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ESP-01S with puy p25q80H flash chip a fake?
Posted:
Tue Nov 28, 2017 2:11 pmby chris153002
hi i recently bought some esp8266 esp-01s module on ebay with the p25q80h flash chip on them. the datasheet of the chip clams it is an 8 mbit chip. upon testing the flash chip seems to always corrupt the upper half of the flash memory, bottom half is ok. seems as if the chip is only 4 mbit disguised as an 8 mbit. anyways has anyone else encounter this? or know of a way to test the flash chip?
also
ESP.getFlashChipRealSize()
does return that it is an 8 mbit chip.
Re: ESP-01S with puy p25q80H flash chip a fake?
Posted:
Fri Dec 01, 2017 12:49 pmby Barnabybear
ESPs can only address 4M of SPI flsh.
Re: ESP-01S with puy p25q80H flash chip a fake?
Posted:
Fri Dec 01, 2017 1:14 pmby rudy
The data sheet says it is a 8Mbit (1M byte) chip. What size are you setting in the IDE?
Re: ESP-01S with puy p25q80H flash chip a fake?
Posted:
Thu Dec 07, 2017 5:04 pmby chris153002
The IDE set size is in fact 1MB.
The sketch itself reports 1MB as well.
the issue is that when saving files in the SPIFFS file system ( which saved to the end of the flash chip) upon reboot these files are corrupt.
now the sketch that is coming up as corrupt is running on these esp01s with the p25q80H flash chip.
the same exact sketch runs on other esp01s modules (that have different brand flash chips i.e. winbond , etc.) without a problem ( running file on about 25 modules, all 1MB models)
does anyone know of any esp8266 sketches that are setup to test the flash chips for back blocks, etc....