Fails to detect Flash size for ESP32-C5 DevkitC-1 N8R4, but esptool detects successfully.

[tyeth]

Checklist

• Checked the issue tracker for similar issues to ensure this is not a duplicate
• Read the documentation to confirm the issue is not addressed there and your configuration is set correctly
• Tested with the latest version to ensure the issue hasn't been fixed

How often does this bug occurs?

always

Expected behavior

Expected to detect an 8MB flash size.

Actual behavior (suspected bug)

Fails to detect flash size / communicate with flash chip.

Error logs or terminal output

esptool.js
Serial port WebSerial VendorID 0x10c4 ProductID 0xea60
Connecting...
Chip Magic: 0x5fd1406f
Detecting chip type... ESP32-C5
Chip is ESP32-C5 (revision v1.0)
Features: Wi-Fi 6 (dual-band),BT 5 (LE),IEEE802.15.4,Single Core + LP Core,240MHz
Crystal is 48MHz
MAC: 30:ed:a0:e4:2b:1c
Uploading stub...
Running stub...
Stub running...
Flash ID: 0
WARNING: Failed to communicate with the flash chip,
                                                   read/write operations will fail.
                                                                                   Try checking the chip connections or removing
        any other hardware connected to IOs.
Configuring flash size...
Could not auto-detect Flash size. defaulting detect
Detected flash size set to 4MB

Steps to reproduce the behavior

Connect official C5 devkit, 8mb flash 4mb psram (WROOM-1).
Notice message about failing to detect flash size, and that read/writes may fail.

Project release version

latest

System architecture

Intel/AMD 64-bit (modern PC, older Mac)

Operating system

Windows

Operating system version

11

Shell

PowerShell

Additional context

Running esptool locally with the flash-id command does show the flash size correctly.

 esptool flash-id
esptool v5.1.0
Connected to ESP32-C5 on COM82:
Chip type:          ESP32-C5 (revision v1.0)
Features:           Wi-Fi 6 (dual-band), BT 5 (LE), IEEE802.15.4, Single Core + LP Core, 240MHz
Crystal frequency:  48MHz
MAC:                30:ed:a0:ff:fe:e4:2b:1c
BASE MAC:           30:ed:a0:e4:2b:1c
MAC_EXT:            ff:fe

Stub flasher running.

Flash Memory Information:
=========================
Manufacturer: 20
Device: 4017
Detected flash size: 8MB

Hard resetting via RTS pin...

[TD-er]

Just as a side-question...
Does the web flasher allow to flash an ESP32-C5 at all with your board?
I was not able to flash it with none of the web flasher variants out there. Not even with the Tasmota variant, the version I'm using (for ESPEasy) and also not with the ESPHome flasher.

With the demo version of this repo I get the same as you reported:

esptool.js
Serial port WebSerial VendorID 0x10c4 ProductID 0xea60
Connecting...
Detecting chip type... ESP32-C5
Chip is ESP32-C5 (revision v1.0)
Features: Wi-Fi 6 (dual-band),BT 5 (LE)
Crystal is 48MHz
MAC: 30:ed:a0:e4:23:24
Uploading stub...
Running stub...
Stub running...
Flash ID: 0
WARNING: Failed to communicate with the flash chip,
                                                   read/write operations will fail.
                                                                                   Try checking the chip connections or removing
        any other hardware connected to IOs.
Configuring flash size...
Could not auto-detect Flash size. defaulting detect
Detected flash size set to 4MB

And I also have an 8MB flash board. One of the first boards sold by Espressif via AliExpress.

By the way, the reported flash vendor and device ID from within Arduino are: Vendor: 0x20 Device: 0x4017

[tyeth]

Try 115200, and I have the espressif 8MB flash 4mb psram devkitc-1 board (N8R4).
It failed to connect the first time and was fine the second (CP2102N serial adapter usb port).
Read partition table, read flash data, wrote flash data. Using https://tyeth.github.io/read-partitions-esptool-js/pr/4-770920e/

Serial port WebSerial VendorID 0x10c4 ProductID 0xea60
Connecting...
Chip Magic: 0x5fd1406f
Detecting chip type... ESP32-C5
Chip is ESP32-C5 (revision v1.0)
Features: Wi-Fi 6 (dual-band),BT 5 (LE),IEEE802.15.4,Single Core + LP Core,240MHz
Crystal is 48MHz
MAC: 30:ed:a0:e4:2b:1c
Uploading stub...
Running stub...
Stub running...
Flash ID: 0
WARNING: Failed to communicate with the flash chip,
                                                   read/write operations will fail.
                                                                                   Try checking the chip connections or removing
        any other hardware connected to IOs.
Configuring flash size...
Could not auto-detect Flash size. defaulting detect
Detected flash size set to 4MB

==== Clicked Read Partition table =======

Extracted partition table from 0x8000
# ESP-IDF Partition Table
# Name, Type, SubType, Offset, Size, Flags
nvs,data,nvs,0x9000,0x5000,,
otadata,data,ota,0xe000,0x2000,,
app0,app,,0x10000,0x1e0000,,
app1,app,,0x1f0000,0x1e0000,,
spiffs,data,spiffs,0x3d0000,0x20000,,
coredump,data,coredump,0x3f0000,0x10000,,

====== Clicked download button for SPIFFS partition (in Action column) =======

Downloading partition/row: spiffs,data,spiffs,0x3d0000,0x20000,,
0%..10%..20%..30%..40%..50%...60%..70%..80%..90%..100%
                                                      Done fetching data, generating download...
Download triggered for spiffs,data,spiffs,0x3d0000,0x20000,,

===== Clicked Program Flash after selecting a file and setting offset to 0x3d0000 ========

Compressed 131072 bytes to 573...
Writing at 0x3d0000... (100%)
Wrote 131072 bytes (573 compressed) at 0x3d0000 in 0.475 seconds.
Hash of data verified.
Leaving...
Hard resetting via RTS pin...

I verified the modified credentials partition took effect.

[brianignacio5]

Maybe this is also fixed after #226 and #228 ? There is also #232 to update esp32c5 stubs