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finally can compile the bme driver

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Nam Tran
2020-09-13 18:00:01 -05:00
parent e968df1ca4
commit 6268ccd49f
9 changed files with 2020 additions and 8 deletions
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3
components/bme280/CMakeLists.txt Normal file
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idf_component_register(SRCS "bme280.c" "bme280_sup.c"
INCLUDE_DIRS "."
REQUIRES i2c)

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components/bme280/bme280.c Normal file
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components/bme280/bme280.h Normal file
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/**
* Copyright (C) 2016 - 2017 Bosch Sensortec GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form 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.
*
* Neither the name of the copyright holder nor the names of the
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
* 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
*
* The information provided is believed to be accurate and reliable.
* The copyright holder assumes no responsibility
* for the consequences of use
* of such information nor for any infringement of patents or
* other rights of third parties which may result from its use.
* No license is granted by implication or otherwise under any patent or
* patent rights of the copyright holder.
*
* @file bme280.h
* @date 22 Nov 2017
* @version 3.3.2
* @brief
*
*/
/*! @file bme280.h
@brief Sensor driver for BME280 sensor */
/*!
* @defgroup BME280 SENSOR API
* @{*/
#ifndef BME280_H_
#define BME280_H_
/*! CPP guard */
#ifdef __cplusplus
extern "C" {
#endif
/* Header includes */
#include "bme280_defs.h"
/*!
* @brief This API is the entry point.
* It reads the chip-id and calibration data from the sensor.
*
* @param[in,out] dev : Structure instance of bme280_dev
*
* @return Result of API execution status
* @retval zero -> Success / +ve value -> Warning / -ve value -> Error
*/
int8_t bme280_init(struct bme280_dev *dev);
/*!
* @brief This API writes the given data to the register address
* of the sensor.
*
* @param[in] reg_addr : Register address from where the data to be written.
* @param[in] reg_data : Pointer to data buffer which is to be written
* in the sensor.
* @param[in] len : No of bytes of data to write..
* @param[in] dev : Structure instance of bme280_dev.
*
* @return Result of API execution status
* @retval zero -> Success / +ve value -> Warning / -ve value -> Error
*/
int8_t bme280_set_regs(uint8_t *reg_addr, const uint8_t *reg_data, uint8_t len, const struct bme280_dev *dev);
/*!
* @brief This API reads the data from the given register address of the sensor.
*
* @param[in] reg_addr : Register address from where the data to be read
* @param[out] reg_data : Pointer to data buffer to store the read data.
* @param[in] len : No of bytes of data to be read.
* @param[in] dev : Structure instance of bme280_dev.
*
* @return Result of API execution status
* @retval zero -> Success / +ve value -> Warning / -ve value -> Error
*/
int8_t bme280_get_regs(uint8_t reg_addr, uint8_t *reg_data, uint16_t len, const struct bme280_dev *dev);
/*!
* @brief This API sets the oversampling, filter and standby duration
* (normal mode) settings in the sensor.
*
* @param[in] dev : Structure instance of bme280_dev.
* @param[in] desired_settings : Variable used to select the settings which
* are to be set in the sensor.
*
* @note : Below are the macros to be used by the user for selecting the
* desired settings. User can do OR operation of these macros for configuring
* multiple settings.
*
* Macros | Functionality
* -----------------------|----------------------------------------------
* BME280_OSR_PRESS_SEL | To set pressure oversampling.
* BME280_OSR_TEMP_SEL | To set temperature oversampling.
* BME280_OSR_HUM_SEL | To set humidity oversampling.
* BME280_FILTER_SEL | To set filter setting.
* BME280_STANDBY_SEL | To set standby duration setting.
*
* @return Result of API execution status
* @retval zero -> Success / +ve value -> Warning / -ve value -> Error.
*/
int8_t bme280_set_sensor_settings(uint8_t desired_settings, const struct bme280_dev *dev);
/*!
* @brief This API gets the oversampling, filter and standby duration
* (normal mode) settings from the sensor.
*
* @param[in,out] dev : Structure instance of bme280_dev.
