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KSDK SDHC Driver assert(req) Issue

Question asked by Jared Evans on Jan 25, 2016
Latest reply on Feb 1, 2016 by Kan_Li

Hello all,


I have been doing some long term testing with SD card writes and have very rarely (every few days) had an issue within the SDHC_DRV_DataIrq function.

I am currently using the following:

  • K64-FRDM board
  • KDS 3.0.0 with processor expert enabled
  • KSDK 1.3
  • FatFS 0.09b
  • FreeRTOS 8.2

After writing data for some time correctly (only a few MB were written in my last test before the issue), I get the assert that the request pointer is NULL in SDHC_DRV_DataIrq of fsl_sdhc_driver.c. This has only happened a few times so I do not have that many details about the issue. Are there any known problems that can result in this error? Can anyone provide information about what may be causing this issue or guide me in some other tests to perform?