Using MySQL Database with C++ on Various Platforms Including ARM Single Board Computers

In this article, I would like to discuss about using MySQL database with C++. MySQL is an open source database management system from Oracle. It not only has freely available version but it is also robust and works on most platforms. MySQL server can run even on a small 32 bit ARM Single Board Computer (SBC) like Odroid. It has a lot of functionalities, and user interface too. That is why, I like to use MySQL database server as an example to be used with C++.

MySQL server can be used as a traditional relational database or a document store where there is no need to define schema, called NoSQL. In a relational database, all the columns of the tables need to be defined in advance. But in a document store, the schema is flexible where it is represented by JSON objects. In order to utilize the advantages of power of relational model and flexibility of the document store, using X DevAPI in C++ applications is discussed.

Flash content protection for LPC824

In this article, I would like to discuss about evaluation of LPC824 low cost 32-bit ARM Cortex-M0 microcontroller using OM13071 LPCXpresso824-MAX Development board. LPC824M201JHI33 is used in the board. Its size is only 5 x 5 x 0.85 mm in HVQFN package.

In order to evaluate it, MCUXpresso Integrated Development Environment (IDE) is downloaded and installed. Other tools for it can be found at this link . After launching MCUXpresso and assigning a workspace folder, example projects can be imported by clicking Quick Start Panel (near bottom left corner) -> Import projects from file system ... -> Browse LPC open resources as shown in the following figure.

Accelerometer LIS3DSH

LIS3DSH is an 3-axis MEMS accelerometer made by STMicroelectronics. Its full scale range is selectable from ±2g to ±16g. The size is small and it is only 3mm x 3mm. Either SPI or I²C can be used to interface with it. Supply voltage is from 1.71 V to 3.6 V. In this article, testing and evaluation of STEVAL-MKI134V1 adapter board is discussed.

Figure. STEVAL-MKI134V1 - LIS3DSH adapter board for standard DIL24 socket.