Diff: driver_mbed_HP20x.cpp

Revision:

0:2ee0bc82e7b8

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/driver_mbed_HP20x.cpp	Wed Mar 29 03:09:38 2017 +0000
@@ -0,0 +1,266 @@
+/*
+ * File name  : HP20x_dev.cpp
+ * Description: Driver for I2C PRECISION BAROMETER AND ALTIMETER [HP206C]
+ * Author     : Oliver Wang from Seeed studio
+ * Version    : V0.1
+ * Create Time: 2014/04
+ * Change Log :
+*/
+
+/****************************************************************************/
+/***        Include files                                                 ***/
+/****************************************************************************/
+#include "driver_mbed_HP20x.h"
+// #include <Wire.h>
+// #include <Arduino.h>
+#include "driver_mbed_KalmanFilter.h"
+/****************************************************************************/
+/***       Local Variable                                                 ***/
+/****************************************************************************/
+HP20x_dev HP20x;
+I2C i2c_HP20x(PB_3, PB_10);
+
+/****************************************************************************/
+/***       Class member Functions                                         ***/
+/****************************************************************************/
+/*
+ **@ Function name: HP20x_dev
+ **@ Description: Constructor
+ **@ Input: none
+ **@ OutPut: none
+ **@ Retval: none
+*/
+HP20x_dev::HP20x_dev()
+{
+    OSR_CFG = HP20X_CONVERT_OSR1024;
+    OSR_ConvertTime = 25; 
+}
+
+/*
+ **@ Function name: begin
+ **@ Description: Initialize HP20x_dev
+ **@ Input: none
+ **@ OutPut: none
+ **@ Retval: none
+*/
+void HP20x_dev::begin()
+{
+  // Wire.begin();
+  /* Reset HP20x_dev */
+  HP20x.HP20X_IIC_WriteCmd(HP20X_SOFT_RST);
+}
+
+/*
+ **@ Function name: isAvailable
+ **@ Description: Indicate whether it's available
+ **@ Input: none
+ **@ OutPut: none
+ **@ Retval: uchar 
+*/
+uchar HP20x_dev::isAvailable()
+{
+  uchar ret = HP20x.HP20X_IIC_ReadReg(REG_PARA);
+  return ret;
+}
+/*
+ **@ Function name: ReadTemperature
+ **@ Description: Read Temperature from HP20x_dev
+ **@ Input:
+ **@ OutPut:
+ **@ Retval:
+*/
+ulong HP20x_dev::ReadTemperature(void)
+{
+     
+	HP20X_IIC_WriteCmd(HP20X_WR_CONVERT_CMD|OSR_CFG);	//ADC convert
+ 
+    wait_ms(int(OSR_ConvertTime));			                    //difference OSR_CFG will be difference OSR_ConvertTime
+    HP20X_IIC_WriteCmd(HP20X_READ_T);      
+    ulong Temperature = HP20X_IIC_ReadData();
+    return Temperature;		
+}
+
+/*
+ **@ Function name: ReadPressure
+ **@ Description: Read Pressure value
+ **@ Input:
+ **@ OutPut: 
+ **@ Retval: value
+*/
+ 
+ulong HP20x_dev::ReadPressure(void)
+{
+    HP20X_IIC_WriteCmd(HP20X_WR_CONVERT_CMD|OSR_CFG);
+    wait_ms(int(OSR_ConvertTime));
+    HP20X_IIC_WriteCmd(HP20X_READ_P);
+    ulong Pressure = HP20X_IIC_ReadData();             
+    return Pressure;
+} 
+
+/*
+ **@ Function name: ReadAltitude
+ **@ Description: Read Pressure value
+ **@ Input:
+ **@ OutPut: 
+ **@ Retval: value
+*/
+ulong HP20x_dev::ReadAltitude(void)
+{
+    HP20X_IIC_WriteCmd(HP20X_READ_A);
+    ulong Altitude = HP20X_IIC_ReadData();   
+    return Altitude;		
+} 
+ 
+/*
+void ReadPressureAndTemperature(void)
+{
+        HP20X_IIC_WriteCmd(HP20X_WR_CONVERT_CMD|OSR_CFG);
+        Timer_Delayxms(OSR_ConvertTime*2);
