drivers/analog: Add driver for digital to analog converted DAC7571.
configs/nucleo-l432kc: Add support for a connect DAC7571 converter.
This commit is contained in:
Daniel Pereira Carvalho
Gregory Nutt
parent
88100026fa
commit
d755b07a06
@ -1,7 +1,7 @@
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/************************************************************************************
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* configs/nucleo-l432kc/include/board.h
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*
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* Copyright (C) 2016 Gregory Nutt. All rights reserved.
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* Copyright (C) 2016, 2018 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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@ -104,16 +104,22 @@
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/* I2C
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*
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* On Arduino the I2C bus is available at positions A4 and A5. On the
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* nulceo-1432kc board the I2C bus pins (PB6 and PB7) are connected to
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* pins A4 and A5 through the SB16 and SB18 solder bridges. In this case
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* the pins PA5 and PA6 must be configured as input floating.
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* nucleo-1432kc board the I2C bus pins (PB6 and PB7) are connected to
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* pins A4 and A5 through the SB16 and SB18 solder bridges.
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*
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* If these solder bridges are open, then Arduino D4(PA5) and D5(PA6)
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* pins are not supported. PA5 and PA6 must be configured as input
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* floating.
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*
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* The optional _GPIO configurations allow the I2C driver to manually
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* reset the bus to clear stuck slaves. They match the pin configuration,
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* but are normally-high GPIOs.
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*
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*/
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#define GPIO_I2C1_D4 \
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(GPIO_INPUT | GPIO_FLOAT | GPIO_PORTA | GPIO_PIN5)
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#define GPIO_I2C1_D5 \
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(GPIO_INPUT | GPIO_FLOAT | GPIO_PORTA | GPIO_PIN6)
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#define GPIO_I2C1_SCL \
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(GPIO_I2C1_SCL_1 | GPIO_OPENDRAIN | GPIO_SPEED_50MHz | GPIO_OUTPUT_SET)
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#define GPIO_I2C1_SDA \
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@ -127,7 +133,7 @@
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/* SPI */
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/* SPI1 is available on the arduino protocol at positions D11/12/13 */
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/* SPI1 is available on the Arduino protocol at positions D11/12/13 */
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#define GPIO_SPI1_MISO GPIO_SPI1_MISO_1 /*PA6*/
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#define GPIO_SPI1_MOSI GPIO_SPI1_MOSI_1 /*PA7*/
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@ -52,6 +52,10 @@ ifeq ($(CONFIG_ADC),y)
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CSRCS += stm32_adc.c
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endif
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ifeq ($(CONFIG_DAC7571),y)
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CSRCS += stm32_dac7571.c
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endif
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ifeq ($(CONFIG_SENSORS_QENCODER),y)
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CSRCS += stm32_qencoder.c
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endif
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@ -144,6 +144,18 @@ int stm32l4_pwm_setup(void);
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int stm32l4_adc_setup(void);
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#endif
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/************************************************************************************
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* Name: stm32_dac7571initialize
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*
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* Description:
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* Initialize and register the DAC7571 driver.
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*
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************************************************************************************/
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#ifdef CONFIG_DAC7571
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int stm32_dac7571initialize(FAR const char *devpath);
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#endif
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/****************************************************************************
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* Name: board_timer_driver_initialize
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*
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@ -1,7 +1,7 @@
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/****************************************************************************
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* configs/nucleo-l432kc/src/stm32l4_appinit.c
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*
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* Copyright (C) 2016 Gregory Nutt. All rights reserved.
