Philips PCF 8591

[skimask]

OK, a bit more explanation.

I DO have the DEFINE I2C_SLOW 1 in my header,

Ah...and I thought for sure I had it.
But another idea hit me looking thru the code...
You've got the R/W set to 0, should be a 1 for a read and 0 for a write.
Maybe, maybe not. Seems like that's the way it is for the other eeprom's I use.

I'm a bit late on the refresh button I'm thinking! You guys already got it...

[Charles Linquis]

Check the PBP mqnual. PBP *AUTOMATICALLY* sets the LSbit to the
correct value. That is, the I2CREAD instruction FORCES the bit to "1"
and I2CWRITE FORCES it to "0". Try it in your code, and you will find
that it works.

[skimask]

Check the PBP mqnual. PBP *AUTOMATICALLY* sets the LSbit to the
correct value. That is, the I2CREAD instruction FORCES the bit to "1"
and I2CWRITE FORCES it to "0". Try it in your code, and you will find
that it works.

I know. I was jumping back and forth while typing in my last post, checking the datasheet for the PCF, the manual, I2C spec's, etc. I should've hit refresh before submit!

[sougata]

Hi,

Have you tried the DEFINE I2C_HOLD 1 in your prog ? Any difference using or not using it ?

[Charles Linquis]

Hi,

Have you tried the DEFINE I2C_HOLD 1 in your prog ? Any difference using or not using it ?

Yes, I tried that. No difference.

[sougata]

Hi,

There has been no update. Please do let us know if you succeed and how.

[Acetronics2]

Hi, Charles

Found a demo here ... :

Listing 2
' Nuts & Volts "Stamp Applications" -- November, 2001

... may be it will help

Alain