Diff: Multichannel_Gas_GMXXX.h

Revision:

0:2fec9850cc9b

Child:

1:f0e19383efb9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Multichannel_Gas_GMXXX.h	Wed Feb 03 16:41:34 2021 +0100
@@ -0,0 +1,90 @@
+/*
+    Multichannel_Gas_GMXXX.h
+    Description: A drive for Seeed Grove Multichannel gas sensor V2.0.
+    2019 Copyright (c) Seeed Technology Inc.  All right reserved.
+    Author: Hongtai Liu(lht856@foxmail.com)
+    2019-6-18
+
+    The MIT License (MIT)
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+    The above copyright notice and this permission notice shall be included in
+    all copies or substantial portions of the Software.
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+    THE SOFTWARE.1  USA
+*/
+#ifndef __GAS_GMXXX__
+#define __GAS_GMXXX__
+
+//#define SOFTWAREWIRE
+/*#ifdef SOFTWAREWIRE
+    #include <SoftwareWire.h>
+#else
+    #include <Wire.h>
+#endif
+*/
+
+#define GM_RESOLUTION 1023
+
+//command
+#define GM_102B 0x01
+#define GM_302B 0x03
+//#define GM_402B 0x04
+#define GM_502B 0x05
+#define GM_702B 0x07
+//#define GM_802B 0x08
+#define CHANGE_I2C_ADDR 0x55
+#define WARMING_UP 0xFE
+#define WARMING_DOWN  0xFF
+
+template <class T>
+class GAS_GMXXX {
+  public:
+    GAS_GMXXX();
+    void begin(T& wire = Wire, uint8_t address = 0x08);
+    void setAddress(uint8_t address = 0x08);
+    void preheated();
+    void unPreheated();
+    void changeGMXXXAddr(uint8_t address = 0x08);
+    uint32_t measure_NO2(){
+        return getGM102B();
+    };
+    uint32_t getGM102B();
+    uint32_t measure_C2H5OH(){
+        return getGM302B();
+    };
+    uint32_t getGM302B();
+    #ifdef GM_402B
+    uint32_t getGM402B();
+    #endif
+    uint32_t measure_VOC(){
+        return getGM502B();
+    };
+    uint32_t getGM502B();
+    uint32_t measure_CO(){
+        return getGM702B();
+    };
+    uint32_t getGM702B();
+    #ifdef GM_802B
+    uint32_t getGM802B();
+    #endif
+    inline float calcVol(uint32_t adc) {
+        return (adc * 3.3) / GM_RESOLUTION;
+    };
+  private:
+    T* _Wire;
+    bool isPreheated;
+    uint8_t GMXXX_ADDRESS;
+    void GMXXXWriteByte(uint8_t cmd);
+    uint32_t GMXXXRead32();
+};
+#endif