Diff: BSP/Components/hts221/hts221.c

Revision:

0:9e645e6ed2ce

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BSP/Components/hts221/hts221.c	Tue Aug 19 07:13:15 2014 +0000
@@ -0,0 +1,420 @@
+/**
+ ******************************************************************************
+ * @file    hts221.c
+ * @author  AST Robotics Team
+ * @version V0.0.1
+ * @date    08-April-2014
+ * @brief   This file provides a set of functions needed to manage the hts221.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *   1. Redistributions of source code must retain the above copyright notice,
+ *      this list of conditions and the following disclaimer.
+ *   2. Redistributions in binary form must reproduce the above copyright notice,
+ *      this list of conditions and the following disclaimer in the documentation
+ *      and/or other materials provided with the distribution.
+ *   3. Neither the name of STMicroelectronics nor the names of its contributors
+ *      may be used to endorse or promote products derived from this software
+ *      without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+/* Includes ------------------------------------------------------------------*/
+#include "hts221.h"
+#include <math.h>
+
+/** @addtogroup BSP
+ * @{
+ */
+
+/** @addtogroup STM32F439_SENSITRON
+ * @{
+ */
+
+/** @addtogroup HTS221
+ * @{
+ */
+
+
+/** @defgroup HTS221_Private_TypesDefinitions
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @defgroup HTS221_Private_Defines
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @defgroup HTS221_Private_Macros
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @defgroup HTS221_Private_Variables
+ * @{
+ */
+
+HUM_TEMP_DrvTypeDef Hts221Drv =
+{
+ HTS221_Init,
+ HTS221_Power_OFF,
+ HTS221_ReadID,
+ HTS221_RebootCmd,
+ HTS221_INT1InterruptConfig,
+ HTS221_EnableIT,
+ HTS221_DisableIT,
+ HTS221_GetHumidity,
+ HTS221_GetTemperature
+};
+
+
+/* Temperature in degree for calibration  */
+float T0_degC, T1_degC;
+
+/* Output temperature value for calibration */
+int16_t T0_out, T1_out;
+
+
+/* Humidity for calibration  */
+float H0_rh, H1_rh;
+
+/* Output Humidity value for calibration */
+int16_t H0_T0_out, H1_T0_out;
+
+
+/**
+ * @}
+ */
+
+/** @defgroup HTS221_Private_FunctionPrototypes
+ * @{
+ */
+static void HTS221_Power_On(void);
+
+static void HTS221_Calibration(void);
+/**
+ * @}
+ */
+
+/** @defgroup HTS221_Private_Functions
+ * @{
+ */
+
+
+
+/**
+ * @brief  HTS221 Calibration procedure.
+ * @param  None
+ * @retval None
+ */
+static void HTS221_Calibration(void)
+{
+    /* Temperature Calibration */
+    /* Temperature in degree for calibration ( "/8" to obtain float) */
+    uint16_t T0_degC_x8_L, T0_degC_x8_H, T1_degC_x8_L, T1_degC_x8_H;
+    uint8_t H0_rh_x2, H1_rh_x2;
+    uint8_t tempReg[2] = {0,0};
+
+    HUM_TEMP_IO_Read(tempReg, HTS221_ADDRESS, HTS221_T0_degC_X8_ADDR, 1);
+    T0_degC_x8_L = (uint16_t)tempReg[0];
+
+    HUM_TEMP_IO_Read(tempReg, HTS221_ADDRESS, HTS221_T1_T0_MSB_X8_ADDR, 1);
+    T0_degC_x8_H = (uint16_t) (tempReg[0] & 0x03);
+
+    T0_degC = ((float)((T0_degC_x8_H<<8) | (T0_degC_x8_L)))/8;
+
+    HUM_TEMP_IO_Read(tempReg, HTS221_ADDRESS, HTS221_T1_degC_X8_ADDR, 1);
+    T1_degC_x8_L = (uint16_t)tempReg[0];
+
+    HUM_TEMP_IO_Read(tempReg, HTS221_ADDRESS, HTS221_T1_T0_MSB_X8_ADDR, 1);
+    T1_degC_x8_H = (uint16_t) (tempReg[0] & 0x0C);
+    T1_degC_x8_H = T1_degC_x8_H >> 2;
+
+    T1_degC = ((float)((T1_degC_x8_H<<8) | (T1_degC_x8_L)))/8;
+
+    HUM_TEMP_IO_Read(tempReg, HTS221_ADDRESS, HTS221_T0_OUT_L_ADDR + 0x80, 2);
+    T0_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
+
+    HUM_TEMP_IO_Read(tempReg, HTS221_ADDRESS, HTS221_T1_OUT_L_ADDR + 0x80, 2);
+    T1_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
+
+    /* Humidity Calibration */
+    /* Humidity in degree for calibration ( "/2" to obtain float) */
+
+    HUM_TEMP_IO_Read(&H0_rh_x2, HTS221_ADDRESS, HTS221_H0_RH_X2_ADDR, 1);
+
+    HUM_TEMP_IO_Read(&H1_rh_x2, HTS221_ADDRESS, HTS221_H1_RH_X2_ADDR, 1);
+
+    HUM_TEMP_IO_Read(&tempReg[0], HTS221_ADDRESS, HTS221_H0_T0_OUT_L_ADDR + 0x80, 2);
+    H0_T0_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
+
+    HUM_TEMP_IO_Read(&tempReg[0], HTS221_ADDRESS, HTS221_H1_T0_OUT_L_ADDR  + 0x80, 2);
+    H1_T0_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
+
+    H0_rh = ((float)H0_rh_x2)/2;
+    H1_rh = ((float)H1_rh_x2)/2;
+}
+
+
+/**
+ * @brief  Set HTS221 Initialization.
