Do you use C++ for device drivers in embedded systems?

[DeclaredButNotUsed]

Do you use C++ for low level device drivers like accessing registers of peripherals like UART, I2C, GPIO, 1-WIRE, hardware timers etc... ?

Also, just to clarify, by embedded system I mean Cortex-M0, M3/4 devices etc... not Cortex-A or any equivalent that can run embedded linux.

 

[doraemon]

Hello!
I do!
When properly done, there is no speed penalty. Basically configuring a peripheral is just about writing configs.
For instance if you configure a SPI port, you will write register specifying its speed, polarity, phase, etc. So first
for the configuration, writing it in assembler, C or C++ doesn't change anything.
Next, as for exchanging data, everything is made by the hardware, therefore there is no speed issue either.
I usually setup the hardware to use DMA, so I get a callback function called when a buffer is ready.
But I suppose you will have as many different opinions as there are users on this site.

Dora.