felias-fogg / memFile

Create a file in EEPROM memory in a cyclic buffer

memFile

This Arduino library provides an interface to EEPROMs. It supports writing sequentially in a cyclic manner. The library is mainly meant to support logging activity. The MemFile class defined here inherits from the EEPROM_SPI_WE class (from the EEPROM_SPI_WE library) and from the Print class.

In addition to all methods supported by the Arduino Print class, which may vary according to the core you use, you have the following methods:

• MemFile(esize, psize, cs, wp, sc) - the constructor, where esize is the memory size (see EEPROM_SPI_WE.h for the constants), psizeis the page size (see EEPROM_SPI_WE.h for the constants), cs is the enable pin for SPI, wp is the write enable pin (optional), and sc is the SPI frequency (also optional);

• begin() - should be called in the beginning;
• write(byte) - this is the virtual method overriding the method from the Print class;
• numberOfLines() - number of lines stored in the file;
• numberOfChars() - number of characters in the file;
• getLine(num, buf, size) - returns the string (space provided by buf) of the num th line of size maximal size ;
• clear() - delete the file.

Examples

SimpleTest - simple test/example

Maintenance - Allows maintaining an EEPROM file