Commit Graph

15 Commits

Author SHA1 Message Date
Jeff Epler 28043c94b5 supervisor: Improve serial connection detection
These changes remove the caveat from supervisor.runtime.serial_connected.

It appears that _tud_cdc_connected() only tracks explicit changes to the
"DTR" bit, which leads to disconnects not being registered.

Instead:
 * when line state is changed explicitly, track the dtr value in
   _serial_connected
 * when the USB bus is suspended, set _serial_connected to False

Testing performed (using sam e54 xplained):  Run a program to show
the state of `serial_connected` on the LED:
```
import digitalio
import supervisor
import board

led = digitalio.DigitalInOut(board.LED)
while True:
    led.switch_to_output(not supervisor.runtime.serial_connected)
```

Try all the following:
 * open, close serial terminal program
    - LED status tracks whether terminal is open
 * turn on/off data lines using the switchable charge-only cable
    - LED turns off when switch is in "charger" position
    - LED turns back on when switch is in Data position and terminal is
      opened (but doesn't turn back on just because switch position is
      changed)
2020-09-17 18:32:06 -05:00
Taku Fukada d356581651 Fix several type hints 2020-07-27 18:05:13 +09:00
dherrada d358c915c3 Fixed init formatting 2020-07-03 14:00:06 -04:00
dherrada 3df03a5650 Made most of the requested changes 2020-07-03 13:49:00 -04:00
dherrada 54cb1feea0 Removed all 'self, )' 2020-07-02 13:28:36 -04:00
Scott Shawcroft 4e8de3c554
Swap sphinx to autoapi and the inline stubs 2020-05-12 17:28:24 -07:00
dherrada 991045b9ce
Did struct, supervisor, terminalio 2020-05-12 11:28:33 -04:00
Dan Halbert b6b5ed9c89 Remove nRF52832 support 2018-12-30 22:49:20 -05:00
Scott Shawcroft 0688709c4f
Move the docs next to the implementation 2018-10-09 23:15:25 -07:00
ATMakersBill 05d4b8cf50 Added Documentation for the serial_bytes_available attribute 2018-10-09 22:50:59 -04:00
ATMakersBill 9f94712ad1 replacing change to input() with separate method to check for USB Serial input 2018-10-09 18:37:52 -04:00
sommersoft d1974e0038 supervisor/Runtime: updated documentation for 'no disconnect' 2018-04-06 01:56:51 +00:00
sommersoft 2569b33c84 1 more sphinx fix; added '.. class::' constructor 2018-03-09 21:00:15 +00:00
sommersoft f21038b913 sphinx fix; incorrect currentmodule ref 2018-03-09 20:24:07 +00:00
sommersoft c1c3a79ec4 atmel-samd: changed Status to Runtime; instituted runtime singleton 2018-03-09 02:19:51 +00:00