Search found 99 matches

by rin67630
Fri Apr 23, 2021 6:56 am
Forum: ESP32 Arduino
Topic: GPIO 38-38 = ADC1-ADC2?
Replies: 1
Views: 2736

Re: GPIO 38-38 = ADC1-ADC2?

Image

What is the "internal switch amplifier"?
by rin67630
Sat Apr 10, 2021 8:51 pm
Forum: ESP32 Arduino
Topic: Warning: new version 1.0.6 of ESP 32 compiler takes TLS by default!
Replies: 0
Views: 2122

Warning: new version 1.0.6 of ESP 32 compiler takes TLS by default!

The new version 1.0.16 of ESP 32 compiler takes TLS by default! This may break e.g. communication with MQTT brokers that do not handle TLS. If you enable full debugging messages you get [V][ssl_client.cpp:265] stop_ssl_socket(): Cleaning SSL connection. [V][ssl_client.cpp:59] start_ssl_client(): Fre...
by rin67630
Fri Apr 09, 2021 1:30 pm
Forum: ESP32 Arduino
Topic: GPIO 38-38 = ADC1-ADC2?
Replies: 1
Views: 2736

GPIO 38-38 = ADC1-ADC2?

Espressif specifies: The ADC driver API supports ADC1 (8 channels, attached to GPIOs 32 - 39), That should include GPIO 37,38, logically with ADC1 and 2 respectively. The Vroom module does not expose these pins, so one have only 6 ADC inputs freely usable. (all ADC2 pins are is mainly not usable wit...
by rin67630
Sun Mar 07, 2021 10:08 am
Forum: ESP32 Arduino
Topic: Fix non-linear ADC
Replies: 3
Views: 5008

Fix non-linear ADC

The ADC of the ESP32 has a – fully justified – bad reputation. - The advertised 12 bits are practically 9 bit +3 bit noise. - The V/ADC relation is not linear - The first 0.21V of the input (by 11dB attenuation) are ignored I am proposing here a solution to get an acceptable result despite of all th...
by rin67630
Fri May 22, 2020 9:36 am
Forum: ESP32 Arduino
Topic: Porting basic code to ESP32
Replies: 4
Views: 5267

Re: Porting basic code to ESP32

My glass ball needs a repair.

Please define "can't get it to work".
What did you do?
What did you expect?
What did you get instead?
by rin67630
Fri May 22, 2020 8:18 am
Forum: ESP32 Arduino
Topic: Best NTP-Time library for ESP32?
Replies: 15
Views: 42958

Re: Best NTP-Time library for ESP32?

... The best library, I find, is timelib.h, the latest version is (seems to be!) by Paul Stoffregen ... I strongly disagree. Been there, done that... The Arduino timelib.h has been written for a blank Arduino and bases on millis() only. A kind of bare metal time library that is not even fully POSIX...
by rin67630
Sat May 16, 2020 8:09 am
Forum: ESP32 Arduino
Topic: Wanted: BLE low power example
Replies: 1
Views: 3275

Re: Wanted: BLE low power example

If you use the Arduino IDE, you have got the examples in File/Examples/ Examples for ESP32/ESP32 BLE Arduino...

(at their logical place, by the way)
by rin67630
Fri May 01, 2020 3:27 am
Forum: ESP32 Arduino
Topic: That is a somewhat curious forum here...
Replies: 8
Views: 8799

Re: That is a somewhat curious forum here...

Thank you, but what can I do with this information? esp_err_t esp_wifi_set_ps(WIFI_PS_MAX_MODEM); returns an error from the library: 'WIFI_PS_MAX_MODEM' was not declared in this scope. Does that mean that the library under ...\Arduino\Hardware\espressif\esp32\libraries\WiFi just makes no use of the ...
by rin67630
Thu Apr 30, 2020 10:05 pm
Forum: ESP32 Arduino
Topic: SimpleTime ...and then?
Replies: 3
Views: 4380

Re: SimpleTime ...and then?

Thank you for replying I have currently 2 routines: I have slightly modified the routines; void reConnect() { WiFi.mode(WIFI_STA); WiFi.begin(); while (WiFi.status() != WL_CONNECTED) { delay(10); } } void disConnect() { // WiFi.disconnect(); //temporarily disconnect WiFi as it's no longer needed Wi...
by rin67630
Thu Apr 30, 2020 8:45 pm
Forum: ESP32 Arduino
Topic: That is a somewhat curious forum here...
Replies: 8
Views: 8799

Re: That is a somewhat curious forum here...

Most questions in here can be answered by using a simple Google search... Most questions, maybe... But I could not find anything useful about the concrete syntax to enter into modem sleep, NOT light sleep, NOT deep sleep that are documented here https://docs.espressif.com/projects/esp-idf/en/latest...