffers (in DMA mode), the difference shouldn't be that much in average.

[strengthstrong]

Why sdk13 nrf52810 The same configuration as this example Power consumption test is very different,

when  UART0_CONFIG_USE_EASY_DMA =1  consumption ~650uA

 

I checked the forum, some people say that this is caused by the difference of sdk, if I want to achieve the effect of sdk13 52810 how to do

[strengthstrong]

when i   set  UART0_CONFIG_USE_EASY_DMA =0 Through the serial port data transmission to the mobile phone, a small amount of data is no problem, but when I adjust the transparent transmission rate to about 5kb/s, the following picture will appear. What is the reason? If it is 6kb/s, it must be turned on. Dma,

[strengthstrong]

Didn't respond for so long? why

[strengthstrong]

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