Gap between two buffers in SCLK I2S

[Mohit_Manvar]

Hello,

I'm using S32K142 controller for I2S communication.

I configured I2S through SDK drivers and sending audio buffer continously.

below is  screenshot in which we are facing gap in SCLK and due to that other clocks are being disturbed.

configuration:

using following function to send data in infinite loop.

uint8_t I2S_DataBuff_u8[] = {0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA};

FLEXIO_I2S_DRV_MasterSendData(&I2SMasterState, I2S_DataBuff_u8, 32U);

please share solution , how can I continuous send data.

Regards,

Mohit

[danielmartynek]

Hello @Mohit_Manvar,

It has been discussed here:

https://community.nxp.com/t5/S32K-Knowledge-Base/S32K3-FlexIO-I2S-Continuous-Transfer/ta-p/1692165

Unfortunately, we don't have such an example built with the SDK, but in principle, it is the same.

A baremetal example is attached.

Regards,

Daniel

[Mohit_Manvar]

Hi @danielmartynek ,

Thanks for sharing bare metal code.
I tried to import code and build but it is not building successfully. error is attached below.

additionally if Build for release it is building successfully.I tried to check issue for debug_flash mode but following issue it there

so I tried with S32Ds for ARM IDE but having same problem.

please share details how can I remove error.

Regards,
Mohit Manvar

[danielmartynek]

Hi Mohit,

In S32DS 3.5, create a new project (without SDK) and copy the cource code from the example.

It should work this way.

Regards,

Daniel

[Mohit_Manvar]

yes,It is now building.

but during executing code , it is automatically going to Default ISR from below line.

I'm using S32K144 EVB for debugging.

[danielmartynek]

Hi @Mohit_Manvar,

I haven't had the time to test it.

Is it fault exception?

Please implement HardFault_Handler() in the project.

https://community.nxp.com/t5/S32K-Knowledge-Base/Fault-handling-on-S32K14x/ta-p/1114447

Regards,

Daniel

[Mohit_Manvar]

Hello,

I tried to check causing of fault and I got this.

please briefly explain where should I call fault handler in code and how can I use it?
if possible please configure at your side and revert me back.

Mohit

[Mohit_Manvar]

Hello experts,

please help out to resolve this open topic.

Best regards,

Mohit

[danielmartynek]

Hi @Mohit_Manvar,

I'm sorry for the delay. I see now that the project has been built for the first maskset of S32K144 where DMA clock could be gated in PCC[CGC]. This was removed on the current version of the MCU.

Just comment this line out:

// PCC->PCCn[PCC_DMA0_INDEX] |= PCC_PCCn_CGC_MASK;

Regards,

Daniel

[Mohit_Manvar]

Hello,

I tried to comment out that line but at the end it is not giving output for I2S.

Does any other modifications needed?

output pins:

please suggest your thoughts.

Mohit

[danielmartynek]

Hi @Mohit_Manvar,

Unfortunately, we don't have the capacity to port and debug every example right now.

The examples are provided AS IS.

Regards,

Daniel