i2c incorrectly reads UID?

[ABank]

Hi. I'm getting weird data when reading UID from ST25DV04K via i2c.

Tag id should be 0E 02 24 00 F3 DF 43 BD

When reading via i2c

HAL_I2C_Mem_Read( nfcI2c, ST25DV_Address_E21_read, UID_ADDRESS, 2, nfcUID, 8, 0xFFFFFF );

i'm getting 00 02 24 00 F3 DF 43 01 ( first and last byte are wrong )

When reading via i2c byte by byte

for( int k = 0; k < 8; k++ )
			HAL_I2C_Mem_Read( nfcI2c, ST25DV_Address_E21_read, UID_ADDRESS + k, 2, nfcUID + k, 1, 0xFFFFFF );

00 00 00 00 01 01 01 01

Tried 100k and 400k speeds.

Logic analyzer shows the same

 

Android app reads UID via RF correctly

[ABank · Accepted solution]

Found the problem - got 24AA02UID on the same i2c line - it takes multiple i2c addresses as it's own and conflicts with ST25DV04K