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* Copyright (C) 2016, 2018 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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@ -190,6 +190,16 @@ int board_app_initialize(uintptr_t arg)
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}
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#endif
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#ifdef CONFIG_DAC7571
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/* Initialize and register DAC7571 */
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ret = stm32_dac7571initialize("/dev/dac0");
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if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: stm32_dac7571initialize() failed: %d\n", ret);
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}
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#endif
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#ifdef CONFIG_TIMER
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/* Initialize and register the timer driver */
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@ -204,7 +214,6 @@ int board_app_initialize(uintptr_t arg)
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#endif
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#ifdef CONFIG_SENSORS_QENCODER
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/* Initialize and register the qencoder driver */
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index = 0;
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129
configs/nucleo-l432kc/src/stm32_dac7571.c
Normal file
129
configs/nucleo-l432kc/src/stm32_dac7571.c
Normal file
@ -0,0 +1,129 @@
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/************************************************************************************
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* configs/nucleo-l432kc/src/stm32_dac7571.c
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*
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* Copyright (C) 2018 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <debug.h>
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#include <errno.h>
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#include <nuttx/i2c/i2c_master.h>
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#include <nuttx/analog/dac.h>
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#include <arch/board/board.h>
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#include <chip.h>
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#include <stm32l4.h>
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#if defined(CONFIG_I2C) && defined(CONFIG_STM32L4_I2C1) && defined(CONFIG_DAC7571)
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/************************************************************************************
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* Preprocessor definitions
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************************************************************************************/
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#if !defined(CONFIG_DAC7571_ADDR)
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# define CONFIG_DAC7571_ADDR 0x4C /* A0 tied to ground */
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#endif
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/************************************************************************************
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* Private Data
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************************************************************************************/
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static struct dac_dev_s *g_dac;
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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/************************************************************************************
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* Name: stm32_dac7571initialize
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*
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* Description:
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* Initialize and register the DAC7571 DAC driver.
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*
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* Input Parameters:
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* devpath - The full path to the driver to register. E.g., "/dev/dac0"
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno value on failure.
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*
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************************************************************************************/
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int stm32_dac7571initialize(FAR const char *devpath)
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{
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FAR struct i2c_master_s *i2c;
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int ret;
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/* Configure D4(PA5) and D5(PA6) as input floating */
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stm32l4_configgpio(GPIO_I2C1_D4);
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stm32l4_configgpio(GPIO_I2C1_D5);
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/* Get an instance of the I2C1 interface */
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i2c = stm32l4_i2cbus_initialize(1);
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if (!i2c)
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{
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return -ENODEV;
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}
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/* Then initialize and register DAC7571 */
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g_dac = dac7571_initialize(i2c, CONFIG_DAC7571_ADDR);
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if (!g_dac)
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{
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ret = -ENODEV;
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goto error;
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}
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ret = dac_register(devpath, g_dac);
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if (ret < 0)
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{
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aerr("ERROR: dac_register failed: %d\n", ret);
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goto error;
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}
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return OK;
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error:
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(void)stm32l4_i2cbus_uninitialize(i2c);
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return ret;
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}
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#endif /* defined(CONFIG_I2C) && defined(CONFIG_STM32_I2C1) && defined(CONFIG_DAC7571) */
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@ -147,6 +147,18 @@ config DAC_AD5410
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default n
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select SPI
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config DAC7571
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bool "DAC7571 support"
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default n
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select I2C
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---help---
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Enable driver support for the Texas Instruments DAC7571 dac.
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config DAC7571_I2C_FREQUENCY
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int "DAC7571 I2C frequency"
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default 400000
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depends on DAC7571
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endif # DAC
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config OPAMP
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@ -48,6 +48,10 @@ CSRCS += dac.c
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ifeq ($(CONFIG_DAC_AD5410),y)
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CSRCS += ad5410.c
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endif
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ifeq ($(CONFIG_DAC7571),y)
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CSRCS += dac7571.c
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endif
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endif
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# Check for COMP devices
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280
drivers/analog/dac7571.c
Normal file
280
drivers/analog/dac7571.c
Normal file
@ -0,0 +1,280 @@
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/****************************************************************************
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* arch/drivers/analog/dac7571.c
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*
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* Copyright (C) 2010, 2016, 2018 Gregory Nutt. All rights reserved.
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* Copyright (C) 2018 Daniel P. Carvalho. All rights reserved.
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* Author: Daniel P. Carvalho <danieloak@gmail.com>
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*
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* This file is a part of NuttX:
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*
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* Copyright (C) 2010 Gregory Nutt. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
|
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
|
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
|
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* used to endorse or promote products derived from this software
|
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <semaphore.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/arch.h>
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#include <nuttx/analog/dac.h>
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#include <nuttx/i2c/i2c_master.h>
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/****************************************************************************
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* Preprocessor definitions
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****************************************************************************/
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#if !defined(CONFIG_I2C)
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# error I2C Support Required.
