Mikroelektronika MIKROE-350 Fiche De Données

program TWI_Simple

main:

DDRA = 0xFF              ' configure PORTA as output

TWI_Init(100000)         ' initialize TWI communication

TWI_Start()              ' issue TWI start signal

TWI_Write(0xA2)          ' send byte via TWI (device address + W)
TWI_Write(2)             ' send byte (address of EEPROM location)

TWI_Write(0xAA)          ' send data (data to be written)

TWI_Stop()               ' issue TWI stop signal

Delay_100ms()

TWI_Start()              ' issue TWI start signal

TWI_Write(0xA2)          ' send byte via TWI (device address + W)

TWI_Write(2)             ' send byte (data address)

TWI_Start()              ' issue TWI signal repeated start

TWI_Write(0xA3)          ' send byte (device address + R)

PORTA = TWI_Read(0)      ' read data (NO acknowledge)

TWI_Stop()               ' issue TWI stop signal}

end.

Interfacing 24c02 to AVR via TWI

468

- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6