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