And you'll struggle upstream if you go that route. Pretty much all vendors for embedded platforms only provide C libraries/drivers/examples/subsystems/documentation.
The compiler vendors I listed are vendors for embedded platforms, they also sell boards.
The problem, as expressed multiple times on C++ conferences, is the devs that are religiously against anything that isn't C89 + language extensions + Assembly.
Surely I know that, but there is this image being sold that C is the only option, when those companies that I have listed are in business for at least 20 years now.
I also know there are a large amount of people in the trade that have zero regard for writing secure C code, despite the availability of tooling to help in such regard.
Which is getting worse now that those systems are being plugged into the Internet.
Sure, I've seen embedded work done with anything from assembly to Lisp. But it's all marginal, trying to get into embedded development without learning C would be very career limiting. For example, not sure how many new projects are started in 2018 with Pascal on PIC but suspect not a lot.
Perhaps the most popular non-C development platform these days is Arduino on Atmel 8 bit chips, but it is still really a dumbed down version of C(++).
https://www.mikroe.com/mikropascal-pic
https://www.mikroe.com/mikrobasic-pic
http://www.astrobe.com/default.htm
https://www.ptc.com/en/products/developer-tools/apexada
https://www.ghs.com/products/ada_optimizing_compilers.html
Some examples of non-C languages used in production code for doing stuff with hardware.