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I2C abort reason #1370

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I2C abort reason #1370

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Commits on Nov 11, 2024

  1. Make it possible to get i2c abort reason 

    Currently we're returning PICO_ERROR_GENERIC for an i2c abort such as
"No ack". Add a new PICO_ERROR_ABORT and use this if
PICO_I2C_RETURN_ABORT_REASON is true.

The abort reason comes from tx_abrt_source
(I2C_IC_TX_ABRT_SOURCE_ABRT_*_BITS) so take the zero count from
PICO_ERROR_ABORT, so the reason can be determined from the return code.

Fixes raspberrypi#1049
    @peterharperuk
    peterharperuk committed Nov 11, 2024
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