Mikroelektronika MIKROE-350 Fiche De Données

466

- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6

sub function TWI_Start() as byte

If there is no error function returns 0, otherwise returns 1.

Determines if TWI bus is free and issues START signal.

TWI must be configured before using this function. See TWI_Init.

if (TWI_Start = 1) 

...

sub function TWI_Read(dim ack as byte) as byte

Returns one byte from the slave.

Reads one byte from the slave, and sends not acknowledge signal if parameter
ack is 0, otherwise it sends acknowledge.

TWI must be configured before using this function. See TWI_Init.

Also, START signal needs to be issued in order to use this function. See
TWI_Start.

Read data and send not acknowledge signal:

tmp = TWI_Read(0)

sub procedure TWI_Write(dim data_ as byte)

Nothing.

Sends data byte (parameter data_) via TWI bus.

TWI must be configured before using this function. See TWI_Init.

Also, START signal needs to be issued in order to use this function. See
TWI_Start.

TWI_Write(0xA3)