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#endif
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#if defined(CONFIG_DAC7571)
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/* Operating modes - not controllable by user */
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#define DAC7571_CONFIG_OPMODE_SHIFT 4
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#define DAC7571_CONFIG_OPMODE_MASK (0x0F << DAC7571_CONFIG_OPMODE_SHIFT)
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#define DAC7571_CONFIG_OPMODE_NORMAL (0 << DAC7571_CONFIG_OPMODE_SHIFT)
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#define DAC7571_CONFIG_OPMODE_1K_PWD (1 << DAC7571_CONFIG_OPMODE_SHIFT)
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#define DAC7571_CONFIG_OPMODE_100K_PWD (2 << DAC7571_CONFIG_OPMODE_SHIFT)
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#define DAC7571_CONFIG_OPMODE_HZ_PWD (3 << DAC7571_CONFIG_OPMODE_SHIFT)
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#ifndef CONFIG_DAC7571_I2C_FREQUENCY
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# define CONFIG_DAC7571_I2C_FREQUENCY 400000
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#endif
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#define I2C_NOSTARTSTOP_MSGS 2
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#define I2C_NOSTARTSTOP_ADDRESS_MSG_INDEX 0
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#define I2C_NOSTARTSTOP_DATA_MSG_INDEX 1
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct dac7571_dev_s
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{
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FAR struct i2c_master_s *i2c; /* I2C interface */
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uint8_t addr; /* I2C address */
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uint16_t state; /* DAC7571 current state */
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/* I2C Helpers */
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/* DAC methods */
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static void dac7571_reset(FAR struct dac_dev_s *dev);
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static int dac7571_setup(FAR struct dac_dev_s *dev);
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static void dac7571_shutdown(FAR struct dac_dev_s *dev);
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static void dac7571_txint(FAR struct dac_dev_s *dev, bool enable);
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static int dac7571_send(FAR struct dac_dev_s *dev, FAR struct dac_msg_s *msg);
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static int dac7571_ioctl(FAR struct dac_dev_s *dev, int cmd, unsigned long arg);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static struct dac7571_dev_s g_dacpriv;
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static const struct dac_ops_s g_dacops =
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{
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.ao_reset = dac7571_reset,
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.ao_setup = dac7571_setup,
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.ao_shutdown = dac7571_shutdown,
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.ao_txint = dac7571_txint,
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.ao_send = dac7571_send,
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.ao_ioctl = dac7571_ioctl,
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};
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static struct dac_dev_s g_dacdev =
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{
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.ad_ops = &g_dacops,
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.ad_priv = &g_dacpriv,
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: dac7571_reset
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*
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* Description:
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* Reset the DAC device. Called early to initialize the hardware. This
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* is called, before ao_setup() and on error conditions.
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*
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****************************************************************************/
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static void dac7571_reset(FAR struct dac_dev_s *dev)
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{
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}
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/****************************************************************************
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* Name: dac7571_setup
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*
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* Description:
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* Configure the DAC. This method is called the first time that the DAC
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* device is opened. This will occur when the port is first opened.
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* This setup includes configuring and attaching DAC interrupts. Interrupts
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* are all disabled upon return.
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*
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****************************************************************************/
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static int dac7571_setup(FAR struct dac_dev_s *dev)
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{
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return OK;
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}
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/****************************************************************************
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* Name: dac7571_shutdown
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*
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* Description:
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* Disable the DAC. This method is called when the DAC device is closed.
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* This method reverses the operation the setup method.
