Search found 16 matches

by PatrikB
Wed Aug 07, 2019 8:20 pm
Forum: Hardware
Topic: Measure delay between two signals
Replies: 1
Views: 1007

Re: Measure delay between two signals

One idea could be to XOR the two signals to get one signal with twice the frequency where the pulse width will correspond to the delay.

If it would be simpler to measure the pulse width using some functionality in the ESP32.


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by PatrikB
Wed Aug 07, 2019 4:06 pm
Forum: Hardware
Topic: Measure delay between two signals
Replies: 1
Views: 1007

Measure delay between two signals

Hi, I need to measure the delay between two repeating signals with a +-100us accuracy. The frequency is 60Hz, 50% duty cycle and the delay between the two signals can be between 0 - 5ms. The signal amplitude is 3.3V. Is it possible to do this using the MCPWM, RMT or any other HW function in the ESP3...
by PatrikB
Sun Jul 21, 2019 2:52 pm
Forum: Report Bugs
Topic: ESP32 resets on mechanical shock
Replies: 11
Views: 6170

Re: ESP32 resets on mechanical shock

To test the hypothesis you could feed the ESP32 using an external signal generator through a flexible coax cable. Or try a MEMS based oscillator which should be more shock resistant than a crystal. In one design I have seen the oscillator mounted on a cushion of foam to reduce vibrations/shock. If y...
by PatrikB
Thu Jul 11, 2019 12:08 pm
Forum: Report Bugs
Topic: ESP32 resets on mechanical shock
Replies: 11
Views: 6170

Re: ESP32 resets on mechanical shock

Could also be the crystal oscillator, vibrations will modulate the output signal.
by PatrikB
Wed May 29, 2019 1:12 pm
Forum: ESP-IDF
Topic: LWIP Statistics
Replies: 1
Views: 1137

LWIP Statistics

Hi,

We are interrested in to characterize the data consumption at byte level for our application.

Is it possible to read out the statistics defined in the "stats_mib2_netif_ctrs" struct ?
https://github.com/espressif/esp-lwip/b ... ip/stats.h
by PatrikB
Tue May 21, 2019 7:31 pm
Forum: General Discussion
Topic: Let's talk wifi and TCP
Replies: 6
Views: 4314

Re: Let's talk wifi and TCP

Hi,

Are having the same issue, did you manage to solve it?

BR
Patrik
by PatrikB
Sun Mar 10, 2019 10:23 am
Forum: ESP-IDF
Topic: Recommendations for creating production build
Replies: 0
Views: 951

Recommendations for creating production build

Hi, Browsed through the ESP-IDF documentation but couldn't find any specific part regarding recommendations for creating a production build. Our device will be used in a public environment where anyone can access it and easily steal it if wanted, so making it as hard as possible to reverse engineer,...
by PatrikB
Sat Mar 02, 2019 5:34 pm
Forum: Hardware
Topic: Preferred Antenna for ESP32-WROOM-32U module
Replies: 9
Views: 7175

Re: Preferred Antenna for ESP32-WROOM-32U module

Could you share the same information for ESP-WROVER-I and IB?
by PatrikB
Sat Jan 26, 2019 12:26 pm
Forum: Hardware
Topic: ESP-WROVER version for new design
Replies: 2
Views: 1834

Re: ESP-WROVER version for new design

Ok, thanks for the information. We will order some IB for the next prototype run :)
by PatrikB
Fri Jan 25, 2019 10:13 am
Forum: Hardware
Topic: ESP-WROVER version for new design
Replies: 2
Views: 1834

ESP-WROVER version for new design

Hi,

For a new design shall we choose ESP32-WROVER-I or ESP32-WROVER-IB?

Will the I version be phased out since that's the oldest?

BR
Patrik B

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