Long startup time on ESP32-S2

[deshipu]

CircuitPython version

7.3.1

Code/REPL

import board
import digitalio

led = digitalio.DigitalInOut(board.LED)
led.switch_to_output(value=1)

while True:
    pass

Behavior

The LED comes on after 2.45s from connecting power or pressing RST button.

Description

This seems about twice as long as expected, with the safe mode delay being about 1s, and without an UF2 bootloader on the board.

Additional information

No response

[dhalbert]

Per @deshipu, this test was done with a UM FeatherS2 Neo. Let's test how it compares with 6.x as well.

[tannewt]

I suspect this may be due to large RAM sizes. I'd be curious to see the timing output in the ESP-IDF debug output.

[dhalbert]

There is an sdkconfig setting CONFIG_SPIRAM_MEMTEST=y which does an SPI RAM test on startup. Is this what you are thinking of?

[DJDevon3]

@deshipu can revisit and retest this one on UM FeatherS2 on 8.0.5 stable (most recent). I'm not seeing this issue anymore on my UM FeatherS2.

[dhalbert]

Closing as apparently fixed.