Dilshan R Jayakody’s Web Log

The QN8035 is a stereo FM radio receiver launched by the Quintic Corporation . Compared to other popular digital FM tuners ( RDA5807 , TEA5767 , etc.), this tuner does not seem to be as popular among the DIY community. As we have seen, the biggest problem with this IC is the lack of information. During our initial search, we came across some details about this IC. Much of that information was confined to a product datasheet and a few undocumented GIT repositories. Based on the information we found on the internet, we concluded that Quintic was no longer in business. According to the NXP website , it stated that Quintic Corporation was acquired by NXP in 2015.  Although the Quintic is no longer in business, the QN8035 IC can still be purchase at a low price from online stores. In addition, we found several FM radio kits manufactured using this IC in online stores. Due to the lack of information, I decided to explore this IC to understand its functionality and limitations. In t...

ParseGen is rule driven, parser generator for FPC / Lazarus . ParseGen is design using FPC, FCL and Lazarus and it mainly supports for Windows and Linux operating systems. ParserGen scanner is slight DFA (deterministic finite automaton) state machine. This scanner can operate on case sensitive or case-insensitive modes and it can easily configure/extend through given class structure. The parser of the ParseGen is recursive descent parser. ParseGen generate this parser using high-level source language and this language is logically similar to EBNF grammar. For example, in ParseGen, definition for "term" and "expression" can be written like this: define: expression   optional: "-","+"   end          term          loop: "-","+"     term   end   end define: term   factor   loop: "*","/"     factor   end   end This parser generator...