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Components/HTS221/hts221.cpp@5:e2e603447679, 2015-05-21 (annotated)

Committer:: quentin9696
Date:: Thu May 21 11:21:58 2015 +0000
Revision:: 5:e2e603447679
Parent:: 0:528e23a13fb7

Who changed what in which revision?

User	Revision	Line number	New contents of line
quentin9696	0:528e23a13fb7	1	/**
quentin9696	0:528e23a13fb7	2	******************************************************************************
quentin9696	0:528e23a13fb7	3	* @file x_cube_mems_hts221.h
quentin9696	0:528e23a13fb7	4	* @author AST / EST
quentin9696	0:528e23a13fb7	5	* @version V0.0.1
quentin9696	0:528e23a13fb7	6	* @date 1-December-2014
quentin9696	0:528e23a13fb7	7	* @brief Header file for component HTS221
quentin9696	0:528e23a13fb7	8	******************************************************************************
quentin9696	0:528e23a13fb7	9	* @attention
quentin9696	0:528e23a13fb7	10	*
quentin9696	0:528e23a13fb7	11	* <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
quentin9696	0:528e23a13fb7	12	*
quentin9696	0:528e23a13fb7	13	* Redistribution and use in source and binary forms, with or without modification,
quentin9696	0:528e23a13fb7	14	* are permitted provided that the following conditions are met:
quentin9696	0:528e23a13fb7	15	* 1. Redistributions of source code must retain the above copyright notice,
quentin9696	0:528e23a13fb7	16	* this list of conditions and the following disclaimer.
quentin9696	0:528e23a13fb7	17	* 2. Redistributions in binary form must reproduce the above copyright notice,
quentin9696	0:528e23a13fb7	18	* this list of conditions and the following disclaimer in the documentation
quentin9696	0:528e23a13fb7	19	* and/or other materials provided with the distribution.
quentin9696	0:528e23a13fb7	20	* 3. Neither the name of STMicroelectronics nor the names of its contributors
quentin9696	0:528e23a13fb7	21	* may be used to endorse or promote products derived from this software
quentin9696	0:528e23a13fb7	22	* without specific prior written permission.
quentin9696	0:528e23a13fb7	23	*
quentin9696	0:528e23a13fb7	24	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
quentin9696	0:528e23a13fb7	25	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
quentin9696	0:528e23a13fb7	26	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
quentin9696	0:528e23a13fb7	27	* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
quentin9696	0:528e23a13fb7	28	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
quentin9696	0:528e23a13fb7	29	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
quentin9696	0:528e23a13fb7	30	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
quentin9696	0:528e23a13fb7	31	* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
quentin9696	0:528e23a13fb7	32	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
quentin9696	0:528e23a13fb7	33	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
quentin9696	0:528e23a13fb7	34	*
quentin9696	0:528e23a13fb7	35	******************************************************************************
quentin9696	0:528e23a13fb7	36	*/
quentin9696	0:528e23a13fb7	37
quentin9696	0:528e23a13fb7	38	/* Includes ------------------------------------------------------------------*/
quentin9696	0:528e23a13fb7	39	#include "mbed.h"
quentin9696	0:528e23a13fb7	40	#include "hts221.h"
quentin9696	0:528e23a13fb7	41	#include "hts221_platform.h"
quentin9696	0:528e23a13fb7	42
quentin9696	0:528e23a13fb7	43
quentin9696	0:528e23a13fb7	44	/* Temperature in degree for calibration */
quentin9696	0:528e23a13fb7	45	float T0_degC, T1_degC;
quentin9696	0:528e23a13fb7	46
quentin9696	0:528e23a13fb7	47	/* Output temperature value for calibration */
quentin9696	0:528e23a13fb7	48	int16_t T0_out, T1_out;
quentin9696	0:528e23a13fb7	49
quentin9696	0:528e23a13fb7	50
quentin9696	0:528e23a13fb7	51	/* Humidity for calibration */
quentin9696	0:528e23a13fb7	52	float H0_rh, H1_rh;
quentin9696	0:528e23a13fb7	53
quentin9696	0:528e23a13fb7	54	/* Output Humidity value for calibration */
quentin9696	0:528e23a13fb7	55	int16_t H0_T0_out, H1_T0_out;
quentin9696	0:528e23a13fb7	56
quentin9696	0:528e23a13fb7	57	/* Methods -------------------------------------------------------------------*/
quentin9696	0:528e23a13fb7	58
quentin9696	0:528e23a13fb7	59	/**
quentin9696	0:528e23a13fb7	60	* @brief Read HTS221 output register, and calculate the temperature.
