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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-06-18 thread-liu the first version
* 2020-10-09 thread-liu Porting for stm32h7xx
*/
#include <board.h>
#if defined(BSP_USING_DAC1) || defined(BSP_USING_DAC2)
#include "drv_config.h"
//#define DRV_DEBUG
#define LOG_TAG "drv.dac"
#include <drv_log.h>
static DAC_HandleTypeDef dac_config[] =
{
#ifdef BSP_USING_DAC1
DAC1_CONFIG,
#endif
#ifdef BSP_USING_DAC2
DAC2_CONFIG,
#endif
};
struct stm32_dac
{
DAC_HandleTypeDef DAC_Handler;
struct rt_dac_device stm32_dac_device;
};
static struct stm32_dac stm32_dac_obj[sizeof(dac_config) / sizeof(dac_config[0])];
static rt_uint32_t stm32_dac_get_channel(rt_uint32_t channel)
{
rt_uint32_t stm32_channel = 0;
switch (channel)
{
case 1:
stm32_channel = DAC_CHANNEL_1;
break;
case 2:
stm32_channel = DAC_CHANNEL_2;
break;
default:
RT_ASSERT(0);
break;
}
return stm32_channel;
}
static rt_err_t stm32_dac_enabled(struct rt_dac_device *device, rt_uint32_t channel)
{
uint32_t dac_channel;
DAC_HandleTypeDef *stm32_dac_handler;
RT_ASSERT(device != RT_NULL);
stm32_dac_handler = device->parent.user_data;
#if defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7) || defined(SOC_SERIES_STM32L4) || defined(SOC_SERIES_STM32F4)
if ((channel <= 2) && (channel > 0))
{
/* set stm32 dac channel */
dac_channel = stm32_dac_get_channel(channel);
}
else
{
LOG_E("dac channel must be 1 or 2.");
return -RT_ERROR;
}
HAL_DAC_Start(stm32_dac_handler, dac_channel);
#endif
return RT_EOK;
}
static rt_err_t stm32_dac_disabled(struct rt_dac_device *device, rt_uint32_t channel)
{
uint32_t dac_channel;
DAC_HandleTypeDef *stm32_dac_handler;
RT_ASSERT(device != RT_NULL);
stm32_dac_handler = device->parent.user_data;
#if defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7) || defined(SOC_SERIES_STM32L4) || defined(SOC_SERIES_STM32F4)
if ((channel <= 2) && (channel > 0))
{
/* set stm32 dac channel */
dac_channel = stm32_dac_get_channel(channel);
}
else
{
LOG_E("dac channel must be 1 or 2.");
return -RT_ERROR;
}
HAL_DAC_Stop(stm32_dac_handler, dac_channel);
#endif
return RT_EOK;
}
static rt_uint8_t stm32_dac_get_resolution(struct rt_dac_device *device)
{
DAC_HandleTypeDef *stm32_dac_handler;
RT_ASSERT(device != RT_NULL);
stm32_dac_handler = device->parent.user_data;
(void)stm32_dac_handler;
/* Only has supported DAC_ALIGN_12B_R, so it will return 12 bits */
return 12;
}
static rt_err_t stm32_set_dac_value(struct rt_dac_device *device, rt_uint32_t channel, rt_uint32_t *value)
{
uint32_t dac_channel;
DAC_ChannelConfTypeDef DAC_ChanConf;
DAC_HandleTypeDef *stm32_dac_handler;
RT_ASSERT(device != RT_NULL);
RT_ASSERT(value != RT_NULL);
stm32_dac_handler = device->parent.user_data;
rt_memset(&DAC_ChanConf, 0, sizeof(DAC_ChanConf));
#if defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7) || defined(SOC_SERIES_STM32L4) || defined(SOC_SERIES_STM32F4)
if ((channel <= 2) && (channel > 0))
{
/* set stm32 dac channel */
dac_channel = stm32_dac_get_channel(channel);
}
else
{
LOG_E("dac channel must be 1 or 2.");
return -RT_ERROR;
}
#endif
#if defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7) || defined(SOC_SERIES_STM32L4) || defined(SOC_SERIES_STM32F4)
DAC_ChanConf.DAC_Trigger = DAC_TRIGGER_NONE;
DAC_ChanConf.DAC_OutputBuffer = DAC_OUTPUTBUFFER_DISABLE;
#endif
/* config dac out channel*/
if (HAL_DAC_ConfigChannel(stm32_dac_handler, &DAC_ChanConf, dac_channel) != HAL_OK)
{
LOG_D("Config dac out channel Error!\n");
return -RT_ERROR;
}
/* set dac channel out value*/
if (HAL_DAC_SetValue(stm32_dac_handler, dac_channel, DAC_ALIGN_12B_R, *value) != HAL_OK)
{
LOG_D("Setting dac channel out value Error!\n");
return -RT_ERROR;
}
/* start dac */
if (HAL_DAC_Start(stm32_dac_handler, dac_channel) != HAL_OK)
{
LOG_D("Start dac Error!\n");
return -RT_ERROR;
}
return RT_EOK;
}
static const struct rt_dac_ops stm_dac_ops =
{
.disabled = stm32_dac_disabled,
.enabled = stm32_dac_enabled,
.convert = stm32_set_dac_value,
.get_resolution = stm32_dac_get_resolution,
};
static int stm32_dac_init(void)
{
int result = RT_EOK;
/* save dac name */
char name_buf[5] = {'d', 'a', 'c', '0', 0};
int i = 0;
for (i = 0; i < sizeof(dac_config) / sizeof(dac_config[0]); i++)
{
/* dac init */
name_buf[3] = '0';
stm32_dac_obj[i].DAC_Handler = dac_config[i];
#if defined(DAC1)
if (stm32_dac_obj[i].DAC_Handler.Instance == DAC1)
{
name_buf[3] = '1';
}
#endif
#if defined(DAC2)
if (stm32_dac_obj[i].dac_Handler.Instance == DAC2)
{
name_buf[3] = '2';
}
#endif
if (HAL_DAC_Init(&stm32_dac_obj[i].DAC_Handler) != HAL_OK)
{
LOG_E("%s init failed", name_buf);
result = -RT_ERROR;
}
else
{
/* register dac device */
if (rt_hw_dac_register(&stm32_dac_obj[i].stm32_dac_device, name_buf, &stm_dac_ops, &stm32_dac_obj[i].DAC_Handler) == RT_EOK)
{
LOG_D("%s init success", name_buf);
}
else
{
LOG_E("%s register failed", name_buf);
result = -RT_ERROR;
}
}
}
return result;
}
INIT_DEVICE_EXPORT(stm32_dac_init);
#endif /* BSP_USING_DAC */
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