(RTOS 1.4) Spiffs address alignment

[scottlangendyk]

I've been trying to figure out how to get spiffs working, and having a hard time. Looking through the source, I see that the SPI addresses are being aligned based on a FLASH_UNIT_SIZE declaration. Why is this?

[pratik]

Hello,

Flash devices may only allow access to word-boundary aligned addresses only. For this reason, flash accesses are aligned.
As for access to primary flash memory of ESP8266 - that definitely needs word-boundary aligned access because of the architecture of the ESP8266.