Rust tip: (Unix) drop the current user privileges

Brief

Rust is a modern programing language which is claimed to be blazingly fast and memory-efficient. It syntactically similar to C++, but is designed to provide better memory safety while maintaining high performance and productivity:

• Zero cost abstraction: allow a perfect balance between performance and productivity
• Memory efficient with no runtime or garbage collector
• Memory safe: Rust does not permit null pointers, dangling pointers, or data races in safe code.
• Memory management using an ownership model guarantee memory-safety and thread-safety .
• Great documentation, easy to use compiler and integrated packages/libraries management
• Easy to interface with other language.
• A bit of learning curve for the variable ownership and variable lifetime features.

ARM-Cortex M0 programming with lpc1114FN28 - an overview

This is a migrated version of my Wordpress post, written on : 27 February 2015

What is it?

The lpc1114FN28 is a low cost, low power 32 bit MCU designed in a 28dip package, it is breadboard friendly and very easy to set up for those who are new to ARM programming (like me). Some features :

• An ARM cortex M0 processor, can run at the frequency up to 50 Hhz.
• Built-in Nested Vectored Interrupt Controller (NVIC)
• 32 kb on chip flash programming memory and 4kb of RAM
• In-System Programming (ISP) and In-Application Programming (IAP)
• UART, I2C, SPI, 10 bits ADC
• Up to 22pins GPIO
• And more..

It is designed mainly for micro-controller stuffs (applications), and can be easily programmed with a few more components. In fact, i'm just ancomputer scientist guy who is new to the MCU (ARM) world and that simplicity is a good point for me. I've bought some of them from Ebayand started to learn how to program it.