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sensors: add ccs811 eCO2/TVOC driver

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Implement the ams CCS811 digital gas sensor

Assisted-by: Claude Code
Signed-off-by: raiden00pl <raiden00@railab.me>
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raiden00pl 2023-05-31 19:38:51 +02:00 • committed by GUIDINGLI
parent f14e5f4d28
commit e570885eb7
5 changed files with 773 additions and 0 deletions
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include/nuttx/sensors/ccs811.h Normal file
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/****************************************************************************
* include/nuttx/sensors/ccs811.h
*
* 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.
*
****************************************************************************/
#ifndef __INCLUDE_NUTTX_SENSORS_CCS811_H
#define __INCLUDE_NUTTX_SENSORS_CCS811_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdbool.h>
#include <nuttx/i2c/i2c_master.h>
/****************************************************************************
* Public Types
****************************************************************************/
struct ccs811_config_s
{
/* Optional board callback to control the CCS811 nWAKE line around each
* I2C transaction (on=true asserts nWAKE, on=false releases it). Leave
* NULL when nWAKE is tied low in hardware.
*/
CODE void (*wake)(bool on);
};
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#ifdef __cplusplus
extern "C"
{
#endif
/****************************************************************************
* Name: ccs811_register_uorb
*
* Description:
* Register the CCS811 eCO2 and TVOC sensors as UORB devices.
*
* Input Parameters:
* devno - The device number, used to build the device path.
* i2c - The I2C bus driver instance.
* addr - The I2C address of the CCS811.
* config - Board-specific configuration (may be NULL).
*
* Returned Value:
* Zero (OK) on success; a negated errno value on failure.
*
****************************************************************************/
int ccs811_register_uorb(int devno, FAR struct i2c_master_s *i2c,
uint8_t addr,
FAR const struct ccs811_config_s *config);
#ifdef __cplusplus
}
#endif
#endif /* __INCLUDE_NUTTX_SENSORS_CCS811_H */