OSPI vs QSPI: How can I see what I have ?

[EmEiBee]

In connection with the new firmware 2.28 (https://github.com/esp32-si4732/ats-mini/releases/tag/v2.28), I'm wondering how a layperson can determine which ESP they have installed and which firmware type they need?

I assume one way will be to unscrew the receiver and take a look; I'll do that this evening.

But what options does a user have who doesn't want to open the receiver and/or doesn't have the knowledge to distinguish between the ESPs using this method?

[max-arnold]

Flashing both of the builds and looking which one results in a non-zero PSRAM amount on the Settings->About screen might be an option.

WARNING: for some people flashing a wrong firmware variant rendered their receiver unusable and required pressing BOOT & RESET buttons to recover it.

[max-arnold]

Another option (requires uvx) shows Embedded PSRAM 8MB on my device (8MB is only available via OSPI):

uvx esptool --chip esp32s3 --port /dev/cu.usbmodem14401 --baud 921600 flash-id

esptool v5.0.2
Connected to ESP32-S3 on /dev/ttyACM0:
Chip type:          ESP32-S3 (QFN56) (revision v0.2)
Features:           Wi-Fi, BT 5 (LE), Dual Core + LP Core, 240MHz, Embedded PSRAM 8MB (AP_3v3)
Crystal frequency:  40MHz
USB mode:           USB-Serial/JTAG
MAC:                30:ed:a0:bb:02:b4

Stub flasher running.
Changing baud rate to 921600...
Changed.

Flash Memory Information:
=========================
Manufacturer: 68
Device: 4018
Detected flash size: 16MB
Flash type set in eFuse: quad (4 data lines)
Flash voltage set by eFuse: 3.3V

Hard resetting via RTS pin...

[dbuggz]

esptool.py is in numerous packages. e.g. if you have ESP-IDF installed e.g.

/

C:\Espressif\frameworks\esp-idf-v5.4-4>esptool --port COM29  flash_id
esptool.py v4.8.1
Serial port COM29
Connecting...
Detecting chip type... ESP32-S3
Chip is ESP32-S3 (QFN56) (revision v0.2)
Features: WiFi, BLE, Embedded PSRAM 8MB (AP_3v3)
Crystal is 40MHz
MAC: fc:01:2c:d1:f6:88
Uploading stub...
Running stub...
Stub running...
Manufacturer: 68
Device: 4018
Detected flash size: 16MB
Flash type set in eFuse: quad (4 data lines)
Flash voltage set by eFuse to 3.3V
Hard resetting via RTS pin...

[EmEiBee]

Many thx.

So we have three options to tag the target:

• Open the device and check the ESP stamp.

• Try and error with both versions and check if the PSRAM =/= 0 in the info.

• External tool to query the information via the serial interface.

I think that's enough and may help other dummies like me to find the right way...

[faelana]

I used esptool to do this, on linux its usually available and its very simple and quick to do it.

[KmanOz]

Not sure what's going on but I have this version of the ESP

Flash Memory Information:

Manufacturer: 46
Device: 4018
Detected flash size: 16MB
Flash type set in eFuse: quad (4 data lines)
Flash voltage set by eFuse: 3.3V

If I flash with Q version of the firmware I do not see PSRAM. If I flash with O version of the firmware PSRAM value is correct.

If the firmware labeled correctly?