I2C using DMA - can't able to send more than a single byte

Prakash Balagangatharan

Other Parts Discussed in Thread: MSP430F5338

I am using MSP430F5338. I am trying to implement the i2c driver through DMA as per the codes available in the BSP. For the case of single byte the transmission is happened successfulyy. If i am trying to transfer more than single byte SCL line is getting low. I have verified all the hardware setup also. I have been trying to solve this issue for a week, not getting any clue. If anyone already faced such a kind of issue, please guide me.

Thanks in advance.I2C error.docx

over 10 years ago

0 Cameron LaFollette over 10 years ago

TI__Genius 14875 points

How is your i2c usci and DMA set up? Also, how are you triggering the transfer?

You may need to change the DMA to block transfer.

Cameron LaFollette

0 Cameron LaFollette over 10 years ago in reply to Cameron LaFollette

TI__Genius 14875 points

Also, can you clarify which example you're referring to? Perhaps share it in your post, or mention where you got it via a link, or mspware, or TIREX?

0 Prakash Balagangatharan over 10 years ago in reply to Cameron LaFollette

Expert 2440 points

solved, issue with the slave device.

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I2C using DMA - can't able to send more than a single byte