This repository was archived by the owner on Sep 6, 2023. It is now read-only.
This repository was archived by the owner on Sep 6, 2023. It is now read-only.
OSError: [Errno 2] ENOENT: main.py (solved) #90
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Description
Installed the latest micropython-esp32 on a new Wemos Lolin32 board.
On first boot, I noticed there was an ENOENT error:
>>>
PYB: soft reboot
OSError: [Errno 2] ENOENT
MicroPython v1.8.6-1089-g1365f7f-dirty on 2017-05-16; ESP32 module with ESP32
Type "help()" for more information.
I thought the issue may have been baud related, so I tried 115200, 230400, 460800 and 921600.
Tried importing _boot to re-setup the /flash, but kept getting "FAT filesystem appears to be corrupted."
Tried using a different machine and a few different usb cables too.
Then I tried manually creating the main.py file, and the problem went away.
After make erase and make deploy, there appears to be no main.py file in /flash.
Should there be an empty / placeholder file, like with boot.py?
>>> import os
>>> os.listdir()
['boot.py']
So, I created a main.py:
>>> f = open("main.py", "w")
>>> f.write("print(\"main.py: Hello\")\n")
24
>>> f.close()
>>> os.listdir()
['boot.py', 'main.py']
And on soft and/or hard reboot, no more ENOENT error!
>>>
PYB: soft reboot
main.py: Hello
MicroPython v1.8.6-1089-g1365f7f-dirty on 2017-05-16; ESP32 module with ESP32
Type "help()" for more information.
>>>
>>> ets Jun 8 2016 00:22:57
rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
ets Jun 8 2016 00:22:57
rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0x00
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0008,len:8
load:0x3fff0010,len:3132
ho 0 tail 12 room 4
load:0x40078000,len:7788
load:0x40080000,len:252
entry 0x40080034
I (1321) cpu_start: Pro cpu up.
I (1321) cpu_start: Single core mode
I (1322) heap_alloc_caps: Initializing. RAM available for dynamic allocation:
I (1335) heap_alloc_caps: At 3FFAE2A0 len 00001D60 (7 KiB): DRAM
I (1355) heap_alloc_caps: At 3FFD48C8 len 0000B738 (45 KiB): DRAM
I (1376) heap_alloc_caps: At 3FFE0440 len 00003BC0 (14 KiB): D/IRAM
I (1398) heap_alloc_caps: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM
I (1419) heap_alloc_caps: At 400998C8 len 00006738 (25 KiB): IRAM
I (1440) cpu_start: Pro cpu start user code
I (1501) cpu_start: Starting scheduler on PRO CPU.
main.py: Hello
MicroPython v1.8.6-1089-g1365f7f-dirty on 2017-05-16; ESP32 module with ESP32
Type "help()" for more information.
>>>
FYI, version is showing dirty as I modified the Makefile with:
ESPIDF = /Users/mike/esp/esp-idf
PORT = /dev/tty.SLAB_USBtoUART
BAUD = 230400
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