Revision 0:3656aea4e6f6, committed 2014-10-08

Comitter:

yasuyuki

Date:

Wed Oct 08 02:48:36 2014 +0000

Child:

1:39f20504d5c5

Commit message:

first release

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/AM2321.cpp	Wed Oct 08 02:48:36 2014 +0000
@@ -0,0 +1,61 @@
+//**********************
+// AM2321.cpp for mbed
+//
+// AM2321 am2321(P0_5,P0_4);
+// or
+// I2C i2c(P0_5,P0_4);
+// AM2321 am2321(i2c);
+//
+// (C)Copyright 2014 All rights reserved by Y.Onodera
+// http://einstlab.web.fc2.com
+//**********************
+
+#include "mbed.h"
+#include "AM2321.h"
+
+AM2321::AM2321 (PinName sda, PinName scl) : _i2c(sda, scl) {
+}
+AM2321::AM2321 (I2C& p_i2c) : _i2c(p_i2c) {
+}
+
+
+void AM2321::get()
+{
+    // step 1:wakeup
+    _i2c.write(AM2321_ADDR, NULL, 0);
+    wait_us(800);   // 800us - 3ms
+
+    // step 2:command
+    buf[0] = 0x03;  // Get Humidity and Temperature
+    buf[1] = 0x00;  // Start address
+    buf[2] = 0x04;  // Length
+    _i2c.write(AM2321_ADDR, buf, 3);
+    wait_us(1500);  // 1.5ms
+
+    // step 3:data
+    _i2c.read( AM2321_ADDR, buf, 8);
+
+}
+
+int AM2321::humidity()
+{
+
+    // get hum
+    get();
+    hum.byte.HB=buf[2];
+    hum.byte.LB=buf[3];
+    return hum.Val;
+    
+}
+
+int AM2321::temperature()
+{
+
+    // get temp
+    get();
+    temp.byte.HB=buf[4];
+    temp.byte.LB=buf[5];
+    return temp.Val;
+    
+}
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/AM2321.h	Wed Oct 08 02:48:36 2014 +0000
@@ -0,0 +1,40 @@
+//**********************
+// AM2321.h for mbed
+//
+// (C)Copyright 2014 All rights reserved by Y.Onodera
+// http://einstlab.web.fc2.com
+//**********************
+#ifndef AM2321_H_
+#define AM2321_H_
+
+#define AM2321_ADDR    0xB8
+#define AM2321_HUM_H  0x00
+#define AM2321_HUM_L  0x01
+#define AM2321_TEMP_H  0x02
+#define AM2321_TEMP_L  0x03
+
+#include "mbed.h"
+#include "typedef.h"
+
+class AM2321{
+public:
+    AM2321 (PinName sda, PinName scl);
+    AM2321 (I2C& p_i2c);
+
+    void get();
+    int humidity();
+    int temperature();
+
+protected:
+    
+    I2C _i2c;
+
+    WORD_VAL hum;
+    WORD_VAL temp;
+    char buf[8];
+
+};
+
+#endif /* AM2321_H_ */
+
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/typedef.h	Wed Oct 08 02:48:36 2014 +0000
@@ -0,0 +1,54 @@
+//**********************
+// typedef for mbed
+//
+// Condition:
+//
+// (C)Copyright 2014 All rights reserved by Y.Onodera
+// http://einstlab.web.fc2.com
+//**********************
+#ifndef TYPEDEF_H
+#define TYPEDEF_H
+
+typedef unsigned char       BYTE;                           /* 8-bit unsigned  */
+typedef unsigned short int  WORD;                           /* 16-bit unsigned */
+typedef unsigned int        DWORD;                          /* 32-bit unsigned */
+typedef unsigned long long  QWORD;                          /* 64-bit unsigned */
+
+
+typedef union
+{
+    WORD Val;
+    BYTE v[2];
+    struct
+    {
+        BYTE LB;
+        BYTE HB;
+    } byte;
+} WORD_VAL;
+
+typedef union
+{
+    DWORD Val;
+    WORD w[2];
+    BYTE v[4];
+    struct
+    {
+        WORD LW;
+        WORD HW;
+    } word;
+    struct
+    {
+        BYTE LB;
+        BYTE HB;
+        BYTE UB;
+        BYTE MB;
+    } byte;
+    struct
+    {
+        WORD_VAL low;
+        WORD_VAL high;
+    }wordUnion;
+
+} DWORD_VAL;
+
+#endif /* TYPEDEF_H */