> My description seems to be a little misleading. > WITHOUT the force_reinit() my SPI driver reports transmission errors if the > I2C bus has longer disturbances. > WITH the force_reinit() my SPI driver works fine. > This sounds like the I2C allocates a new buffer for every timed-out > transmision. If all I2C buffers are full, the SPI buffers get overwritten > !? > I did not really trace back the problem, this is only my suspicion. > Because the force_reinit() resets all the buffer pointer to their init > values the problem with the SPI does not occur. > > Cajus
I think the problem is that the CPM is still waiting on the SCL long after the timeout has happen. A complete reinit will reset the I2C part of the CPM. I think you should be able to get away with less, maybe it will enough to disable I2C (i2c->i2c_i2mod &= ~1) and/or clear internal state (iip->iic_rstate = 0; iip->iic_tstate = 0;) after a timeout? Jocke
