Revision 0:89151affda00, committed 2017-03-29

Comitter:

TaylorGy

Date:

Wed Mar 29 03:09:54 2017 +0000

Commit message:

driver for TH02 sensor

Changed in this revision

diff -r 000000000000 -r 89151affda00 driver_mbed_TH02.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/driver_mbed_TH02.cpp	Wed Mar 29 03:09:54 2017 +0000
@@ -0,0 +1,187 @@
+/*
+ * TH02_dev.cpp
+ * Driver for DIGITAL I2C HUMIDITY AND TEMPERATURE SENSOR
+ *  
+ * Copyright (c) 2014 seeed technology inc.
+ * Website    : www.seeed.cc
+ * Author     : Oliver Wang
+ * Create Time: April 2014
+ * Change Log :
+ *
+ * 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.
+ */
+
+/****************************************************************************/
+/***        Include files                                                 ***/
+/****************************************************************************/
+#include "driver_mbed_TH02.h"
+// #include <Wire.h>
+// #include <Arduino.h>
+
+/* Use Serial IIC */
+#ifdef SERIAL_IIC
+#endif
+
+TH02_dev myTH02;
+I2C i2cth02(PB_9, PB_8);
+/****************************************************************************/
+/***       Local Variable                                                 ***/
+/****************************************************************************/
+
+
+/****************************************************************************/
+/***       Class member Functions                                         ***/
+/****************************************************************************/
+
+void TH02_dev::begin(void)
+{
+    /* Start IIC */
+    // Wire.begin();
+	/* TH02 don't need to software reset */
+	printf("System Start !\r\n\r\n");
+}
+
+float TH02_dev::ReadTemperature(void)
+{    
+    /* Start a new temperature conversion */
+	TH02_IIC_WriteReg(REG_CONFIG, CMD_MEASURE_TEMP);	 	 
+    //delay(100);
+	/* Wait until conversion is done */
+	while(!isAvailable());
+	uint16_t value = TH02_IIC_ReadData();
+	
+	value = value >> 2;
+	/* 
+	  Formula:
+      Temperature(C) = (Value/32) - 50	  
+	*/	
+	float temper = (value/32.0)-50.0;
+	
+	return temper;
+}
+ 
+float TH02_dev::ReadHumidity(void)
+{
+ /* Start a new humility conversion */
+	TH02_IIC_WriteReg(REG_CONFIG, CMD_MEASURE_HUMI);
+	
+	/* Wait until conversion is done */
+	//delay(100);
+	while(!isAvailable());
+	uint16_t value = TH02_IIC_ReadData();
+	
+	value = value >> 4;
+ 
+	/* 
+	  Formula:
+      Humidity(%) = (Value/16) - 24	  
+	*/	
+
+	float humility = (value/16.0)-24.0;
+	
+	return humility;
+}
+
+/****************************************************************************/
+/***       Local Functions                                                ***/
+/****************************************************************************/
+uint8_t TH02_dev::isAvailable()
+{
+    uint8_t status =  TH02_IIC_ReadReg(REG_STATUS);
+	if(status & STATUS_RDY_MASK)
+	{
+	    return 0;    //ready
+	}
+	else
+	{
+	    return 1;    //not ready yet
+	}
+}
+
+void TH02_dev::TH02_IIC_WriteCmd(uint8_t u8Cmd)
+{		
+	char cmd = u8Cmd;
+	/* Port to arduino */
+	// Wire.beginTransmission(TH02_I2C_DEV_ID);
+	// Wire.write(u8Cmd);
+	// Wire.endTransmission();
+	i2cth02.write(TH02_I2C_DEV_ID, &cmd, 1);
+
+}
+
+uint8_t TH02_dev::TH02_IIC_ReadReg(uint8_t u8Reg)
+{
+    /* Port to arduino */
+    char Temp = 0;
+	
+	/* Send a register reading command */
+    TH02_IIC_WriteCmd(u8Reg);	
+		 
+	// Wire.requestFrom(TH02_I2C_DEV_ID, 1);	 
+	// while(Wire.available())
+	// {
+	//     Temp = Wire.read();	 
+	// }
+
+	i2cth02.read(TH02_I2C_DEV_ID, &Temp, 1);
+		
+	return Temp;
+} 
+
+void TH02_dev::TH02_IIC_WriteReg(uint8_t u8Reg,uint8_t u8Data)
+{           
+	// Wire.beginTransmission(TH02_I2C_DEV_ID);	 
+	// Wire.write(u8Reg);	 
+	// Wire.write(u8Data);	 
+	// Wire.endTransmission();	 
+	char cmd[2];
+	cmd[0] = u8Reg;
+	cmd[1] = u8Data;
+	i2cth02.write(TH02_I2C_DEV_ID, cmd, 2);
+}
+
+uint16_t TH02_dev::TH02_IIC_ReadData(void)
+{                        
+	/* Port to arduino */	 
+	uint16_t Temp = TH02_IIC_ReadData2byte(); 
+	return Temp;
+}
+
+uint16_t TH02_dev::TH02_IIC_ReadData2byte()
+{
+    uint16_t TempData = 0;
+	// uint16_t tmpArray[3]={0};
+	char tmpArray[3];
+
+	TH02_IIC_WriteCmd(REG_DATA_H);	
+	
+	// Wire.requestFrom(TH02_I2C_DEV_ID, 3);	 
+	// while(Wire.available())
+	// {
+	//     tmpArray[cnt] = (uint16_t)Wire.read();        	        	
+	// 	cnt++;
+	// }
+	i2cth02.read(TH02_I2C_DEV_ID, tmpArray, 3);
+
+	/* MSB */
+	TempData = (tmpArray[1]<<8)|(tmpArray[2]); 
+	return TempData;
+}
\ No newline at end of file

