167 lines
4.9 KiB
C
167 lines
4.9 KiB
C
/**
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******************************************************************************
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* @file stm3210e_eval_tsensor.c
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* @author MCD Application Team
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* @version V7.0.0
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* @date 14-April-2017
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* @brief This file provides a set of functions needed to manage the I2C STLM75
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* temperature sensor mounted on STM3210E_EVAL board .
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* It implements a high level communication layer for read and write
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* from/to this sensor. The needed STM32L152xD hardware resources (I2C and
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* GPIO) are defined in stm3210e_eval.h file, and the initialization is
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* performed in TSENSOR_IO_Init() function declared in stm3210e_eval.c
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* file.
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* You can easily tailor this driver to any other development board,
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* by just adapting the defines for hardware resources and
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* TSENSOR_IO_Init() function.
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*
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* +--------------------------------------------------------------------+
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* | Pin assignment |
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* +----------------------------------------+--------------+------------+
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* | STM3210E I2C Pins | STLM75 | Pin |
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* +----------------------------------------+--------------+------------+
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* | EVAL_I2C2_SDA_PIN | SDA | 1 |
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* | EVAL_I2C2_SCL_PIN | SCL | 2 |
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* | EVAL_I2C2_SMBUS_PIN | OS/INT | 3 |
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* | . | GND | 4 (0V) |
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* | . | A2 | 5 |
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* | . | A1 | 6 |
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* | . | A0 | 7 |
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* | . | VDD | 8 (3.3V)|
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* +----------------------------------------+--------------+------------+
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2016 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm3210e_eval_tsensor.h"
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/** @addtogroup BSP
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* @{
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*/
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/** @addtogroup STM3210E_EVAL
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* @{
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*/
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/** @defgroup STM3210E_EVAL_TSENSOR STM3210E EVAL TSENSOR
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* @brief This file includes the STLM75 Temperature Sensor driver of
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* STM3210E_EVAL board.
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* @{
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*/
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/** @defgroup STM3210E_EVAL_TSENSOR_Private_Variables STM3210E EVAL TSENSOR Private Variables
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* @{
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*/
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static TSENSOR_DrvTypeDef *tsensor_drv;
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__IO uint16_t TSENSORAddress = 0;
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/**
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* @}
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*/
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/** @defgroup STM3210E_EVAL_I2C_TSENSOR_Exported_Functions STM3210E EVAL I2C TSENSOR Exported Functions
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* @{
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*/
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/**
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* @brief Initializes peripherals used by the I2C Temperature Sensor driver.
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* @retval TSENSOR status
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*/
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uint32_t BSP_TSENSOR_Init(void)
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{
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uint8_t ret = TSENSOR_ERROR;
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TSENSOR_InitTypeDef tsensor_initstruct = {0};
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/* Temperature Sensor Initialization */
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if(Stlm75Drv.IsReady(TSENSOR_I2C_ADDRESS_A01, TSENSOR_MAX_TRIALS) == HAL_OK)
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{
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/* Initialize the temperature sensor driver structure */
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TSENSORAddress = TSENSOR_I2C_ADDRESS_A01;
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tsensor_drv = &Stlm75Drv;
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ret = TSENSOR_OK;
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}
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else
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{
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if(Stlm75Drv.IsReady(TSENSOR_I2C_ADDRESS_A02, TSENSOR_MAX_TRIALS) == HAL_OK)
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{
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/* Initialize the temperature sensor driver structure */
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TSENSORAddress = TSENSOR_I2C_ADDRESS_A02;
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tsensor_drv = &Stlm75Drv;
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ret = TSENSOR_OK;
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}
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else
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{
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ret = TSENSOR_ERROR;
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}
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}
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if (ret == TSENSOR_OK)
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{
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/* Configure Temperature Sensor : Conversion 9 bits in continuous mode */
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/* Alert outside range Limit Temperature 12<31> <-> 24<32>c */
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tsensor_initstruct.AlertMode = STLM75_INTERRUPT_MODE;
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tsensor_initstruct.ConversionMode = STLM75_CONTINUOUS_MODE;
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tsensor_initstruct.TemperatureLimitHigh = 24;
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tsensor_initstruct.TemperatureLimitLow = 12;
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/* TSENSOR Init */
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tsensor_drv->Init(TSENSORAddress, &tsensor_initstruct);
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ret = TSENSOR_OK;
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}
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return ret;
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}
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/**
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* @brief Returns the Temperature Sensor status.
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* @retval The Temperature Sensor status.
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*/
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uint8_t BSP_TSENSOR_ReadStatus(void)
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{
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return (tsensor_drv->ReadStatus(TSENSORAddress));
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}
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/**
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* @brief Read Temperature register of STLM75.
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* @retval STLM75 measured temperature value.
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*/
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uint16_t BSP_TSENSOR_ReadTemp(void)
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{
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return tsensor_drv->ReadTemp(TSENSORAddress);
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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