Posted on August 24, 2013 at 12:05Hello,
I'm trying to make the STM32L152 I2C communication failure-proof against glitches/short-circuits. There's an API command I2C_SoftwareResetCmd which seems to be the cure, but i can't find any proper example or manual of how to use it. I tried this way:
1. Detect timeout of any flag/event checking loop.
2. SW reset enable
3. Clear all I2C flags
3. SW reset disable.
But this doesn't have any effect.
When i deliberately short-circuit SCL or SDA then they go high after short-circuit so bus seems to be ok and there shouldn't be a need for ''clocking out''. Yet, the I2C_GenerateSTART does not work after short-circuit and recovery method i use.
Does anybody know the proper way (other than re-initalizing the peripheral completely) ?
#stm32l152-i2c-recovery
