I'm writing some I2C code for someone using the hardware MSSP on a
18F242.
The following code works, but I'm not sure that it should.
Break should only short circuit a loop, in error I've coded it into an
IF statement that is inside a while loop - so whilst Break works for a
while loop, should it work when in an IF statement inside a loop?
Code below (note formatting may get mangled).
void I2C_hwStop()
{
BYTE timeout = 50;
SSPCON2 = SSPCON2 | (1<<PEN); // set stoP condition
//In case the slave device gets stuck, we need to have a way of
exiting.
//otherwise we are stuck here until the plug is pulled!
while (!(PIR1 & (1<<SSPIF)))
{
timeout --;
if (timeout == 0)
{
break;
}
}
PIR1 = PIR1 &~(1<<SSPIF); //clear completed flag
}
//end I2C_hwStop
Thanks
Colin
--
cdb, on 26/06/2009
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