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*
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****************************************************************************/
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static void dac7571_shutdown(FAR struct dac_dev_s *dev)
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{
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}
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/****************************************************************************
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* Name: dac7571_txint
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*
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* Description:
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* Call to enable or disable TX interrupts
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*
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****************************************************************************/
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static void dac7571_txint(FAR struct dac_dev_s *dev, bool enable)
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{
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}
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/****************************************************************************
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* Name: dac7571_send
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****************************************************************************/
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static int dac7571_send(FAR struct dac_dev_s *dev, FAR struct dac_msg_s *msg)
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{
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FAR struct dac7571_dev_s *priv = (FAR struct dac7571_dev_s *)dev->ad_priv;
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struct i2c_config_s config;
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int ret;
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/* Sanity check */
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DEBUGASSERT(priv->i2c != NULL);
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/* Set up message to send */
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ainfo("value: %08x\n", msg->am_data);
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uint8_t const BUFFER_SIZE = 2;
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uint8_t buffer[BUFFER_SIZE];
|
||||
|
||||
buffer[0] = (uint8_t)(msg->am_data >> 8);
|
||||
buffer[0] &= ~(DAC7571_CONFIG_OPMODE_MASK); /* only normal op mode supported */
|
||||
buffer[1] = (uint8_t)(msg->am_data);
|
||||
|
||||
/* Set up the I2C configuration */
|
||||
|
||||
config.frequency = CONFIG_DAC7571_I2C_FREQUENCY;
|
||||
config.address = priv->addr;
|
||||
config.addrlen = 7;
|
||||
|
||||
/* Then perform the transfer. */
|
||||
|
||||
ret = i2c_write(priv->i2c, &config, buffer, BUFFER_SIZE);
|
||||
if (ret < 0)
|
||||
{
|
||||
aerr("ERROR: dac7571_send failed code:%d\n", ret);
|
||||
}
|
||||
|
||||
dac_txdone(&g_dacdev);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: dac7571_ioctl
|
||||
****************************************************************************/
|
||||
|
||||
static int dac7571_ioctl(FAR struct dac_dev_s *dev, int cmd,
|
||||
unsigned long arg)
|
||||
{
|
||||
return -ENOTTY;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: dac7571_initialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize DAC
|
||||
*
|
||||
* Input Parameters:
|
||||
* Port number (for hardware that has multiple DAC interfaces)
|
||||
*
|
||||
* Returned Value:
|
||||
* Valid DAC7571 device structure reference on success; a NULL on failure
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
FAR struct dac_dev_s *dac7571_initialize(FAR struct i2c_master_s *i2c,
|
||||
uint8_t addr)
|
||||
{
|
||||
FAR struct dac7571_dev_s *priv;
|
||||
|
||||
/* Sanity check */
|
||||
|
||||
DEBUGASSERT(i2c != NULL);
|
||||
|
||||
/* Initialize the DAC7571 device structure */
|
||||
|
||||
priv = (FAR struct dac7571_dev_s *)g_dacdev.ad_priv;
|
||||
priv->i2c = i2c;
|
||||
priv->addr = addr;
|
||||
return &g_dacdev;
|
||||
}
|
||||
|
||||
#endif /* CONFIG_DAC7571 */
|
||||
@ -1,7 +1,7 @@
|
||||
/************************************************************************************
|
||||
* include/nuttx/analog/dac.h
|
||||
*
|
||||
* Copyright (C) 2017 Gregory Nutt. All rights reserved.
|
||||
* Copyright (C) 2017, 2018 Gregory Nutt. All rights reserved.
|
||||
* Copyright (C) 2011 Li Zhuoyi. All rights reserved.
|
||||
* Author: Li Zhuoyi <lzyy.cn@gmail.com>
|
||||
* History: 0.1 2011-08-04 initial version
|
||||
@ -55,11 +55,13 @@
|
||||
#include <stdbool.h>
|
||||
#include <semaphore.h>
|
||||
#include <nuttx/fs/fs.h>
|
||||
#include <nuttx/i2c/i2c_master.h>
|
||||
#include <nuttx/spi/spi.h>
|
||||
|
||||
/************************************************************************************
|
||||
* Pre-processor Definitions
|
||||
************************************************************************************/
|
||||
|
||||
/* Default configuration settings that may be overridden in the board configuration.
|
||||
* file. The configured size is limited to 255 to fit into a uint8_t.
|
||||
*/
|
||||
@ -208,6 +210,8 @@ int dac_txdone(FAR struct dac_dev_s *dev);
|
||||
|
||||
FAR struct dac_dev_s *up_ad5410initialize(FAR struct spi_dev_s *spi, unsigned int devno);
|
||||
|
||||
FAR struct dac_dev_s *dac7571_initialize(FAR struct i2c_master_s *i2c, uint8_t addr);
|
||||
|
||||
#if defined(__cplusplus)
|
||||
}
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user