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drivers/veml6070: initial implementation
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@ -184,6 +184,10 @@ ifneq (,$(filter srf08,$(USEMODULE)))
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USEMODULE += xtimer
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endif
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ifneq (,$(filter veml6070,$(USEMODULE)))
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FEATURES_REQUIRED += periph_i2c
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endif
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ifneq (,$(filter w5100,$(USEMODULE)))
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USEMODULE += netdev2_eth
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USEMODULE += luid
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@ -100,3 +100,6 @@ endif
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ifneq (,$(filter sdcard_spi,$(USEMODULE)))
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USEMODULE_INCLUDES += $(RIOTBASE)/drivers/sdcard_spi/include
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endif
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ifneq (,$(filter veml6070,$(USEMODULE)))
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USEMODULE_INCLUDES += $(RIOTBASE)/drivers/veml6070/include
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endif
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89
drivers/include/veml6070.h
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89
drivers/include/veml6070.h
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@ -0,0 +1,89 @@
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/*
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* Copyright (C) 2017 Inria
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @defgroup drivers_veml6070 VEML6070
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* @ingroup drivers_sensors
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* @brief Device driver interface for the VEML6070 UV sensor
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* @{
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*
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* @file
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* @brief Device driver interface for the VEML6070 UV sensor.
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*
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* @author Alexandre Abadie <alexandre.abadie@inria.fr>
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*/
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#ifndef VEML6070_H
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#define VEML6070_H
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#include "saul.h"
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#include "periph/i2c.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Integration times
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*/
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typedef enum veml6070_integrationtime {
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VEML6070_HALF_T = 0, /**< 1/2 T integration time */
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VEML6070_1_T, /**< 1 T integration time */
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VEML6070_2_T, /**< 2 T integration time */
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VEML6070_4_T, /**< 4 T integration time */
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} veml6070_itime_t;
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/**
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* @brief Status and error return codes
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*/
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enum {
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VEML6070_OK = 0, /**< Everything was fine */
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VEML6070_ERR_I2C /**< Error initializing the I2C bus */
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};
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/**
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* @brief Device initialization parameters
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*/
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typedef struct {
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i2c_t i2c_dev; /**< I2C device which is used */
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veml6070_itime_t itime; /**< Integration time */
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} veml6070_params_t;
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/**
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* @brief Device descriptor for the VEML6070 sensor
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*/
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typedef struct {
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veml6070_params_t params; /**< Device parameters */
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} veml6070_t;
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/**
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* @brief Initialize the given VEML6070 device
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*
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* @param[out] dev Initialized device descriptor of VEML6070 device
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* @param[in] params The parameters for the VEML6070 device (integration time)
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*
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* @return VEML6070_OK on success
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* @return VEML6070_ERR_I2C if given I2C is not enabled in board config
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*/
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int veml6070_init(veml6070_t *dev, const veml6070_params_t * params);
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/**
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* @brief Read UV indice from the given VEML6070 device
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*
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* @param[in] dev Device descriptor of VEML6070 device to read from
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*
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* @return UV indice
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*/
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uint16_t veml6070_read_uv(veml6070_t *dev);
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#ifdef __cplusplus
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}
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#endif
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#endif /* VEML6070_H */
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/** @} */
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1
drivers/veml6070/Makefile
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1
drivers/veml6070/Makefile
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@ -0,0 +1 @@
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include $(RIOTBASE)/Makefile.base
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72
drivers/veml6070/include/veml6070_params.h
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72
drivers/veml6070/include/veml6070_params.h
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@ -0,0 +1,72 @@
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/*
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* Copyright (C) 2017 Inria
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup drivers_veml6070
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*
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* @{
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* @file
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* @brief Default configuration for VEML6070
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*
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* @author Alexandre Abadie <alexandre.abadie@inria.fr>
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*/
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#ifndef VEML6070_PARAMS_H
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#define VEML6070_PARAMS_H
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#include "board.h"
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#include "veml6070.h"
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#include "saul_reg.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Set default configuration parameters for the VEML6070
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* @{
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*/
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#ifndef VEML6070_PARAM_I2C_DEV
