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Question about S32R274 SDMA Write Error

Question asked by Qinglong Shang on Sep 1, 2018
Latest reply on Sep 4, 2018 by Qinglong Shang

   Recently, I use the S32R274's SD ADC to sample the four channels analog signal, CTE to provide the SPT data acquisition block with the acquisition window signals. My SDMA configuration is as follows:

And I use the SPT WAIT Instruction to capture the SIGNAL of 'Chirp Acquisiton Done', and then some SPT Instruction will be executed to perform FFT operation.

   However, SDMA Error Status Register (SPT_DMA_ERR_STATUS) indicates that SDMA Write ERROR occurs occasional in this process. I studied the chip reference manual,but still don't understand what situation may cause this error, and what will happen after this error. Can you help me to solve this problem?

   Thanks a lot.

 

Martin KovarJiri KralKirk Humphries光荣 席Mandar Joshisdmas32r274

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