LookinG2

I'm sorry, I didn't mean to insult you. I ordered on Aliexpress the memory chips Winbond 25Q32BVSIG to upgrade the Sonoff Basic up to 4GB. But seller sent the chips marked SST25VF64C (8GB) and I was looking for a way to check the operation and the real memory size. ESP.getFlashChipRealSize() returns 2048 bytes and 'ESP8266 Sketch Data Upload' gives an 'out of memory' error.Therefore, I believe your method allows you to check the operation of the original chip with real characteristics. It's not good for my case. But I had already found a way to check the real size and it turned out that my chips were a relabeled fake with a real size of 4GB. I wrote a program using FS.h which creates a files of 100 kB in SPIFFS until it give an error "cannot create file". This shows the approxim…

I'm sorry, I didn't mean to insult you. I ordered on Aliexpress the memory chips Winbond 25Q32BVSIG to upgrade the Sonoff Basic up to 4GB. But seller sent the chips marked SST25VF64C (8GB) and I was looking for a way to check the operation and the real memory size. ESP.getFlashChipRealSize() returns 2048 bytes and 'ESP8266 Sketch Data Upload' gives an 'out of memory' error.Therefore, I believe your method allows you to check the operation of the original chip with real characteristics. It's not good for my case. But I had already found a way to check the real size and it turned out that my chips were a relabeled fake with a real size of 4GB. I wrote a program using FS.h which creates a files of 100 kB in SPIFFS until it give an error "cannot create file". This shows the approximate memory size. I'm sorry again, good luck.

Thanks for the advice. I already soldered and checked the chip at a frequency of 80MHz.It turned out to write 60 files of 100 kilobytes each and it seems I was wrong about a fake. This is normal 8 GB SST25VF064C with Chip ID 4B25BF as described in the Datasheet. I tested several other boards - on D1 mini 4GB recorded 26 files, on the D1 mini Pro 16GB recorded 129 files.

Useless for me. I expected to be able to check the actual size of the flash chip on my board. But Chip ID displays 2048 Bytes and ESP8266 Sketch data upload gives an error.

After 4-5-6 requests the program hangs on the loop: while( ! client.available())so, better to make exit by counter...