AM2634: facing issue in i2c read and i2c write

Gopala Lakshmana Swamy Tummala

Part Number: AM2634

HI,

i'm facing issue in i2c write and read, using i2c for rtc, while reading and writing through i2c my code is stopping in 4 places. can anyone explain ,how it can be resolved.

2 months ago

0 Shaunak Deshpande 2 months ago

TI__Mastermind 22062 points

Hi,

Please elaborate. The question only mentions "4 places". What are the 4 places? Are they Timeouts? Is this a custom board and your custom software or TI board and TI SDK drivers? If TI SDK, what is the version of SDK being used?

Regards,
Shaunak

0 Gopala Lakshmana Swamy Tummala 2 months ago in reply to Shaunak Deshpande

Prodigy 30 points

Hi,

These I²C transaction timeouts are from the i2c_lld file in my custom board software. The drivers were originally taken from SDK version 9.2. I set the transaction timeout to 1000, and I added variables like timeout and timeout1 so the code can break out of the loop after 255 iterations in case it gets stuck inside those loops. when i do this my read and write is failing.

Regards,

Gopala

0 Shaunak Deshpande 2 months ago in reply to Gopala Lakshmana Swamy Tummala

TI__Mastermind 22062 points

Hi Gopala,

Are the errors consistent with every run or random or periodic? Also, are we sure if the RTC module is responding and not holding the bus busy? The AM263x I2C drivers don't have clock stretching support in-case the interfaced RTC needs it.

Regards,
Shaunak

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AM2634: facing issue in i2c read and i2c write