CC2538: I2C sensor if broken stuck at while(I2CMasterBusy())

akshay b

Part Number: CC2538

Hello,

I am working on i2c communication between cc2538(master) & sensor(slave). the communication is working perfect.

But suppose if my i2c sensor is damaged and not communication then my i2c read/write operation gets in infinite while loop while(I2CMasterBusy());

Looking for a fix like i2c timeout.

Thank you,

Reagrds,

Akshay bansod

over 7 years ago

0 YiKai Chen over 7 years ago

Guru 735695 points

I suppose you can add a counter inside while loop to check if the counter is larger than a threshold to get rid of this issue.

0 akshay b over 7 years ago in reply to YiKai Chen

Expert 1400 points

which time counter will be best for this?

0 YiKai Chen over 7 years ago in reply to akshay b

Guru 735695 points

As I replied, using a incremental counter should work. You can refer to the following pseudo codes.
uint32 cnt=0;
uint32 cnt_threshold=50000;
while(I2CMasterBusy() && cnt<cnt_threshold) cnt++;

0 behold li over 7 years ago

Expert 2745 points

I have been encounter this problem,broken stuck at while(I2CMasterBusy()) if external I2c slave hardware damage.

0 SVS over 7 years ago in reply to behold li

TI__Genius 9705 points

Did you try the suggestion from YK Chen? I am closing this thread due to lack of activity for a while.

Please reopen if you are still facing this problem.

Regards,

Zigbee & Thread

Zigbee & Thread forum

CC2538: I2C sensor if broken stuck at while(I2CMasterBusy())