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drivers/veml6070: initial implementation

pr/rotary
Alexandre Abadie 6 years ago
parent
commit
65d1b77338
  1. 4
      drivers/Makefile.dep
  2. 3
      drivers/Makefile.include
  3. 89
      drivers/include/veml6070.h
  4. 1
      drivers/veml6070/Makefile
  5. 72
      drivers/veml6070/include/veml6070_params.h
  6. 76
      drivers/veml6070/veml6070.c
  7. 41
      drivers/veml6070/veml6070_saul.c

4
drivers/Makefile.dep

@ -184,6 +184,10 @@ ifneq (,$(filter srf08,$(USEMODULE)))
USEMODULE += xtimer
endif
ifneq (,$(filter veml6070,$(USEMODULE)))
FEATURES_REQUIRED += periph_i2c
endif
ifneq (,$(filter w5100,$(USEMODULE)))
USEMODULE += netdev2_eth
USEMODULE += luid

3
drivers/Makefile.include

@ -100,3 +100,6 @@ endif
ifneq (,$(filter sdcard_spi,$(USEMODULE)))
USEMODULE_INCLUDES += $(RIOTBASE)/drivers/sdcard_spi/include
endif
ifneq (,$(filter veml6070,$(USEMODULE)))
USEMODULE_INCLUDES += $(RIOTBASE)/drivers/veml6070/include
endif

89
drivers/include/veml6070.h

@ -0,0 +1,89 @@
/*
* Copyright (C) 2017 Inria
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @defgroup drivers_veml6070 VEML6070
* @ingroup drivers_sensors
* @brief Device driver interface for the VEML6070 UV sensor
* @{
*
* @file
* @brief Device driver interface for the VEML6070 UV sensor.
*
* @author Alexandre Abadie <alexandre.abadie@inria.fr>
*/
#ifndef VEML6070_H
#define VEML6070_H
#include "saul.h"
#include "periph/i2c.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Integration times
*/
typedef enum veml6070_integrationtime {
VEML6070_HALF_T = 0, /**< 1/2 T integration time */
VEML6070_1_T, /**< 1 T integration time */
VEML6070_2_T, /**< 2 T integration time */
VEML6070_4_T, /**< 4 T integration time */
} veml6070_itime_t;
/**
* @brief Status and error return codes
*/
enum {
VEML6070_OK = 0, /**< Everything was fine */
VEML6070_ERR_I2C /**< Error initializing the I2C bus */
};
/**
* @brief Device initialization parameters
*/
typedef struct {
i2c_t i2c_dev; /**< I2C device which is used */
veml6070_itime_t itime; /**< Integration time */
} veml6070_params_t;
/**
* @brief Device descriptor for the VEML6070 sensor
*/
typedef struct {
veml6070_params_t params; /**< Device parameters */
} veml6070_t;
/**
* @brief Initialize the given VEML6070 device
*
* @param[out] dev Initialized device descriptor of VEML6070 device
* @param[in] params The parameters for the VEML6070 device (integration time)
*
* @return VEML6070_OK on success
* @return VEML6070_ERR_I2C if given I2C is not enabled in board config
*/
int veml6070_init(veml6070_t *dev, const veml6070_params_t * params);
/**
* @brief Read UV indice from the given VEML6070 device
*
* @param[in] dev Device descriptor of VEML6070 device to read from
*
* @return UV indice
*/
uint16_t veml6070_read_uv(veml6070_t *dev);
#ifdef __cplusplus
}
#endif
#endif /* VEML6070_H */
/** @} */

