![]() If you want to support the most common operating systems, Mac OS X, Linux or Windows, the task just gets bigger, easily beyound the resources of a lone developer.īut if you make your device appear as virtual serial port then the drivers will be provided by the courtesy of the operating system ie all the operating systems have built in drivers for serial ports. To make matters worse using USB often requires writing device drivers which can be even more intimidating. While USB standard is realy not that bad once you get into grips with the basics, it can be very intimidating. Most come only with USB and Etherner connections. One of the hurdless that faces anyone who wants to interface a modern PC with the real physical world is the fact that most new computers have neither a serial port nor a parallel port that could be utilized to interface with external world. The code size is less than 2500 bytes and it requires about 230 bytes of RAM memory and it is capable of transferring almost 1 MB/sec (if only the PIC could generate any data at that speed!). The code has been optimized to use minimal amout of memory (both Flash and RAM) and tuned to work well with the Free SDCC C-compiler. ![]() This page introduces a minimal firmware that implements a USB Virtual Serial Port for Microchip PIC18F4550 processor.
0 Comments
Leave a Reply. |