I2CAckpoll

Syntax:

	I2CAckpoll ( I2C_device_address )

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 look for a specific I2C device on the I2C bus.

This sets a global variable I2CAckPollState that can be inspected in your calling routine.

Example:

	 ...
	' ACK polling removes the need to for the 24xxxxx device to have a 5ms write time
	I2CACKPOLL( eeprom_device )          ' <<< the I2CAckpoll instruction
	' You check the exit state, use I2CAckPollState to check the state of
	' the acknowledge from the target device
	 ...

Key line: I2CACKPOLL( eeprom_device ) — repeatedly addresses eeprom_device on the bus, letting the caller poll I2CAckPollState until the device acknowledges, instead of waiting a fixed delay for its write cycle to finish.

Supported in <I2C.H>

See Also:

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