ESP8266 Community Forum

I am trying to interrupt a ESP8266 nodemcu using the interrupt from ADXL345. I know that the interrupt is being raised - as a function call to read the interrupt in the loop does get to it - however, the ISR registered against that interrupt fails to get called and set the global variable - which the beginning of the loop fails to read... Attached the sketch for your reference...

I don't know how it goes with ESP8266 but in many environments it is a bad idea to change variable values in an interrupt. But defining the variable "volatile" may help:

volatile uint8_t intSrc = 0; // The interrupt source is read into this

See e.g. this

Thanks a lot for your reply.

Anttiduino wrote:volatile uint8_t intSrc = 0; // The interrupt source is read into this

Added the "volatile" qualifier in the sketch. However, that did not make any difference.

I don't this if-statement works as you have planned ??



"&&" is "logical AND" -operator and is evaluated only after "==" -operator ??