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iMX1050 problems with programming flash

Question asked by Lutz Volkmann on Jan 6, 2020
Latest reply on Jan 13, 2020 by Lutz Volkmann

our target application shall have the following functionality:

  • booting from Flash
  • running from RAM
  • updating itself via USB

The first two points are working so far with the eval board.
When trying to programming the flash I run into trouble.
As a first step I've tried the code sequence from flexspi_hyper_flash_polling_transfer.c.
It run until  function flexspi_nor_write_enable.
This returns with kFLEXSPI_IpCommandSequenceErrorFlag error in FLEXSPI_TransferBlocking(FLEXSPI_CheckAndClearError).
Can anyone spot me what I do wrong ?