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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2023-03-29 rose_man first version
*/
#include "board.h"
#include "drv_adc.h"
#if defined BSP_USING_ADC
#define DBG_TAG "drv.adc"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
#if defined(BSP_USING_BL70X) || defined(BSP_USING_BL60X)
#define ADC_GPIP_BASE ((uint32_t)0x40002000)
#elif defined(BSP_USING_BL61X) || defined(BSP_USING_BL808)
#define ADC_GPIP_BASE ((uint32_t)0x20002000)
#endif
static struct bflb_adc_config_s adc_config =
{
ADC_CLK_DIV_32,
false,
false,
false,
ADC_RESOLUTION_16B,
ADC_VREF_2P0V
};
struct bl_adc
{
struct rt_adc_device bl_adc_device;
struct bflb_device_s *bflb_device;
};
static struct bl_adc bl_adc_obj;
static rt_err_t bl_adc_enabled(struct rt_adc_device *device, rt_uint32_t channel, rt_bool_t enabled)
{
struct bflb_device_s *bl_adc_handler;
RT_ASSERT(device != RT_NULL);
bl_adc_handler = device->parent.user_data;
struct bflb_adc_channel_s chan;
chan.pos_chan = channel;
chan.neg_chan = ADC_CHANNEL_GND;
bflb_adc_channel_config(bl_adc_handler, &chan, channel);
bflb_adc_link_rxdma(bl_adc_handler, enabled);
if (enabled)
{
bflb_adc_start_conversion(bl_adc_handler);
}
else
{
bflb_adc_stop_conversion(bl_adc_handler);
}
return RT_EOK;
}
static rt_err_t bl_adc_get_value(struct rt_adc_device *device, rt_uint32_t channel, rt_uint32_t *value)
{
struct bflb_device_s *bl_adc_handler;
RT_ASSERT(device != RT_NULL);
RT_ASSERT(value != RT_NULL);
bl_adc_handler = device->parent.user_data;
/* get ADC value */
*value = (rt_uint32_t)bflb_adc_read_raw(bl_adc_handler);
return RT_EOK;
}
static const struct rt_adc_ops bl_adc_ops =
{
.enabled = bl_adc_enabled,
.convert = bl_adc_get_value,
};
int rt_hw_adc_init(void)
{
int result = RT_EOK;
/* ADC init */
bl_adc_obj.bflb_device = bflb_device_get_by_name("adc");
bflb_adc_init(bl_adc_obj.bflb_device, &adc_config);
/* register ADC device */
if (rt_hw_adc_register(&bl_adc_obj.bl_adc_device, "adc", &bl_adc_ops, &bl_adc_obj.bflb_device) == RT_EOK)
{
LOG_D("adc init success");
}
else
{
LOG_E("adc register failed");
result = -RT_ERROR;
}
return result;
}
INIT_BOARD_EXPORT(rt_hw_adc_init);
#endif /* BSP_USING_ADC */
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