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/*
* Copyright (C) 2018 Shanghai Eastsoft Microelectronics Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2019-04-03 wangyq the first version
*/
#include <rthw.h>
#include <rtthread.h>
#include <rtdevice.h>
#include "board.h"
#include "drv_adc.h"
#include <ald_gpio.h>
#include <ald_adc.h>
#ifdef RT_USING_ADC
/* define adc instance */
static struct rt_adc_device _device_adc0;
/* enable or disable adc */
static rt_err_t es32f0_adc_enabled(struct rt_adc_device *device, rt_uint32_t channel, rt_bool_t enabled)
{
adc_handle_t *_hadc = (adc_handle_t *)device->parent.user_data;
RT_ASSERT(device != RT_NULL);
if (enabled)
{
ADC_ENABLE(_hadc); ;
}
else
{
ADC_DISABLE(_hadc);
}
return RT_EOK;
}
static adc_channel_t es32f0_adc_get_channel(rt_uint32_t channel)
{
adc_channel_t es32f0_channel;
gpio_init_t gpio_initstruct;
/* Initialize ADC pin */
gpio_initstruct.mode = GPIO_MODE_INPUT;
gpio_initstruct.pupd = GPIO_FLOATING;
gpio_initstruct.odrv = GPIO_OUT_DRIVE_NORMAL;
gpio_initstruct.flt = GPIO_FILTER_DISABLE;
gpio_initstruct.type = GPIO_TYPE_CMOS;
gpio_initstruct.func = GPIO_FUNC_0;
/* select gpio pin as adc function */
switch (channel)
{
case 0:
es32f0_channel = ADC_CHANNEL_0;
gpio_init(GPIOC, GPIO_PIN_0, &gpio_initstruct);
break;
case 1:
es32f0_channel = ADC_CHANNEL_1;
gpio_init(GPIOC, GPIO_PIN_1, &gpio_initstruct);
break;
case 2:
es32f0_channel = ADC_CHANNEL_2;
gpio_init(GPIOC, GPIO_PIN_2, &gpio_initstruct);
break;
case 3:
es32f0_channel = ADC_CHANNEL_3;
gpio_init(GPIOC, GPIO_PIN_3, &gpio_initstruct);
break;
case 4:
es32f0_channel = ADC_CHANNEL_4;
gpio_init(GPIOA, GPIO_PIN_0, &gpio_initstruct);
break;
case 5:
es32f0_channel = ADC_CHANNEL_5;
gpio_init(GPIOA, GPIO_PIN_1, &gpio_initstruct);
break;
case 6:
es32f0_channel = ADC_CHANNEL_6;
gpio_init(GPIOA, GPIO_PIN_2, &gpio_initstruct);
break;
case 7:
es32f0_channel = ADC_CHANNEL_7;
gpio_init(GPIOA, GPIO_PIN_3, &gpio_initstruct);
break;
case 8:
es32f0_channel = ADC_CHANNEL_8;
gpio_init(GPIOA, GPIO_PIN_4, &gpio_initstruct);
break;
case 9:
es32f0_channel = ADC_CHANNEL_9;
gpio_init(GPIOA, GPIO_PIN_5, &gpio_initstruct);
break;
case 10:
es32f0_channel = ADC_CHANNEL_10;
gpio_init(GPIOA, GPIO_PIN_6, &gpio_initstruct);
break;
case 11:
es32f0_channel = ADC_CHANNEL_11;
gpio_init(GPIOA, GPIO_PIN_7, &gpio_initstruct);
break;
case 12:
es32f0_channel = ADC_CHANNEL_12;
gpio_init(GPIOC, GPIO_PIN_4, &gpio_initstruct);
break;
case 13:
es32f0_channel = ADC_CHANNEL_13;
gpio_init(GPIOC, GPIO_PIN_5, &gpio_initstruct);
break;
case 14:
es32f0_channel = ADC_CHANNEL_14;
gpio_init(GPIOB, GPIO_PIN_0, &gpio_initstruct);
break;
case 15:
es32f0_channel = ADC_CHANNEL_15;
gpio_init(GPIOB, GPIO_PIN_1, &gpio_initstruct);
break;
case 16:
es32f0_channel = ADC_CHANNEL_16;
break;
case 17:
es32f0_channel = ADC_CHANNEL_17;
break;
case 18:
es32f0_channel = ADC_CHANNEL_18;
break;
default:
break;
}
return es32f0_channel;
}
static rt_err_t es32f0_get_adc_value(struct rt_adc_device *device, rt_uint32_t channel, rt_uint32_t *value)
{
adc_handle_t *_hadc = (adc_handle_t *)device->parent.user_data;
adc_channel_conf_t nm_config;
RT_ASSERT(device != RT_NULL);
RT_ASSERT(value != RT_NULL);
/* config adc channel */
nm_config.channel = es32f0_adc_get_channel(channel);
nm_config.rank = ADC_NC_RANK_1;
nm_config.sampling_time = ADC_SAMPLETIME_4;
adc_normal_channel_config(_hadc, &nm_config);
adc_normal_start(_hadc);
if (adc_normal_poll_for_conversion(_hadc, 5000) == OK)
*value = adc_normal_get_value(_hadc);
return RT_EOK;
}
static const struct rt_adc_ops es32f0_adc_ops =
{
es32f0_adc_enabled,
es32f0_get_adc_value,
};
int rt_hw_adc_init(void)
{
int result = RT_EOK;
static adc_handle_t _h_adc0;
/* adc function initialization */
_h_adc0.perh = ADC0;
_h_adc0.init.data_align = ADC_DATAALIGN_RIGHT;
_h_adc0.init.scan_mode = ADC_SCAN_DISABLE;
_h_adc0.init.cont_mode = DISABLE;
_h_adc0.init.conv_nbr = ADC_NM_NBR_1;
_h_adc0.init.disc_mode = DISABLE;
_h_adc0.init.disc_nbr = ADC_DISC_NBR_1;
_h_adc0.init.conv_res = ADC_CONV_RES_10;
_h_adc0.init.clk_div = ADC_CKDIV_128;
_h_adc0.init.nche_mode = ADC_NCHESEL_MODE_ALL;
_h_adc0.init.neg_ref = ADC_NEG_REF_VSS;
_h_adc0.init.pos_ref = ADC_POS_REF_VDD;
adc_init(&_h_adc0);
rt_hw_adc_register(&_device_adc0, "adc0", &es32f0_adc_ops, &_h_adc0);
return result;
}
INIT_BOARD_EXPORT(rt_hw_adc_init);
#endif
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