HI2CMode

Syntax:

    HI2CMode Master | Slave

Command Availability:

Only available for microcontrollers with the hardware I2C or TWI module.

Explanation:

HI2CMode sets the microcontroller to either a Master device or a Slave device. It is required before any other HI2C command is used, and is typically set once at the start of the program.

Note:

This command is also available on microcontrollers with a second hardware I2C port.

    HI2C2Mode Master | Slave

Example:

    #chip 16F1937, 32
    #define HI2C_DATA PORTC.4
    #define HI2C_CLOCK PORTC.3
    Dir HI2C_DATA in
    Dir HI2C_CLOCK in

    HI2CMode Master          ' <<< the HI2CMode instruction

    HI2CStart
    HI2CSend 0xA0
    HI2CStop

Key line: HI2CMode Master — configures the hardware I2C/TWI module to act as the bus master, before any HI2CStart, HI2CSend, or HI2CReceive calls are made.

See Also:

  • HI2CStart — starting a transaction after selecting the mode
  • HI2CSend / HI2CReceive — sending and receiving data in the selected mode
  • HI2CSetAddress — setting the device’s own address when in slave mode

Supported in <HI2C.H>

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