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Posted to commits@nuttx.apache.org by xi...@apache.org on 2023/08/18 15:00:39 UTC
[nuttx-apps] branch master updated: examples/bme680: Added test program for the BME680 sensor
This is an automated email from the ASF dual-hosted git repository.
xiaoxiang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/nuttx-apps.git
The following commit(s) were added to refs/heads/master by this push:
new 4739b18cb examples/bme680: Added test program for the BME680 sensor
4739b18cb is described below
commit 4739b18cb1cd6d5bf5a54e9a5befd360e4481df3
Author: simonatoaca <si...@gmail.com>
AuthorDate: Fri Aug 18 13:48:41 2023 +0300
examples/bme680: Added test program for the BME680 sensor
The program is an example on how to poll the sensor for data when
all its sub-sensors are enabled.
Signed-off-by: simonatoaca <si...@gmail.com>
---
examples/bme680/CMakeLists.txt | 33 ++++++++
examples/bme680/Kconfig | 30 +++++++
examples/bme680/Make.defs | 23 ++++++
examples/bme680/Makefile | 34 ++++++++
examples/bme680/bme680_main.c | 176 +++++++++++++++++++++++++++++++++++++++++
5 files changed, 296 insertions(+)
diff --git a/examples/bme680/CMakeLists.txt b/examples/bme680/CMakeLists.txt
new file mode 100644
index 000000000..2da7f2a11
--- /dev/null
+++ b/examples/bme680/CMakeLists.txt
@@ -0,0 +1,33 @@
+# ##############################################################################
+# apps/examples/bme680/CMakeLists.txt
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more contributor
+# license agreements. See the NOTICE file distributed with this work for
+# additional information regarding copyright ownership. The ASF licenses this
+# file to you under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+#
+# ##############################################################################
+
+if(CONFIG_EXAMPLES_BME680)
+ nuttx_add_application(
+ NAME
+ ${CONFIG_EXAMPLES_BME680_PROGNAME}
+ PRIORITY
+ ${CONFIG_EXAMPLES_BME680_PRIORITY}
+ STACKSIZE
+ ${CONFIG_EXAMPLES_BME680_STACKSIZE}
+ MODULE
+ ${CONFIG_EXAMPLES_BME680}
+ SRCS
+ bme680_main.c)
+endif()
diff --git a/examples/bme680/Kconfig b/examples/bme680/Kconfig
new file mode 100644
index 000000000..3b32f1844
--- /dev/null
+++ b/examples/bme680/Kconfig
@@ -0,0 +1,30 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+config EXAMPLES_BME680
+ tristate "BME680 sensor example"
+ default n
+ depends on SENSORS_BME680
+ ---help---
+ Enable the BME680 example
+
+if EXAMPLES_BME680
+
+config EXAMPLES_BME680_PROGNAME
+ string "Program name"
+ default "bme680"
+ ---help---
+ This is the name of the program that will be used when the NSH ELF
+ program is installed.
+
+config EXAMPLES_BME680_PRIORITY
+ int "BME680 task priority"
+ default 100
+
+config EXAMPLES_BME680_STACKSIZE
+ int "BME680 stack size"
+ default DEFAULT_TASK_STACKSIZE
+
+endif
diff --git a/examples/bme680/Make.defs b/examples/bme680/Make.defs
new file mode 100644
index 000000000..2578737a2
--- /dev/null
+++ b/examples/bme680/Make.defs
@@ -0,0 +1,23 @@
+############################################################################
+# apps/examples/bme680/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+ifneq ($(CONFIG_EXAMPLES_BME680),)
+CONFIGURED_APPS += $(APPDIR)/examples/bme680
+endif
diff --git a/examples/bme680/Makefile b/examples/bme680/Makefile
new file mode 100644
index 000000000..de2e631cf
--- /dev/null
+++ b/examples/bme680/Makefile
@@ -0,0 +1,34 @@
+############################################################################
+# apps/examples/bme680/Makefile
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/Make.defs
+
+# BME680 Barometer sensor example built-in application info
+
+PROGNAME = $(CONFIG_EXAMPLES_BME680_PROGNAME)
+PRIORITY = $(CONFIG_EXAMPLES_BME680_PRIORITY)
+STACKSIZE = $(CONFIG_EXAMPLES_BME680_STACKSIZE)
+MODULE = $(CONFIG_EXAMPLES_BME680)
+
+# BME680 Barometer sensor example
+
+MAINSRC = bme680_main.c
+
+include $(APPDIR)/Application.mk
diff --git a/examples/bme680/bme680_main.c b/examples/bme680/bme680_main.c
new file mode 100644
index 000000000..da7905ad9
--- /dev/null
+++ b/examples/bme680/bme680_main.c
@@ -0,0 +1,176 @@
+/****************************************************************************
+ * apps/examples/bme680/bme680_main.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/sensors/sensor.h>
+#include <nuttx/sensors/bme680.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <time.h>
+
+#define NB_LOWERHALFS 3
+
+/* Structure used when polling the sub-sensors */
+
+struct data
+{
+ void *data_struct;
+ uint16_t data_size;
+};
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * bme680_main
+ ****************************************************************************/
+
+int main(int argc, FAR char *argv[])
+{
+ int baro_fd;
+ int hum_fd;
+ int gas_fd;
+ uint16_t seconds;
+ int ret;
+
+ /* This example works when all of the sub-sensors of
+ * the BME680 are enabled.
