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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1993 | - | 1 | /* |
| 2 | MS561101BA_movaverage.pde - Reads from the sensors and outputs a moving averaged pressure reading |
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| 3 | |||
| 4 | Copyright (C) 2011 Fabio Varesano <fvaresano@yahoo.it> |
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| 5 | |||
| 6 | Development of this code has been supported by the Department of Computer Science, |
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| 7 | Universita' degli Studi di Torino, Italy within the Piemonte Project |
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| 8 | http://www.piemonte.di.unito.it/ |
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| 9 | |||
| 10 | |||
| 11 | This program is free software: you can redistribute it and/or modify |
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| 12 | it under the terms of the version 3 GNU General Public License as |
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| 13 | published by the Free Software Foundation. |
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| 14 | |||
| 15 | This program is distributed in the hope that it will be useful, |
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| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 18 | GNU General Public License for more details. |
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| 19 | |||
| 20 | You should have received a copy of the GNU General Public License |
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| 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
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| 22 | |||
| 23 | */ |
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| 24 | |||
| 25 | |||
| 26 | //#define DEBUG_V |
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| 27 | |||
| 28 | #include <Wire.h> |
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| 29 | //#include <DebugUtils.h> |
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| 30 | #include <MS561101BA.h> |
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| 31 | |||
| 32 | |||
| 33 | #define MOVAVG_SIZE 32 |
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| 34 | |||
| 35 | MS561101BA baro = MS561101BA(); |
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| 36 | |||
| 37 | float movavg_buff[MOVAVG_SIZE]; |
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| 38 | int movavg_i=0; |
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| 39 | |||
| 40 | |||
| 41 | void setup() { |
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| 42 | Wire.begin(); |
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| 43 | Serial.begin(9600); |
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| 44 | delay(1000); |
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| 45 | |||
| 46 | // Suppose that the CSB pin is connected to GND. |
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| 47 | // You'll have to check this on your breakout schematics |
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| 48 | baro.init(MS561101BA_ADDR_CSB_LOW); |
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| 49 | delay(100); |
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| 50 | |||
| 51 | // populate movavg_buff before starting loop |
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| 52 | for(int i=0; i<MOVAVG_SIZE; i++) { |
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| 53 | movavg_buff[i] = baro.getPressure(MS561101BA_OSR_4096); |
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| 54 | } |
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| 55 | } |
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| 56 | |||
| 57 | void loop() { |
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| 58 | Serial.print(" temp: "); |
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| 59 | Serial.print(baro.getTemperature(MS561101BA_OSR_4096)); |
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| 60 | Serial.print(" degC pres: "); |
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| 61 | pushAvg(baro.getPressure(MS561101BA_OSR_4096)); |
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| 62 | Serial.print(getAvg(movavg_buff, MOVAVG_SIZE)); |
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| 63 | Serial.println(" mbar"); |
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| 64 | } |
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| 65 | |||
| 66 | void pushAvg(float val) { |
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| 67 | movavg_buff[movavg_i] = val; |
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| 68 | movavg_i = (movavg_i + 1) % MOVAVG_SIZE; |
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| 69 | } |
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| 70 | |||
| 71 | float getAvg(float * buff, int size) { |
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| 72 | float sum = 0.0; |
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| 73 | for(int i=0; i<size; i++) { |
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| 74 | sum += buff[i]; |
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| 75 | } |
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| 76 | return sum / size; |
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| 77 | } |