patchAVR C Runtime Library - Patches: patch #8718, Enable EEPROM memory map only...

 
 

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patch #8718: Enable EEPROM memory map only devices with EEPROM Data Memory Mapping Enable bit (EEMAPEN)

Submitter:  Pitchumani <pitchumani>
Submitted:  Mon 17 Aug 2015 09:23:48 AM UTC
   
 
Category:  None Priority:  9 - Immediate
Status:  Done Privacy:  Public
Assigned to:  pitchumani Open/Closed:  Closed

Thu 20 Aug 2015 06:58:34 AM UTC, comment #1: 
Pitchumani <pitchumani>
Group Member
Mon 17 Aug 2015 09:23:48 AM UTC, original submission:  

For Xmega devices, data memory mapping of the EEPROM section can be enabled by setting EEPROM Data Memory Mapping Enable bit (EEMAPEN). This allows us to load/store EEPROM using load/store instructions.

But for Xmega E series, EEPROM is memory mapped in the data memory by default. Data addresses 0x1000 to 0x1FFF are reserved for EEPROM.

So, setting EEMAPEN bit is not required for Xmega E series devices.

This patch modifies eeprom read/write functions to do memory map only if EEMAPEN bit exists.

Pitchumani <pitchumani>
Group Member

 

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Attached Files
file #34665:  eeprom-mem-map.patch added by pitchumani (4KiB - application/octet-stream)

 

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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2015-08-20 pitchumani StatusReady For Test Done
        Open/ClosedOpen Closed
    2015-08-17 pitchumani Attached File- Added eeprom-mem-map.patch, #34665

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