diff options
Diffstat (limited to 'nuttx/configs/dk-tm4c129x')
| -rw-r--r-- | nuttx/configs/dk-tm4c129x/README.txt | 32 | ||||
| -rw-r--r-- | nuttx/configs/dk-tm4c129x/include/board.h | 30 | ||||
| -rw-r--r-- | nuttx/configs/dk-tm4c129x/src/Makefile | 4 | ||||
| -rw-r--r-- | nuttx/configs/dk-tm4c129x/src/dk-tm4c129x.h | 1 | ||||
| -rw-r--r-- | nuttx/configs/dk-tm4c129x/src/tm4c_tmp100.c | 103 |
5 files changed, 164 insertions, 6 deletions
diff --git a/nuttx/configs/dk-tm4c129x/README.txt b/nuttx/configs/dk-tm4c129x/README.txt index 49f356340..720a522bf 100644 --- a/nuttx/configs/dk-tm4c129x/README.txt +++ b/nuttx/configs/dk-tm4c129x/README.txt @@ -36,6 +36,7 @@ Contents - Buttons and LEDs - Serial Console - Networking Support + - Temperature Sensor - DK-TM4129X Configuration Options - Configurations @@ -648,6 +649,37 @@ f Application Configuration -> Network Utilities CONFIG_NSH_NETINIT_RETRYMSEC=2000 : Configure the network monitor as you like CONFIG_NSH_NETINIT_SIGNO=18 +Temperature Sensor +================== + + Support for the on-board TMP-100 temperature sensor is available. This + uses the driver for the compatible LM-75 part. To set up the temperature + sensor, add the following to the NuttX configuration file: + + System Type -> Tiva/Stellaris Peripheral Selection + CONFIG_TIVA_I2C6=y + + Drivers -> I2C Support + CONFIG_I2C=y + + Drivers -> Sensors + CONFIG_I2C_LM75=y + + Then you can implement logic like the following to use the temperature sensor: + + #include <nuttx/sensors/lm75.h> + #include <arch/board/board.h> + + ret = tiva_tmp100_initialize("/dev/temp"); /* Register the temperature sensor */ + fd = open("/dev/temp", O_RDONLY); /* Open the temperature sensor device */ + ret = ioctl(fd, SNIOC_FAHRENHEIT, 0); /* Select Fahrenheit */ + bytesread = read(fd, buffer, 8*sizeof(b16_t)); /* Read temperature samples */ + + More complex temperature sensor operations are also available. See the IOCTL + commands enumerated in include/nuttx/sensors/lm75.h. Also read the descriptions + of the tiva_tmp100_initialize() and tiva_tmp100_attach() interfaces in the + arch/board/board.h file (sames as configs/dk-tm4c129x/include/board.h). + DK-TM4129X Configuration Options ================================ diff --git a/nuttx/configs/dk-tm4c129x/include/board.h b/nuttx/configs/dk-tm4c129x/include/board.h index 7df3b08eb..aacdda3b2 100644 --- a/nuttx/configs/dk-tm4c129x/include/board.h +++ b/nuttx/configs/dk-tm4c129x/include/board.h @@ -108,14 +108,14 @@ * --- ------------ ----------------- */ -/* LED index values for use with tm4c_setled() */ +/* LED index values for use with tiva_setled() */ #define BOARD_LED_R 0 #define BOARD_LED_G 1 #define BOARD_LED_B 2 #define BOARD_NLEDS 3 -/* LED bits for use with tm4c_setleds() */ +/* LED bits for use with tiva_setleds() */ #define BOARD_LED_R_BIT (1 << BOARD_LED_R) #define BOARD_LED_G_BIT (1 << BOARD_LED_G) @@ -244,7 +244,7 @@ void tiva_boardinitialize(void); /************************************************************************************ - * Name: tm4c_ledinit, tm4c_setled, and tm4c_setleds + * Name: tiva_ledinit, tiva_setled, and tiva_setleds * * Description: * If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board LED. If @@ -254,9 +254,27 @@ void tiva_boardinitialize(void); ************************************************************************************/ #ifndef CONFIG_ARCH_LEDS -void tm4c_ledinit(void); -void tm4c_setled(int led, bool ledon); -void tm4c_setleds(uint8_t ledset); +void tiva_ledinit(void); +void tiva_setled(int led, bool ledon); +void tiva_setleds(uint8_t ledset); +#endif + +/************************************************************************************ + * Name: tiva_tmp100_initialize + * + * Description: + * Initialize and register the TMP-100 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. + * + ************************************************************************************/ + +#if defined(CONFIG_I2C) && defined(CONFIG_I2C_LM75) && defined(CONFIG_STM32_I2C1) +int tiva_tmp100_initialize(FAR const char *devpath); #endif #endif /* __ASSEMBLY__ */ diff --git a/nuttx/configs/dk-tm4c129x/src/Makefile b/nuttx/configs/dk-tm4c129x/src/Makefile index 99739fa76..3f624142b 100644 --- a/nuttx/configs/dk-tm4c129x/src/Makefile +++ b/nuttx/configs/dk-tm4c129x/src/Makefile @@ -59,6 +59,10 @@ ifeq ($(CONFIG_NSH_ARCHINIT),y) CSRCS += tm4c_nsh.c endif +ifeq ($(CONFIG_I2C_LM75),y) +CSRCS += tm4c_tmp100.c +endif + COBJS = $(CSRCS:.c=$(OBJEXT)) SRCS = $(ASRCS) $(CSRCS) diff --git a/nuttx/configs/dk-tm4c129x/src/dk-tm4c129x.h b/nuttx/configs/dk-tm4c129x/src/dk-tm4c129x.h index 6935752e3..b51e70418 100644 --- a/nuttx/configs/dk-tm4c129x/src/dk-tm4c129x.h +++ b/nuttx/configs/dk-tm4c129x/src/dk-tm4c129x.h @@ -122,6 +122,7 @@ * I2C address is 0x4A */ +#define TMP100_I2CBUS 6 #define TMP100_I2CADDR 0x4a /* Speaker outputs *****************************************************************/ 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 */ |