*
* @return Result of API execution status
* @retval zero -> Success / +ve value -> Warning / -ve value -> Error.
*/
int8_t bme280_get_sensor_settings(struct bme280_dev *dev);
/*!
* @brief This API sets the power mode of the sensor.
*
* @param[in] dev : Structure instance of bme280_dev.
* @param[in] sensor_mode : Variable which contains the power mode to be set.
*
* sensor_mode | Macros
* ---------------------|-------------------
* 0 | BME280_SLEEP_MODE
* 1 | BME280_FORCED_MODE
* 3 | BME280_NORMAL_MODE
*
* @return Result of API execution status
* @retval zero -> Success / +ve value -> Warning / -ve value -> Error
*/
int8_t bme280_set_sensor_mode(uint8_t sensor_mode,
const struct bme280_dev *dev);
/*!
* @brief This API gets the power mode of the sensor.
*
* @param[in] dev : Structure instance of bme280_dev.
* @param[out] sensor_mode : Pointer variable to store the power mode.
*
* sensor_mode | Macros
* ---------------------|-------------------
* 0 | BME280_SLEEP_MODE
* 1 | BME280_FORCED_MODE
* 3 | BME280_NORMAL_MODE
*
* @return Result of API execution status
* @retval zero -> Success / +ve value -> Warning / -ve value -> Error
*/
int8_t bme280_get_sensor_mode(uint8_t *sensor_mode, const struct bme280_dev *dev);
/*!
* @brief This API performs the soft reset of the sensor.
*
* @param[in] dev : Structure instance of bme280_dev.
*
* @return Result of API execution status
* @retval zero -> Success / +ve value -> Warning / -ve value -> Error.
*/
int8_t bme280_soft_reset(const struct bme280_dev *dev);
/*!
* @brief This API reads the pressure, temperature and humidity data from the
* sensor, compensates the data and store it in the bme280_data structure
* instance passed by the user.
*
* @param[in] sensor_comp : Variable which selects which data to be read from
* the sensor.
*
* sensor_comp | Macros
* ------------|-------------------
* 1 | BME280_PRESS
* 2 | BME280_TEMP
* 4 | BME280_HUM
* 7 | BME280_ALL
*
* @param[out] comp_data : Structure instance of bme280_data.
* @param[in] dev : Structure instance of bme280_dev.
*
* @return Result of API execution status
* @retval zero -> Success / +ve value -> Warning / -ve value -> Error
*/
int8_t bme280_get_sensor_data(uint8_t sensor_comp, struct bme280_data *comp_data, struct bme280_dev *dev);
/*!
* @brief This API is used to parse the pressure, temperature and
* humidity data and store it in the bme280_uncomp_data structure instance.
*
* @param[in] reg_data : Contains register data which needs to be parsed
* @param[out] uncomp_data : Contains the uncompensated pressure, temperature
* and humidity data.
*/
void bme280_parse_sensor_data(const uint8_t *reg_data, struct bme280_uncomp_data *uncomp_data);
/*!
* @brief This API is used to compensate the pressure and/or
* temperature and/or humidity data according to the component selected by the
* user.
*
* @param[in] sensor_comp : Used to select pressure and/or temperature and/or
* humidity.
* @param[in] uncomp_data : Contains the uncompensated pressure, temperature and
* humidity data.
* @param[out] comp_data : Contains the compensated pressure and/or temperature
* and/or humidity data.
* @param[in] calib_data : Pointer to the calibration data structure.
*
* @return Result of API execution status.
* @retval zero -> Success / -ve value -> Error
*/
int8_t bme280_compensate_data(uint8_t sensor_comp, const struct bme280_uncomp_data *uncomp_data,
struct bme280_data *comp_data, struct bme280_calib_data *calib_data);
#ifdef __cplusplus
}
#endif /* End of CPP guard */
#endif /* BME280_H_ */
/** @}*/

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components/bme280/bme280_defs.h Normal file
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/**
* Copyright (C) 2016 - 2017 Bosch Sensortec GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form 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.
