I2C kernel Error

Aashish Bhanawat12372

Other Parts Discussed in Thread: MSP430F2122

I am getting following kernel error when I am running a test program that communicate with MSP430 via i2c.

DaVinci I2C WARNING: i2c: cmd complete failed: complete = 0x0,
icstr = 0x1410

DaVinci I2C WARNING: i2c: AL detected
DaVinci I2C WARNING: i2c: AL detected
DaVinci I2C WARNING: i2c: AL detected
DaVinci I2C WARNING: i2c: AL detected

when I execute this test program next time, then i am getting following error:-

DaVinci I2C WARNING: timeout waiting for bus ready

I am using DM6446 and MSP430F2122.

How can i resolve this problem.

over 16 years ago

0 Joerg Quinten over 16 years ago

Guru 17650 points

Hi,

which software are you running in the MSP430 MCU (i.e. TI example code)? Since the DM6446 is a digital media processor wouldn't it be better to post this question in the related forum (http://e2e.ti.com/forums/default.aspx?GroupID=10) because I suspect the error message coming from the toolchain for DM6446 (which many of the MSP430 users do not know).

Rgds
aBUGSworstnightmare

0 Aashish Bhanawat12372 over 16 years ago in reply to Joerg Quinten

Prodigy 50 points

I am running ir test code (msp430lib).

0 Juan Gonzales over 16 years ago in reply to Joerg Quinten

TI__Mastermind 37340 points

I agree with aBUGSworstnightmare, a little more detail on the hardware platform (e.g. TI DM6446 EVM, third party EVM, your own board) and software w/ versions you are using will help.

0 Aashish Bhanawat12372 over 16 years ago in reply to Juan Gonzales

Prodigy 50 points

We are using our own board. version of msp430lib is 0.1

0 Aashish Bhanawat12372 over 16 years ago in reply to Aashish Bhanawat12372

Prodigy 50 points

On MCU side IR receiving and I2C slave code is running. For I2C we are using USCI_B0 i2c mode.

0 Juan Gonzales over 16 years ago in reply to Aashish Bhanawat12372

TI__Mastermind 37340 points

Normally, our software is developed to work on our EVM. I am not too familiar with MSP430s and therefore know little about MSP430lib or USCI_B0 i2c mode, but would recommend that you ensure this software works as expected on our board prior to moving to your proprietary board.

From a DM6446 EVM perspective, it does contain an MSP430 which is pre-flashed with the necessary software to do some basic IR among other things... the DVSDK software provided with DM6446 EVM does not include this MSP430 software, but it does include an i2c driver to allow DM6446 to talk to MSP430. If you have questions about usage of this I2C Linux driver, I can probrably help point you in the right direction. If you have questions about programming MSP430 software or tools, then you may want to post your questions under MSP430 forums (http://community.ti.com/forums/12.aspx )

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I2C kernel Error