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#define VEML6070_PARAM_I2C_DEV I2C_DEV(0)
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#endif
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#ifndef VEML6070_PARAM_ITIME
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#define VEML6070_PARAM_ITIME VEML6070_1_T
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#endif
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#define VEML6070_PARAMS_DEFAULT { .i2c_dev = VEML6070_PARAM_I2C_DEV, \
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.itime = VEML6070_PARAM_ITIME }
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/**@}*/
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/**
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* @brief Configure VEML6070
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*/
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static const veml6070_params_t veml6070_params[] =
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{
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#ifdef VEML6070_PARAMS_BOARD
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VEML6070_PARAMS_BOARD,
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#else
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VEML6070_PARAMS_DEFAULT,
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#endif
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};
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/**
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* @brief Configure SAUL registry entries
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*/
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static const saul_reg_info_t veml6070_saul_reg_info[] =
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{
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{
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.name = "veml6070-uv"
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}
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /* VEML6070_PARAMS_H */
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/** @} */
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76
drivers/veml6070/veml6070.c
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76
drivers/veml6070/veml6070.c
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@ -0,0 +1,76 @@
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/*
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* Copyright (C) 2017 Inria
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup drivers_veml6070
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* @{
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*
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* @file
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* @brief Device driver implementation for the VEML6070 UV sensor.
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*
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* @author Alexandre Abadie <alexandre.abadie@inria.fr>
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*
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* @}
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*/
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#include <math.h>
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#include "log.h"
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#include "veml6070.h"
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#include "veml6070_params.h"
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#include "periph/i2c.h"
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#include "xtimer.h"
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#define ENABLE_DEBUG (0)
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#include "debug.h"
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#define VEML6070_ADDRH (0x39)
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#define VEML6070_ADDRL (0x38)
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/*---------------------------------------------------------------------------*
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* VEML6070 Core API *
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*---------------------------------------------------------------------------*/
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int veml6070_init(veml6070_t *dev, const veml6070_params_t * params)
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{
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dev->params = *params;
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/* Initialize I2C interface */
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if (i2c_init_master(dev->params.i2c_dev, I2C_SPEED_NORMAL)) {
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DEBUG("[Error] I2C device not enabled\n");
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return -VEML6070_ERR_I2C;
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}
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/* Acquire exclusive access */
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i2c_acquire(dev->params.i2c_dev);
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i2c_write_byte(dev->params.i2c_dev, VEML6070_ADDRL,
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(uint8_t)(dev->params.itime << 2) | 0x02);
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/* Release I2C device */
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i2c_release(dev->params.i2c_dev);
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return VEML6070_OK;
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}
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uint16_t veml6070_read_uv(veml6070_t *dev)
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{
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/* Acquire exclusive access */
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i2c_acquire(dev->params.i2c_dev);
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uint8_t buffer[2];
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i2c_read_byte(dev->params.i2c_dev, VEML6070_ADDRL, &buffer[0]);
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i2c_read_byte(dev->params.i2c_dev, VEML6070_ADDRH, &buffer[1]);
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uint16_t uv = (uint16_t)(buffer[1] << 8) | buffer[0];
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/* Release I2C device */
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i2c_release(dev->params.i2c_dev);
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return uv;
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}
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41
drivers/veml6070/veml6070_saul.c
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41
drivers/veml6070/veml6070_saul.c
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/*
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* Copyright (C) 2017 Inria
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup drivers_veml6070
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* @{
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*
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* @file
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* @brief SAUL adaption for VEML6070 UV sensor
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*
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* @author Alexandre Abadie <alexandre.abadie@inria.fr>
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*
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* @}
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*/
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#include <string.h>
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#include "saul.h"
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#include "veml6070.h"
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#include "xtimer.h"
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static int read_uv(void *dev, phydat_t *res)
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{
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veml6070_t *d = (veml6070_t *)dev;
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res->val[0] = veml6070_read_uv(d);
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res->unit = UNIT_NONE;
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res->scale = -1;
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return 1;
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}
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const saul_driver_t veml6070_uv_saul_driver = {
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.read = read_uv,
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.write = saul_notsup,
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.type = SAUL_SENSE_ANY
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};
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