*
* Neither the name of the copyright holder nor the names of the
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
* 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
*
* The information provided is believed to be accurate and reliable.
* The copyright holder assumes no responsibility
* for the consequences of use
* of such information nor for any infringement of patents or
* other rights of third parties which may result from its use.
* No license is granted by implication or otherwise under any patent or
* patent rights of the copyright holder.
*
* @file bme280_defs.h
* @date 22 Nov 2017
* @version 3.3.2
* @brief
*
*/
/*! @file bme280_defs.h
@brief Sensor driver for BME280 sensor */
/*!
* @defgroup BME280 SENSOR API
* @brief
* @{*/
#ifndef BME280_DEFS_H_
#define BME280_DEFS_H_
/********************************************************/
/* header includes */
#ifdef __KERNEL__
#include <linux/types.h>
#include <linux/kernel.h>
#else
#include <stdint.h>
#include <stddef.h>
#endif
/********************************************************/
/*! @name Common macros */
/********************************************************/
#if !defined(UINT8_C) && !defined(INT8_C)
#define INT8_C(x) S8_C(x)
#define UINT8_C(x) U8_C(x)
#endif
#if !defined(UINT16_C) && !defined(INT16_C)
#define INT16_C(x) S16_C(x)
#define UINT16_C(x) U16_C(x)
#endif
#if !defined(INT32_C) && !defined(UINT32_C)
#define INT32_C(x) S32_C(x)
#define UINT32_C(x) U32_C(x)
#endif
#if !defined(INT64_C) && !defined(UINT64_C)
#define INT64_C(x) S64_C(x)
#define UINT64_C(x) U64_C(x)
#endif
/**@}*/
/**\name C standard macros */
#ifndef NULL
#ifdef __cplusplus
#define NULL 0
#else
#define NULL ((void *) 0)
#endif
#endif
/********************************************************/
#ifndef BME280_FLOAT_ENABLE
#define BME280_FLOAT_ENABLE
#endif
#ifndef BME280_FLOAT_ENABLE
#ifndef BME280_64BIT_ENABLE
// #define BME280_64BIT_ENABLE // EPV
#endif
#endif
#ifndef TRUE
#define TRUE UINT8_C(1)
#endif
#ifndef FALSE
#define FALSE UINT8_C(0)
#endif
/**\name I2C addresses */
#define BME280_I2C_ADDR_PRIM UINT8_C(0x76)
#define BME280_I2C_ADDR_SEC UINT8_C(0x77)
/**\name BME280 chip identifier */
#define BME280_CHIP_ID UINT8_C(0x60)
/**\name Register Address */
#define BME280_CHIP_ID_ADDR UINT8_C(0xD0)
#define BME280_RESET_ADDR UINT8_C(0xE0)
#define BME280_TEMP_PRESS_CALIB_DATA_ADDR UINT8_C(0x88)
#define BME280_HUMIDITY_CALIB_DATA_ADDR UINT8_C(0xE1)
#define BME280_PWR_CTRL_ADDR UINT8_C(0xF4)
#define BME280_CTRL_HUM_ADDR UINT8_C(0xF2)
#define BME280_CTRL_MEAS_ADDR UINT8_C(0xF4)
#define BME280_CONFIG_ADDR UINT8_C(0xF5)
#define BME280_DATA_ADDR UINT8_C(0xF7)
/**\name API success code */
#define BME280_OK INT8_C(0)
/**\name API error codes */
#define BME280_E_NULL_PTR INT8_C(-1)
#define BME280_E_DEV_NOT_FOUND INT8_C(-2)
#define BME280_E_INVALID_LEN INT8_C(-3)
#define BME280_E_COMM_FAIL INT8_C(-4)
#define BME280_E_SLEEP_MODE_FAIL INT8_C(-5)
/**\name API warning codes */
