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LDmicro Forum - how to convert integer to byte and viceversa |
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how to convert integer to byte and viceversa (by simon)
Hi
I need to convert integer to byte to save on eeprom and convert byte to integer to read from eeprom . I need help Thank you
(no subject) (by Jonathan Westhues)
I'm not sure what you're trying to do. LDmicro supports a "make persistent" operation, which will cause a variable to be saved to EEPROM whenever it changes; but that operation already works on integer variables, so there's no need to do any conversion.
(no subject) (by simon)
Hi Jonathan
Thank you for response. I have a project that uses a diferent compiler , not using LDmicro ,and is imposible to save values bigger than 255 . I have no ideea how to save value bigger than 255 . I am using floating point and integer, and integer is bigger than 1023 . Thank you
(no subject) (by esa)
I use a EEPROM to save word in EEPROM
You must transfert in two byte to read and write the value. For Float, you must use 4 byte. Above, my sub routine Regards ERic int16 transfer (int16 data, int8 RW) { int8 datah,datal; datah=data/256; datal=data-256*datah; if (RW==LOAD_EEPROM) { datal=read_ext_eeprom(cellule); cellule++; datah=read_ext_eeprom(cellule); cellule++; } else { write_ext_eeprom(cellule,datal); cellule++; write_ext_eeprom(cellule,datah); cellule++; } data=datah*256+datal; return(data); }
(no subject) (by simon)
Thank you Esa . I will test your ideea.
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