96 lines
2.1 KiB
C
96 lines
2.1 KiB
C
/*
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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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* 2023-06-04 Chushicheng 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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#include "hardware/adc.h"
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#ifdef 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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static struct pico_adc_config adc_config[] =
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{
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#ifdef BSP_USING_ADC0
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ADC0_CONFIG,
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#endif
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#ifdef BSP_USING_ADC1
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ADC1_CONFIG,
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#endif
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#ifdef BSP_USING_ADC2
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ADC2_CONFIG,
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#endif
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};
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static struct pico_adc pico_adc_obj[sizeof(adc_config) / sizeof(adc_config[0])];
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static rt_err_t pico_adc_enabled(struct rt_adc_device *device, rt_int8_t channel, rt_bool_t enabled)
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{
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struct pico_adc_config *pico_adc_handler;
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RT_ASSERT(device != RT_NULL);
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pico_adc_handler = device->parent.user_data;
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if (enabled)
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{
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adc_gpio_init(pico_adc_handler->pin);
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adc_select_input(pico_adc_handler->channel);
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}
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return RT_EOK;
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}
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static rt_err_t pico_adc_get_value(struct rt_adc_device *device, rt_int8_t channel, rt_uint32_t *value)
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{
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RT_ASSERT(device != RT_NULL);
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RT_ASSERT(value != RT_NULL);
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/* get ADC value */
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*value = (rt_uint32_t)adc_read();
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return RT_EOK;
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}
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static const struct rt_adc_ops pico_adc_ops =
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{
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.enabled = pico_adc_enabled,
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.convert = pico_adc_get_value,
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.get_resolution = RT_NULL,
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.get_vref = RT_NULL,
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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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for (rt_size_t i = 0; i < sizeof(pico_adc_obj) / sizeof(struct pico_adc); i++)
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{
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/* register ADC device */
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if (rt_hw_adc_register(&pico_adc_obj[i].pico_adc_device, adc_config[i].device_name, &pico_adc_ops, &adc_config[i]) == RT_EOK)
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{
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LOG_D("%s init success", adc_config[i].device_name);
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}
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else
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{
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LOG_E("%s register failed", adc_config[i].device_name);
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result = -RT_ERROR;
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}
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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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