#define BME280_W_INVALID_OSR_MACRO INT8_C(1)
/**\name Macros related to size */
#define BME280_TEMP_PRESS_CALIB_DATA_LEN UINT8_C(26)
#define BME280_HUMIDITY_CALIB_DATA_LEN UINT8_C(7)
#define BME280_P_T_H_DATA_LEN UINT8_C(8)
/**\name Sensor power modes */
#define BME280_SLEEP_MODE UINT8_C(0x00)
#define BME280_FORCED_MODE UINT8_C(0x01)
#define BME280_NORMAL_MODE UINT8_C(0x03)
/**\name Macro to combine two 8 bit data's to form a 16 bit data */
#define BME280_CONCAT_BYTES(msb, lsb) (((uint16_t)msb << 8) | (uint16_t)lsb)
#define BME280_SET_BITS(reg_data, bitname, data) \
((reg_data & ~(bitname##_MSK)) | \
((data << bitname##_POS) & bitname##_MSK))
#define BME280_SET_BITS_POS_0(reg_data, bitname, data) \
((reg_data & ~(bitname##_MSK)) | \
(data & bitname##_MSK))
#define BME280_GET_BITS(reg_data, bitname) ((reg_data & (bitname##_MSK)) >> \
(bitname##_POS))
#define BME280_GET_BITS_POS_0(reg_data, bitname) (reg_data & (bitname##_MSK))
/**\name Macros for bit masking */
#define BME280_SENSOR_MODE_MSK UINT8_C(0x03)
#define BME280_SENSOR_MODE_POS UINT8_C(0x00)
#define BME280_CTRL_HUM_MSK UINT8_C(0x07)
#define BME280_CTRL_HUM_POS UINT8_C(0x00)
#define BME280_CTRL_PRESS_MSK UINT8_C(0x1C)
#define BME280_CTRL_PRESS_POS UINT8_C(0x02)
#define BME280_CTRL_TEMP_MSK UINT8_C(0xE0)
#define BME280_CTRL_TEMP_POS UINT8_C(0x05)
#define BME280_FILTER_MSK UINT8_C(0x1C)
#define BME280_FILTER_POS UINT8_C(0x02)
#define BME280_STANDBY_MSK UINT8_C(0xE0)
#define BME280_STANDBY_POS UINT8_C(0x05)
/**\name Sensor component selection macros
These values are internal for API implementation. Don't relate this to
data sheet.*/
#define BME280_PRESS UINT8_C(1)
#define BME280_TEMP UINT8_C(1 << 1)
#define BME280_HUM UINT8_C(1 << 2)
#define BME280_ALL UINT8_C(0x07)
/**\name Settings selection macros */
#define BME280_OSR_PRESS_SEL UINT8_C(1)
#define BME280_OSR_TEMP_SEL UINT8_C(1 << 1)
#define BME280_OSR_HUM_SEL UINT8_C(1 << 2)
#define BME280_FILTER_SEL UINT8_C(1 << 3)
#define BME280_STANDBY_SEL UINT8_C(1 << 4)
#define BME280_ALL_SETTINGS_SEL UINT8_C(0x1F)
/**\name Oversampling macros */
#define BME280_NO_OVERSAMPLING UINT8_C(0x00)
#define BME280_OVERSAMPLING_1X UINT8_C(0x01)
#define BME280_OVERSAMPLING_2X UINT8_C(0x02)
#define BME280_OVERSAMPLING_4X UINT8_C(0x03)
#define BME280_OVERSAMPLING_8X UINT8_C(0x04)
#define BME280_OVERSAMPLING_16X UINT8_C(0x05)
/**\name Standby duration selection macros */
#define BME280_STANDBY_TIME_1_MS (0x00)
#define BME280_STANDBY_TIME_62_5_MS (0x01)
#define BME280_STANDBY_TIME_125_MS (0x02)
#define BME280_STANDBY_TIME_250_MS (0x03)
#define BME280_STANDBY_TIME_500_MS (0x04)
#define BME280_STANDBY_TIME_1000_MS (0x05)
#define BME280_STANDBY_TIME_10_MS (0x06)
#define BME280_STANDBY_TIME_20_MS (0x07)
/**\name Filter coefficient selection macros */
#define BME280_FILTER_COEFF_OFF (0x00)
#define BME280_FILTER_COEFF_2 (0x01)
#define BME280_FILTER_COEFF_4 (0x02)
#define BME280_FILTER_COEFF_8 (0x03)
#define BME280_FILTER_COEFF_16 (0x04)
/*!
