SMBus question

TC

Hello All,

Has anyone used SMBus with the Propeller? I know it is similar to I2C but not quite. What would be my best option on getting it to work with the Prop?

Thanks
TC

jazzed

Hi.

SMB is essentially a super-set of I2C.

The physical and link layers are identical IIRC.

Network protocol layers formalize error handling and transfer methodology like multiple byte read/write, etc....

What aspect of SMB do you need that I2C doesn't provide?

TC

jazzed wrote: »

Hi.

SMB is essentially a super-set of I2C.

The physical and link layers are identical IIRC.

Network protocol layers formalize error handling and transfer methodology like multiple byte read/write, etc....

What aspect of SMB do you need that I2C doesn't provide?

I just dont know anything about it (or I2C), and I was just wondering if anyone had some experience with it, and what method they used.

MagIO2

On the first glance it does not look too bad:
http://www.maximintegrated.com/app-notes/index.mvp/id/476

You could simply try it with an I2C driver.

If it does not work the timing diagrams in the SMBus specs and a COG recording the signals can help to find the problem.

TC

MagIO2 wrote: »

]
You could simply try it with an I2C driver.

If it does not work the timing diagrams in the SMBus specs and a COG recording the signals can help to find the problem.

I was thinking the same thing. I think I will just have to get the part, and see what happens. worst case, I will be back on here looking for help.

MagIO2

If you need some code for sampling signals, I just wrote a driver for 1-wire bus and had the need of such a recorder myself.

TC

MagIO2 wrote: »

If you need some code for sampling signals, I just wrote a driver for 1-wire bus and had the need of such a recorder myself.

I might just take you up on that offer after I get the chip. Thank You