+ */
+
+ struct sensor_baro baro_data;
+ struct sensor_humi humi_data;
+ struct sensor_gas gas_data;
+
+ /* Open each lowerhalf file to be able to read the data.
+ * When the pressure measurement is deactivated, sensor_temp0 should
+ * be opened instead (to get the temperature measurement).
+ */
+
+ baro_fd = open("/dev/uorb/sensor_baro0", O_RDONLY | O_NONBLOCK);
+ if (baro_fd < 0)
+ {
+ printf("Failed to open barometer lowerhalf.\n");
+ return -1;
+ }
+
+ hum_fd = open("/dev/uorb/sensor_humi0", O_RDONLY | O_NONBLOCK);
+ if (hum_fd < 0)
+ {
+ printf("Failed to open humidity sensor lowerhalf.\n");
+ return -1;
+ }
+
+ gas_fd = open("/dev/uorb/sensor_gas0", O_RDONLY | O_NONBLOCK);
+ if (gas_fd < 0)
+ {
+ printf("Failed to open gas lowerhalf.\n");
+ return -1;
+ }
+
+ /* Configure the sensor */
+
+ struct bme680_config_s config;
+
+ /* Set oversampling */
+
+ config.temp_os = BME680_OS_2X;
+ config.press_os = BME680_OS_16X;
+ config.filter_coef = BME680_FILTER_COEF3;
+ config.hum_os = BME680_OS_1X;
+
+ /* Set heater parameters */
+
+ config.target_temp = 300; /* degrees Celsius */
+ config.amb_temp = 30; /* degrees Celsius */
+ config.heater_duration = 100; /* milliseconds */
+
+ config.nb_conv = 0;
+
+ ret = ioctl(baro_fd, SNIOC_CALIBRATE, &config);
+
+ struct pollfd pfds[] = {
+ {.fd = baro_fd, .events = POLLIN},
+ {.fd = hum_fd, .events = POLLIN},
+ {.fd = gas_fd, .events = POLLIN}
+ };
+
+ struct data sensor_data[] = {
+ {.data_struct = &baro_data, .data_size = sizeof(struct sensor_baro)},
+ {.data_struct = &humi_data, .data_size = sizeof(struct sensor_humi)},
+ {.data_struct = &gas_data, .data_size = sizeof(struct sensor_gas)}
+ };
+
+ seconds = 5 * 60;
+
+ /* Wait ~5 minutes for the sensor to accomodate to the surroundings.
+ * The first measurements are not accurate. The longer the wait, the more
+ * accurate the results are.
+ */
+
+ while (seconds > 0)
+ {
+ ret = poll(pfds, NB_LOWERHALFS, -1);
+ if (ret < 0)
+ {
+ perror("Could not poll sensor.");
+ return ret;
+ }
+
+ /* Go through lowerhalfs and read the data */
+
+ for (int i = 0; i < NB_LOWERHALFS; i++)
+ {
+ if (pfds[i].revents & POLLIN)
+ {
+ ret = read(pfds[i].fd, sensor_data[i].data_struct,
+ sensor_data[i].data_size);
+
+ if (ret != sensor_data[i].data_size)
+ {
+ perror("Could not read from sub-sensor.");
+ return ret;
+ }
+ }
+ }
+
+ seconds -= 3;
+ }
+
+ printf("Temperature [C] = %f\n"
+ "Pressure [hPa] = %f\n"
+ "Humidity [rH] = %f\n"
+ "Gas resistance [kOhm] = %f\n",
+ baro_data.temperature, baro_data.pressure,
+ humi_data.humidity, gas_data.gas_resistance);
+
+ close(baro_fd);
+ close(hum_fd);
+ close(gas_fd);
+
+ return 0;
+}