HAL I2C Mem Read no longer working

[isaacseeto]

Hi,

I have been using Mem Read and Write for my project involving STM32 and ST25DV64K. These functions have been working for me previously but now they return HAL ERROR. I used to encounter this when I was inputting the wrong address but I have since corrected that. I have attached my current project and previously working project. 

1. What does HAL ERROR actually indicate? 

2. Why might these functions no longer work? 

Thanks. 

[Bob S]

You have the HAL source code.  Use your debugger and see where in the HAL functions the error comes from.

[Karl Yamashita]

Did you check with an oscilloscope to be sure you have data activity? 

[isaacseeto · Accepted solution]

Hi, I believe I fried the circuit because I soldered a new one and it functions correctly.

Thanks for the suggestions.