Emeline Genest / MQ2

A library for the MQ2 sensor. Based on https://github.com/labay11 and http://sandboxelectronics.com/?p=165

Dependents:   Detection_incendie

Files at this revision

API Documentation at this revision

Revision 8:6eba34552ceb, committed 2021-06-22

Comitter:
emelinegen
Date:
Tue Jun 22 12:34:07 2021 +0000
Parent:
7:944051b30179
Commit message:
d

Changed in this revision

MQ2.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/MQ2.cpp	Wed Nov 08 10:43:37 2017 +0000
+++ b/MQ2.cpp	Tue Jun 22 12:34:07 2021 +0000
@@ -59,7 +59,8 @@
   float val=0;
   for (int i=0;i<CALIBARAION_SAMPLE_TIMES;i++) {                                        //take multiple samples
     val += MQResistanceCalculation(_pin.read_u16()>>6);
-    wait_ms(CALIBRATION_SAMPLE_INTERVAL);
+    //wait_ms(CALIBRATION_SAMPLE_INTERVAL);
+    ThisThread::sleep_for(50ms);
   }
   val = val/CALIBARAION_SAMPLE_TIMES;                                                   //calculate the average value
   val = val/RO_CLEAN_AIR_FACTOR;                                                        //divided by RO_CLEAN_AIR_FACTOR yields the Ro according to the chart in the datasheet 
@@ -79,7 +80,8 @@
   float rs=0;
   for (i=0;i<READ_SAMPLE_TIMES;i++) {
     rs += MQResistanceCalculation(_pin.read_u16()>>6);
-    wait_ms(READ_SAMPLE_INTERVAL);
+    //wait_ms(READ_SAMPLE_INTERVAL);
+    ThisThread::sleep_for(50ms);
   }
   rs = rs/READ_SAMPLE_TIMES;
   return rs;