STMicroelectronics STM32F05 series - Figure 213. Transfer Sequence Flowchart for I2 C Master Transmitter for N<=255 Bytes

Inter-integrated circuit (I
2
C) interface RM0091
492/742 Doc ID 018940 Rev 1
Figure 213. Transfer sequence flowchart for I2C master transmitter for N<=255 bytes
MS19860V1
Master initialization
Master
transmission
Write I2Cx_TXDR
I2Cx_ISR.TXIS
=1?
No
Yes
I2Cx_ISR.NACKF
= 1?
Yes
No
NBYTES = N
AUTOEND = 0 for RESTART; 1 for STOP
Configure slave address
Set I2Cx_CR2.START
End
NBYTES
transmitted?
I2Cx_ISR.TC
= 1?
Yes
End
No
Yes
No
Set I2Cx_CR2.START
with slave addess
NBYTES ...