quentin9696	0:528e23a13fb7	61	* @param pfData : Data out pointer
quentin9696	0:528e23a13fb7	62	* @retval None
quentin9696	0:528e23a13fb7	63	*/
quentin9696	0:528e23a13fb7	64	int HTS221::GetTemperature(float* pfData)
quentin9696	0:528e23a13fb7	65	{
quentin9696	0:528e23a13fb7	66	int16_t T_out, temperature_t;
quentin9696	0:528e23a13fb7	67	uint8_t tempReg[2] = {0,0};
quentin9696	0:528e23a13fb7	68	uint8_t tmp = 0x00;
quentin9696	0:528e23a13fb7	69	float T_degC;
quentin9696	0:528e23a13fb7	70	int ret=-1;//TODO:Define Error types?
quentin9696	0:528e23a13fb7	71
quentin9696	0:528e23a13fb7	72	if(isInitialized()==0)
quentin9696	0:528e23a13fb7	73	{
quentin9696	0:528e23a13fb7	74	return ret;
quentin9696	0:528e23a13fb7	75	}
quentin9696	0:528e23a13fb7	76
quentin9696	0:528e23a13fb7	77	ret = dev_i2c.i2c_read(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG1_ADDR, 1);
quentin9696	0:528e23a13fb7	78
quentin9696	0:528e23a13fb7	79	/* Output Data Rate selection */
quentin9696	0:528e23a13fb7	80	tmp &= (HTS221_ODR_MASK);
quentin9696	0:528e23a13fb7	81
quentin9696	0:528e23a13fb7	82	if(tmp == 0x00){
quentin9696	0:528e23a13fb7	83
quentin9696	0:528e23a13fb7	84	ret = dev_i2c.i2c_read(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG2_ADDR, 1);
quentin9696	0:528e23a13fb7	85
quentin9696	0:528e23a13fb7	86	/* Serial Interface Mode selection */
quentin9696	0:528e23a13fb7	87	tmp &= ~(HTS221_ONE_SHOT_MASK);
quentin9696	0:528e23a13fb7	88	tmp \|= HTS221_ONE_SHOT_START;
quentin9696	0:528e23a13fb7	89
quentin9696	0:528e23a13fb7	90	ret = dev_i2c.i2c_write(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG2_ADDR, 1);
quentin9696	0:528e23a13fb7	91
quentin9696	0:528e23a13fb7	92	do{
quentin9696	0:528e23a13fb7	93
quentin9696	0:528e23a13fb7	94	ret = dev_i2c.i2c_read(&tmp, HTS221_ADDRESS, HTS221_STATUS_REG_ADDR, 1);
quentin9696	0:528e23a13fb7	95	}while(!(tmp&&0x01));
quentin9696	0:528e23a13fb7	96
quentin9696	0:528e23a13fb7	97	}
quentin9696	0:528e23a13fb7	98
quentin9696	0:528e23a13fb7	99	ret = dev_i2c.i2c_read(&tempReg[0], HTS221_ADDRESS , HTS221_TEMP_OUT_L_ADDR + 0x80, 2);
quentin9696	0:528e23a13fb7	100	T_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
quentin9696	0:528e23a13fb7	101
quentin9696	0:528e23a13fb7	102	T_degC = ((float)(T_out - T0_out))/(T1_out - T0_out) * (T1_degC - T0_degC) + T0_degC;
quentin9696	0:528e23a13fb7	103
quentin9696	0:528e23a13fb7	104	temperature_t = (int16_t)(T_degC * pow((double)10,(double)TEMP_DECIMAL_DIGITS));
quentin9696	0:528e23a13fb7	105
quentin9696	0:528e23a13fb7	106	*pfData = ((float)temperature_t)/pow((double)10,(double)TEMP_DECIMAL_DIGITS);
quentin9696	0:528e23a13fb7	107
quentin9696	0:528e23a13fb7	108	return ret;
quentin9696	0:528e23a13fb7	109	}
quentin9696	0:528e23a13fb7	110
quentin9696	0:528e23a13fb7	111
quentin9696	0:528e23a13fb7	112	/**
quentin9696	0:528e23a13fb7	113	* @brief Read HTS221 output register, and calculate the humidity.
