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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-10-19 Nations first version
*/
#include "drv_adc.h"
#ifdef RT_USING_ADC
#if defined(BSP_USING_ADC) || defined(BSP_USING_ADC1) || \
defined(BSP_USING_ADC2) || defined(BSP_USING_ADC3) || \
defined(BSP_USING_ADC4)
static struct n32_adc_config adc_config[] =
{
#if defined(SOC_N32L43X) || defined(SOC_N32L40X) || defined(SOC_N32G43X)
#ifdef BSP_USING_ADC
{
"adc",
ADC,
},
#endif
#endif
#ifdef BSP_USING_ADC1
{
"adc1",
ADC1,
},
#endif
#ifdef BSP_USING_ADC2
{
"adc2",
ADC2,
},
#endif
#ifdef BSP_USING_ADC3
{
"adc3",
ADC3,
},
#endif
#ifdef BSP_USING_ADC4
{
"adc4",
ADC4,
},
#endif
};
static struct n32_adc adc_obj[sizeof(adc_config) / sizeof(adc_config[0])] = {0};
static void n32_adc_init(struct n32_adc_config *config)
{
ADC_InitType ADC_InitStructure;
ADC_DeInit((ADC_Module*)config->adc_periph);
/* ADC configuration */
#if defined(SOC_N32G45X) || defined(SOC_N32WB452) || defined(SOC_N32G4FR)
ADC_InitStructure.WorkMode = ADC_WORKMODE_INDEPENDENT;
#endif
ADC_InitStructure.MultiChEn = DISABLE;
ADC_InitStructure.ContinueConvEn = DISABLE;
ADC_InitStructure.ExtTrigSelect = ADC_EXT_TRIGCONV_NONE;
ADC_InitStructure.DatAlign = ADC_DAT_ALIGN_R;
ADC_InitStructure.ChsNumber = 1;
ADC_Init((ADC_Module*)config->adc_periph, &ADC_InitStructure);
/* Enable ADC */
ADC_Enable((ADC_Module*)config->adc_periph, ENABLE);
/* Check ADC Ready */
while (ADC_GetFlagStatusNew((ADC_Module*)config->adc_periph, ADC_FLAG_RDY) == RESET);
/* Start ADC calibration */
ADC_StartCalibration((ADC_Module*)config->adc_periph);
/* Check the end of ADC calibration */
while (ADC_GetCalibrationStatus((ADC_Module*)config->adc_periph));
}
static rt_err_t n32_adc_enabled(struct rt_adc_device *device, rt_uint32_t channel, rt_bool_t enabled)
{
if (channel > ADC_CH_18)
{
return -RT_EINVAL;
}
return RT_EOK;
}
static rt_err_t n32_adc_convert(struct rt_adc_device *device, rt_uint32_t channel, rt_uint32_t *value)
{
struct n32_adc_config *config;
RT_ASSERT(device != RT_NULL);
if (channel > ADC_CH_18)
{
return -RT_EINVAL;
}
config = (struct n32_adc_config *)(device->parent.user_data);
ADC_ConfigRegularChannel((ADC_Module*)config->adc_periph, channel, 1, ADC_SAMP_TIME_239CYCLES5);
/* Start ADC Software Conversion */
ADC_EnableSoftwareStartConv((ADC_Module*)config->adc_periph, ENABLE);
while (ADC_GetFlagStatus((ADC_Module*)config->adc_periph, ADC_FLAG_ENDC)==0)
{
}
ADC_ClearFlag((ADC_Module*)config->adc_periph, ADC_FLAG_ENDC);
ADC_ClearFlag((ADC_Module*)config->adc_periph, ADC_FLAG_STR);
*value = ADC_GetDat((ADC_Module*)config->adc_periph);
return RT_EOK;
}
static struct rt_adc_ops n32_adc_ops =
{
.enabled = n32_adc_enabled,
.convert = n32_adc_convert,
};
int rt_hw_adc_init(void)
{
GPIO_InitType GPIO_InitStructure;
int i = 0;
int result = RT_EOK;
#if defined(SOC_N32L43X) || defined(SOC_N32L40X) || defined(SOC_N32G43X) || defined(SOC_N32G4FR)
#ifdef BSP_USING_ADC
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOA, ENABLE);
RCC_EnableAHBPeriphClk(RCC_AHB_PERIPH_ADC, ENABLE);
GPIO_InitStruct(&GPIO_InitStructure);
/* Configure PA.01 PA.02 as analog input */
GPIO_InitStructure.Pin = GPIO_PIN_1 | GPIO_PIN_2;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Analog;
GPIO_InitPeripheral(GPIOA, &GPIO_InitStructure);
#endif
#endif
#ifdef BSP_USING_ADC1
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOA, ENABLE);
RCC_EnableAHBPeriphClk(RCC_AHB_PERIPH_ADC1, ENABLE);
GPIO_InitStruct(&GPIO_InitStructure);
/* Configure PA.01 PA.03 as analog input */
GPIO_InitStructure.Pin = GPIO_PIN_1 | GPIO_PIN_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitPeripheral(GPIOA, &GPIO_InitStructure);
#endif /* BSP_USING_ADC1 */
#ifdef BSP_USING_ADC2
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOA, ENABLE);
RCC_EnableAHBPeriphClk(RCC_AHB_PERIPH_ADC2, ENABLE);
GPIO_InitStruct(&GPIO_InitStructure);
/* Configure PA.04 PA.05 as analog input */
GPIO_InitStructure.Pin = GPIO_PIN_4 | GPIO_PIN_5;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitPeripheral(GPIOA, &GPIO_InitStructure);
#endif /* BSP_USING_ADC2 */
#ifdef BSP_USING_ADC3
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOB, ENABLE);
RCC_EnableAHBPeriphClk(RCC_AHB_PERIPH_ADC3, ENABLE);
GPIO_InitStruct(&GPIO_InitStructure);
/* Configure PB.11 PB.13 as analog input */
GPIO_InitStructure.Pin = GPIO_PIN_11 | GPIO_PIN_13;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitPeripheral(GPIOB, &GPIO_InitStructure);
#endif /* BSP_USING_ADC3 */
#ifdef BSP_USING_ADC4
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOB, ENABLE);
RCC_EnableAHBPeriphClk(RCC_AHB_PERIPH_ADC4, ENABLE);
GPIO_InitStruct(&GPIO_InitStructure);
/* Configure PB.14 PB.15 as analog input */
GPIO_InitStructure.Pin = GPIO_PIN_14 | GPIO_PIN_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitPeripheral(GPIOB, &GPIO_InitStructure);
#endif /* BSP_USING_ADC4 */
/* RCC_ADCHCLK_DIV16*/
ADC_ConfigClk(ADC_CTRL3_CKMOD_AHB, RCC_ADCHCLK_DIV16);
/* Selsect HSE as RCC ADC1M CLK Source */
RCC_ConfigAdc1mClk(RCC_ADC1MCLK_SRC_HSE, RCC_ADC1MCLK_DIV8);
for (i = 0; i < sizeof(adc_obj) / sizeof(adc_obj[0]); i++)
{
adc_obj[i].config = &adc_config[i];
n32_adc_init(&adc_config[i]);
rt_hw_adc_register(&adc_obj[i].adc_device, \
adc_obj[i].config->name, &n32_adc_ops, adc_obj[i].config);
}
return result;
}
INIT_DEVICE_EXPORT(rt_hw_adc_init);
#endif /* defined(BSP_USING_ADC1) || defined(BSP_USING_ADC2) || defined(BSP_USING_ADC3) || defined(BSP_USING_ADC4) */
#endif /* RT_USING_ADC */
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