Search found 14 matches

by ldbm
Fri May 22, 2020 6:12 pm
Forum: General Discussion and Questions
Topic: issues with wakeup_X1
Replies: 3
Views: 332

Re: issues with wakeup_X1

[update on Tamper]: So the Tamper approach works in terms of waking up the board on the expected signal, BUT, the unwanted spurious wakes still occur. Looking more closely it seems that when the board is in deepsleep, something internally happens every 20-30 sec that awakes the board, even though my...
by ldbm
Fri May 22, 2020 6:07 pm
Forum: General Discussion and Questions
Topic: issues with wakeup_X1
Replies: 3
Views: 332

Re: issues with wakeup_X1

Isn't it what is done by upower ? I have been scrolling through it and the SM micro's document but this is quite in-depth.
by ldbm
Thu May 21, 2020 10:05 pm
Forum: General Discussion and Questions
Topic: issues with wakeup_X1
Replies: 3
Views: 332

issues with wakeup_X1

Hi @pythoncoder, or others familiar with upower I am trying the upower lib to wake up from deepsleep using the X1 external pin as described in the micropower repo. I have scope on my external trigger signaland it looks as expected. It is high (default), then drop to low for ~ 10-15ms, then return to...
by ldbm
Thu May 21, 2020 9:48 pm
Forum: General Discussion and Questions
Topic: How to handle real time communication between PC and pyboard?
Replies: 3
Views: 349

Re: How to handle real time communication between PC and pyboard?

Have you considered setting up a uart on the pyb, and communicating via a uart/USB (virtual COM) cable to the PC ?
by ldbm
Thu May 21, 2020 2:04 am
Forum: MicroPython pyboard
Topic: Low Power machine.lightsleep PyBoard v1.1
Replies: 0
Views: 649

Low Power machine.lightsleep PyBoard v1.1

So I am trying to obtain the 380uA the specs refer to for Pyb v1.1 in machine.lighstsleep I set all X and Y I/Os as per Damien's script , and get ~ 760uA. What am I missing to squeeze the extra ~ 300uA to reach the spec'ed value ? I still have access to the REPL via uart, nothing is connected to USB...
by ldbm
Wed May 20, 2020 6:46 pm
Forum: General Discussion and Questions
Topic: Pin Interrupt awaking from lightsleep
Replies: 1
Views: 205

Re: Pin Interrupt awaking from lightsleep

hmmm... I got it working but I replaced the statement: trigpin.irq(handler=irq_handler,trigger=Pin.IRQ_FALLING, priority=1, wake=machine.lightsleep,hard=True) by (removing "priority", "wake", and "hard" parameters) trigpin.irq(handler=irq_handler,trigger=Pin.IRQ_FALLING) because I kept having an err...
by ldbm
Wed May 20, 2020 5:30 pm
Forum: Pyboard D-series
Topic: RTC
Replies: 6
Views: 1007

Re: RTC

Good to know. Thx Peter.
l.
by ldbm
Wed May 20, 2020 4:02 pm
Forum: General Discussion and Questions
Topic: Pin Interrupt awaking from lightsleep
Replies: 1
Views: 205

Pin Interrupt awaking from lightsleep

Hi, Sorry for being clumsy in the coding, I am not well versed in micropython and the lack of examples I could find makes it harder. I want to do something relatively simple it seems: board: Pyboard v1.1 firmware 1.11 The program is in lightsleep (to save power) but needs to react within ~ 2ms from ...
by ldbm
Tue May 19, 2020 6:28 pm
Forum: MicroPython pyboard
Topic: enough current to power peripheral?
Replies: 3
Views: 338

Re: enough current to power peripheral?

Actually, this micropython official pagehas misleading info about powering the boards: pyb v1.0 can only be powered up to 10 V as they use the LDO MCP1802 . Unless I am missing something (newbie using this board).
Cheers,
L.
by ldbm
Tue May 19, 2020 5:11 pm
Forum: MicroPython pyboard
Topic: enough current to power peripheral?
Replies: 3
Views: 338

Re: enough current to power peripheral?

Thx Robert. Yes like you say why not just powering the peripheral with the external source powering the board.

PS: the doc page points to LDO MCP1802 (up to 10 V supply) and omits the link to the MCP1703 on the Pyboard 1.1 (up to 16 V supply like you mention)