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i2cackpollstate

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Anobium edited this page Oct 18, 2020 · 1 revision

I2CAckPollState

Syntax:

 <test condition> I2CAckPollState

Command Availability:

Available on all microcontrollers except 12 bit instruction Microchip PIC microcontrollers (10F, 12F5xx, 16F5xx chips)

Explanation:

Should only be used when I2C routines are operating in Master mode, this command will return the last state of the acknowledge response from a specific I2C device on the I2C bus.

I2CACKPOLL sets the state of variable I2CAckPollState. I2CAckPollState can only read - it cannot be set.

Example:

    ...
    ' ACK polling removes the need to for the 24xxxxx device to have a 5ms
    write time
    I2CACKPOLL( eeprom_device )
    ' You check the exit state,
    ' Use I2CAckPollState to check the state of a target device
     ...

Supported in <I2C.H>

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