mirror of
https://github.com/RIOT-OS/RIOT.git
synced 2025-01-18 12:52:44 +01:00
de9b67bdc2
- Use RIOT's GPIO interface to access the sensor to increase portability - Changed API to allow more than one sensor per board - Added `sht1x_params.h` that specifies how the sensors is connected - each board can overwrite default settings by #defining SHT1X_PARAM_CLK and SHT1X_PARAM_DATA - Changed arithmetic to use integer calculations only instead of floating point arithmetic - Added support for checking the CRC sum - Allow optional skipping of the CRC check to speed up measuring - Added support for advanced features like reducing the resolution and skipping calibration to speed up measuring - Allow specifying the supply voltage of sensor which heavily influences the temperature result (and use that information to calculate the correct temperature) - Reset sensor on initialization to bring it in a well known state - Support for the obscure heater feature. (Can be useful to check the temperature sensor?) - Updated old SHT11 shell commands to the new driver interface, thus allowing more than one SHT10/11/15 sensor to be used - Added new shell command to allow full configuration of all attached SHT1x sensors - Removed old command for setting the SHT11 temperature offset, as this feature is implemented in the new configuration command
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
/*
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* Copyright 2018 Otto-von-Guericke-Universität Magdeburg
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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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/*
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* @ingroup sys_auto_init
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* @{
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*
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* @file
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* @brief Auto initialization for SHT1X temperature/humidity sensors
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*
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* @author Marian Buschsieweke <marian.buschsieweke@ovgu.de>
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*
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* @}
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*/
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#ifdef MODULE_SHT1X
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#include "log.h"
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#include "sht1x_params.h"
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#include "sht1x.h"
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#define ENABLE_DEBUG (0)
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#include "debug.h"
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/**
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* @brief Define the number of configured sensors
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*/
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#define SHT1X_NUM (sizeof(sht1x_params) / sizeof(sht1x_params[0]))
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/**
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* @brief Allocate memory for the device descriptors
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*/
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sht1x_dev_t sht1x_devs[SHT1X_NUM];
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static void sht1x_error(unsigned int num, const char *reason)
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{
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LOG_ERROR("[auto_init] error initializing SHT10/SHT11/SHT15 sensor "
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"#%u: %s\n", num, reason);
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}
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void auto_init_sht1x(void)
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{
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for (unsigned int i = 0; i < SHT1X_NUM; i++) {
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DEBUG("[auto_init_sht1x] Initializing SHT1X sensor #%u\n", i);
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switch (sht1x_init(&sht1x_devs[i], &sht1x_params[i])) {
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case 0:
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break;
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case -EIO:
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sht1x_error(i, "Failed to initialize GPIOs");
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continue;
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case -EINVAL:
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sht1x_error(i, "Invalid configuration for VDD");
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continue;
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case -EPROTO:
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sht1x_error(i, "Reset command not acknowledged");
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continue;
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default:
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/* Should not happen, but better safe than sorry */
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sht1x_error(i, "?");
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continue;
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}
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}
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}
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#else
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typedef int dont_be_pedantic;
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#endif /* MODULE_SHT1X */
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