ST STM32F301 6 Series Reference Manual page 675

RM0366
Example I2C controller transmitter 2 bytes, automatic end mode (STOP)
NBYTES
INIT: program
EV1: TXIS ISR: wr data1
EV2: TXIS ISR: wr data2
Example I2C controller transmitter 2 bytes, software end mode (RESTART)
NBYTES
INIT: program
EV1: TXIS ISR: wr data1
EV2: TXIS ISR: wr data2
EV3: TC ISR: program
Figure 265. Transfer bus diagrams for I2C controller transmitter
TXIS TXIS
S Address A data1
INIT EV1 EV2
TXE
xx
target address, program NBYTES = 2, AUTOEND = 1, set START
TXIS TXIS
S Address A
INIT
EV1 EV2
TXE
xx
target address, program NBYTES = 2, AUTOEND = 0, set START
address, program NBYTES = N, set START
target
Inter-integrated circuit interface (I2C)
(mandatory events only)
A data2 A P
2
TC
data1 A data2 A
2
RM0366 Rev 5
legend:
ReS Address
EV3
transmission
reception
SCL stretch
legend:
transmission
reception
SCL stretch
MSv19862V3
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