Hello Jason
On 11/21/2011 1:05 PM, Jason Hui wrote:
Hi, Ben, Jean,
I have one issue about the i2c failure: there will be on-going i2c
transfer while system get reset.
At the time when the reset happens, the slave may pull the SDA to
LOW.After reset, the i2c master may reset, but
the slave may still pull the SDA to LOW since there is no reset pin
for the slave device to do i2c reset, thus
result in the further i2c access failure forever unless we completely
power off the system by pulling out
the battery.
This is not the only solution for this. Master can accomplishes error
recovery by clocking Clock until Data is high and then issuing a Start
followed by a Stop.
Best Regards
Rajeev
...
I know we have the shutdown member function, but as I know there is
very less i2c master has implemented this
function correctly. I think we need take seriously about this issue,
do you have any comments? Thanks,
Jason Liu
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