* @brief Interface selection Enums
*/
enum bme280_intf {
/*! SPI interface */
BME280_SPI_INTF,
/*! I2C interface */
BME280_I2C_INTF
};
/*!
* @brief Type definitions
*/
typedef int8_t (*bme280_com_fptr_t)(uint8_t dev_id, uint8_t reg_addr,
uint8_t *data, uint16_t len);
typedef void (*bme280_delay_fptr_t)(uint32_t period);
/*!
* @brief Calibration data
*/
struct bme280_calib_data {
/**
* @ Trim Variables
*/
/**@{*/
uint16_t dig_T1;
int16_t dig_T2;
int16_t dig_T3;
uint16_t dig_P1;
int16_t dig_P2;
int16_t dig_P3;
int16_t dig_P4;
int16_t dig_P5;
int16_t dig_P6;
int16_t dig_P7;
int16_t dig_P8;
int16_t dig_P9;
uint8_t dig_H1;
int16_t dig_H2;
uint8_t dig_H3;
int16_t dig_H4;
int16_t dig_H5;
int8_t dig_H6;
int32_t t_fine;
/**@}*/
};
/*!
* @brief bme280 sensor structure which comprises of temperature, pressure and
* humidity data
*/
#ifdef BME280_FLOAT_ENABLE
struct bme280_data {
/*! Compensated pressure */
double pressure;
/*! Compensated temperature */
double temperature;
/*! Compensated humidity */
double humidity;
};
#else
struct bme280_data {
/*! Compensated pressure */
uint32_t pressure;
/*! Compensated temperature */
int32_t temperature;
/*! Compensated humidity */
uint32_t humidity;
};
#endif /* BME280_USE_FLOATING_POINT */
/*!
* @brief bme280 sensor structure which comprises of uncompensated temperature,
* pressure and humidity data
*/
struct bme280_uncomp_data {
/*! un-compensated pressure */
uint32_t pressure;
/*! un-compensated temperature */
uint32_t temperature;
/*! un-compensated humidity */
uint32_t humidity;
};
/*!
* @brief bme280 sensor settings structure which comprises of mode,
* oversampling and filter settings.
*/
struct bme280_settings {
/*! pressure oversampling */
uint8_t osr_p;
/*! temperature oversampling */
uint8_t osr_t;
/*! humidity oversampling */
uint8_t osr_h;
/*! filter coefficient */
uint8_t filter;
/*! standby time */
uint8_t standby_time;
};
/*!
* @brief bme280 device structure
*/
struct bme280_dev {
/*! Chip Id */
uint8_t chip_id;
/*! Device Id */
uint8_t dev_id;
/*! SPI/I2C interface */
enum bme280_intf intf;
/*! Read function pointer */
bme280_com_fptr_t read;
/*! Write function pointer */
bme280_com_fptr_t write;
/*! Delay function pointer */
bme280_delay_fptr_t delay_ms;
/*! Trim data */
struct bme280_calib_data calib_data;
/*! Sensor settings */
struct bme280_settings settings;
};
#endif /* BME280_DEFS_H_ */
/** @}*/
/** @}*/

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// implementations of all the stuff the Bosch BME280 reference code needs implemented
// in order to talk to an actual bme280 over i2c on esp32 in idf
// -- github.com/epvuc 12/2017
#include <string.h>
#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/i2c.h"
#include "bme280.h"
// pin numbers specific to this TTGO board
#define SCL_PIN 21
#define SDA_PIN 22
int8_t user_i2c_read(uint8_t dev_addr, uint8_t reg_addr, uint8_t *reg_data, uint8_t cnt);
int8_t user_i2c_write(uint8_t dev_addr, uint8_t reg_addr, uint8_t *reg_data, uint8_t cnt);
