i2c_scanner does not work on olimexino_stm32

[boonpin1975]

building the i2c_scanner on olimexino_stm32 , with the sht3xd sensor connected to i2c1 , I keep getting this error when running i2c_scanner

[00:00:00.051,000] i2c_ll_stm32_v1.msg_end: stm32_i2c_msg_write: NACK

is there need extra kernel config when using the i2c API in stm32 ?

Starting i2c scanner...

 0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f

00: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

0 devices found on I2C_1
prj.conf
CONFIG_I2C=y
CONFIG_LOG=y
CONFIG_STDOUT_CONSOLE=y
CONFIG_PRINTK=y
CONFIG_I2C_LOG_LEVEL_DBG=y

[boonpin1975]

I have tested another eeprom , at24c02 , address is 0x50 , but there is nothing in the i2c_scanner console .

[erwango]

Cf #20325:
"
[...] the test doesn't work because the ST I2C driver doesn't handle the SMBUS command that's used to detect a NAK on the address for an absent subordinate device. It reports all addresses as being associated with devices."

Moving this to enhancement.

[pabigot]

#20560 fixed the I2C scanner on STM32, so if this is reproducible there's something else going on. Possibly scanning the wrong I2C bus.

[nashif]

please file a bug if this still occurs.