124 lines
2.9 KiB
C
124 lines
2.9 KiB
C
/*
|
|
* Copyright (c) 2006-2022, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2019-04-20 tyustli the first version.
|
|
*
|
|
*/
|
|
#include <rtthread.h>
|
|
|
|
#ifdef BSP_USING_ADC
|
|
|
|
#if !defined(BSP_USING_ADC1) && !defined(BSP_USING_ADC2)
|
|
#error "Please define at least one BSP_USING_ADCx"
|
|
#endif
|
|
|
|
#if (defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
|
|
#error "Please don't define 'FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL'!"
|
|
#endif
|
|
|
|
#define LOG_TAG "drv.adc"
|
|
#include <drv_log.h>
|
|
#include "drv_adc.h"
|
|
#include "fsl_adc.h"
|
|
#include <rtdevice.h>
|
|
|
|
static rt_err_t imxrt_hp_adc_enabled(struct rt_adc_device *device, rt_uint32_t channel, rt_bool_t enabled)
|
|
{
|
|
return RT_EOK;
|
|
}
|
|
|
|
static rt_err_t imxrt_hp_adc_convert(struct rt_adc_device *device, rt_uint32_t channel, rt_uint32_t *value)
|
|
{
|
|
adc_channel_config_t adc_channel;
|
|
ADC_Type *base;
|
|
base = (ADC_Type *)(device->parent.user_data);
|
|
|
|
adc_channel.channelNumber = channel;
|
|
adc_channel.enableInterruptOnConversionCompleted = false;
|
|
|
|
ADC_SetChannelConfig(base, 0, &adc_channel);
|
|
|
|
while (0U == ADC_GetChannelStatusFlags(base, 0))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
*value = ADC_GetChannelConversionValue(base, 0);
|
|
|
|
return RT_EOK;
|
|
}
|
|
|
|
static struct rt_adc_ops imxrt_adc_ops =
|
|
{
|
|
.enabled = imxrt_hp_adc_enabled,
|
|
.convert = imxrt_hp_adc_convert,
|
|
};
|
|
|
|
#if defined(BSP_USING_ADC1)
|
|
|
|
static adc_config_t ADC1_config_value;
|
|
static struct rt_adc_device adc1_device;
|
|
|
|
#endif /* BSP_USING_ADC1 */
|
|
|
|
#if defined(BSP_USING_ADC2)
|
|
|
|
static adc_config_t ADC2_config_value;
|
|
static struct rt_adc_device adc2_device;
|
|
|
|
#endif /* BSP_USING_ADC2 */
|
|
|
|
int rt_hw_adc_init(void)
|
|
{
|
|
int result = RT_EOK;
|
|
|
|
#if defined(BSP_USING_ADC1)
|
|
|
|
ADC_GetDefaultConfig(&ADC1_config_value);
|
|
ADC_Init(ADC1, &ADC1_config_value);
|
|
|
|
#if !(defined(FSL_FEATURE_ADC_SUPPORT_HARDWARE_TRIGGER_REMOVE) && FSL_FEATURE_ADC_SUPPORT_HARDWARE_TRIGGER_REMOVE)
|
|
ADC_EnableHardwareTrigger(ADC1, false);
|
|
#endif
|
|
ADC_DoAutoCalibration(ADC1);
|
|
|
|
result = rt_hw_adc_register(&adc1_device, "adc1", &imxrt_adc_ops, ADC1);
|
|
|
|
if (result != RT_EOK)
|
|
{
|
|
LOG_E("register adc1 device failed error code = %d\n", result);
|
|
}
|
|
|
|
#endif /* BSP_USING_ADC1 */
|
|
|
|
#if defined(BSP_USING_ADC2)
|
|
|
|
ADC_GetDefaultConfig(&ADC2_config_value);
|
|
ADC_Init(ADC2, &ADC2_config_value);
|
|
|
|
#if !(defined(FSL_FEATURE_ADC_SUPPORT_HARDWARE_TRIGGER_REMOVE) && FSL_FEATURE_ADC_SUPPORT_HARDWARE_TRIGGER_REMOVE)
|
|
ADC_EnableHardwareTrigger(ADC2, false);
|
|
#endif
|
|
ADC_DoAutoCalibration(ADC2);
|
|
|
|
result = rt_hw_adc_register(&adc2_device, "adc2", &imxrt_adc_ops, ADC2);
|
|
|
|
if (result != RT_EOK)
|
|
{
|
|
LOG_E("register adc2 device failed error code = %d\n", result);
|
|
}
|
|
|
|
#endif /* BSP_USING_ADC2 */
|
|
|
|
return result;
|
|
}
|
|
|
|
INIT_DEVICE_EXPORT(rt_hw_adc_init);
|
|
|
|
#endif /* BSP_USING_ADC */
|
|
|