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New Contributor

2 years ago

Solved

QSPI read write

Hello. I am writing and reading to a Infineon S25FL512S memory with alt_qspi_write and alt_qspi_read. I write a small block of data and gets this result Write: 0x87654321 0x87654321 Read 0x7258...

Hps Debug

aikeu
2 years ago
Hi Oaksys,

Not sure will this help which relates to the dummy cycles, It mentioned that "Third-party quad SPI flash devices may have fixed or configurable dummy clock cycle":
https://www.intel.com/content/www/us/en/docs/programmable/683271/current/understanding-dummy-clock-cycles-for.html

Anyway I will close and transition the thread to community support since the issue has been resolved.

Thanks.
Regards,
Aik Eu

Oaksys

New Contributor

2 years ago

Sorry for the vague error description. I found the issue in the hwlib file alt_qspi.c. After changing the read_dummy_cycles for the S25FL512S memory from 7 to 6 everything is working fine. If anyone has a good explanation why this hack works for my setup I will be thankful.

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QSPI read write

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