quentin9696	0:528e23a13fb7	114	* @param pfData : Data out pointer
quentin9696	0:528e23a13fb7	115	* @retval None
quentin9696	0:528e23a13fb7	116	*/
quentin9696	0:528e23a13fb7	117	int HTS221::GetHumidity(float* pfData)
quentin9696	0:528e23a13fb7	118	{
quentin9696	0:528e23a13fb7	119	int16_t H_T_out, humidity_t;
quentin9696	0:528e23a13fb7	120	uint8_t tempReg[2] = {0,0};
quentin9696	0:528e23a13fb7	121	uint8_t tmp = 0x00;
quentin9696	0:528e23a13fb7	122	float H_rh;
quentin9696	0:528e23a13fb7	123	int ret;
quentin9696	0:528e23a13fb7	124
quentin9696	0:528e23a13fb7	125	if(isInitialized()==0)
quentin9696	0:528e23a13fb7	126	{
quentin9696	0:528e23a13fb7	127	pfData = 0;
quentin9696	0:528e23a13fb7	128	return -1;
quentin9696	0:528e23a13fb7	129	}
quentin9696	0:528e23a13fb7	130
quentin9696	0:528e23a13fb7	131	//HUM_TEMP_IO_Read(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG1_ADDR, 1);
quentin9696	0:528e23a13fb7	132	ret = dev_i2c.i2c_read(&tmp, HTS221_ADDRESS , HTS221_CTRL_REG1_ADDR, 1);
quentin9696	0:528e23a13fb7	133
quentin9696	0:528e23a13fb7	134	/* Output Data Rate selection */
quentin9696	0:528e23a13fb7	135	tmp &= (HTS221_ODR_MASK);
quentin9696	0:528e23a13fb7	136
quentin9696	0:528e23a13fb7	137	if(tmp == 0x00){
quentin9696	0:528e23a13fb7	138
quentin9696	0:528e23a13fb7	139	//HUM_TEMP_IO_Read(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG2_ADDR, 1);
quentin9696	0:528e23a13fb7	140	ret = dev_i2c.i2c_read(&tmp, HTS221_ADDRESS , HTS221_CTRL_REG2_ADDR, 1);
quentin9696	0:528e23a13fb7	141
quentin9696	0:528e23a13fb7	142	/* Serial Interface Mode selection */
quentin9696	0:528e23a13fb7	143	tmp &= ~(HTS221_ONE_SHOT_MASK);
quentin9696	0:528e23a13fb7	144	tmp \|= HTS221_ONE_SHOT_START;
quentin9696	0:528e23a13fb7	145
quentin9696	0:528e23a13fb7	146	//HUM_TEMP_IO_Write(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG2_ADDR, 1);
quentin9696	0:528e23a13fb7	147	ret = dev_i2c.i2c_write(&tmp, HTS221_ADDRESS , HTS221_CTRL_REG2_ADDR, 1);
quentin9696	0:528e23a13fb7	148
quentin9696	0:528e23a13fb7	149	do{
quentin9696	0:528e23a13fb7	150
quentin9696	0:528e23a13fb7	151	//HUM_TEMP_IO_Read(&tmp, HTS221_ADDRESS, HTS221_STATUS_REG_ADDR, 1);
quentin9696	0:528e23a13fb7	152	ret = dev_i2c.i2c_read(&tmp, HTS221_ADDRESS , HTS221_STATUS_REG_ADDR, 1);
quentin9696	0:528e23a13fb7	153
quentin9696	0:528e23a13fb7	154	}while(!(tmp&&0x02));
quentin9696	0:528e23a13fb7	155
quentin9696	0:528e23a13fb7	156	}
quentin9696	0:528e23a13fb7	157
quentin9696	0:528e23a13fb7	158
quentin9696	0:528e23a13fb7	159	//HUM_TEMP_IO_Read(&tempReg[0], HTS221_ADDRESS, HTS221_HUMIDITY_OUT_L_ADDR + 0x80, 2);
quentin9696	0:528e23a13fb7	160	ret = dev_i2c.i2c_read(&tempReg[0], HTS221_ADDRESS , HTS221_HUMIDITY_OUT_L_ADDR + 0x80, 2);
quentin9696	0:528e23a13fb7	161	H_T_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
