Writing Singles type variables to EEPROM

MadMax

Can someone explain to me how conversions are performed by Bascom when writing a Single type value to EEPROM.

For example the decimal value 0.1 is stored in EEPROM as: CDCCCC3D

I can't figure out what the conversion is.
I'd like to write a VB program to read an EEPROM file, convert and display the decimal values.

I've searched the forums, but not had any luck finding an answer.

Any help would be greatly appreciated!

Best,
Max

ex4 · Joined: 13 Jan 2006 Posts: 1062 Location: indonesia

doing it is rather easy Very Happy

, first i'd like to ask :
do u use i2c eeprom or internal eeprom??
basically write or read any kind of variable in bascom is doing it byte by byte, not as the whole var. use overlay structure on single or any other var that contain more than 1 byte

MadMax · Posted: Tue May 08, 2007 1:42 pm Post subject:

Hi ex4,

I'm using internal EEPROM.

ex4 · Joined: 13 Jan 2006 Posts: 1062 Location: indonesia

btw, do u want to write/read eeprom using avr or do the write and read using vb with pc as the host???

MadMax · Posted: Tue May 08, 2007 2:05 pm Post subject:

I'm going to download the EEPROM from the Atmega128 using the AVRISP. Then just post process the .hex file using VB.

oe9vfj · Joined: 17 Jun 2004 Posts: 269 Location: Austria, Hard

BASCOM handles and stores floating point numbers (SINGLE, DOUBLE) in the format according to IEEE 754. Check http://en.wikipedia.org/wiki/IEEE_754