TWI <---> Soft-I2C

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robert

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Re: TWI <---> Soft-I2C

· Posted: 07.10.2010 - 15:06 · #9

Creepy, we are using it in several applications and it seems to work...

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Re: TWI <---> Soft-I2C

· Posted: 07.10.2010 - 18:07 · #10

Hello Robert,

Soft-I2C or TWI, which AVR? But there is also a LM75 which works, I think.

rolf

robert

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Re: TWI <---> Soft-I2C

· Posted: 08.10.2010 - 06:29 · #11

Hello Rolf,
we are using TWI with Mega2560.

Robert

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Re: TWI <---> Soft-I2C

· Posted: 08.10.2010 - 07:03 · #12

Just to add one more I2C part, that does not work with TWI: STDS75M
It is a LM75 'drop in' replacement, which temperature readings are more precise and stable.

LM75 before worked fine with TWI, putting in STDS75M the application hung. Switching to Soft I2C solved the problem. (ATMega 2561)

Michael

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Re: TWI <---> Soft-I2C

· Posted: 08.10.2010 - 16:32 · #13

@all,

the STDS75M is an enhanced LM75. The STDS75M is exactly the same as the LM76. Result:
LM75 is ok with TWI
LM76 is not ok with TWI
STDS75M is not ok with TWI

With XMega TWI there is no problem at all (until now).

rolf

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