Hi everyone. I have nine arduino megas connected via i2c, one as master and eight slaves. The master collects information from the slaves and sends commands to them to turn an IO on or off (they act as a pool of ~450 digital outputs for a control system). The one issue I have is with a bit of code…

void loop() { noInterrupts (); uint32_t lastUpdateTime = lastUpdateMillis; interrupts (); unsigned long thisNum=millis()-lastUpdateTime; if(thisNum>=2000){

Millis() and i2c interrupt issue

Projects Programming

UKHeliBob September 14, 2021, 9:38am 2

no full sketch = no help likely

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Millis() and i2c interrupt issue

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