diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/ccs811')
3 files changed, 781 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/ccs811/ccs811.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/ccs811/ccs811.c new file mode 100644 index 0000000..0c31977 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/ccs811/ccs811.c @@ -0,0 +1,225 @@ +/** + * Copyright (c) 2017 - 2018, Nordic Semiconductor ASA + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form, except as embedded into a Nordic + * Semiconductor ASA integrated circuit in a product or a software update for + * such product, must reproduce the above copyright notice, this list of + * conditions and the following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * 3. Neither the name of Nordic Semiconductor ASA nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 4. This software, with or without modification, must only be used with a + * Nordic Semiconductor ASA integrated circuit. + * + * 5. Any software provided in binary form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +#include "ccs811.h" + +#define SWAP_16(arg) ((arg) = (MSB_16(arg) | (LSB_16(arg) << 8))) + +ret_code_t ccs811_init(ccs811_instance_t const * p_instance) +{ + ASSERT(p_instance != NULL); + if (p_instance->p_sensor_data->p_twi_mngr->p_queue->size < CCS811_MIN_QUEUE_SIZE) + { + return NRF_ERROR_INVALID_LENGTH; + } + static uint8_t const send_msg[] = { + CCS811_REG_APP_START + }; + ret_code_t err = nrf_twi_sensor_write(p_instance->p_sensor_data, + p_instance->sensor_addr, + send_msg, + ARRAY_SIZE(send_msg), + true); + err = ccs811_drive_mode_set(p_instance, CCS811_MODE_0, false, false); + if (err != NRF_SUCCESS) + { + return err; + } + err = ccs811_env_set(p_instance, CCS811_DEFAULT_TEMPERATURE, 0, CCS811_DEFAULT_HUMIDITY, 0); + if (err != NRF_SUCCESS) + { + return err; + } + return ccs811_thr_cfg(p_instance, + CCS811_DEFAULT_LOW_THR, + CCS811_DEFAULT_HIGH_THR, + CCS811_DEFAULT_HYSTERESIS); +} + +ret_code_t ccs811_drive_mode_set(ccs811_instance_t const * p_instance, + ccs811_drive_mode_t mode, + bool drdy_en, + bool thr_en) +{ + ASSERT(p_instance != NULL); + uint8_t reg = 0; + NRF_TWI_SENSOR_REG_SET(reg, CCS811_DRIVE_MODE_MASK, CCS811_DRIVE_MODE_POS, mode); + NRF_TWI_SENSOR_REG_SET(reg, CCS811_DATA_READY_MASK, CCS811_DATA_READY_POS, drdy_en); + NRF_TWI_SENSOR_REG_SET(reg, CCS811_THRESH_MASK, CCS811_THRESH_POS, thr_en); + + uint8_t send_msg[] = { + CCS811_REG_MEAS_MODE, + reg + }; + + return nrf_twi_sensor_write(p_instance->p_sensor_data, + p_instance->sensor_addr, + send_msg, + ARRAY_SIZE(send_msg), + true); +} + +ret_code_t ccs811_alg_data_read(ccs811_instance_t const * p_instance, + ccs811_data_callback_t user_cb, + ccs811_alg_data_t * p_alg_data, + ccs811_last_data_byte_t last) +{ + ASSERT(p_instance != NULL); + ASSERT(p_alg_data != NULL); + + return nrf_twi_sensor_reg_read(p_instance->p_sensor_data, + p_instance->sensor_addr, + CCS811_REG_ALG_RESULT_DATA, + (nrf_twi_sensor_reg_cb_t) user_cb, + (uint8_t *) p_alg_data, + last); +} + +void ccs811_alg_data_process(ccs811_alg_data_t * p_alg_data) +{ + ASSERT(p_alg_data != NULL); + + SWAP_16(p_alg_data->eco2); + SWAP_16(p_alg_data->tvoc); + SWAP_16(p_alg_data->raw); +} + +ret_code_t ccs811_env_set(ccs811_instance_t const * p_instance, + int8_t temp_value, + uint16_t temp_fraction, + uint8_t hum_percent, + uint16_t hum_fraction) +{ + ASSERT(p_instance != NULL); + temp_value += CCS811_TEMPERATURE_OFFSET; + if(temp_value < 0) + { + temp_value = 0; + } + uint16_t env_temp = ( *((uint16_t *) &temp_value) << CCS811_ENV_TEMP_VALUE_POS) + | (temp_fraction & CCS811_ENV_TEMP_FRACTION_MASK); + uint16_t env_hum = ( *((uint16_t *) &hum_percent) << CCS811_ENV_HUM_PERCENT_POS) + | (hum_fraction & CCS811_ENV_HUM_FRACTION_MASK); + + uint8_t send_msg[] = { + CCS811_REG_ENV_DATA, + MSB_16(env_temp), + LSB_16(env_temp), + MSB_16(env_hum), + LSB_16(env_hum) + }; + + return nrf_twi_sensor_write(p_instance->p_sensor_data, + p_instance->sensor_addr, + send_msg, + ARRAY_SIZE(send_msg), + true); +} + +ret_code_t ccs811_thr_cfg(ccs811_instance_t const * p_instance, + uint16_t l_to_m, + uint16_t m_to_h, + uint8_t hysteresis) +{ + ASSERT(p_instance != NULL); + uint8_t send_msg[] = { + CCS811_REG_THRESHOLDS, + MSB_16(l_to_m), + LSB_16(l_to_m), + MSB_16(m_to_h), + LSB_16(m_to_h), + hysteresis + }; + + return nrf_twi_sensor_write(p_instance->p_sensor_data, + p_instance->sensor_addr, + send_msg, + ARRAY_SIZE(send_msg), + true); +} + +ret_code_t ccs811_baseline_read(ccs811_instance_t const * p_instance, + nrf_twi_sensor_reg_cb_t user_cb, + uint16_t * p_baseline) +{ + ASSERT(p_instance != NULL); + ASSERT(p_baseline != NULL); + return nrf_twi_sensor_reg_read(p_instance->p_sensor_data, + p_instance->sensor_addr, + CCS811_REG_BASELINE, + user_cb, + (uint8_t *) p_baseline, + 2); +} + +ret_code_t ccs811_baseline_set(ccs811_instance_t const * p_instance, uint16_t baseline) +{ + ASSERT(p_instance != NULL); + uint8_t * p_base = (uint8_t *) &baseline; + uint8_t send_msg[] = { + CCS811_REG_BASELINE, + p_base[0], + p_base[1] + }; + + return nrf_twi_sensor_write(p_instance->p_sensor_data, + p_instance->sensor_addr, + send_msg, + ARRAY_SIZE(send_msg), + true); +} + +ret_code_t ccs811_sw_reset(ccs811_instance_t const * p_instance) +{ + ASSERT(p_instance != NULL); + static uint8_t const send_msg[] = { + CCS811_REG_SW_RESET, + CCS811_SW_RESET_BYTE0, + CCS811_SW_RESET_BYTE1, + CCS811_SW_RESET_BYTE2, + CCS811_SW_RESET_BYTE3 + }; + + return nrf_twi_sensor_write(p_instance->p_sensor_data, + p_instance->sensor_addr, + send_msg, + ARRAY_SIZE(send_msg), + true); +} + diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/ccs811/ccs811.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/ccs811/ccs811.h new file mode 100644 index 0000000..6b7b336 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/ccs811/ccs811.h @@ -0,0 +1,297 @@ +/** + * Copyright (c) 2017 - 2018, Nordic Semiconductor ASA + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form, except as embedded into a Nordic + * Semiconductor ASA integrated circuit in a product or a software update for + * such product, must reproduce the above copyright notice, this list of + * conditions and the following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * 3. Neither the name of Nordic Semiconductor ASA nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 4. This software, with or without modification, must only be used with a + * Nordic Semiconductor ASA integrated circuit. + * + * 5. Any software provided in binary form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +#ifndef CCS811_H +#define CCS811_H + +#include "nrf_twi_sensor.h" +#include "ccs811_internal.