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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2023-04-18 shelton first version
* 2024-08-30 shelton add support m412/416
*/
#include "drv_common.h"
#if defined(BSP_USING_DAC1)
#include "drv_config.h"
//#define DRV_DEBUG
#define LOG_TAG "drv.dac"
#include <drv_log.h>
struct at32_dac {
char *name;
dac_type *dac_x;
struct rt_dac_device dac_device;
};
enum {
#ifdef BSP_USING_DAC1
DAC1_INDEX,
#endif
};
static struct at32_dac dac_config[] =
{
#ifdef BSP_USING_DAC1
DAC1_CONFIG,
#endif
};
static dac_select_type at32_dac_get_channel(rt_uint32_t channel)
{
dac_select_type at32_channel = DAC1_SELECT;
switch (channel)
{
case 1:
at32_channel = DAC1_SELECT;
break;
case 2:
at32_channel = DAC2_SELECT;
break;
default:
RT_ASSERT(0);
break;
}
return at32_channel;
}
static rt_err_t at32_dac_enabled(struct rt_dac_device *device, rt_uint32_t channel)
{
dac_select_type dac_channel;
dac_type *instance;
RT_ASSERT(device != RT_NULL);
instance = device->parent.user_data;
/* prepare for mult dac instance */
(void)instance;
if ((channel <= 2) && (channel > 0))
{
/* set at32 dac channel */
dac_channel = at32_dac_get_channel(channel);
}
else
{
LOG_E("dac channel must be 1 or 2.");
return -RT_ERROR;
}
#if defined (SOC_SERIES_AT32M412) || defined (SOC_SERIES_AT32M416)
dac_output_enable(dac_channel, TRUE);
#endif
dac_enable(dac_channel, TRUE);
return RT_EOK;
}
static rt_err_t at32_dac_disabled(struct rt_dac_device *device, rt_uint32_t channel)
{
dac_select_type dac_channel;
dac_type *instance;
RT_ASSERT(device != RT_NULL);
instance = device->parent.user_data;
/* prepare for mult dac instance */
(void)instance;
if ((channel <= 2) && (channel > 0))
{
/* set at32 dac channel */
dac_channel = at32_dac_get_channel(channel);
}
else
{
LOG_E("dac channel must be 1 or 2.");
return -RT_ERROR;
}
#if defined (SOC_SERIES_AT32M412) || defined (SOC_SERIES_AT32M416)
dac_output_enable(dac_channel, FALSE);
#endif
dac_enable(dac_channel, FALSE);
return RT_EOK;
}
static rt_uint8_t at32_dac_get_resolution(struct rt_dac_device *device)
{
dac_type *instance;
RT_ASSERT(device != RT_NULL);
instance = device->parent.user_data;
/* prepare for mult dac instance */
(void)instance;
/* Only has supported DAC_ALIGN_12B_R, so it will return 12 bits */
return 12;
}
static rt_err_t at32_set_dac_value(struct rt_dac_device *device, rt_uint32_t channel, rt_uint32_t *value)
{
dac_select_type dac_channel;
dac_type *instance;
RT_ASSERT(device != RT_NULL);
RT_ASSERT(value != RT_NULL);
instance = device->parent.user_data;
/* prepare for mult dac instance */
(void)instance;
if ((channel <= 2) && (channel > 0))
{
/* set at32 dac channel */
dac_channel = at32_dac_get_channel(channel);
}
else
{
LOG_E("dac channel must be 1 or 2.");
return -RT_ERROR;
}
#if !defined (SOC_SERIES_AT32M412) && !defined (SOC_SERIES_AT32M416)
dac_output_buffer_enable(dac_channel, FALSE);
#endif
dac_trigger_enable(dac_channel, FALSE);
/* set dac channel out value*/
if(dac_channel == DAC1_SELECT)
{
#if !defined (SOC_SERIES_AT32M412) && !defined (SOC_SERIES_AT32M416)
dac_1_data_set(DAC1_12BIT_RIGHT, *value);
#else
/* 6-bit */
*value = *value >> 6;
dac_1_data_set(*value);
#endif
}
else
{
#if !defined (SOC_SERIES_AT32M412) && !defined (SOC_SERIES_AT32M416)
dac_2_data_set(DAC2_12BIT_RIGHT, *value);
#else
/* 6-bit */
*value = *value >> 6;
dac_2_data_set(*value);
#endif
}
/* start dac */
dac_enable(dac_channel, TRUE);
return RT_EOK;
}
static const struct rt_dac_ops at32_dac_ops =
{
.disabled = at32_dac_disabled,
.enabled = at32_dac_enabled,
.convert = at32_set_dac_value,
.get_resolution = at32_dac_get_resolution,
};
static int at32_dac_init(void)
{
rt_size_t obj_num;
int index;
obj_num = sizeof(dac_config) / sizeof(struct at32_dac);
rt_err_t result = 0;
for (index = 0; index < obj_num; index++) {
at32_msp_dac_init((void *)(dac_config[index].dac_x));
/* reset dac */
dac_reset();
/* register dac device */
if (rt_hw_dac_register(&dac_config[index].dac_device, dac_config[index].name, &at32_dac_ops, \
&dac_config[index].dac_x) == RT_EOK)
{
LOG_D("%s init success", dac_config[index].name);
}
else
{
LOG_E("%s register failed", dac_config[index].name);
result = -RT_ERROR;
}
}
return result;
}
INIT_DEVICE_EXPORT(at32_dac_init);
#endif /* BSP_USING_DAC */
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