int8_t stream_sensor_data_forced_mode(struct bme280_dev *dev);
int8_t stream_sensor_data_normal_mode(struct bme280_dev *dev);
void user_delay_ms(uint32_t ms);
struct bme280_dev bme280;
void my_i2c_setup(void)
{
i2c_config_t conf;
conf.mode = I2C_MODE_MASTER;
conf.sda_io_num = SDA_PIN;
conf.scl_io_num = SCL_PIN;
conf.sda_pullup_en = GPIO_PULLUP_ENABLE;
conf.scl_pullup_en = GPIO_PULLUP_ENABLE;
conf.master.clk_speed = 20000;
i2c_param_config(I2C_NUM_0, &conf);
i2c_driver_install(I2C_NUM_0, I2C_MODE_MASTER, 0, 0, 0);
}
void my_bme280_init(void)
{
int8_t rslt = BME280_OK;
uint8_t settings_sel;
bme280.dev_id = BME280_I2C_ADDR_SEC;
bme280.intf = BME280_I2C_INTF;
bme280.read = (void *)user_i2c_read;
bme280.write = (void *)user_i2c_write;
bme280.delay_ms = (void *)user_delay_ms;
printf("calling bme280_init\r\n");
rslt = bme280_init(&bme280);
printf("bme280 init result %d\r\n", rslt);
bme280.settings.osr_h = BME280_OVERSAMPLING_1X;
bme280.settings.osr_p = BME280_OVERSAMPLING_4X;
bme280.settings.osr_t = BME280_OVERSAMPLING_4X;
bme280.settings.filter = BME280_FILTER_COEFF_OFF;
settings_sel = BME280_OSR_PRESS_SEL | BME280_OSR_TEMP_SEL | BME280_OSR_HUM_SEL | BME280_FILTER_SEL;
rslt = bme280_set_sensor_settings(settings_sel, &bme280);
printf("bme280 settings config result %d\r\n", rslt);
}
#define SUCCESS 0
#define FAIL -1
#define I2C_MASTER_ACK 0
#define I2C_MASTER_NACK 1
int8_t user_i2c_write(uint8_t dev_addr, uint8_t reg_addr, uint8_t *reg_data, uint8_t cnt)
{
int32_t iError = 0;
esp_err_t espRc;
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (dev_addr << 1) | I2C_MASTER_WRITE, true);
i2c_master_write_byte(cmd, reg_addr, true);
i2c_master_write(cmd, reg_data, cnt, true);
i2c_master_stop(cmd);
espRc = i2c_master_cmd_begin(I2C_NUM_0, cmd, 200/portTICK_PERIOD_MS);
// printf("in user_i2c_read, i2c_master_cmd_begin returns %d\r\n", espRc);
if (espRc == ESP_OK) {
iError = SUCCESS;
} else {
iError = FAIL;
}
i2c_cmd_link_delete(cmd);
return (int8_t)iError;
}
int8_t user_i2c_read(uint8_t dev_addr, uint8_t reg_addr, uint8_t *reg_data, uint8_t cnt)
{
int32_t iError = 0;
esp_err_t espRc;
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (dev_addr << 1) | I2C_MASTER_WRITE, true);
i2c_master_write_byte(cmd, reg_addr, true);
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (dev_addr << 1) | I2C_MASTER_READ, true);
if (cnt > 1) {
i2c_master_read(cmd, reg_data, cnt-1, I2C_MASTER_ACK);
}
i2c_master_read_byte(cmd, reg_data+cnt-1, I2C_MASTER_NACK);
i2c_master_stop(cmd);
espRc = i2c_master_cmd_begin(I2C_NUM_0, cmd, 200/portTICK_PERIOD_MS);
if (espRc == ESP_OK) {
iError = SUCCESS;
} else {
iError = FAIL;
}
i2c_cmd_link_delete(cmd);
return (int8_t)iError;
}
void user_delay_ms(uint32_t ms)
{
vTaskDelay(ms/portTICK_PERIOD_MS);
}

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components/bme280/component.mk Normal file
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COMPONENT_ADD_INCLUDEDIRS = .