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SCroi1's avatar
SCroi1
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5 years ago

How to store user data necessary on the next power up

Hi, I have a MAX10 / NIOS II system with "Single Uncompressed image with memory initialization" configuration. During run time the system stores some data (512 bytes) that are needed at the next bo...
EricMunYew_C_Intel's avatar
EricMunYew_C_Intel
Icon for Frequent Contributor rankFrequent Contributor
5 years ago

Hi, Sorin


Have you tried command alt_write_flash_block() when you are writing to MAX10 UFM ?

alt_write_flash() erase any affected pages of UFM then write to memory, this may erase your old data. To ensure that data isn’t destroyed when using the alt_write_flash() function, it’s recommended to perform a read-modify-write operation on the flash memory. Meaning, you read the entire page of memory into a buffer in RAM, modify the buffer with the data you want to include, erase the entire page, and write the buffer back to flash.


You can refer to https://www.intel.com/content/dam/altera-www/global/en_US/uploads/7/78/Utilizing_User_Flash_Memory_Design_Guide.pdf


Thanks.


Eric