I2C-driver callable from ASM?

Nick Mueller

Hi!

I need to call I2C from assembler (and SPIN). And I need to make sure that more than one cog can safely access I2C (EEPROM and an ADC).
Now I could use the I2C-driver from Parallax (it's almost written in ASM) and write a wrapper around it (in ASM) that does handle the concurrent access. Communication would have to happen via HUB-RAM (status and scratch-area for block read/write).
But maybe someone has done that already?


Nick

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Never use force, just go for a bigger hammer!

The DIY Digital-Readout for mills, lathes etc.:
YADRO

Nick Mueller

> Now I could use the I2C-driver from Parallax (it's almost written in ASM)

Did I dream that? Can't find it anymore.
Does any I2C-driver in ASM exist?


Nick

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Never use force, just go for a bigger hammer!

The DIY Digital-Readout for mills, lathes etc.:
YADRO

Rayman

I think I saw one by Mike Green somewhere... Maybe in FemtoBasic?

Fred Hawkins

rayman, it's searchable as Basic_i2c_driver.spin, and yes, it's written by Mike.

But simpler still is the item in object exchange: http://obex.parallax.com/objects/26/

Nick Mueller

> it's searchable as Basic_i2c_driver.spin,

But it's written in Spin. Doesn't help me. :-(

Nick

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Never use force, just go for a bigger hammer!

The DIY Digital-Readout for mills, lathes etc.:
YADRO

Nick Mueller

> I think I saw one by Mike Green somewhere... Maybe in FemtoBasic?

Right! It's there. In the file "sdspiFemto.spin

Thx!
Nick

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Never use force, just go for a bigger hammer!

The DIY Digital-Readout for mills, lathes etc.:
YADRO