In SX Microcontrollers, SX/B Compiler and SX-Key Tool, peterverkaik wrote:

I corrected the arbitration tests also in Read:

Another dangerous construction is

  snb I2CM_NACK   ; Check for no acknowledge
  jmp @do_I2C_W   ; try again


(similar constructions also in Read:)

If for some reason an I2C slave does not acknowledge, your program enters

an infinite loop. You should really have a timeout on this. When you timeout,

and not lost arbitration, issue STOP sequence on I2C bus.

regards peter

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