Fix EEPROM being erased by upload

Need to issue "Burn bootloader" to make it effective

Author: facchinm

boards.txt

@@ -20,6 +20,10 @@ uno2018.build.core=arduino
 uno2018.build.variant=uno2018
 #uno2018.build.extra_flags=-B{runtime.tools.atpack.path}/gcc/dev/{build.mcu}
 
+uno2018.bootloader.tool=avrdude
+uno2018.bootloader.SYSCFG0=0xC9
+uno2018.fuses.file=fuses_4809.bin
+
 menu.mode=Registers emulation
 uno2018.menu.mode.on=ATMEGA328
 uno2018.menu.mode.on.build.extra_flags=-DUNO_WIFI_REV2_328MODE

fuses/fuses_4809.bin

@@ -124,7 +124,7 @@ struct EEPROMClass{
     //STL and C++11 iteration capability.
     EEPtr begin()                        { return 0x00; }
     EEPtr end()                          { return length(); } //Standards requires this to be the item after the last valid entry. The returned pointer is invalid.
-    uint16_t length()                    { return E2END + 1; }
+    uint16_t length()                    { return EEPROM_SIZE; }
 
     //Functionality to 'get' and 'put' objects to and from EEPROM.
     template< typename T > T &get( int idx, T &t ){

libraries/EEPROM/src/EEPROM.h

@@ -113,11 +113,11 @@ tools.avrdude.program.pattern="{cmd.path}" "-C{config.path}" {program.verbose} {
 
 tools.avrdude.erase.params.verbose=-v
 tools.avrdude.erase.params.quiet=-q -q
-tools.avrdude.erase.pattern="{cmd.path}" "-C{config.path}" {erase.verbose} -p{build.mcu} -c{protocol} {program.extra_params} -e -Ulock:w:{bootloader.unlock_bits}:m -Uefuse:w:{bootloader.extended_fuses}:m -Uhfuse:w:{bootloader.high_fuses}:m -Ulfuse:w:{bootloader.low_fuses}:m
+tools.avrdude.erase.pattern=
 
 tools.avrdude.bootloader.params.verbose=-v
 tools.avrdude.bootloader.params.quiet=-q -q
-tools.avrdude.bootloader.pattern="{cmd.path}" "-C{config.path}" {bootloader.verbose} -p{build.mcu} -c{protocol} {program.extra_params} "-Uflash:w:{runtime.platform.path}/bootloaders/{bootloader.file}:i" -Ulock:w:{bootloader.lock_bits}:m
+tools.avrdude.bootloader.pattern="{cmd.path}" "-C{config.path}" {bootloader.verbose} -p{build.mcu} -c{protocol} {program.extra_params} "-Ufuses:w:{runtime.platform.path}/fuses/{fuses.file}:r"
 
 tools.avrdude_remote.upload.pattern=/usr/bin/run-avrdude /tmp/sketch.hex {upload.verbose} -p{build.mcu}
 

platform.txt

@@ -1,6 +1,6 @@
-medbg.name=Atmel mEDBG
+medbg.name=Onboard Atmel mEDBG (UNO WiFi Rev2)
 medbg.communication=usb
-medbg.protocol=xplainedpro_updi
-medbg.program.protocol=xplainedpro_updi
+medbg.protocol=xplainedmini_updi
+medbg.program.protocol=xplainedmini_updi
 medbg.program.tool=avrdude
 medbg.program.extra_params=-Pusb