Search found 20 matches

by Karim1993
Thu Jan 17, 2019 6:20 am
Forum: General Discussion
Topic: -ve edge Not detected after waking up from deepsleep
Replies: 1
Views: 342

-ve edge Not detected after waking up from deepsleep

Hi I have Configured a gpio 35 for deepsleep interrupt which is working fine . The isr is not being triggered for the -ve edge My requirement is as follows . The board needs to wake up from deep sleep on positive edge on the interrupt pin and do some work and detect a negative edge on the same inter...
by Karim1993
Thu Jan 17, 2019 5:39 am
Forum: General Discussion
Topic: Not Waking up from deep sleep after connecting 32K external crystal
Replies: 3
Views: 612

Re: Not Waking up from deep sleep after connecting 32K external crystal

Yes, Tried it was 2000 I have changed it to 5000.

Changing the values sometimes I get external oscillator not detected using150KHz internal oscillator
by Karim1993
Mon Jan 14, 2019 4:25 am
Forum: General Discussion
Topic: Not Waking up from deep sleep after connecting 32K external crystal
Replies: 3
Views: 612

Re: Not Waking up from deep sleep after connecting 32K external crystal

Any Update on this Please , how to remove this flash read err 1000
by Karim1993
Fri Jan 11, 2019 6:29 am
Forum: General Discussion
Topic: Not Waking up from deep sleep after connecting 32K external crystal
Replies: 3
Views: 612

Not Waking up from deep sleep after connecting 32K external crystal

hi, After connecting 32K crystal to the defined pins of esp32. I didn't see any warning of clock changing to internal oscillator . Now when the board went into deep sleep and is not able to wake up. When I reset I recieve flash read err,1000, Hence I made attached changes but still the issue exists....
by Karim1993
Sat Dec 29, 2018 4:46 am
Forum: General Discussion
Topic: Is writing unique Id directly in esp32 using esptool.py possible ??
Replies: 1
Views: 437

Is writing unique Id directly in esp32 using esptool.py possible ??

Is i possible to write a unique id (with 64 to 128 bytes size) into a specific location in the esp32 internal flash memory without effecting the application code using the esptool.py.
by Karim1993
Wed Nov 14, 2018 9:20 am
Forum: General Discussion
Topic: Half Duplex Serial communication support for esp32
Replies: 0
Views: 428

Half Duplex Serial communication support for esp32

Hi Is it possible to use the existing uart driver as a half duplex serial trans-receiver. Below are the things I am trying to achieve. 1) Single gpio as TX/RX. 2)The first command will be transmission with a checksum in the end. 3)Upon transmission it will go receive mode and wait for data with chec...
by Karim1993
Mon Nov 05, 2018 12:11 pm
Forum: General Discussion
Topic: ESP32 debugging with Segger Jlink
Replies: 17
Views: 6439

Re: ESP32 debugging with Segger Jlink

I built the openocd from source by following steps from https://docs.espressif.com/projects/esp ... linux.html

Then the command openocd -s . -f interface/jlink.cfg -f board/esp-wroom-32.cfg

Thanks,
Karim
by Karim1993
Thu Nov 01, 2018 8:17 am
Forum: General Discussion
Topic: ESP32 debugging with Segger Jlink
Replies: 17
Views: 6439

Re: ESP32 debugging with Segger Jlink

ESP32 debugging with Segger JLink worked fine for me an Ubuntu 14.04 machine with the binaries provided. I just faced the issue with clock frequency which was later resolved.
by Karim1993
Thu Oct 25, 2018 8:08 am
Forum: General Discussion
Topic: ESP32 Input only pins as Interrupts for Deep sleep wakeup
Replies: 0
Views: 475

ESP32 Input only pins as Interrupts for Deep sleep wakeup

Hi, We are planning to input only pins GPIO34-39 as External interrupts to wake-up from deep-sleep. I have following queries regarding this 1)Do these pins any pulldown/additional circuitry to protect them from external HW and reduce current consumption. 2)Do we need to isolate them using rtc_gpio_i...

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