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cpu/native: Add file-backed simulated EEPROM to native cpu.

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This patch removes a defunct EEPROM implementation from the native
platform and provides a new EEPROM implementation for the native cpu.
The previous implementation appears to be vestigal.

This is useful for testing code which uses the EEPROM without running
the code on the actual hardware.

By default the code will create a new temporary file as the EEPROM
backing, reinitializing each time. If you would like to preserve the
EEPROM contents or specify a specific EEPROM file to use, you can set the
`CONTIKI_EEPROM` environment variable to the name of the EEPROM file you
wish to use instead. If it already exists, its contents will be used.
If it does not already exist, it will be created and initialized by
filling it with `0xFF`---just like a real EEPROM.

A new example is also included, which was used to verify the correctness
of the implementation. It can easily be used to verify the EEPROM
implementations of other targets.
This commit is contained in:
Robert Quattlebaum 2013-01-10 09:34:48 -08:00
parent 5af6540980
commit b8c0f2de6c
10 changed files with 298 additions and 69 deletions
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15
core/dev/eeprom.h
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@ -55,7 +55,20 @@
#define __EEPROM_H__
typedef unsigned short eeprom_addr_t;
#define EEPROM_NULL 0
#define EEPROM_NULL 0
#ifdef EEPROM_CONF_SIZE
#define EEPROM_SIZE (EEPROM_CONF_SIZE)
#else
#define EEPROM_SIZE 0 /* Default to no EEPROM */
#endif
#ifdef EEPROM_CONF_END_ADDR
#define EEPROM_END_ADDR (EEPROM_CONF_END_ADDR)
#else
#define EEPROM_END_ADDR (EEPROM_SIZE - 1)
#endif
/**
* Write a buffer into EEPROM.