Why I2C interrupt occured even I had absorted the transfer?

[wengzhaojie]

Hello，I am using I2C on S32K148. IDE is S32DS ARM2.2(version:1.0.0.202001161613)

The flow is:
(1) start a I2C transder by calling  LPI2C_DRV_MasterSendDataBlocking, which is using DMA.
(2) transfer time out
(3) call: LPI2C_DRV_MasterAbortTransferData
(4) call: LPI2C_DRV_MasterDeinit
(5) the I2C dma transfer error interrupt（EDMA_DRV_ErrorIRQHandler） occured, and drop into the DEV_ASSERT for no available I2C instance.

Why did this happened? And how can I avoid this?

[danielmartynek]

Hi @wengzhaojie,

Please refer to the documentation of the driver.

The blocking transfer is completed when the function returns (with error or success status), there is nothing to abort.

LPI2C_DRV_MasterAbortTransferData() can be used for non-blocking transfers.

Regards,

Daniel