Actually your post wanted him to use a certain OS type. Point is, regardless of the OS (not that the OS has a choice), it is possible and not difficult. On every OS that runs on the Pi.

I agree it's not difficult because someone (usually a systems programmer) has done most of the work in the OS to make applications programming easy. If someone wants to use a HLL for programming then the Linux OS is a good choice.

 

DigiSpark is smaller and cheaper, i got mine for $1.2

http://digistump.com/products/1

 

Actually your post wanted him to use a certain OS type. Point is, regardless of the OS (not that the OS has a choice), it is possible and not difficult. On every OS that runs on the Pi.

A little confused now. Can I write directly to the registers? Also, what is ioremap?

 

A little confused now. Can I write directly to the registers? Also, what is ioremap?

ioremap is a Kernel function that allows code to access hardware through a mechanism called I/O mapped memory that's used in the Linux kernel or drivers. (device or protocol) Most Linux user programs use mmap with root access to open /dev/mem and mmap to map the region of physical memory into User space memory as needed. Then you can read and write to IO registers.

https://www.raspberrypi.org/forums/viewtopic.php?t=8476