Atmel Evaluation Kit AT91SAM9X25-EK AT91SAM9X25-EK データシート
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製品コード
AT91SAM9X25-EK
770
SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
38.10.6 Read Write Flowcharts
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 38-33.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
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