R45 MIPICSI2 BUFFOVF ERR

[evalin]

Dear,

We use R45 MIPI to receive data from other chip mipi, but now R45 will report a buffove error after receiving data for a period of time. The MIPI sending rate is 600M, and the R45 receiving rate is also 600M.

The R45 Reference manual describes buffovf errors as follows:

evalin_1-1729739919559.png

Under what circumstances will R45 CSI2 report this error?Thanks.

[petervlna]

Hello,

As manual express in the case that internal buffer is full.

Make sure you empty/transfer data before it is full and overflow happen.

Maybe your DMA or core triggered data transfer is too slow.

Best regards,

Peter

[linx]

Hi, Peter @petervlna 
    Now our team are using NXP S32R45 S32R45 , we encountered the same error too. We transmit ADC data to R45 CSI2 interface (sender is other chip). Sometimes the 0x80000 error code will persist.  ( ADC data from MIPI to SRAM, and then save to DDR memory, the ADC capture is always running "background"(2MB data in 12ms), also SPT processing is in foreground, intermediate data saved to

Any suggestions?

Thanks!