I2C

" But i'm only testing with software-debugging and not with a real hardware."

So what did you mean in your original post when you said, "the signal function should simulate on the real controller pins" ??

" But i'm only testing with software-debugging and not with a real hardware."

So what did you mean in your original post when you said, "the signal function should simulate on the real controller pins" ??

Hello,
>>So what did you mean in your original post when you said, "the signal function should simulate on the real controller pins" ??

ok, it is my mistake. i have not posted clearly.
in fact i use only software-debugging with simulated software-pins.
and therefore i'm looking for a signal-function to simulate (one pin for data and one for clock) an i2c-eeprom like a real hardware.
To be sure: both, the controller-side and the pin-side are only simulated with software.

Thanks
Christian Tauschek

OK - so what, precisely, is the problem with the simulation that Keil provide?

Hello,
my problem is, that keil's application note 153 (simulating a device connected to the i2c-bus) only works with two VTReg's (I2C_IN, I2C_OUT).
it is no problem with a 87C591-controller.

but i'm using a 87C52-controller. my program works with two pins (SDA and SCL; port0.4 and 0.3) to communicate with the bus.
because of this fact, i have to utilize this both ports directly with a signal-function. i don't have VTReg's like I2C_IN and I2C_OUT available. if i had such VTReg's in connection with my controller, it would be easy.

thanks
Christian Tauschek