Missing TXIS flag check for sending LSB byte of memory address in AT24Cxx

[eos1d3]

In both read and write functions for AT24Cxx, the LSB byte of memory address is sent without checking TXIS flag. I check STM30G1 reference manual, each byte transmission needs to ensure TXIS is set. No idea if other STM32 have small buffer to hold it.

Without the second TXIS flag, check, I tested reading and writing 44 bytes of string using STMG031, both work normally. But I think there is a potential to cause problem.

This happens only in AT24CXX with 16 bit memory address. The RTC uses 8 bit memory address and does not have this issue.

[sweesineng]

Sorry for late
reply and thanks for pointing out this. I review the HAL code again and saw there is TXIS check on both MSB and LSB address.
TXIS
Probably I cut shortcut and think it was redundant. I also tested this on STM32G030F6 and there is no issue. Anyway, I will adding back.