Revision 0:3c154d34f47e, committed 2016-08-11

Comitter:

zeus3110

Date:

Thu Aug 11 00:41:23 2016 +0000

Commit message:

Initial Release

Changed in this revision

diff -r 000000000000 -r 3c154d34f47e MH_Z19.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MH_Z19.cpp	Thu Aug 11 00:41:23 2016 +0000
@@ -0,0 +1,45 @@
+/* mbed MH-Z19 Library
+ * Copyright (c) 2016, zeus3110
+ *
+ * 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.
+ */
+
+#include "MH_Z19.h"
+
+MH_Z19::MH_Z19(PinName p) : Port(p) {
+    Port.rise(this, &MH_Z19::rise);
+    Port.fall(this, &MH_Z19::fall);
+    OnWidth=2;
+    T.start();
+}
+
+int MH_Z19::ReadCO2PPM() {
+    
+    return ((CO2_MAX_PPM)*(OnWidth-2)/(PWM_CYCLE_MS-4));
+
+}
+    
+
+void MH_Z19::rise() {
+    T.reset();
+}
+
+void MH_Z19::fall() {
+    OnWidth=T.read_ms();
+}

diff -r 000000000000 -r 3c154d34f47e MH_Z19.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MH_Z19.h	Thu Aug 11 00:41:23 2016 +0000
@@ -0,0 +1,50 @@
+/* mbed MH-Z19 Library
+ * Copyright (c) 2016, zeus3110
+ *
+ * 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.
+ */
+
+#ifndef MH_Z19_H
+#define MH_Z19_H
+
+#include "mbed.h"
+
+#define PWM_CYCLE_MS 1004
+#define CO2_MAX_PPM 5000
+
+class MH_Z19 {
+public:
+    /** Create a MH_Z19
+     *
+     * @param Port The pwm input pin (must support InterruptIn)
+     */ 
+    MH_Z19(PinName Port);
+
+    int ReadCO2PPM();
+
+protected:        
+    void rise();
+    void fall();
+    
+    InterruptIn Port;
+    Timer T;
+    int OnWidth;
+};
+
+#endif

diff -r 000000000000 -r 3c154d34f47e main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Aug 11 00:41:23 2016 +0000
@@ -0,0 +1,18 @@
+#include "mbed.h"
+#include "MH_Z19.h"
+
+DigitalOut myled(LED1);
+MH_Z19 Sen(p5);
+
+int main() {
+    
+    wait(2);
+    
+    while(1) {
+        myled = 1;
+        wait(0.2);
+        myled = 0;
+        printf("CO2 PPM:%d\n",Sen.ReadCO2PPM());
+        wait(1.8);
+    }
+}

diff -r 000000000000 -r 3c154d34f47e mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu Aug 11 00:41:23 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/f9eeca106725
\ No newline at end of file