quentin9696	0:528e23a13fb7	162
quentin9696	0:528e23a13fb7	163	H_rh = ((float)(H_T_out - H0_T0_out))/(H1_T0_out - H0_T0_out) * (H1_rh - H0_rh) + H0_rh;
quentin9696	0:528e23a13fb7	164
quentin9696	0:528e23a13fb7	165	humidity_t = (uint16_t)(H_rh * pow((double)10,(double)HUM_DECIMAL_DIGITS));
quentin9696	0:528e23a13fb7	166
quentin9696	0:528e23a13fb7	167	*pfData = ((float)humidity_t)/pow((double)10,(double)HUM_DECIMAL_DIGITS);
quentin9696	0:528e23a13fb7	168
quentin9696	0:528e23a13fb7	169	return ret;
quentin9696	0:528e23a13fb7	170	}
quentin9696	0:528e23a13fb7	171
quentin9696	0:528e23a13fb7	172
quentin9696	0:528e23a13fb7	173	/**
quentin9696	0:528e23a13fb7	174	* @brief Read ID address of HTS221
quentin9696	0:528e23a13fb7	175	* @param Device ID address
quentin9696	0:528e23a13fb7	176	* @retval ID name
quentin9696	0:528e23a13fb7	177	*/
quentin9696	0:528e23a13fb7	178	uint8_t HTS221::ReadID(void)
quentin9696	0:528e23a13fb7	179	{
quentin9696	0:528e23a13fb7	180	uint8_t tmp;
quentin9696	0:528e23a13fb7	181	int ret;
quentin9696	0:528e23a13fb7	182
quentin9696	0:528e23a13fb7	183	/* Read WHO I AM register */
quentin9696	0:528e23a13fb7	184	//HUM_TEMP_IO_Read(&tmp, HTS221_ADDRESS, HTS221_WHO_AM_I_ADDR, 1);
quentin9696	0:528e23a13fb7	185	ret = dev_i2c.i2c_read(&tmp, HTS221_ADDRESS, HTS221_WHO_AM_I_ADDR, 1);
quentin9696	0:528e23a13fb7	186
quentin9696	0:528e23a13fb7	187	/* Return the ID */
quentin9696	0:528e23a13fb7	188	return ((ret == 0) ? (uint8_t)tmp : 0);
quentin9696	0:528e23a13fb7	189	}
quentin9696	0:528e23a13fb7	190
quentin9696	0:528e23a13fb7	191	/**
quentin9696	0:528e23a13fb7	192	* @brief Set HTS221 Initialization.
quentin9696	0:528e23a13fb7	193	* @param InitStruct: it contains the configuration setting for the HTS221.
quentin9696	0:528e23a13fb7	194	* @retval None
quentin9696	0:528e23a13fb7	195	*/
quentin9696	0:528e23a13fb7	196	void HTS221::Init() {
quentin9696	0:528e23a13fb7	197
quentin9696	0:528e23a13fb7	198	uint8_t tmp = 0x00;
quentin9696	0:528e23a13fb7	199	int ret;
quentin9696	0:528e23a13fb7	200
quentin9696	0:528e23a13fb7	201	Power_ON();
quentin9696	0:528e23a13fb7	202
quentin9696	0:528e23a13fb7	203	HTS221_Calibration();
quentin9696	0:528e23a13fb7	204
quentin9696	0:528e23a13fb7	205	//HUM_TEMP_IO_Read(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG1_ADDR, 1);
quentin9696	0:528e23a13fb7	206	ret = dev_i2c.i2c_read(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG1_ADDR, 1);
quentin9696	0:528e23a13fb7	207
quentin9696	0:528e23a13fb7	208	if (ret == 0)
quentin9696	0:528e23a13fb7	209	{
quentin9696	0:528e23a13fb7	210	/* Output Data Rate selection */
quentin9696	0:528e23a13fb7	211	tmp &= ~(HTS221_ODR_MASK);
quentin9696	0:528e23a13fb7	212	tmp \|= HTS221_ODR_12_5Hz;
quentin9696	0:528e23a13fb7	213
quentin9696	0:528e23a13fb7	214	//HUM_TEMP_IO_Write(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG1_ADDR, 1);