+        HP20X_IIC_WriteCmd(HP20X_READ_PT);
+        
+        Temperature=HP20X_IIC_ReadData();
+       
+        Pressure=HP20X_IIC_ReadData3byte();       
+}
+
+void IIC_ReadAltitudeAndTemperature(void)
+{
+
+       HP20X_IIC_WriteCmd(HP20X_WR_CONVERT_CMD|OSR_CFG);
+       Timer_Delayxms(OSR_ConvertTime*2);
+       HP20X_IIC_WriteCmd(HP20X_READ_AT);
+        
+        Temperature=HP20X_IIC_ReadData();
+        IIC_ACK();
+        Altitude=HP20X_IIC_ReadData3byte();
+        IIC_NoAck();      
+        IIC_Stop();  
+                   
+}*/
+/****************************************************************************/
+/***       Local Functions                                                ***/
+/****************************************************************************/
+
+/*
+ **@ Function name: HP20X_IIC_WriteCmd
+ **@ Description:
+ **@ Input:
+ **@ OutPut:
+ **@ Retval:
+*/
+void HP20x_dev::HP20X_IIC_WriteCmd(uchar uCmd)
+{		
+	/* Port to arduino */
+	// Wire.beginTransmission(HP20X_I2C_DEV_ID);
+	// Wire.write(uCmd);
+	// Wire.endTransmission();
+	char cmd = uCmd;
+	i2c_HP20x.write(HP20X_I2C_DEV_ID, &cmd, 1);
+}
+
+/*
+ **@ Function name: HP20X_IIC_ReadReg
+ **@ Description:
+ **@ Input:
+ **@ OutPut:
+ **@ Retval:  
+*/
+uchar HP20x_dev::HP20X_IIC_ReadReg(uchar bReg)
+{
+    /* Port to arduino */
+    char Temp;
+	
+	/* Send a register reading command */
+    HP20X_IIC_WriteCmd(bReg|HP20X_RD_REG_MODE);	
+	 
+	// Wire.requestFrom(HP20X_I2C_DEV_ID, 1);	 
+	// while(Wire.available())
+	// {
+	//     Temp = Wire.read();
+	// }
+	i2c_HP20x.read(HP20X_I2C_DEV_ID, &Temp, 1);
+	 
+	return Temp;
+} 
+/*
+ **@ Function name: HP20X_IIC_WriteReg
+ **@ Description:
+ **@ Input:
+ **@ OutPut:
+ **@ Retval:
+*/
+void HP20x_dev::HP20X_IIC_WriteReg(uchar bReg,uchar bData)
+{       
+	// Wire.beginTransmission(HP20X_I2C_DEV_ID);
+	// Wire.write(bReg|HP20X_WR_REG_MODE);
+	// Wire.write(bData);
+	// Wire.endTransmission();
+	char cmd[2];
+	cmd[0] = bReg|HP20X_WR_REG_MODE;
+	cmd[1] = bData;
+	i2c_HP20x.write(HP20X_I2C_DEV_ID, cmd, 2);
+}
+
+
+/*
+ **@ Function name: HP20X_IIC_ReadData
+ **@ Description:
+ **@ Input:
+ **@ OutPut:
+ **@ Retval:
+*/
+ulong HP20x_dev::HP20X_IIC_ReadData(void)
+{                        
+	/* Port to arduino */	 
+	ulong Temp = HP20X_IIC_ReadData3byte(); 
+	return Temp;
+}
+
+/*
+ **@ Function name: HP20X_IIC_ReadData3byte
+ **@ Description:
+ **@ Input:
+ **@ OutPut:
+ **@ Retval:
+*/
+ulong HP20x_dev::HP20X_IIC_ReadData3byte(void)
+{	
+	ulong TempData = 0;
+	char tmpArray[3];
+	
+	/* Require three bytes from slave */
+	// Wire.requestFrom(HP20X_I2C_DEV_ID, 3);      
+
+ //    while(Wire.available())     // slave may send less than requested
+ //    { 
+ //      uchar c = Wire.read();    // receive a byte as character	  	  
+	//   tmpArray[cnt] = (ulong)c;
+	//   cnt++;
+	// }
+	i2c_HP20x.read(HP20X_I2C_DEV_ID, tmpArray, 3);
+	
+	/* MSB */
+	TempData = tmpArray[0]<<16 | tmpArray[1]<<8 | tmpArray[2];
+
+	
+    if(TempData&0x800000)
+    {
+	    TempData|=0xff000000;
+	}
+
+ /* 	// 24 bit to 32 bit 
+	if(TempData&0x800000)
+	{
+	  // 1:minus 
+	  TempData |= 0x80000000;
+	  TempData &= 0xff7fffff;
+	}
+	else
+	{
+	  // 0:plus 
+	  //do noting
+	}  */
+	return TempData;
+} 
+
+/**************************************END OF FILE**************************************/
\ No newline at end of file