1
drivers/veml6070/Makefile

@ -0,0 +1 @@
include $(RIOTBASE)/Makefile.base

72
drivers/veml6070/include/veml6070_params.h

@ -0,0 +1,72 @@
/*
* Copyright (C) 2017 Inria
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup drivers_veml6070
*
* @{
* @file
* @brief Default configuration for VEML6070
*
* @author Alexandre Abadie <alexandre.abadie@inria.fr>
*/
#ifndef VEML6070_PARAMS_H
#define VEML6070_PARAMS_H
#include "board.h"
#include "veml6070.h"
#include "saul_reg.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Set default configuration parameters for the VEML6070
* @{
*/
#ifndef VEML6070_PARAM_I2C_DEV
#define VEML6070_PARAM_I2C_DEV I2C_DEV(0)
#endif
#ifndef VEML6070_PARAM_ITIME
#define VEML6070_PARAM_ITIME VEML6070_1_T
#endif
#define VEML6070_PARAMS_DEFAULT { .i2c_dev = VEML6070_PARAM_I2C_DEV, \
.itime = VEML6070_PARAM_ITIME }
/**@}*/
/**
* @brief Configure VEML6070
*/
static const veml6070_params_t veml6070_params[] =
{
#ifdef VEML6070_PARAMS_BOARD
VEML6070_PARAMS_BOARD,
#else
VEML6070_PARAMS_DEFAULT,
#endif
};
/**
* @brief Configure SAUL registry entries
*/
static const saul_reg_info_t veml6070_saul_reg_info[] =
{
{
.name = "veml6070-uv"
}
};
#ifdef __cplusplus
}
#endif
#endif /* VEML6070_PARAMS_H */
/** @} */

76
drivers/veml6070/veml6070.c

@ -0,0 +1,76 @@
/*
* Copyright (C) 2017 Inria
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup drivers_veml6070
* @{
*
* @file
* @brief Device driver implementation for the VEML6070 UV sensor.
*
* @author Alexandre Abadie <alexandre.abadie@inria.fr>
*
* @}
*/
#include <math.h>
#include "log.h"
#include "veml6070.h"
#include "veml6070_params.h"
#include "periph/i2c.h"
#include "xtimer.h"
#define ENABLE_DEBUG (0)
#include "debug.h"
#define VEML6070_ADDRH (0x39)
#define VEML6070_ADDRL (0x38)
/*---------------------------------------------------------------------------*
* VEML6070 Core API *
*---------------------------------------------------------------------------*/
int veml6070_init(veml6070_t *dev, const veml6070_params_t * params)
{
dev->params = *params;
/* Initialize I2C interface */
if (i2c_init_master(dev->params.i2c_dev, I2C_SPEED_NORMAL)) {
DEBUG("[Error] I2C device not enabled\n");
return -VEML6070_ERR_I2C;
}
/* Acquire exclusive access */
i2c_acquire(dev->params.i2c_dev);
i2c_write_byte(dev->params.i2c_dev, VEML6070_ADDRL,
(uint8_t)(dev->params.itime << 2) | 0x02);
/* Release I2C device */
i2c_release(dev->params.i2c_dev);
return VEML6070_OK;
}
uint16_t veml6070_read_uv(veml6070_t *dev)
{
/* Acquire exclusive access */
i2c_acquire(dev->params.i2c_dev);
uint8_t buffer[2];
i2c_read_byte(dev->params.i2c_dev, VEML6070_ADDRL, &buffer[0]);
i2c_read_byte(dev->params.i2c_dev, VEML6070_ADDRH, &buffer[1]);
uint16_t uv = (uint16_t)(buffer[1] << 8) | buffer[0];
/* Release I2C device */
i2c_release(dev->params.i2c_dev);
return uv;
}

41
drivers/veml6070/veml6070_saul.c

@ -0,0 +1,41 @@
/*
* Copyright (C) 2017 Inria
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup drivers_veml6070
* @{
*
* @file
* @brief SAUL adaption for VEML6070 UV sensor
*
* @author Alexandre Abadie <alexandre.abadie@inria.fr>
*
* @}
*/
#include <string.h>
#include "saul.h"
#include "veml6070.h"
#include "xtimer.h"
static int read_uv(void *dev, phydat_t *res)
{
veml6070_t *d = (veml6070_t *)dev;
res->val[0] = veml6070_read_uv(d);
res->unit = UNIT_NONE;
res->scale = -1;
return 1;
}
const saul_driver_t veml6070_uv_saul_driver = {
.read = read_uv,
.write = saul_notsup,
.type = SAUL_SENSE_ANY
};
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