hello, NXP:
when I use flexio which is configrated of DMA and I2C.
FLEXIO_I2C_DRV_MasterSendDataBlocking this function is always return with STATUS_I2C_RECEIVED_NACK.
when I use Oscilloscope test the I2C bus, the device address is send and receive OK , but the device address is sent twice.
However, when the FLEXIO i2c is set to interrupt mode , the communication is ok.
I don't know why. Could you give me some help?
Hi Omar/NXP, I've the same issue. I'm working with S32K144 and SDK 3.0.2. I've configured flexio I2C with S32DS to work with DMA. When I use FLEXIO_I2C_DRV_MasterSendDataBlocking, sometimes device address is sent twice. This issue appear wit communication set to 400Kb. If I reduce communication speed to 100 Kb issue disappear. Is this expected due to DMA timing limitation? Is this issue fixed into SDK 4.0.0?
Hello @qm1013 ,
Could you share the configurations used for the DMA channel?
Also, the new SDK release is the RTM 4.0.0 (using S32 Design Studio 3.3), this has a similar tool to processor expert called Config Tools that I will suggest to use.
Best Regards,
Alexis Andalon