Search found 4 matches

by BlairM
Wed Apr 25, 2018 9:03 am
Forum: ESP32 Arduino
Topic: SPI implementation issues
Replies: 0
Views: 3287

SPI implementation issues

Hello All, I have a ATMEGA2560 I wish to pass data back and forward to from a ESP32. The arduino code will not compile for the ESP32. I get the error "exit status 1 expected constructor, destructor, or type conversion before '(' token" when it tries to compile the ISR routine as per the below code e...
by BlairM
Thu Aug 31, 2017 12:43 am
Forum: ESP32 Arduino
Topic: Check Sum Error DHT22
Replies: 4
Views: 10698

Re: Check Sum Error DHT22

The guidance James provides has been invaluable. The Rob Tillaart ( https://github.com/RobTillaart/Arduino) DHTStable library ran without alteration with my DHT22 and ESP32 using his DHT22 example in that library. If anyone else is trying to use the DHT sensors, I would highly recommend looking at t...
by BlairM
Wed Aug 30, 2017 10:06 am
Forum: ESP32 Arduino
Topic: Check Sum Error DHT22
Replies: 4
Views: 10698

Re: Check Sum Error DHT22

Thanks James for your significant efforts. I had concluded it was probably board speed and timing that was the issue. I had been hunting for ways to reduce the clock speed within the Arduino environment, but failed. I figured as RH went up the time to punch out the 16 bit word went up and that is wh...
by BlairM
Sat Aug 26, 2017 11:06 pm
Forum: ESP32 Arduino
Topic: Check Sum Error DHT22
Replies: 4
Views: 10698

Check Sum Error DHT22

Hello, I am having limited success working with a DHT22 Temperature and Humidity Sensor. At ambient temperature and humidity if reads fine using one of the many example sketches for this sensor, but when I pick it up or breath on it the sensor fails. I have activated debug in the DHT.h file and the ...