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 Re: progamming PCF8574 Kategorie: Programmierung Basic (von Achim - 22.11.2004 15:27)
 Als Antwort auf progamming PCF8574 von rien an harmelen - 22.11.2004 12:10
> Please, who can help me to program a  PCF8574. What is wrong in the program given below.

What makes you think, there is something wrong? In other words: please describe what you do, what you observe then and what you'd expect instead.

> I like to turn a stepper connnected to P4-P7 (of the PCF8574) when a switch) connected to P3 is depressed. P0/P3 are connected with a pull-up to 5V . By pressing the switch P3 will be connected with a pull-up to 5 V

Shouldn't the switch connect P3 rather with 0V?

> please refer to [1]
> please refer to [1]
> please refer to [1]

> [1] Messen, Steueren, Regeln mit dem C-Control/BASIC System von Kainka (page 163 u.w.)

Do you expect everyone to own this book?

Bye
 Achim

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Bisherige Antworten:

Re: progamming PCF8574 (von rien an harmelen - 23.11.2004 9:25)
    Re: progamming PCF8574 (von Achim - 23.11.2004 11:07)
        Re: progamming PCF8574 (von rien an harmelen - 23.11.2004 17:33)
            Re: progamming PCF8574 (von Achim - 23.11.2004 18:04)