+ * @param  InitStruct: it contains the configuration setting for the HTS221.
+ * @retval None
+ */
+void HTS221_Init(HUM_TEMP_InitTypeDef *HTS221_Init)
+{  
+    uint8_t tmp = 0x00;
+
+    /* Configure the low level interface ---------------------------------------*/
+    HUM_TEMP_IO_Init();
+
+    HTS221_Power_On();
+
+    HTS221_Calibration();
+
+    HUM_TEMP_IO_Read(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG1_ADDR, 1);
+
+    /* Output Data Rate selection */
+    tmp &= ~(HTS221_ODR_MASK);
+    tmp |= HTS221_Init->OutputDataRate;
+
+    HUM_TEMP_IO_Write(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG1_ADDR, 1);
+}
+
+/**
+ * @brief  Read ID address of HTS221
+ * @param  Device ID address
+ * @retval ID name
+ */
+uint8_t HTS221_ReadID(void)
+{
+    uint8_t tmp;
+
+    /* Read WHO I AM register */
+    HUM_TEMP_IO_Read(&tmp, HTS221_ADDRESS, HTS221_WHO_AM_I_ADDR, 1);
+
+    /* Return the ID */
+    return (uint8_t)tmp;
+}
+
+/**
+ * @brief  Reboot memory content of HTS221
+ * @param  None
+ * @retval None
+ */
+void HTS221_RebootCmd(void)
+{
+    uint8_t tmpreg;
+
+    /* Read CTRL_REG2 register */
+    HUM_TEMP_IO_Read(&tmpreg, HTS221_ADDRESS, HTS221_CTRL_REG2_ADDR, 1);
+
+    /* Enable or Disable the reboot memory */
+    tmpreg |= HTS221_BOOT_REBOOTMEMORY;
+
+    /* Write value to MEMS CTRL_REG2 regsister */
+    HUM_TEMP_IO_Write(&tmpreg, HTS221_ADDRESS, HTS221_CTRL_REG2_ADDR, 1);
+}
+
+/**
+ * @brief Set HTS221 Interrupt INT1 configuration
+ * @param  HTS221_InterruptConfig_TypeDef: pointer to a HTS221_InterruptConfig_TypeDef
+ *         structure that contains the configuration setting for the HTS221 Interrupt.
+ * @retval None
+ */
+void HTS221_INT1InterruptConfig(uint16_t Int1Config)
+{
+
+}
+
+/**
+ * @brief  Enable INT1
+ * @retval None
+ */
+void HTS221_EnableIT(uint8_t IntPin)
+{  
+
+}
+
+/**
+ * @brief  Disable  INT1
+ * @retval None
+ */
+void HTS221_DisableIT(uint8_t IntPin)
+{  
+
+}
+
+
+/**
+ * @brief  Read HTS221 output register, and calculate the humidity.
