Atmel SAM4S Xplained Pro Starter Kit Atmel ATSAM4S-XSTK ATSAM4S-XSTK Hoja De Datos
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Los códigos de productos
ATSAM4S-XSTK
655
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
33.10.6 Read Write Flowcharts
The flowchart shown in
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.
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
OK
Change SADR
SVREAD = 0
Read Status Register
RXRDY= 0
Read TWI_RHR
TXRDY= 1
EOSACC = 1
Write in TWI_THR
END
GENERAL CALL TREATMENT
No
No
No
No
No
No
No
No