ESP32 Outputting Garbage in REPL
Port, board and/or hardware
esp32s3
MicroPython version
Hi I was using micropython on my esp32s3 and then it started outputting garbage. I really don't want this to happen to the device whilst it is running in production. What do you think the cause of this error is. Also is there any best practices in stopping this if it happens or preventative measures. All help is much appreciated.
<img width="1404" alt="Screenshot 2024-06-24 at 09 08 04" src="https://github.com/micropython/micropython/assets/34808802/debcbd8b-f668-4460-adfa-5713f5bdae11">
MicroPython 66af921a3 on 2024-04-13; ESP32S3 module (spiram octal) with ESP32S3
Reproduction
I am not fully sure this happened out of the blue a few times and I am not sure how to recreate it
Expected behaviour
No response
Observed behaviour
<img width="1404" alt="Screenshot 2024-06-24 at 09 08 04" src="https://github.com/micropython/micropython/assets/34808802/c896dd65-3a69-488e-833b-a333b42350f0">
Additional Information
No, I've provided everything above.
Code of Conduct
Yes, I agree
ESP32S3N16R8：Missing flash ORIGINALLY 16M , ACTUALLY 8M
Port, board and/or hardware
esp32s3N16R8 port
MicroPython version
MicroPython v1.25.0 on 2025-04-15; Generic ESP32S3 module with Octal-SPIRAM with ESP32S3
<img width="1075" height="667" alt="Image" src="https://github.com/user-attachments/assets/3ee7bfa2-4046-4e5e-abd8-e6382d9e62a7" />
Reproduction
In according to official guidance , open powershell echo：
esptool --baud 460800 write_flash 0 .\ESP32_GENERIC_S3-SPIRAM_OCT-20250415-v1.25.0.bin
click RST button，and open thonny，execute
import esp
import gc
print(esp.flash_size())
print(esp.flash_user_start())
print(gc.mem_free())
you will find a problem like result below.
- First line is flash size ,equals 8M，corresponds to rom
- Second Line is user partition start，I know，
ESP32_GENERIC_S3-SPIRAM_OCT-20250415-v1.25.0.binis 1.5M , from 2M maybe reasonable. - Third Line is mem_free, corresponds to ram .
8388608
2097152
8320080
Actually my board is N16R8, means 16M psrom and 8M psram. after using Micropython bin, I got 8M rom , and 8M ram ,where is 8M left from flash?
I chose OCT version bin due to 8M psram, but normal and OCT version both miss flash size. I don't know why and how i need to do or it's something being limited.
And thonny is also 6m，maybe 8M-2M?
<img width="1427" height="700" alt="Image" src="https://github.com/user-attachments/assets/0b63906e-d976-478f-82e7-b166ddc521f8" />
Expected behaviour
get missed 8m flash size for using
Observed behaviour
like above.
Additional Information
No, I've provided everything above.
Code of Conduct
Yes, I agree