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @brief Possible sensor addresses. + */ +#define CCS811_BASE_ADDRESS_LOW 0x5AU +#define CCS811_BASE_ADDRESS_HIGH 0x5BU + +// Minimum nrf_twi_sensor message buffer size and nrf_twi_mngr queue length. +#define CCS811_MIN_QUEUE_SIZE 6 + +// Hardware ID register value +#define CCS811_HARDWARE_ID 0x81 + +/** + * @brief Sensor driver usage. + * + * Sensor instance has to be defined first in global context using @ref CCS811_INSTANCE_DEF. + * After that it has to be initialized using @ref ccs811_init. + * At this point sensor instance is ready and all other functions can be used. + * + * Configuration functions schedule TWI operation using @ref nrf_twi_sensor module. + * After calling function, setting will be automatically send to sensor when TWI bus is free. + * + * There are designated functions to read status sensor registers e.g. @ref ccs811_status_read + * As parameters they receive function to be called after register is read, and pointer where + * register value should be stored. From that value specific parameters can be extracted + * using @ref NRF_TWI_SENSOR_REG_VAL_GET macro. + * Example: + * bool drdy = NRF_TWI_SENSOR_REG_VAL_GET(status, CCS811_DATA_READY_MASK, CCS811_DATA_READY_POS); + * + * Other functions are self-explanatory or have description on their usage. + */ + +/** + * @brief Drive mode setting. + */ +typedef enum +{ + CCS811_MODE_0,//!< CCS811_MODE_0 - Idle + CCS811_MODE_1,//!< CCS811_MODE_1 - Constant power, measure every second. + CCS811_MODE_2,//!< CCS811_MODE_2 - Pulse heating mode, measure every 10 seconds. + CCS811_MODE_3,//!< CCS811_MODE_3 - Low power pulse heating mode, measure every 60 seconds. + CCS811_MODE_4 //!< CCS811_MODE_4 - Constant power, measure every 250ms, only raw data. +} ccs811_drive_mode_t; + +/** + * @brief Last byte read from algorithm data. + * + * Used with @ref ccs811_alg_data_read function, defines to which byte data should be read. + */ +typedef enum +{ + CCS811_LAST_ECO2 = 2, + CCS811_LAST_TVOC = 4, + CCS811_LAST_STATUS, + CCS811_LAST_ERROR_ID, + CCS811_LAST_RAW = 8 +} ccs811_last_data_byte_t; + +/** + * @brief Structure for holding algorithm data. + */ +typedef struct +{ + uint16_t eco2; //!< eC02 value in ppm. + uint16_t tvoc; //!< TVOC value in ppb. + uint8_t status; //!< Status register data. + uint8_t error_id; //!< Error register data. + uint16_t raw; //!< Raw data. +} ccs811_alg_data_t; + +/** + * @brief Data callback prototype. + * + * @param[in] result Return code from TWI manager and underlying drivers. + * @param[in] p_data Pointer to sensor data. + */ +typedef void (* ccs811_data_callback_t)(ret_code_t result, ccs811_alg_data_t * p_data); + +/** + * @brief Macro that creates sensor instance. + * + * @param[in] _ccs811_inst_name Sensor instance name. + * @param[in] _p_twi_sensor Pointer to common TWI sensor instance. + * @param[in] _sensor_address Sensor base address. + */ +#define CCS811_INSTANCE_DEF(_ccs811_inst_name, _p_twi_sensor, _sensor_address) \ + CCS811_INTERNAL_INSTANCE_DEF(_ccs811_inst_name, _p_twi_sensor, _sensor_address) + +/** + * @brief Function initializing ccs811 sensor + * + * TWI manager queue length has to be at least CCS811_MIN_QUEUE_SIZE + * + * @param[in] p_instance Pointer to sensor instance created by macro + * + * @return Return error code from nrf_twi_sensor @ref nrf_twi_sensor_write + */ +ret_code_t ccs811_init(ccs811_instance_t const * p_instance); + +/** + * @brief Function for setting drive mode. + * + * @param[in] p_instance Pointer to sensor instance. + * @param[in] mode Drive mode. + * @param[in] drdy_en Enable data ready pin. + * @param[in] thr_en Enable threshold. + * + * @return Return error code from nrf_twi_sensor @ref nrf_twi_sensor_write + */ +ret_code_t ccs811_drive_mode_set(ccs811_instance_t const * p_instance, + ccs811_drive_mode_t mode, + bool drdy_en, + bool thr_en); + +/** + * @brief Function for reading sensor data. + * + * @param[in] p_instance Pointer to sensor instance. + * @param[in] user_cb Function to be called after data read. + * @param[out] p_alg_data