HI2CStart

Syntax:

    HI2CStart

Command Availability:

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

Explanation:

If the HI2C routines are operating in Master mode, this command will send a start condition. If routines are in Slave mode, it will pause the program until a start condition is sent by the master. It should be placed at the start of every I2C transmission.

Note:

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

    HI2C2Start

Example:

    'Writes a single byte to a hardware I2C EEPROM at device address 0xA0, memory address 0x00
    HI2CStart          ' <<< the HI2CStart instruction
    HI2CSend 0xA0
    HI2CSend 0x00
    HI2CSend 0x55
    HI2CStop

Key line: HI2CStart — sends the start condition that every hardware I2C transmission must begin with, using the microcontroller’s built-in I2C/TWI module.

See Also:

  • HI2CSend / HI2CReceive — sending and receiving data after starting a transaction
  • HI2CStop — ending a transaction started with HI2CStart
  • HI2CRestart — repeating the start condition without stopping first
  • HI2CMode — selecting master or slave mode before starting

Supported in <HI2C.H>

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