Atmel SAM4S-XPLD Atmel ATSAM4S-XPLD ATSAM4S-XPLD Hoja De Datos

Los códigos de productos

ATSAM4S-XPLD

655

SAM4S [DATASHEET]

11100E–ATARM–24-Jul-13

33.10.6 Read Write Flowcharts

The flowchart shown in

Figure 33-32 on page 655

gives an example of read and write operations in Slave mode. A

polling or interrupt method can be used to check the status bits. The interrupt method requires that the interrupt enable
register (TWI_IER) be configured first.

Figure 33-32.Read Write Flowchart in Slave Mode

Set the SLAVE mode:

SADR + MSDIS + SVEN

SVACC = 1

TXCOMP = 1

GACC = 1

Decoding of the

programming sequence

Prog seq

Change SADR

SVREAD = 0

Read Status Register

RXRDY= 0

Read TWI_RHR

TXRDY= 1

EOSACC = 1

Write in TWI_THR

END

GENERAL CALL TREATMENT