Pointer to structure holding sensor algorithm data. + * @param[in] last Last byte to read. + * + * @return Return error code from nrf_twi_sensor @ref nrf_twi_sensor_reg_read + */ +ret_code_t ccs811_alg_data_read(ccs811_instance_t const * p_instance, + ccs811_data_callback_t user_cb, + ccs811_alg_data_t * p_alg_data, + ccs811_last_data_byte_t last); + +/** + * @brief Function for processing algorithm data + * + * @param[in/out] p_alg_data Pointer to read data to be processed. + */ +void ccs811_alg_data_process(ccs811_alg_data_t * p_alg_data); + +/** + * @brief Function for setting environment temperature. + * + * @param[in] p_instance Pointer to sensor instance. + * @param[in] temp_value Temperature value (-25 to 100 degree celsius). + * @param[in] temp_fraction Temperature fraction. + * @param[in] hum_percent Humidity percent. + * @param[in] hum_fraction Humidity fraction. + * + * @return Return error code from nrf_twi_sensor @ref nrf_twi_sensor_write + */ +ret_code_t ccs811_env_set(ccs811_instance_t const * p_instance, + int8_t temp_value, + uint16_t temp_fraction, + uint8_t hum_percent, + uint16_t hum_fraction); + +/** + * @brief Function for threshold configuration + * + * @param[in] p_instance Pointer to sensor instance. + * @param[in] l_to_m Low to medium threshold. + * @param[in] m_to_h Medium to high threshold. + * @param[in] hysteresis Hysteresis. + * + * @return Return error code from nrf_twi_sensor @ref nrf_twi_sensor_write + */ +ret_code_t ccs811_thr_cfg(ccs811_instance_t const * p_instance, + uint16_t l_to_m, + uint16_t m_to_h, + uint8_t hysteresis); + +/** + * @brief Function for reading baseline. + * + * @param[in] p_instance Pointer to sensor instance. + * @param[in] user_cb Function to be called after baseline read. + * @param[out] baseline Baseline value, single uint16_t. + * + * @return Return error code from nrf_twi_sensor @ref nrf_twi_sensor_reg_read + */ +ret_code_t ccs811_baseline_read(ccs811_instance_t const * p_instance, + nrf_twi_sensor_reg_cb_t user_cb, + uint16_t * p_baseline); + +/** + * @brief Function for setting baseline. + * + * @param[in] p_instance Pointer to sensor instance. + * @param[in] baseline Baseline value. + * + * @return Return error code from nrf_twi_sensor @ref nrf_twi_sensor_write + */ +ret_code_t ccs811_baseline_set(ccs811_instance_t const * p_instance, + uint16_t baseline); + +/** + * @brief Function commencing software reset. + * + * @param[in] p_instance Pointer to sensor instance. + * + * @note To use sensor after reset, it has to be initialized again using @ref ccs811_init function. + * + * @return Return error code from nrf_twi_sensor @ref nrf_twi_sensor_write + */ +ret_code_t ccs811_sw_reset(ccs811_instance_t const * p_instance); + + +/** + * @brief Function for reading status register. + * + * @param[in] p_instance Pointer to sensor instance. + * @param[in] user_cb Function to be called after register is read. + * @param[out] p_reg_val Pointer to register value, single uint8_t. + * + * @return Return error code from nrf_twi_sensor @ref nrf_twi_sensor_reg_read + */ +__STATIC_INLINE ret_code_t ccs811_status_read(ccs811_instance_t const * p_instance, + nrf_twi_sensor_reg_cb_t user_cb, + uint8_t * p_reg_val); + +/** + * @brief Function for reading hardware id register. + * + * @param[in] p_instance Pointer to sensor instance. + * @param[in] user_cb Function to be called after register is read. + * @param[out] p_reg_val Pointer to register value, single uint8_t. + * + * @return Return error code from nrf_twi_sensor @ref nrf_twi_sensor_reg_read + */ +__STATIC_INLINE ret_code_t