[−][src]Function i2c_hung_fix::try_unhang_i2c

pub fn try_unhang_i2c<C, A, D, E>(
    scl: &mut C, 
    sda: &A, 
    delay: &mut D, 
    i2c_frequency: u32, 
    max_clock_cycles: u8
) -> Result<Sucess, Error<E>> where
    C: OutputPin<Error = E>,
    A: InputPin<Error = E>,
    D: DelayUs<u32>, 

This function applies the software based hung bus fix described the the lib doc

Arguments

  • scl - the clock pin. Must implement OutputPin trait
  • sda - the data pin. Must implement InputPin trait
  • delay - mutable reference to a struct that can perform blocking nano second delays. Must implement DelayUs trait
  • i2c_frequency - the frequency the I2C bus should be clocked at in Hertz. Can use FALLBACK_I2C_FREQUENCY if the frequency is unknown but getting the right frequency for the slave is preferable
  • max_clock_cycles - the maxiumum number of times the clock will be cycled high->low->high before giving up and returning Error::StillHung. RECOMMENDED_MAX_CLOCK_CYCLES is a reasonable default value but this can be increased for misbehaving slaves devices