Search found 447 matches

by mikemoy
Sun Mar 08, 2020 3:57 am
Forum: General Discussion
Topic: Weird problem: Sensor only works on GPIO2 !?
Replies: 3
Views: 1419

Re: Weird problem: Sensor only works on GPIO2 !?

yes, i am aware of the other bootstrap pins. I took his statement to litterally, as if its part of the active flashing process like tx/rx pins But because GPIO2 is involved in the flashing/programming process, Did you go through the DHT12 code to see if the author messed up anywhere ? it seems he wr...
by mikemoy
Sat Mar 07, 2020 7:02 pm
Forum: General Discussion
Topic: Weird problem: Sensor only works on GPIO2 !?
Replies: 3
Views: 1419

Re: Weird problem: Sensor only works on GPIO2 !?

I am more curious why you need GPIO2 to flash your device.
GPIO0 is all that is needed.
by mikemoy
Thu Mar 05, 2020 6:07 am
Forum: Hardware
Topic: I can't flash ESP32-WROOM module in my project
Replies: 1
Views: 810

Re: I can't flash ESP32-WROOM module in my project

your missing a button on the EN line to reset it after you pull GPIO0 low to put it into programming mode.
Your also missing a pullup on GPIO0. I believe there is a internal pullup but you'd have to check that.
by mikemoy
Wed Mar 04, 2020 1:28 pm
Forum: Hardware
Topic: Help needed to debug custom ESP32 Pico D4 PCB
Replies: 6
Views: 1047

Re: Help needed to debug custom ESP32 Pico D4 PCB

Can this lack of bypass caps cause the module not to boot up ? Its hard to say every design and PCB is different. Also, is there any way to verify that my module is grounded or not ? I can't think of any with all the parts on the board. If the the ESP32 was the only part on the board you could use ...
by mikemoy
Wed Mar 04, 2020 6:18 am
Forum: Hardware
Topic: Help needed to debug custom ESP32 Pico D4 PCB
Replies: 6
Views: 1047

Re: Help needed to debug custom ESP32 Pico D4 PCB

Nothing jumped out at me besides the fact that you seriously need to put 0.1uf bypass caps on every power pin.
Maybe someone else catches something.
by mikemoy
Wed Feb 26, 2020 7:11 pm
Forum: General Discussion
Topic: ext0 can't work together with ext1?
Replies: 1
Views: 574

Re: ext0 can't work together with ext1?

Try esp_sleep_enable_gpio_wakeup() in pace for your esp_sleep_enable_ext1_wakeup()
by mikemoy
Mon Feb 24, 2020 3:03 pm
Forum: General Discussion
Topic: ESP32, eeprom/nvs
Replies: 1
Views: 385

Re: ESP32, eeprom/nvs

It would probably be a better idea to post that question over at their forum.
by mikemoy
Fri Feb 21, 2020 6:53 pm
Forum: ESP32 IDF
Topic: SPI Callback Functions
Replies: 4
Views: 445

Re: SPI Callback Functions

When you run those 2 (master & slave ) examples as is without any changes does it work fine ?
by mikemoy
Fri Feb 21, 2020 11:11 am
Forum: ESP32 IDF
Topic: SPI Callback Functions
Replies: 4
Views: 445

Re: SPI Callback Functions

What IDF version are you using?

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