Diff: HIH6130.cpp

Revision:

0:8d7f06935726

Child:

4:b5bedc9b6d04

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HIH6130.cpp	Sun Dec 13 08:34:46 2015 +0000
@@ -0,0 +1,48 @@
+/* Copyright (c) 2010-2011 mbed.org, MIT License
+*
+* 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 "HIH6130.h"
+
+HIH6130::HIH6130(PinName sda, PinName scl, int addr) : m_i2c(sda, scl), m_addr(addr<<1) {
+    // activate the peripheral
+}
+
+HIH6130::~HIH6130() { }
+
+uint16_t HIH6130::getValue(float *humidity, float *temperature)
+{
+    uint16_t status = 0 ;
+    uint8_t data[4] ;
+    data[0] = 0x00 ;
+    readRegs(0, data, 4) ;
+
+    status = (data[0] >> 6) & 0x03 ;
+    *humidity = (float)((data[0] & 0x3F) * 256 + data[1]) * 100.0 / (float)0x3FFF ;
+    *temperature = (float)((data[2] * 64) + (data[3] >> 2)) * 165.0 / (float)0x3FFF - 40.0 ;
+    return( status ) ;
+}
+
+void HIH6130::readRegs(int addr, uint8_t * data, int len) {
+    char t[1] = {addr};
+    m_i2c.write(m_addr, t, 1, true);
+    m_i2c.read(m_addr, (char *)data, len);
+}
+
+void HIH6130::writeRegs(uint8_t * data, int len) {
+    m_i2c.write(m_addr, (char *)data, len);
+}