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I2C_TRANSFER description is inaccurate #480

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tadziopazur opened this issue Aug 30, 2017 · 1 comment

tadziopazur commented Aug 30, 2017

The documentation for I2C_TRANSFER (include/tinyara/i2c.h) states:

Perform a sequence of I2C transfers, each transfer is started with a
START and the final transfer is completed with a STOP. Each sequence
will be an 'atomic' operation in the sense that any other I2C actions
will be serialized and pend until this read completes. Optional.

Since S5J implements it, it should follow the specification. This one doesn't.

Start/stop depends on sequence length/message length (it should not)
try_address does not care for HW errors (hsi2c_stop/hsic_start call hsi2c_wait_xfer_done and do not check the return value), result being multiple start/stop commands get issued

Contributor

rzr commented Nov 9, 2018

May relate to:
#322

sunghan-chang closed this as completed

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