MicroPython Forum (Archive)

rcolistete wrote: ↑

Wed Aug 26, 2020 10:43 pm

ESP32 w/4mb, and a SparkFun ESP32 with 16mb

of RAM or flash ?

https://www.sparkfun.com/products/15663
The sparkFun says 16MB Flash and 520k internal SRAM.

And the other one shows 4MB (I'm assuming flash, but it's cheap generic one, so not completely sure)

aihrig wrote: ↑

Wed Aug 26, 2020 11:23 pm

rcolistete wrote: ↑

Wed Aug 26, 2020 10:43 pm

ESP32 w/4mb, and a SparkFun ESP32 with 16mb

of RAM or flash ?

https://www.sparkfun.com/products/15663
The sparkFun says 16MB Flash and 520k internal SRAM.

And the other one shows 4MB (I'm assuming flash, but it's cheap generic one, so not completely sure)

So there is no SPIRAM/PSRAM -> MicroPython shows 70-100 kB of free SRAM.

rcolistete wrote: ↑

Thu Aug 27, 2020 6:46 am

So there is no SPIRAM/PSRAM -> MicroPython shows 70-100 kB of free SRAM.

Ah, ok. Thanks - that makes sense now.

Thanks to all for the information.

Sharing some details to be searchable later and perhaps help someone:

"ESP32-CAM-MB Aideepen with OV2640 2MP Camera" is able to work with esp32spiram-20220618-v1.19.1.bin and show spiram:

>>> import micropython

micropython.mem_info()
stack: 736 out of 15360
GC: total: 4098240, used: 12832, free: 4085408
No. of 1-blocks: 298, 2-blocks: 37, max blk sz: 24, max free sz: 255327

>>> print(f"{gc.mem_free()/1024} k")
3987.969 k

>>> gc.mem_alloc() + gc.mem_free()
4098240

I am not successful using the actual camera yet, but for the price, it's still quite nice.