MicroPython Forum (Archive)

• Added native ESP32 VFS support, MicroPython's FatFS VFS is not used (it can still be selected via menuconfig).
  It is now very simple to work with files from C modules using standard file functions.
  Thanks to SHA2017 Badge Team https://github.com/SHA2017-badge/micropython-esp32 for initial support.
• New MicroPython configuration options added to menuconfig
• Xtensa toolchain and eps-idf directories (for both standard & psRAM build) added to make the build process even easier

• Added support for SPIFFS filesystem on internal spi Flash
• SPIFFS or FatFS can be selected via menuconfig
• SFPIFFS fs image file can be prepared on host and flashed to ESP32
• File systems functions updated, improved, some bugfixes
• MicroPython sources updated
• BUILD.sh script updated with new options

• Added support for connecting sd card in SPI mode
• works only with master esp-idf, psRAM esp-idf branch does not have the necessary support yet
• main advantage (the only one?) of connecting sd card in SPI mode is that the card can be attached to any ESP32 pins
• Sd card working mode (SD-1-line, SD-4-line, SPI) can be selected via menuconfig
• sdcard module initialization syntax is changed:

  Code: Select all

  import sdcard
  sd = sdcard.SDCard([chdir_to_sd_root])

  If the optional boolean parameter is True the working directory will be changed to sdcard root
• umount method is added

  Code: Select all

  >>> uos.listdir('/')
  ['flash']
  >>> sd = sdcard.SDCard()
  ---------------------
   Mode:  SD (4bit)
   Name: SL08G
   Type: SDHC/SDXC
  Speed: default speed (25 MHz)
   Size: 7580 MB
    CSD: ver=1, sector_size=512, capacity=15523840 read_bl_len=9
    SCR: sd_spec=2, bus_width=5
  
  >>> uos.listdir('/')
  ['flash', 'sd']
  >>> sd.umount()
  >>> uos.listdir('/')
  ['flash']
  

• Added ymodem module
• Send or receive files to/from host via same uart on which REPL runs
• Text or binary files (like images, encoded data, ...) of any size can be sent or received reliably
• Terminal emulator with support for ymodem protocol must be used (like minicom on Linux or TeraTerm, ExtraPuTTY on Windows)

>>> import ymodem, uos
>>>
>>> ymodem.recv('image1.bmp')

Receiving file, please start YModem transfer on host ...
(Press "a" to abort)
CCCC
File received, size=230456, original name: "tiger.bmp"

>>> uos.listdir()
['spiffs.info', 'lib', 'boot.py', 'yyy.txt', 'tiger240.jpg', 'tiger.jpg', 'image1.bmp']
>>> uos.stat('image1.bmp')
(32768, 0, 0, 0, 0, 0, 230456, 138, 138, 138)
>>>
>>> ymodem.send('image1.bmp')

Sending file, please start YModem receive on host ...
(Press "a" to abort)
CCC

Transfer complete, 230456 bytes sent
>>>

pythoncoder wrote:Is it not possible to use rshell for file transfer with the ESP32?

• Some changes needed to build with latest esp-idf commits
• Master esp-idf archive updated (for non-psRAM builds)
• improvements in _thread module
  • _thread.start_new_thread() now returns thread id which can be used in some methods
  • added methods suspend(th_id), resume(th_id), stop(th_id)
  • inter-thread notifications:
    • _thread.notify(th_id) send notification to the specific thread
    • _thread.getnotification() check if a notification received from within the thread
  • threads are tested with (relatively) complex modules like uftpserver and works wery well
• Updated uftpserver frozen module to quietly run in thread
• other small changes and bug fixes

>>>
paste mode; Ctrl-C to cancel, Ctrl-D to finish
=== import machine, _thread, time
===
=== bled    = machine.Pin(4, mode=machine.Pin.OUT)
=== gled    = machine.Pin(0, mode=machine.Pin.OUT)
=== rled    = machine.Pin(2, mode=machine.Pin.OUT)
===
=== bled.value(0)
=== gled.value(0)
=== rled.value(0)
===
===
=== def rgbleds(n, x):
===     ledon = 0
===     notif_exit = 4718
===     notif_print = 2
===     while x > 0:
===         if ledon == 0:
===             bled.value(1)
===             gled.value(0)
===             rled.value(0)
===         if ledon == 1:
===             gled.value(1)
===             bled.value(0)
===             rled.value(0)
===         if ledon == 2:
===             rled.value(1)
===             bled.value(0)
===             gled.value(0)
===         ledon = ledon + 1
===         if ledon > 2:
===             ledon = 0
===         time.sleep_ms(n)
===         x = x - 1
===
===         notif = _thread.getnotification()
===         if notif == notif_exit:
===             print("[rgbleds] Exiting")
===             return
===         elif notif == notif_print:
===             print("[rgbleds] I was notified")
===         elif notif != 0:
===             print("[rgbleds] Unknown notification %u" % (notif) )
===
===
=== lth=_thread.start_new_thread(rgbleds, (333,10000))
===
>>>
>>> _thread.notify(lth,7788)
True
>>> [rgbleds] Unknown notification 7788
_thread.notify(lth,2)
True
>>> [rgbleds] I was notified

>>> import uftpserver
>>> ftpth=_thread.start_new_thread(uftpserver.ftpserver, (3600,True))
Starting ftp server. Version 1.2
>>> FTPServer address:  192.168.0.21

>>> _thread.notify(ftpth,7788)
True
>>> [ftpserver] Notification 7788 unknown

>>> _thread.notify(ftpth,7591)
True
>>> [ftpserver] Received QUIT notification, exiting