ccs811_hw_id_read(ccs811_instance_t const * p_instance, + nrf_twi_sensor_reg_cb_t user_cb, + uint8_t * p_reg_val); + +/** + * @brief Function for reading error id register. + * + * @param[in] p_instance Pointer to sensor instance. + * @param[in] user_cb Function to be called after register is read. + * @param[out] p_reg_val Pointer to register value, single uint8_t. + * + * @return Return error code from nrf_twi_sensor @ref nrf_twi_sensor_reg_read + */ +__STATIC_INLINE ret_code_t ccs811_error_read(ccs811_instance_t const * p_instance, + nrf_twi_sensor_reg_cb_t user_cb, + uint8_t * p_reg_val); + +#ifdef __cplusplus +} +#endif + +#endif // CCS811_H diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/ccs811/ccs811_internal.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/ccs811/ccs811_internal.h new file mode 100644 index 0000000..423e61d --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/ccs811/ccs811_internal.h @@ -0,0 +1,259 @@ +/** + * Copyright (c) 2017 - 2018, Nordic Semiconductor ASA + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form, except as embedded into a Nordic + * Semiconductor ASA integrated circuit in a product or a software update for + * such product, must reproduce the above copyright notice, this list of + * conditions and the following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * 3. Neither the name of Nordic Semiconductor ASA nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 4. This software, with or without modification, must only be used with a + * Nordic Semiconductor ASA integrated circuit. + * + * 5. Any software provided in binary form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +#ifndef CCS811_INTERNAL_H +#define CCS811_INTERNAL_H + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @brief CCS811 sensor registers. + */ +#define CCS811_REG_STATUS 0x00 +#define CCS811_REG_MEAS_MODE 0x01 +#define CCS811_REG_ALG_RESULT_DATA 0x02 +#define CCS811_REG_RAW_DATA 0x03 +#define CCS811_REG_ENV_DATA 0x05 +#define CCS811_REG_NTC 0x06 +#define CCS811_REG_THRESHOLDS 0x10 +#define CCS811_REG_BASELINE 0x11 +#define CCS811_REG_HW_ID 0x20 +#define CCS811_REG_HW_VER 0x21 +#define CCS811_REG_FW_BOOT_VER 0x23 +#define CCS811_REG_FW_APP_VER 0x24 +#define CCS811_REG_ERROR_ID 0xE0 +#define CCS811_REG_SW_RESET 0xFF +#define CCS811_REG_APP_START 0xF4 + +/** + * @brief CCS811 Default configuration values. + */ +#define CCS811_DEFAULT_HUMIDITY 50 +#define CCS811_DEFAULT_TEMPERATURE 25 +#define CCS811_DEFAULT_LOW_THR 1500 +#define CCS811_DEFAULT_HIGH_THR 2500 +#define CCS811_DEFAULT_HYSTERESIS 50 + +/** + * @brief CCS811 Environment temperature offset. + */ +#define CCS811_TEMPERATURE_OFFSET 25 + +/** + * @brief Status register bitmasks. + */ + +// Bitmasks for FW_MODE. +#define CCS811_FW_MODE_POS 7 +#define CCS811_FW_MODE_MASK (1 << CCS811_FW_MODE_POS) + +// Bitmasks for APP_VALID. +#define CCS811_APP_VALID_POS 4 +#define CCS811_APP_VALID_MASK (1 << CCS811_APP_VALID_POS) + +// Bitmasks for DATA_READY. +#define CCS811_DATA_READY_POS 3 +#define CCS811_DATA_READY_MASK (1 << CCS811_DATA_READY_POS) + +// Bitmasks for ERROR. +#define CCS811_ERROR_POS 0 +#define CCS811_ERROR_MASK (1 << CCS811_ERROR_POS) + + +/** + * @brief Meas mode register bitmasks. + */ + +// Register validity mask. +#define CCS811_MEAS_MODE_VALID_MASK 0x83U + +// Bitmasks for DRIVE_MODE. +#define CCS811_DRIVE_MODE_POS 4 +#define CCS811_DRIVE_MODE_MASK (7 << CCS811_DRIVE_MODE_POS) + +// Bitmasks for INTERRUPT. +#define CCS811_INTERRUPT_POS 3 +#define CCS811_INTERRUPT_MASK (1 << CCS811_INTERRUPT_MASK) + +// Bitmasks for THRESH. +#define