124 lines
2.9 KiB
C
124 lines
2.9 KiB
C
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/*
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* Copyright (c) 2006-2018, 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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* 2019-04-20 tyustli the first version.
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*
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*/
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#include <rtthread.h>
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#ifdef BSP_USING_ADC
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#if !defined(BSP_USING_ADC1) && !defined(BSP_USING_ADC2)
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#error "Please define at least one BSP_USING_ADCx"
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#endif
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#if (defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
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#error "Please don't define 'FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL'!"
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#endif
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#define LOG_TAG "drv.adc"
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#include <drv_log.h>
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#include "drv_adc.h"
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#include "fsl_adc.h"
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#include <rtdevice.h>
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static rt_err_t imxrt_hp_adc_enabled(struct rt_adc_device *device, rt_uint32_t channel, rt_bool_t enabled)
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{
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return RT_EOK;
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}
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static rt_err_t imxrt_hp_adc_convert(struct rt_adc_device *device, rt_uint32_t channel, rt_uint32_t *value)
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{
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adc_channel_config_t adc_channel;
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ADC_Type *base;
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base = (ADC_Type *)(device->parent.user_data);
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adc_channel.channelNumber = channel;
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adc_channel.enableInterruptOnConversionCompleted = false;
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ADC_SetChannelConfig(base, 0, &adc_channel);
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while (0U == ADC_GetChannelStatusFlags(base, 0))
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{
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continue;
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}
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*value = ADC_GetChannelConversionValue(base, 0);
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return RT_EOK;
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}
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static struct rt_adc_ops imxrt_adc_ops =
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{
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.enabled = imxrt_hp_adc_enabled,
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.convert = imxrt_hp_adc_convert,
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};
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#if defined(BSP_USING_ADC1)
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static adc_config_t ADC1_config_value;
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static struct rt_adc_device adc1_device;
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#endif /* BSP_USING_ADC1 */
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#if defined(BSP_USING_ADC2)
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static adc_config_t ADC2_config_value;
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static struct rt_adc_device adc2_device;
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#endif /* BSP_USING_ADC2 */
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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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#if defined(BSP_USING_ADC1)
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ADC_GetDefaultConfig(&ADC1_config_value);
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ADC_Init(ADC1, &ADC1_config_value);
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#if !(defined(FSL_FEATURE_ADC_SUPPORT_HARDWARE_TRIGGER_REMOVE) && FSL_FEATURE_ADC_SUPPORT_HARDWARE_TRIGGER_REMOVE)
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ADC_EnableHardwareTrigger(ADC1, false);
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#endif
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ADC_DoAutoCalibration(ADC1);
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result = rt_hw_adc_register(&adc1_device, "adc1", &imxrt_adc_ops, ADC1);
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if (result != RT_EOK)
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{
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LOG_E("register adc1 device failed error code = %d\n", result);
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}
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#endif /* BSP_USING_ADC1 */
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#if defined(BSP_USING_ADC2)
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ADC_GetDefaultConfig(&ADC2_config_value);
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ADC_Init(ADC2, &ADC2_config_value);
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#if !(defined(FSL_FEATURE_ADC_SUPPORT_HARDWARE_TRIGGER_REMOVE) && FSL_FEATURE_ADC_SUPPORT_HARDWARE_TRIGGER_REMOVE)
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ADC_EnableHardwareTrigger(ADC2, false);
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#endif
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ADC_DoAutoCalibration(ADC2);
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result = rt_hw_adc_register(&adc2_device, "adc2", &imxrt_adc_ops, ADC2);
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if (result != RT_EOK)
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{
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LOG_E("register adc2 device failed error code = %d\n", result);
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}
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#endif /* BSP_USING_ADC2 */
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return result;
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}
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INIT_DEVICE_EXPORT(rt_hw_adc_init);
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#endif /* BSP_USING_ADC */
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