diff -r 000000000000 -r 89151affda00 driver_mbed_TH02.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/driver_mbed_TH02.h	Wed Mar 29 03:09:54 2017 +0000
@@ -0,0 +1,82 @@
+/*
+ * TH02_dev.h
+ * Driver for DIGITAL I2C HUMIDITY AND TEMPERATURE SENSOR
+ *  
+ * Copyright (c) 2014 seeed technology inc.
+ * Website    : www.seeed.cc
+ * Author     : Oliver Wang
+ * Create Time: April 2014
+ * Change Log :
+ *
+ * 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.
+ */
+ 
+#ifndef _TH02_DEV_H
+#define _TH02_DEV_H
+
+/****************************************************************************/
+/***        Including Files                                               ***/
+/****************************************************************************/
+// #include <Wire.h>
+// #include <Arduino.h>
+ # include "mbed.h"
+
+/****************************************************************************/
+/***        Macro Definitions                                             ***/
+/****************************************************************************/
+// #define TH02_I2C_DEV_ID      0x40
+const int TH02_I2C_DEV_ID =  0x40<<1;
+//Address for mbed
+
+#define REG_STATUS           0x00 
+#define REG_DATA_H           0x01
+#define REG_DATA_L           0x02
+#define REG_CONFIG           0x03
+#define REG_ID               0x11
+
+#define STATUS_RDY_MASK      0x01    //poll RDY,0 indicate the conversion is done
+
+#define CMD_MEASURE_HUMI     0x01    //perform a humility measurement
+#define CMD_MEASURE_TEMP     0x11    //perform a temperature measurement
+
+#define TH02_WR_REG_MODE      0xC0
+#define TH02_RD_REG_MODE      0x80
+/****************************************************************************/
+/***        Class Definition                                              ***/
+/****************************************************************************/
+class TH02_dev
+{
+public:
+	void begin();
+	uint8_t isAvailable();
+	float ReadTemperature(void);
+	float ReadHumidity(void);
+private:
+	void TH02_IIC_WriteCmd(uint8_t u8Cmd);
+	uint8_t TH02_IIC_ReadReg(uint8_t u8Reg);
+	void TH02_IIC_WriteReg(uint8_t u8Reg,uint8_t u8Data);
+	uint16_t TH02_IIC_ReadData(void);
+	uint16_t TH02_IIC_ReadData2byte(void);
+};
+
+extern TH02_dev myTH02;
+
+#endif  // _TH02_DEV_H
\ No newline at end of file