marko puric / DustSenzor

Dust sensor

Dependents:   PMS5003

Fork of DustSenzor by marko puric

DustSenzor.cpp@10:d846eb9ef8e6, 2017-06-28 (annotated)

Committer:
mpuric
Date:
Wed Jun 28 18:35:18 2017 +0000
Revision:
10:d846eb9ef8e6
Parent:
7:067de0268900 
added api doc

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mpuric 5:fd42a3f8c7eb 1 #include "mbed.h"
mpuric 5:fd42a3f8c7eb 2 #include "DustSenzor.h"
mpuric 2:4c3bdadb6bc4 3
mpuric 2:4c3bdadb6bc4 4
mpuric 7:067de0268900 5 DustSenzor :: DustSenzor ( PinName set, PinName uartTx, PinName uartRx ) : set( set ), uart( uartTx, uartRx ) {
mpuric 5:fd42a3f8c7eb 6 this -> set = 0;
mpuric 2:4c3bdadb6bc4 7 uart.baud(9600);
mpuric 5:fd42a3f8c7eb 8 uart.format(8,Serial::None,1);
mpuric 6:f6a93c155525 9 uart.attach(this, &DustSenzor::serialRead, Serial::RxIrq);
mpuric 5:fd42a3f8c7eb 10 br = 0;
mpuric 5:fd42a3f8c7eb 11 }
mpuric 5:fd42a3f8c7eb 12
mpuric 5:fd42a3f8c7eb 13
mpuric 5:fd42a3f8c7eb 14 void DustSenzor::start() {
mpuric 5:fd42a3f8c7eb 15 this -> set = 1;
mpuric 2:4c3bdadb6bc4 16
mpuric 6:f6a93c155525 17 }
mpuric 5:fd42a3f8c7eb 18
mpuric 6:f6a93c155525 19 void DustSenzor::stop() {
mpuric 5:fd42a3f8c7eb 20 this -> set = 0;
mpuric 6:f6a93c155525 21 }
mpuric 5:fd42a3f8c7eb 22
mpuric 5:fd42a3f8c7eb 23 float * DustSenzor::read() {
mpuric 5:fd42a3f8c7eb 24 float* ptr = new float[6];
mpuric 6:f6a93c155525 25 for(int i = 0; i < 6; i++)
mpuric 5:fd42a3f8c7eb 26 ptr[i] = value[i];
mpuric 5:fd42a3f8c7eb 27 return ptr;
mpuric 6:f6a93c155525 28 }
mpuric 3:e382316d6d00 29
mpuric 7:067de0268900 30 void DustSenzor::readBuffer() {
mpuric 7:067de0268900 31 if(buff[0] == 0x42 ){
mpuric 7:067de0268900 32 if(buff[1] == 0x4d) {
mpuric 7:067de0268900 33 save(buff);
mpuric 7:067de0268900 34 br = 0;
mpuric 7:067de0268900 35 }
mpuric 7:067de0268900 36 }
mpuric 7:067de0268900 37 }
mpuric 7:067de0268900 38
mpuric 7:067de0268900 39
mpuric 6:f6a93c155525 40 void DustSenzor::serialRead() {
mpuric 0:513b42c738f3 41 buff[br]=uart.getc();
mpuric 2:4c3bdadb6bc4 42 br++;
mpuric 6:f6a93c155525 43 if(br == 32){
mpuric 6:f6a93c155525 44 readBuffer();
mpuric 3:e382316d6d00 45 }
mpuric 6:f6a93c155525 46 }
mpuric 0:513b42c738f3 47
mpuric 0:513b42c738f3 48
mpuric 2:4c3bdadb6bc4 49
mpuric 6:f6a93c155525 50 void DustSenzor::save( unsigned char *thebuff) {
mpuric 6:f6a93c155525 51 int j = 16;
mpuric 6:f6a93c155525 52 for(int i = 0; i < 6; i++) {
mpuric 6:f6a93c155525 53 value[i] = thebuff[j+1]|thebuff[j]<<8;
mpuric 5:fd42a3f8c7eb 54 j += 2;
mpuric 5:fd42a3f8c7eb 55 }
mpuric 5:fd42a3f8c7eb 56 }
mpuric 6:f6a93c155525 57
mpuric 6:f6a93c155525 58 /*
mpuric 6:f6a93c155525 59 * thebuff[17]|thebuff[16]<<8; number of particles with diameter beyond 0.3 um in 0.1 L of air.
mpuric 6:f6a93c155525 60 * thebuff[19]|thebuff[18]<<8; number of particles with diameter beyond 0.5 um in 0.1 L of air.
mpuric 6:f6a93c155525 61 * thebuff[21]|thebuff[20]<<8; number of particles with diameter beyond 1.0 um in 0.1 L of air.
mpuric 6:f6a93c155525 62
mpuric 6:f6a93c155525 63 * thebuff[23]|thebuff[22]<<8; number of particles with diameter beyond 2.5 um in 0.1 L of air.
mpuric 6:f6a93c155525 64 * thebuff[25]|thebuff[24]<<8; number of particles with diameter beyond 5 um in 0.1 L of air.
mpuric 6:f6a93c155525 65 * thebuff[27]|thebuff[26]<<8; number of particles with diameter beyond 10 um in 0.1 L of air.
mpuric 6:f6a93c155525 66 */