Search found 7 matches

by rfleming
Fri Jul 19, 2019 5:22 am
Forum: ESP32 IDF
Topic: Request: Extend "esp_bt_gap_register_callback" related functions to include context like WiFi api
Replies: 0
Views: 127

Request: Extend "esp_bt_gap_register_callback" related functions to include context like WiFi api

Hi All, I have been working the esp for a while now with c++ classes and have been able to create static helper functions to be able to define various callback functions from within the class itself. This is particularly helpful if I was to use multiple instances of the same class. One such example ...
by rfleming
Mon Jul 08, 2019 2:43 am
Forum: General Discussion
Topic: JTAG Eclipse issues. Cmd prompt maybe?
Replies: 1
Views: 340

JTAG Eclipse issues. Cmd prompt maybe?

I am having an issue with eclipse when trying to debug. it keep showing the error "Could not determine GDB version using command: xtensa-esp32-elf-gdb --version". I immediately thought this was a pathing issue. I tested everything with in CLI with mingw32.exe and it all works fine. Knowing that I ha...
by rfleming
Tue Jun 25, 2019 6:50 am
Forum: General Discussion
Topic: Tcp socket closed detection
Replies: 2
Views: 270

Re: Tcp socket closed detection

Found the solution. if the bytes returned is == 0, the socket has closed. -1 means not bytes received and > 0 is the actual count. Interesting that 0 and -1 are like they are, I thought they would've swapped. solution: char buf[256]; int bytes_received = recv(wifiState.clientSocket, buf, 10, MSG_DON...
by rfleming
Thu Jun 20, 2019 11:05 pm
Forum: General Discussion
Topic: Tcp socket closed detection
Replies: 2
Views: 270

Tcp socket closed detection

I have created a TCP client over wifi with the ESP and it connects to my TCP Server on my windows pc just fine. I can do data transmissions, send and receive. Though if I close the server connection I don't get any notification nor can I find a way to poll for if the socket is still active. The only...
by rfleming
Fri Jan 11, 2019 4:19 am
Forum: General Discussion
Topic: After booting, DMA fed ADC sometimes shows 4095 always!
Replies: 0
Views: 313

After booting, DMA fed ADC sometimes shows 4095 always!

I am currently working with the adc on a WROVER module on some custom hardware. I can confirm that the signal being fed into the adc has a steady state value of 200mV. This with a 3.3V reference results in ~200 as a raw adc sample. After rebooting my unit, specifically power cycling rather than usin...
by rfleming
Thu Dec 06, 2018 2:08 am
Forum: General Discussion
Topic: ADC speed?
Replies: 25
Views: 19226

Re: ADC speed?

Your code is exactly what I have been looking for trying to dma an adc buffer. However when I change the input from ADC Chan 0 to ADC chan 5, IO33 that I am using. I appear to have a value of 24575 at 0V and 20480 at 3.3V. What are these values actually supposed to represent? they're linear and scal...
by rfleming
Tue Oct 09, 2018 12:59 am
Forum: ESP32 IDF
Topic: Project structure compile errors
Replies: 1
Views: 406

Project structure compile errors

Hi Team, I have been struggling with trying to restructure my esp32 application to give the following directory structure: components/ - drivers/ + component1/ - component1_type1.cpp - component1_type1.h + common/ - utilities.cpp - utilities.h - hal/ +i2c.cpp +i2c.h main/ - app.cpp - app.h Funnily e...

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