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boards/nucleo-l432kc: Add internal DAC code.

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* Nucleo-L432KC board was missing internal MCU DAC code.
* DAC is now available on PA4/A3 and /dev/dac0 when enabled.
* Updated info on ADC inputs (PA6/A5,PA7/A6) depending on configuration.

Signed-off-by: Tomasz 'CeDeROM' CEDRO <tomek@cedro.info>
This commit is contained in:
Tomasz 'CeDeROM' CEDRO 2024-10-19 06:51:59 +02:00 • committed by Mateusz Szafoni
parent 444ba4caa4
commit 2ed9bd5e71
5 changed files with 117 additions and 1 deletions
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8
boards/arm/stm32l4/nucleo-l432kc/include/board.h
View file

@ -63,8 +63,14 @@
/* Analog pin selections ****************************************************/
/* ADC
* Build time configurable pins are defined in ../src/stm32_adc.c.
* ADC1 with DMA: GPIO_ADC1_IN11 (PA6/A5), GPIO_ADC1_IN12 (PA7/A6).
* ADC1 no DMA : GPIO_ADC1_IN11 (PA6/A5).
*/
/* DAC
* Default is PA4 (same as ADC, do not use both at the same time)
* DAC1: GPIO_DAC1_OUT_1 (PA4/A3).
*/
#define GPIO_DAC1_OUT GPIO_DAC1_OUT_1

4
boards/arm/stm32l4/nucleo-l432kc/src/Makefile
View file

@ -40,6 +40,10 @@ ifeq ($(CONFIG_STM32L4_ADC),y)
CSRCS += stm32_adc.c
endif
ifeq ($(CONFIG_STM32L4_DAC),y)
CSRCS += stm32_dac.c
endif
ifeq ($(CONFIG_DAC7571),y)
CSRCS += stm32_dac7571.c
endif

12
boards/arm/stm32l4/nucleo-l432kc/src/nucleo-l432kc.h
View file

@ -184,6 +184,18 @@ int stm32l4_pwm_setup(void);
int stm32l4_adc_setup(void);
#endif
/****************************************************************************
* Name: stm32l4_dac_setup
*
* Description:
* Initialize DAC and register the DAC driver.
*
****************************************************************************/
#ifdef CONFIG_DAC
int stm32l4_dac_setup(void);
#endif
/****************************************************************************
* Name: stm32_dac7571initialize
*

10
boards/arm/stm32l4/nucleo-l432kc/src/stm32_appinit.c
View file

@ -257,6 +257,16 @@ int board_app_initialize(uintptr_t arg)
}
#endif
#ifdef CONFIG_STM32L4_DAC
/* Initialize DAC and register the DAC driver. */
ret = stm32l4_dac_setup();
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: stm32l4_dac_setup failed: %d\n", ret);
}
#endif
#ifdef CONFIG_DAC7571
/* Initialize and register DAC7571 */

84
boards/arm/stm32l4/nucleo-l432kc/src/stm32_dac.c Normal file
View file

@ -0,0 +1,84 @@
/****************************************************************************
* boards/arm/stm32l4/nucleo-l432kc/src/stm32_dac.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/board.h>
#include <nuttx/analog/dac.h>
#include "stm32l4_gpio.h"
#include "stm32l4_dac.h"
#include "nucleo-l432kc.h"
#include <arch/board/board.h>
/****************************************************************************
* Private Data
****************************************************************************/
#ifdef CONFIG_STM32L4_DAC1
static struct dac_dev_s *g_dac;
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: stm32l4_dac_setup
****************************************************************************/
int stm32l4_dac_setup(void)
{
static bool initialized = false;
if (!initialized)
{
#ifdef CONFIG_STM32L4_DAC1
int ret;
g_dac = stm32l4_dacinitialize(0);
if (g_dac == NULL)
{
aerr("ERROR: Failed to get DAC1 interface\n");
return -ENODEV;
}
/* Register the DAC driver at "/dev/dac0" */
ret = dac_register("/dev/dac0", g_dac);
if (ret < 0)
{
aerr("ERROR: dac_register failed: %d\n", ret);
return ret;
}
#endif
initialized = true;
}
return OK;
}