diff options
Diffstat (limited to 'nuttx/configs/dk-tm4c129x/src/tm4c_tmp100.c')
-rw-r--r-- | nuttx/configs/dk-tm4c129x/src/tm4c_tmp100.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/nuttx/configs/dk-tm4c129x/src/tm4c_tmp100.c b/nuttx/configs/dk-tm4c129x/src/tm4c_tmp100.c new file mode 100644 index 000000000..1b179610c --- /dev/null +++ b/nuttx/configs/dk-tm4c129x/src/tm4c_tmp100.c @@ -0,0 +1,103 @@ +/**************************************************************************** + * configs/dk-tm4c129x/src/tiva_tmp100.c + * + * Copyright (C) 2015 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * 3. Neither the name NuttX nor the names of its 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 THE + * COPYRIGHT OWNER 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <errno.h> + +#include <nuttx/i2c.h> +#include <nuttx/sensors/lm75.h> + +#include "tiva_i2c.h" +#include "dk-tm4c129x.h" + +#if defined(CONFIG_I2C) && defined(CONFIG_I2C_LM75) && \ + defined(CONFIG_TIVA_I2C6) + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: tiva_tmp100_initialize + * + * Description: + * Initialize and register the LM-75 Temperature Sensor driver. + * + * Input parameters: + * devpath - The full path to the driver to register. E.g., "/dev/temp0" + * + * Returned Value: + * Zero (OK) on success; a negated errno value on failure. + * + ****************************************************************************/ + +int tiva_tmp100_initialize(FAR const char *devpath) +{ + FAR struct i2c_dev_s *i2c; + int ret; + + /* Get an instance of the I2C6 interface */ + + i2c = up_i2cinitialize(TMP100_I2CBUS); + if (!i2c) + { + return -ENODEV; + } + + /* Then register the temperature sensor */ + + ret = lm75_register(devpath, i2c, TMP100_I2CADDR); + if (ret < 0) + { + (void)up_i2cuninitialize(i2c); + } + + return ret; +} + +#endif /* CONFIG_I2C && CONFIG_I2C_LM75 && CONFIG_TIVA_I2C6 */ |