hi2cin command

[Stéphane]

Does anybody know the difference between the "new" hi2cin command and the "old" readi2c command ?

Thanks,

Stéphane

 

[leftyretro]

Does anybody know the difference between the "new" hi2cin command and the "old" readi2c command ?

Thanks,

Stéphane

I believe the difference is that the new Hi2cin command utilizes the built in PIC I2C hardware that is available only on the 28X1 and 40X1 presently. The old readi2c is a software only routine that does not require any special hardware assistance from the PIC chip.

Make sense?

Lefty

 

[BCJKiwi]

Basically the i2cslave/readi2c/writei2c is for the X parts (18X and above) whereas the hi2csetup/hi2cin/hi2cout are for the X1 parts (28X1 and above).

If you have the X1 parts use the 'h' commands. The 'h' commands are more efficient as the 'h' is for hardware as the X1 parts do more of the work in dedicated hardware (when using the 'h' commands) than the non 'h' commands.
Have only used the 'h' commands myself but the syntax and command structures would appear to involve a similar amount of programming work so there is no reason not to use the 'h' commands unless you are using an 'X' part.

 

[xnederlandx]

hi2cin / hi2cout can also operate at faster speeds (100khz, 400khz,1Mhz)

 

[Stéphane]

Thanks very much for this excellent explanations !

Stéphane