Electronic – Two slaves on the same I2C bus, both response to address check, one working properly but the other is not

Ok, I will try to keep it as short as possible.

I have a GY-86 breakout board, the schematic is added below. As seen, MPU6050 and BMP180 are connected on the same I2C bus.

I do also have an Arduino. So, master is Arduino and the slaves are MPU6050 and BMP180.

I have used a premade I2C scan sketch with my Arduino, and the output is:

13:50:00.731 -> Scanning...
13:50:00.731 -> I2C device found at address 0x68  !
13:50:00.764 -> I2C device found at address 0x77  !
13:50:00.797 -> done

This is fine, since 0x68 is MPU6050 and 0x77 is BMP180. So, both slaves respond to address check. However, while MPU6050 is fully functional, i.e I can get data from it, BMP180 is not responding. I have used several premade "get BMP180 data Arduino code" from the internet, and none of them worked.

I also have an STM32 MCU, when I use it as master insted of Arduino, same story happens. Despite using the same I2C read/write functions, MPU6050 readings/writings are totally fine, but I cannot write to or read from BMP180. By debugging, I found that AF(acknowledge failure) flag is set when the MCU stucks while trying to write/read BMP180.

I also examined datasheets of both sensors several times, they seem to have the same I2C read/write pattern.

In short, somehow, BMP180 is found on I2C line by the I2C scanner, but data read/write cannot be done. What could be the reason for that? I could assume I somehow dameged BMP180, but it replies to its address. So, I could not understand what is going on. Any idea would be appreciated.