| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 |
| * |
| * http://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. |
| */ |
| |
| #ifndef _SAMD21_HAL_ADC_H |
| #define _SAMD21_HAL_ADC_H |
| |
| /* this structure is passed to the BSP for configuration options */ |
| enum samd_adc_reference_voltage { |
| SAMD21_ADC_REFERENCE_INT1V, |
| SAMD21_ADC_REFERENCE_INTVCC0, |
| SAMD21_ADC_REFERENCE_INTVCC1, |
| SAMD21_ADC_REFERENCE_AREFA, |
| SAMD21_ADC_REFERENCE_AREFB, |
| }; |
| |
| enum samd_adc_analog_channel { |
| SAMD21_ANALOG_0 = 0, |
| SAMD21_ANALOG_1, |
| SAMD21_ANALOG_2, |
| SAMD21_ANALOG_3, |
| SAMD21_ANALOG_4, |
| SAMD21_ANALOG_5, |
| SAMD21_ANALOG_6, |
| SAMD21_ANALOG_7, |
| SAMD21_ANALOG_8, |
| SAMD21_ANALOG_9, |
| SAMD21_ANALOG_10, |
| SAMD21_ANALOG_11, |
| SAMD21_ANALOG_12, |
| SAMD21_ANALOG_13, |
| SAMD21_ANALOG_14, |
| SAMD21_ANALOG_15, |
| SAMD21_ANALOG_16, |
| SAMD21_ANALOG_17, |
| SAMD21_ANALOG_18, |
| SAMD21_ANALOG_19, |
| SAMD21_ANALOG_TEMP, |
| SAMD21_ANALOG_BANDGAP, |
| SAMD21_ANALOG_SCALEDCOREVCC, |
| SAMD21_ANALOG_SCALEDIOVCC, |
| SAMD21_ANALOG_ADC_DAC, |
| SAMD21_ANALOG_MAX, |
| }; |
| |
| enum samd_adc_resolution { |
| SAMD21_RESOLUTION_8_BITS, |
| SAMD21_RESOLUTION_10_BITS, |
| SAMD21_RESOLUTION_12_BITS, |
| }; |
| |
| enum samd_adc_gain { |
| SAMD21_GAIN_DIV2, |
| SAMD21_GAIN_1X, |
| SAMD21_GAIN_2X, |
| SAMD21_GAIN_4X, |
| SAMD21_GAIN_8X, |
| SAMD21_GAIN_16X, |
| }; |
| |
| struct samd21_adc_config { |
| enum samd_adc_reference_voltage volt; |
| enum samd_adc_resolution resolution_bits; |
| enum samd_adc_gain gain; |
| int voltage_mvolts; |
| }; |
| |
| /* This creates a new ADC object for this ADC source */ |
| struct hal_adc *samd21_adc_create(enum samd_adc_analog_channel chan, |
| const struct samd21_adc_config *pconfig); |
| |
| |
| #endif /* _SAMD21_HAL_ADC_H */ |
| |