+ * @param  pfData : Data out pointer
+ * @retval None
+ */
+void HTS221_GetHumidity(float* pfData)
+{
+    int16_t H_T_out, humidity_t;
+    uint8_t tempReg[2] = {0,0};
+    uint8_t tmp = 0x00;
+    float H_rh;
+    
+    HUM_TEMP_IO_Read(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG1_ADDR, 1);
+
+    /* Output Data Rate selection */
+    tmp &= (HTS221_ODR_MASK);
+    
+    if(tmp == 0x00){
+    
+      HUM_TEMP_IO_Read(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG2_ADDR, 1);
+
+      /* Serial Interface Mode selection */
+      tmp &= ~(HTS221_ONE_SHOT_MASK);
+      tmp |= HTS221_ONE_SHOT_START;
+
+      HUM_TEMP_IO_Write(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG2_ADDR, 1);
+    
+      do{
+      
+        HUM_TEMP_IO_Read(&tmp, HTS221_ADDRESS, HTS221_STATUS_REG_ADDR, 1);
+         
+      }while(!(tmp&&0x02));
+    
+    }
+    
+    
+    HUM_TEMP_IO_Read(&tempReg[0], HTS221_ADDRESS, HTS221_HUMIDITY_OUT_L_ADDR + 0x80, 2);
+    H_T_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
+
+    H_rh = ((float)(H_T_out - H0_T0_out))/(H1_T0_out - H0_T0_out) * (H1_rh - H0_rh) + H0_rh;
+
+    humidity_t = (uint16_t)(H_rh * pow(10,HUM_DECIMAL_DIGITS));
+
+    *pfData = ((float)humidity_t)/pow(10,HUM_DECIMAL_DIGITS);
+}
+
+/**
+ * @brief  Read HTS221 output register, and calculate the temperature.
+ * @param  pfData : Data out pointer
+ * @retval None
+ */
+void HTS221_GetTemperature(float* pfData)
+{
+    int16_t T_out, temperature_t;
+    uint8_t tempReg[2] = {0,0};
+    uint8_t tmp = 0x00;
+    float T_degC;
+    
+    HUM_TEMP_IO_Read(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG1_ADDR, 1);
+
+    /* Output Data Rate selection */
+    tmp &= (HTS221_ODR_MASK);
+    
+    if(tmp == 0x00){
+    
+      HUM_TEMP_IO_Read(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG2_ADDR, 1);
+
+      /* Serial Interface Mode selection */
+      tmp &= ~(HTS221_ONE_SHOT_MASK);
+      tmp |= HTS221_ONE_SHOT_START;
+
+      HUM_TEMP_IO_Write(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG2_ADDR, 1);
+    
+      do{
+      
+        HUM_TEMP_IO_Read(&tmp, HTS221_ADDRESS, HTS221_STATUS_REG_ADDR, 1);
+       
+      }while(!(tmp&&0x01));
+    
+    }
+
+    HUM_TEMP_IO_Read(&tempReg[0], HTS221_ADDRESS, HTS221_TEMP_OUT_L_ADDR + 0x80, 2);
+    T_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
+
+    T_degC = ((float)(T_out - T0_out))/(T1_out - T0_out) * (T1_degC - T0_degC) + T0_degC;
+
+    temperature_t = (int16_t)(T_degC * pow(10,TEMP_DECIMAL_DIGITS));
+
+    *pfData = ((float)temperature_t)/pow(10,TEMP_DECIMAL_DIGITS);
+}
+
+
+/**
+ * @brief  Exit the shutdown mode for HTS221.
+ * @retval None
+ */
+static void HTS221_Power_On()
+{
+    uint8_t tmpReg;
+
+    /* Read the register content */
+    HUM_TEMP_IO_Read(&tmpReg, HTS221_ADDRESS, HTS221_CTRL_REG1_ADDR, 1);
+
+    /* Set the power down bit */
+    tmpReg |= HTS221_MODE_ACTIVE;
+
+    /* Write register */
+    HUM_TEMP_IO_Write(&tmpReg, HTS221_ADDRESS, HTS221_CTRL_REG1_ADDR, 1);
+}
+
+/**
+ * @brief  Enter the shutdown mode for HTS221.
+ * @retval None
+ */
+void HTS221_Power_OFF()
+{
+    uint8_t tmpReg;
+
+    /* Read the register content */
+    HUM_TEMP_IO_Read(&tmpReg, HTS221_ADDRESS, HTS221_CTRL_REG1_ADDR, 1);
+
+    /* Reset the power down bit */
+    tmpReg &= ~(HTS221_MODE_ACTIVE);
+
+    /* Write register */
+    HUM_TEMP_IO_Write(&tmpReg, HTS221_ADDRESS, HTS221_CTRL_REG1_ADDR, 1);
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/     
+