quentin9696	0:528e23a13fb7	215	ret = dev_i2c.i2c_write(&tmp, HTS221_ADDRESS, HTS221_CTRL_REG1_ADDR, 1);
quentin9696	0:528e23a13fb7	216	}
quentin9696	0:528e23a13fb7	217
quentin9696	0:528e23a13fb7	218	if (ret == 0)
quentin9696	0:528e23a13fb7	219	{
quentin9696	0:528e23a13fb7	220	if(ReadID() == I_AM_HTS221)
quentin9696	0:528e23a13fb7	221	{
quentin9696	0:528e23a13fb7	222	HumTempInitialized = 1;
quentin9696	0:528e23a13fb7	223	//ret = HUM_TEMP_OK;
quentin9696	0:528e23a13fb7	224	}
quentin9696	0:528e23a13fb7	225	}
quentin9696	0:528e23a13fb7	226
quentin9696	0:528e23a13fb7	227	return;
quentin9696	0:528e23a13fb7	228	}
quentin9696	0:528e23a13fb7	229
quentin9696	0:528e23a13fb7	230	int HTS221::Power_ON() {
quentin9696	0:528e23a13fb7	231
quentin9696	0:528e23a13fb7	232	uint8_t tmpReg;
quentin9696	0:528e23a13fb7	233
quentin9696	0:528e23a13fb7	234	/* Read the register content */
quentin9696	0:528e23a13fb7	235	int ret;
quentin9696	0:528e23a13fb7	236	ret = dev_i2c.i2c_read(&tmpReg, HTS221_ADDRESS, HTS221_CTRL_REG1_ADDR, 1);
quentin9696	0:528e23a13fb7	237	if(ret) return ret;
quentin9696	0:528e23a13fb7	238
quentin9696	0:528e23a13fb7	239	/* Set the power down bit */
quentin9696	0:528e23a13fb7	240	tmpReg \|= HTS221_MODE_ACTIVE;
quentin9696	0:528e23a13fb7	241
quentin9696	0:528e23a13fb7	242	/* Write register */
quentin9696	0:528e23a13fb7	243	ret = dev_i2c.i2c_write(&tmpReg, HTS221_ADDRESS, HTS221_CTRL_REG1_ADDR, 1);
quentin9696	0:528e23a13fb7	244	if(ret) return ret;
quentin9696	0:528e23a13fb7	245	return ret;
quentin9696	0:528e23a13fb7	246	}
quentin9696	0:528e23a13fb7	247
quentin9696	0:528e23a13fb7	248	int HTS221::HTS221_Calibration() {
quentin9696	0:528e23a13fb7	249
quentin9696	0:528e23a13fb7	250	if(HumTempInitialized == 1)
quentin9696	0:528e23a13fb7	251	{
quentin9696	0:528e23a13fb7	252	return 1; //TODO: Error Codes definitions
quentin9696	0:528e23a13fb7	253	}
quentin9696	0:528e23a13fb7	254
quentin9696	0:528e23a13fb7	255	/* Temperature Calibration */
quentin9696	0:528e23a13fb7	256	/* Temperature in degree for calibration ( "/8" to obtain float) */
quentin9696	0:528e23a13fb7	257	uint16_t T0_degC_x8_L, T0_degC_x8_H, T1_degC_x8_L, T1_degC_x8_H;
quentin9696	0:528e23a13fb7	258	uint8_t H0_rh_x2, H1_rh_x2;
quentin9696	0:528e23a13fb7	259	uint8_t tempReg[2] = {0,0};
quentin9696	0:528e23a13fb7	260
quentin9696	0:528e23a13fb7	261	int ret;
quentin9696	0:528e23a13fb7	262	ret = dev_i2c.i2c_read(tempReg, HTS221_ADDRESS, HTS221_T0_degC_X8_ADDR, 1);
quentin9696	0:528e23a13fb7	263	if(ret) return ret;
quentin9696	0:528e23a13fb7	264
quentin9696	0:528e23a13fb7	265	T0_degC_x8_L = (uint16_t)tempReg[0];
quentin9696	0:528e23a13fb7	266
quentin9696	0:528e23a13fb7	267	ret = dev_i2c.i2c_read(tempReg, HTS221_ADDRESS, HTS221_T1_T0_MSB_X8_ADDR, 1);
