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drivers/sensors: Adds new driver for ds18b20 sensore module
Signed-off-by: Marco Krahl <ocram.lhark@gmail.com>
This commit is contained in:
Marco Krahl
Xiang Xiao
@@ -171,6 +171,35 @@ config SENSORS_DHTXX
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---help---
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Enable driver support for the DHTxx humidity/temperature sensor.
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config SENSORS_DS18B20
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bool "Maxim Integrated DS18B20 Temperature Sensor support"
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default n
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select 1WIRE
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---help---
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Enable driver support for the DS18B20 temperature sensor.
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config SENSORS_DS18B20_POLL
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bool "Enables polling sensor data"
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depends on SENSORS_DS18B20
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default n
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---help---
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Enables polling of sensor.
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config SENSORS_DS18B20_POLL_INTERVAL
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int "Polling interval in microseconds, default 1 sec"
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depends on SENSORS_DS18B20 && SENSORS_DS18B20_POLL
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default 1000000
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range 0 4294967295
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---help---
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The interval until a new sensor measurement will be triggered.
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config SENSORS_DS18B20_THREAD_STACKSIZE
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int "Worker thread stack size"
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depends on SENSORS_DS18B20 && SENSORS_DS18B20_POLL
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default 1024
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---help---
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The stack size for the worker thread.
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config SENSORS_FXOS8700CQ
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bool "NXP FXOS8700CQ Motion Sensor support"
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default n
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@@ -260,6 +260,16 @@ endif
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endif # CONFIG_SPI
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# These drivers depend on 1WIRE support
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ifeq ($(CONFIG_1WIRE),y)
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ifeq ($(CONFIG_SENSORS_DS18B20),y)
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CSRCS += ds18b20.c
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endif
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endif # CONFIG_1WIRE
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ifeq ($(CONFIG_SENSORS_MPU60X0),y)
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CSRCS += mpu60x0.c
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endif
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File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,95 @@
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/****************************************************************************
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* include/nuttx/sensors/ds18b20.h
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* Character driver for DS18B20 Digital Temperature Module.
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_SENSORS_DS18B20_H
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#define __INCLUDE_NUTTX_SENSORS_DS18B20_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#if defined(CONFIG_1WIRE) && defined(CONFIG_SENSORS_DS18B20)
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define DS18B20_DEVICE_FAMILY (0x28)
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#define DS18B20_CMD_CONVERTT (0x44)
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#define DS18B20_CMD_COPYSPAD (0x48)
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#define DS18B20_CMD_RECALL (0xb8)
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#define DS18B20_CMD_READPOWS (0xb4)
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/****************************************************************************
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* Public Types
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****************************************************************************/
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struct onewire_master_s;
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struct ds18b20_alarm_s
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{
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int8_t thigh; /* Upper alarm temperature */
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int8_t tlow; /* Lower alarm temperature */
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# ifdef CONFIG_SENSORS_DS18B20_POLL
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bool wakeup; /* Wakeup poll requests only when alarm detected */
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# endif
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};
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Name: ds18b20_register
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*
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* Description:
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* Register the DS18B20 character device.
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*
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* Input Parameters:
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* devno - The user specifies device number, from 0.
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* onewire - An instance of the 1wire interface to communicate with DS18B20
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* sensor.
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* romcode - The ROM code of the DS18B20.
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno value on failure.
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****************************************************************************/
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int ds18b20_register(int devno, FAR struct onewire_master_s *dev,
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uint64_t romcode);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* CONFIG_1WIRE && CONFIG_SENSORS_DS18B20 */
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#endif /* __INCLUDE_NUTTX_SENSORS_DS18B20_H */
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@@ -229,26 +229,33 @@
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#define SNIOC_READADDR SNIOC_READID /* Arg: uint8_t* pointer */
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/* IOCTL commands unique to the DS18B20 */
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/* SNIOC_SETRESOLUTION */ /* Arg: uint8_t value */
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#define SNIOC_READROMCODE _SNIOC(0x0067) /* Arg: uint64_t* pointer */
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#define SNIOC_SETALARM _SNIOC(0x0068) /* Arg: struct ds18b20_alarm_s* */
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/* Command: SNIOC_ACTIVATE
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* Description: Enable or disable sensor
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* Argument: true or false.
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*/
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#define SNIOC_ACTIVATE _SNIOC(0x0067)
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#define SNIOC_ACTIVATE _SNIOC(0x0080)
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/* Command: SNIOC_SET_INTERVAL
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* Description: Set interval between samples
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* Argument: This is the interval pointer, in microseconds
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*/
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#define SNIOC_SET_INTERVAL _SNIOC(0x0068)
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#define SNIOC_SET_INTERVAL _SNIOC(0x0081)
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/* Command: SNIOC_BATCH
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* Description: Set batch latency between batch data.
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* Argument: This is the latency pointer, in microseconds
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*/
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#define SNIOC_BATCH _SNIOC(0x0069)
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#define SNIOC_BATCH _SNIOC(0x0082)
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/* Command: SNIOC_GET_NEVENTBUF
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* Description: the number of sensor events that sensor buffer of upper half
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@@ -265,7 +272,7 @@
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* See sensor.h(struct sensor_lower_half_s buffer_bytes).
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*/
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#define SNIOC_GET_NEVENTBUF _SNIOC(0x0070)
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#define SNIOC_GET_NEVENTBUF _SNIOC(0x0083)
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/* Command: SNIOC_SET_BUFFER_NUMBER
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* Description: Set the number of events intermediate circualr buffer can
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@@ -275,6 +282,6 @@
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* circualr buffer can hold by this ioctl command.
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*/
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#define SNIOC_SET_BUFFER_NUMBER _SNIOC(0x0071)
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#define SNIOC_SET_BUFFER_NUMBER _SNIOC(0x0084)
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#endif /* __INCLUDE_NUTTX_SENSORS_IOCTL_H */
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