arduino-esp32
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espressif
Enable PSRAM ECC function in build flags
Related area
PSRAM
Hardware specification
ESP32-S3 Wroom N8 & N16
Is your feature request related to a problem?
On Page 3 of the ESP32 s3 wroom documentation is mentioned that the max ambient temp can be raised to 85°C, if the "PSRAM ECC function" is enabled. How can it be in the build accomplished, that the ECC function is enabled? https://www.espressif.com/sites/default/files/documentation/esp32-s3-wroom-1_wroom-1u_datasheet_en.pdf
I found very few information about this function on esp32, but 65°C is very quickly reached if the board is exposed to the sun. Maybe the are the Fuses: EFUSE_FLASH_ECC_EN and EFUSE_FLASH_ECC_MODE
Many thanks in advance!
Describe the solution you'd like
set a build flag to enable ECC function on N8 and N16 variants
Describe alternatives you've considered
No response
Additional context
No response
I have checked existing list of Feature requests and the Contribution Guide
- [X] I confirm I have checked existing list of Feature requests and Contribution Guide.
This has to with PSRAM, not your regular flash, so the R number, not the N (or H). It also consumes 1/16 of your PSRAM for the ECC, and slows down every transaction. I don't think this should be a default setting. A more useful effort is to make the custom compilation process easier, as the Espressif team is doing
I agree with @lbernstone. This is also going to be made easier by #9270.
Thanks for fast response! I think the price you have to pay. Losing 1/16th of space and (also roughly 1/16th of the speed?) is a low price to pay, to gain such a huge bump in temperature stability imo) Especially for outdoor use or in car use. Even more in hot areas of the world.
Is there a way how I can activate this ECC function manually at the moment? I'm using platformIO.
@s54b32julian You'll probably need to re-generate the static libs for your target. Check https://docs.espressif.com/projects/arduino-esp32/en/latest/lib_builder.html
Regarding the e-fuses you can burn them using the esptool.
Have you tried setting your CPU speed to 80MHz? I rarely have temperature issues unless the cpu is overclocked.