diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/ccs811/ccs811.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/ccs811/ccs811.c | 225 |
1 files changed, 225 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); +} + |