CCS811_THRESH_POS 2 +#define CCS811_THRESH_MASK (1 << CCS811_THRESH_POS) + +/** + * @brief Algorithm results data bytes. + */ + +#define CCS811_ALG_RESULT_BYTE_NUM 8 +#define CCS811_ALG_ECO2_H_BYTE 0 +#define CCS811_ALG_ECO2_L_BYTE 1 +#define CCS811_ALG_TVOC_H_BYTE 2 +#define CCS811_ALG_TVOC_L_BYTE 3 +#define CCS811_ALG_STATUS_BYTE 4 +#define CCS811_ALG_ERROR_BYTE 5 +#define CCS811_ALG_RAW_DATA1_BYTE 6 +#define CCS811_ALG_RAW_DATA2_BYTE 7 + +/** + * @brief Environment data register. + */ + +#define CCS811_ENV_HUMIDITY_H_BYTE 0 + +// Humidity percent position. +#define CCS811_ENV_HUM_PERCENT_POS 9 + +// Bitmasks for humidity fraction. +#define CCS811_ENV_HUM_FRACTION_MASK (0x01FF) + + +// Temperature value position. +#define CCS811_ENV_TEMP_VALUE_POS 9 + +// Bitmasks for temperature fraction. +#define CCS811_ENV_TEMP_FRACTION_MASK (0x01FF) + + +/** + * @brief Error register. + */ + +// Bitmasks for HEATER_SUPPLY +#define CCS811_ERROR_HEATER_SUPPLY_POS 5 +#define CCS811_ERROR_HEATER_SUPPLY_MASK (1 << CCS811_ERROR_HEATER_SUPPLY_POS) + +// Bitmasks for HEATER_FAULT +#define CCS811_ERROR_HEATER_FAULT_POS 4 +#define CCS811_ERROR_HEATER_FAULT_MASK (1 << CCS811_ERROR_HEATER_FAULT_POS) + +// Bitmasks for MAX_RESISTANCE +#define CCS811_ERROR_MAX_RESISTANCE_POS 3 +#define CCS811_ERROR_MAX_RESISTANCE_MASK (1 << CCS811_ERROR_MAX_RESISTANCE_POS) + +// Bitmasks for MEASMODE_INVALID +#define CCS811_ERROR_MEAS_MODE_POS 2 +#define CCS811_ERROR_MEAS_MODE_MASK (1 CCS811_ERROR_MEAS_MODE_POS) + +// Bitmasks for READ_REG +#define CCS811_ERROR_READ_REG_POS 1 +#define CCS811_ERROR_READ_REG_MASK (1 << CCS811_ERROR_READ_REG_POS) + +// Bitmasks for WRITE_REG +#define CCS811_ERROR_WRITE_REG_POS 0 +#define CCS811_ERROR_WRITE_REG_MASK (1 << CCS811_ERROR_WRITE_REG_POS) + +/** + * @brief Software reset register. + */ +#define CCS811_SW_RESET_BYTE0 0x11 +#define CCS811_SW_RESET_BYTE1 0xE5 +#define CCS811_SW_RESET_BYTE2 0x72 +#define CCS811_SW_RESET_BYTE3 0x8A + +/** + * @brief Structure holding sensor instance + */ +typedef struct +{ + nrf_twi_sensor_t * const p_sensor_data; + uint8_t const sensor_addr; +} ccs811_instance_t; + +/** + * @brief Macro that creates sensor instance. + */ +#define CCS811_INTERNAL_INSTANCE_DEF(_ccs811_inst_name, _p_twi_sensor, _sensor_address) \ + static ccs811_instance_t _ccs811_inst_name = \ + { \ + .p_sensor_data = _p_twi_sensor, \ + .sensor_addr = _sensor_address, \ + } + +#ifndef SUPPRESS_INLINE_IMPLEMENTATION + +__STATIC_INLINE ret_code_t ccs811_status_read(ccs811_instance_t const * p_instance, + nrf_twi_sensor_reg_cb_t user_cb, + uint8_t * p_reg_val) +{ + ASSERT(p_instance != NULL); + ASSERT(p_reg_val != NULL); + return nrf_twi_sensor_reg_read(p_instance->p_sensor_data, + p_instance->sensor_addr, + CCS811_REG_STATUS, + user_cb, + p_reg_val, + 1); +} + +__STATIC_INLINE ret_code_t ccs811_hw_id_read(ccs811_instance_t const * p_instance, + nrf_twi_sensor_reg_cb_t user_cb, + uint8_t * p_reg_val) +{ + ASSERT(p_instance != NULL); + ASSERT(p_reg_val != NULL); + return nrf_twi_sensor_reg_read(p_instance->p_sensor_data, + p_instance->sensor_addr, + CCS811_REG_HW_ID, + user_cb, + p_reg_val, + 1); +} + +__STATIC_INLINE ret_code_t ccs811_error_read(ccs811_instance_t const * p_instance, + nrf_twi_sensor_reg_cb_t user_cb, + uint8_t * p_reg_val) +{ + ASSERT(p_instance != NULL); + ASSERT(p_reg_val != NULL); + return nrf_twi_sensor_reg_read(p_instance->p_sensor_data, + p_instance->sensor_addr, + CCS811_REG_ERROR_ID, + user_cb, + p_reg_val, + 1); +} + +#endif //SUPPRESS_INLINE_IMPLEMENTATION + +#ifdef __cplusplus +} +#endif + +#endif // CCS811_INTERNAL_H |