quentin9696	0:528e23a13fb7	268	if(ret) return ret;
quentin9696	0:528e23a13fb7	269	T0_degC_x8_H = (uint16_t) (tempReg[0] & 0x03);
quentin9696	0:528e23a13fb7	270
quentin9696	0:528e23a13fb7	271	T0_degC = ((float)((T0_degC_x8_H<<8) \| (T0_degC_x8_L)))/8;
quentin9696	0:528e23a13fb7	272
quentin9696	0:528e23a13fb7	273	ret = dev_i2c.i2c_read(tempReg, HTS221_ADDRESS, HTS221_T1_degC_X8_ADDR, 1);
quentin9696	0:528e23a13fb7	274	T1_degC_x8_L = (uint16_t)tempReg[0];
quentin9696	0:528e23a13fb7	275
quentin9696	0:528e23a13fb7	276	ret = dev_i2c.i2c_read(tempReg, HTS221_ADDRESS, HTS221_T1_T0_MSB_X8_ADDR, 1);
quentin9696	0:528e23a13fb7	277	T1_degC_x8_H = (uint16_t) (tempReg[0] & 0x0C);
quentin9696	0:528e23a13fb7	278	T1_degC_x8_H = T1_degC_x8_H >> 2;
quentin9696	0:528e23a13fb7	279
quentin9696	0:528e23a13fb7	280	T1_degC = ((float)((T1_degC_x8_H<<8) \| (T1_degC_x8_L)))/8;
quentin9696	0:528e23a13fb7	281
quentin9696	0:528e23a13fb7	282	ret = dev_i2c.i2c_read(tempReg, HTS221_ADDRESS, HTS221_T0_OUT_L_ADDR + 0x80, 2);
quentin9696	0:528e23a13fb7	283	T0_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
quentin9696	0:528e23a13fb7	284
quentin9696	0:528e23a13fb7	285	ret = dev_i2c.i2c_read(tempReg, HTS221_ADDRESS, HTS221_T1_OUT_L_ADDR + 0x80, 2);
quentin9696	0:528e23a13fb7	286	T1_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
quentin9696	0:528e23a13fb7	287
quentin9696	0:528e23a13fb7	288	/* Humidity Calibration */
quentin9696	0:528e23a13fb7	289	/* Humidity in degree for calibration ( "/2" to obtain float) */
quentin9696	0:528e23a13fb7	290
quentin9696	0:528e23a13fb7	291	ret = dev_i2c.i2c_read(&H0_rh_x2, HTS221_ADDRESS, HTS221_H0_RH_X2_ADDR, 1);
quentin9696	0:528e23a13fb7	292
quentin9696	0:528e23a13fb7	293	ret = dev_i2c.i2c_read(&H1_rh_x2, HTS221_ADDRESS, HTS221_H1_RH_X2_ADDR, 1);
quentin9696	0:528e23a13fb7	294
quentin9696	0:528e23a13fb7	295	ret = dev_i2c.i2c_read(&tempReg[0], HTS221_ADDRESS, HTS221_H0_T0_OUT_L_ADDR + 0x80, 2);
quentin9696	0:528e23a13fb7	296	H0_T0_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
quentin9696	0:528e23a13fb7	297
quentin9696	0:528e23a13fb7	298	ret = dev_i2c.i2c_read(&tempReg[0], HTS221_ADDRESS, HTS221_H1_T0_OUT_L_ADDR + 0x80, 2);
quentin9696	0:528e23a13fb7	299	H1_T0_out = ((((int16_t)tempReg[1]) << 8)+(int16_t)tempReg[0]);
quentin9696	0:528e23a13fb7	300
quentin9696	0:528e23a13fb7	301	H0_rh = ((float)H0_rh_x2)/2;
quentin9696	0:528e23a13fb7	302	H1_rh = ((float)H1_rh_x2)/2;
quentin9696	0:528e23a13fb7	303
quentin9696	0:528e23a13fb7	304	return ret;
quentin9696	0:528e23a13fb7	305	}

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Type:	Program
Created:	27 Sep 2015
Imports:	2
Forks:	0
Commits:	6
Dependents:	2
Dependencies:	0
Followers:	10

Components/HTS221/hts221.cpp@5:e2e603447679, 2015-05-21 (annotated)

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