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v3.5.3

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- Changed the compensation equation formulas to use shifting operation
 - Updated the "bme680_get_profile_dur" API
 - Fixed Checkpatch and made linux compatible
 - Fixed bug of temperature compensation in pressure
 - Updated self test APIs
This commit is contained in:
Bosch Sensortec
2017-11-15 11:05:50 +01:00
parent 2a51b9c0c1
commit 94fd057adf
7 changed files with 189 additions and 163 deletions
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25
Self test/bme680_selftest.c
View File

@@ -40,8 +40,8 @@
* patent rights of the copyright holder.
*
* File bme680_selftest.c
* @date 5 Jul 2017
* @version 3.5.1
* @date 10 Oct 2017
* @version 3.5.2
*
*/
@@ -53,7 +53,7 @@
#include "bme680_selftest.h"
#define MIN_TEMPERATURE INT16_C(0) /* 0 degree Celsius */
#define MAX_TEMPERATURE INT16_C(4000) /* 40 degree Celsius */
#define MAX_TEMPERATURE INT16_C(6000) /* 60 degree Celsius */
#define MIN_PRESSURE UINT32_C(90000) /* 900 hecto Pascals */
#define MAX_PRESSURE UINT32_C(110000) /* 1100 hecto Pascals */
@@ -63,7 +63,7 @@
#define HEATR_DUR 2000
#define N_MEAS 6
#define LOW_TEMP 200
#define LOW_TEMP 150
#define HIGH_TEMP 350
/*!
@@ -124,9 +124,9 @@ int8_t bme680_self_test(struct bme680_dev *dev)
if (rslt == BME680_OK) {
if (i % 2 == 0)
t_dev.gas_sett.heatr_temp = LOW_TEMP; /* Lower temperature */
else
t_dev.gas_sett.heatr_temp = HIGH_TEMP; /* Higher temperature */
else
t_dev.gas_sett.heatr_temp = LOW_TEMP; /* Lower temperature */
rslt = bme680_set_sensor_settings(settings_sel, &t_dev);
@@ -169,15 +169,16 @@ static int8_t analyze_sensor_data(struct bme680_field_data *data, uint8_t n_meas
self_test_failed++;
for (i = 0; i < n_meas; i++) /* Every gas measurement should be valid */
if (!(data[i].status & (BME680_GASM_VALID_MSK | BME680_HEAT_STAB_MSK)))
if (!(data[i].status & BME680_GASM_VALID_MSK))
self_test_failed++;
for (i = 2; i < n_meas; i += 2) {
/* Invert formula to get integer values for centroid resistance, i.e. > 1 */
cent_res = (data[i - 2].gas_resistance + data[i].gas_resistance) / (2 * data[i - 1].gas_resistance);
}
/* 3 cycles heating are completed(HT1/LT1, HT2/LT2,HT3/LT3)
centroid gas ratio = 2*HT3 / (LT2+LT3) < 0.5*/
/* Invert formula to get integer values for centroid resistance */
if (n_meas >= 6)
cent_res = (data[3].gas_resistance + data[5].gas_resistance) / (2 * data[4].gas_resistance);
if ((cent_res < 3) || (cent_res > 20)) /* 0.05 > cent_res^-1 < 0.03 */
if ((cent_res < 2)) /*cent_res^-1 < 0.5 */
self_test_failed++;
if (self_test_failed)

4
Self test/bme680_selftest.h
View File

@@ -40,8 +40,8 @@
* patent rights of the copyright holder.
*
* @file bme680_selftest.h
* @date 5 Jul 2017
* @version 3.5.1
* @date 10 Oct 2017
* @version 3.5.2
* @brief
*
*/