/* * Copyright (C) 2018 Shanghai Eastsoft Microelectronics Co., Ltd. * * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the License); you may * not use this file except in compliance with the License. * You may obtain a copy of the License at * * www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an AS IS BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * Change Logs: * Date Author Notes * 2019-04-03 wangyq the first version * 2019-11-01 wangyq update libraries * 2021-04-20 liuhy the second version */ #include #include #include #include "board.h" #include "drv_adc.h" #ifdef RT_USING_ADC /* define adc instance */ #ifdef BSP_USING_ADC0 static struct rt_adc_device _device_adc0; #endif /*BSP_USING_ADC0*/ #ifdef BSP_USING_ADC1 static struct rt_adc_device _device_adc1; #endif /*BSP_USING_ADC1*/ /* enable or disable adc */ static rt_err_t es32f3_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 es32f3_adc_get_channel(rt_uint32_t channel) { adc_channel_t es32f3_channel; gpio_init_t gpio_initstruct; /* Initialize ADC pin */ gpio_initstruct.mode = GPIO_MODE_INPUT; gpio_initstruct.pupd = GPIO_FLOATING; gpio_initstruct.odos = GPIO_OPEN_DRAIN; gpio_initstruct.podrv = GPIO_OUT_DRIVE_1; gpio_initstruct.nodrv = GPIO_OUT_DRIVE_1; 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: es32f3_channel = ADC_CHANNEL_0; ald_gpio_init(ES_GPIO_ADC_CH0_GPIO, ES_GPIO_ADC_CH0_PIN, &gpio_initstruct); break; case 1: es32f3_channel = ADC_CHANNEL_1; ald_gpio_init(ES_GPIO_ADC_CH1_GPIO, ES_GPIO_ADC_CH1_PIN, &gpio_initstruct); break; case 2: es32f3_channel = ADC_CHANNEL_2; ald_gpio_init(ES_GPIO_ADC_CH2_GPIO, ES_GPIO_ADC_CH2_PIN, &gpio_initstruct); break; case 3: es32f3_channel = ADC_CHANNEL_3; ald_gpio_init(ES_GPIO_ADC_CH3_GPIO, ES_GPIO_ADC_CH3_PIN, &gpio_initstruct); break; case 4: es32f3_channel = ADC_CHANNEL_4; ald_gpio_init(ES_GPIO_ADC_CH4_GPIO, ES_GPIO_ADC_CH4_PIN, &gpio_initstruct); break; case 5: es32f3_channel = ADC_CHANNEL_5; ald_gpio_init(ES_GPIO_ADC_CH5_GPIO, ES_GPIO_ADC_CH5_PIN, &gpio_initstruct); break; case 6: es32f3_channel = ADC_CHANNEL_6; ald_gpio_init(ES_GPIO_ADC_CH6_GPIO, ES_GPIO_ADC_CH6_PIN, &gpio_initstruct); break; case 7: es32f3_channel = ADC_CHANNEL_7; ald_gpio_init(ES_GPIO_ADC_CH7_GPIO, ES_GPIO_ADC_CH7_PIN, &gpio_initstruct); break; case 8: es32f3_channel = ADC_CHANNEL_8; ald_gpio_init(ES_GPIO_ADC_CH8_GPIO, ES_GPIO_ADC_CH8_PIN, &gpio_initstruct); break; case 9: es32f3_channel = ADC_CHANNEL_9; ald_gpio_init(ES_GPIO_ADC_CH9_GPIO, ES_GPIO_ADC_CH9_PIN, &gpio_initstruct); break; case 10: es32f3_channel = ADC_CHANNEL_10; ald_gpio_init(ES_GPIO_ADC_CH10_GPIO, ES_GPIO_ADC_CH10_PIN, &gpio_initstruct); break; case 11: es32f3_channel = ADC_CHANNEL_11; ald_gpio_init(ES_GPIO_ADC_CH11_GPIO, ES_GPIO_ADC_CH11_PIN, &gpio_initstruct); break; case 12: es32f3_channel = ADC_CHANNEL_12; ald_gpio_init(ES_GPIO_ADC_CH12_GPIO, ES_GPIO_ADC_CH12_PIN, &gpio_initstruct); break; case 13: es32f3_channel = ADC_CHANNEL_13; ald_gpio_init(ES_GPIO_ADC_CH13_GPIO, ES_GPIO_ADC_CH13_PIN, &gpio_initstruct); break; case 14: es32f3_channel = ADC_CHANNEL_14; ald_gpio_init(ES_GPIO_ADC_CH14_GPIO, ES_GPIO_ADC_CH14_PIN, &gpio_initstruct); break; case 15: es32f3_channel = ADC_CHANNEL_15; ald_gpio_init(ES_GPIO_ADC_CH15_GPIO, ES_GPIO_ADC_CH15_PIN, &gpio_initstruct); break; default: break; } return es32f3_channel; } static rt_err_t es32f3_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_nch_conf_t nm_config; RT_ASSERT(device != RT_NULL); RT_ASSERT(value != RT_NULL); /* config adc channel */ nm_config.ch = es32f3_adc_get_channel(channel); nm_config.idx = ADC_NCH_IDX_1; nm_config.samp = ES_ADC0_NCH_SAMPLETIME; ald_adc_normal_channel_config(_hadc, &nm_config); ald_adc_normal_start(_hadc); if (ald_adc_normal_poll_for_conversion(_hadc, 5000) == OK) *value = ald_adc_normal_get_value(_hadc); return RT_EOK; } static const struct rt_adc_ops es32f3_adc_ops = { es32f3_adc_enabled, es32f3_get_adc_value, }; int rt_hw_adc_init(void) { int result = RT_EOK; adc_handle_t _h_adc; /* adc function initialization */ _h_adc.init.scan = DISABLE; _h_adc.init.cont = DISABLE; _h_adc.init.disc = ADC_ALL_DISABLE; _h_adc.init.disc_nr = ADC_DISC_NR_1; _h_adc.init.nch_nr = ADC_NCH_NR_16; _h_adc.init.nche_sel = ADC_NCHESEL_MODE_ALL; _h_adc.init.cont = DISABLE; _h_adc.init.n_ref = ADC_NEG_REF_VSS; _h_adc.init.p_ref = ADC_POS_REF_VDD; #ifdef BSP_USING_ADC0 static adc_handle_t _h_adc0; _h_adc0.init = _h_adc.init; _h_adc0.perh = ADC0; _h_adc0.init.align = ES_ADC0_ALIGN; _h_adc0.init.data_bit = ES_ADC0_DATA_BIT; _h_adc0.init.div = ES_ADC0_CLK_DIV; ald_adc_init(&_h_adc0); rt_hw_adc_register(&_device_adc0, ES_DEVICE_NAME_ADC0, &es32f3_adc_ops, &_h_adc0); #endif /*BSP_USING_ADC0*/ #ifdef BSP_USING_ADC1 static adc_handle_t _h_adc1; _h_adc1.init = _h_adc.init; _h_adc1.perh = ADC1; _h_adc1.init.align = ES_ADC1_ALIGN; _h_adc1.init.data_bit = ES_ADC1_DATA_BIT; _h_adc1.init.div = ES_ADC1_CLK_DIV; ald_adc_init(&_h_adc1); rt_hw_adc_register(&_device_adc1, ES_DEVICE_NAME_ADC1, &es32f3_adc_ops, &_h_adc1); #endif /*BSP_USING_ADC1*/ return result; } INIT_BOARD_EXPORT(rt_hw_adc_init); #endif