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Touch Pad Error #4313

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Singein opened this issue Nov 21, 2018 · 9 comments
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Touch Pad Error #4313

Singein opened this issue Nov 21, 2018 · 9 comments

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@Singein
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Singein commented Nov 21, 2018

Touch pad error

>>> import machine
>>> from machine import Pin
>>> t = machine.TouchPad(Pin(32))
>>> t.read()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: Touch pad error

Originally posted by @fuermohao in #3531 (comment)
@Singein Singein mentioned this issue Nov 21, 2018
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@Singein
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Singein commented Nov 21, 2018 •
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my board is NodeMCU-32S.

@nickzoic
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Thanks! If you can please also add in details of which touch channels (all of them? only some of them?) are affected that'd help a lot.
ports/esp32/machine_touchpad.c:mtp_read() returns that error for any return from the ESP-IDF function touch_pad_read other than ESP_OK ... that might occur if the pin is not oscillating ... Is anything else attached or is this reproducible on just the bare board?

https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripheral/touch_pad.html#_CPPv214touch_pad_read11touch_pad_tP8uint16_t

@Singein
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Singein commented Nov 21, 2018 •
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@nickzoic

If you can please also add in details of which touch channels (all of them? only some of them?) are affected that'd help a lot.

ok, but I still need some time to figure out.

@Singein
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Singein commented Nov 21, 2018

@nickzoic
I only found this pin layout. As for schematic I didn't find it.

@Singein
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Singein commented Nov 21, 2018

image

@nickzoic I tried this @MrSurly
It seems a little different from yesterday.

Further, I found that when I touch the touchpad, an error is triggered and it will not be released.
image

@Singein
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Singein commented Nov 21, 2018

image
here is my breadboard wiring diagram

@nickzoic
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nickzoic commented Nov 21, 2018 via email

@Singein
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Singein commented Nov 21, 2018

oh！I got it... I am so stupid...
I removed it, now GPIO32 works fine.
So let's just shutdown this issue.

@Singein Singein closed this as completed Nov 21, 2018
@nickzoic
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nickzoic commented Nov 21, 2018 via email •
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kamtom480 pushed a commit to kamtom480/micropython that referenced this issue Mar 3, 2021
@tannewt
Merge pull request micropython#4313 from weblate/weblate-circuitpytho…
55e41d4 
…n-main

Translations update from Weblate
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@nickzoic @Singein