mirror of https://github.com/ARMmbed/mbed-os.git
115 lines
3.1 KiB
C
115 lines
3.1 KiB
C
/* mbed Microcontroller Library
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* Copyright (c) 2006-2015 ARM Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "mbed_assert.h"
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#include "analogin_api.h"
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#include "cmsis.h"
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#include "pinmap.h"
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#define ADC_12BIT_RANGE 0xFFF
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static const PinMap PinMap_ADC[] = {
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{A0_0, ADC0_0, 0},
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{A0_1, ADC0_1, 0},
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{A0_2, ADC0_2, 0},
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{A0_3, ADC0_3, 0},
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{A0_4, ADC0_4, 0},
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{A0_5, ADC0_5, 0},
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{A1_0, ADC0_6, 0},
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{A1_1, ADC0_7, 0},
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{A1_2, ADC0_8, 0},
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{A1_3, ADC0_9, 0},
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{A1_4, ADC0_10, 0},
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{A1_5, ADC0_11, 0},
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{NC, NC, 0}
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};
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static const PinMap PinMap_SPI_SCLK[] = {
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{ADC_SCLK , SPI_3, 0},
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{NC , NC , 0}
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};
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static const PinMap PinMap_SPI_MOSI[] = {
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{ADC_MOSI, SPI_3, 0},
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{NC , NC , 0}
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};
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static const PinMap PinMap_SPI_MISO[] = {
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{ADC_MISO, SPI_3, 0},
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{NC , NC , 0}
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};
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static const PinMap PinMap_SPI_SSEL[] = {
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{ADC_SSEL, SPI_3, 0},
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{NC , NC , 0}
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};
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#define ADC_RANGE ADC_12BIT_RANGE
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int analog_spi_inited = 0;
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void analogin_init(analogin_t *obj, PinName pin) {
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obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
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MBED_ASSERT(obj->adc != (ADCName)NC);
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obj->pin = pin;
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obj->pin_number = pin-600;
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obj->address = (0x0000 | (pin-600));
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SPIName adc_mosi = (SPIName)pinmap_peripheral(ADC_MOSI, PinMap_SPI_MOSI);
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SPIName adc_miso = (SPIName)pinmap_peripheral(ADC_MISO, PinMap_SPI_MISO);
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SPIName adc_sclk = (SPIName)pinmap_peripheral(ADC_SCLK, PinMap_SPI_SCLK);
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SPIName adc_ssel = (SPIName)pinmap_peripheral(ADC_SSEL, PinMap_SPI_SSEL);
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SPIName adc_data = (SPIName)pinmap_merge(adc_mosi, adc_miso);
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SPIName adc_cntl = (SPIName)pinmap_merge(adc_sclk, adc_ssel);
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obj->adc_spi = (MPS2_SSP_TypeDef*)pinmap_merge(adc_data, adc_cntl);
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if(analog_spi_inited == 0){
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obj->adc_spi->CR1 = 0;
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obj->adc_spi->CR0 = SSP_CR0_SCR_DFLT | SSP_CR0_FRF_MOT | SSP_CR0_DSS_16;
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obj->adc_spi->CPSR = SSP_CPSR_DFLT;
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obj->adc_spi->IMSC = 0x8;
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obj->adc_spi->DMACR = 0;
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obj->adc_spi->CR1 = SSP_CR1_SSE_Msk;
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obj->adc_spi->ICR = 0x3;
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analog_spi_inited = 1;
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}
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pinmap_pinout(ADC_MOSI, PinMap_SPI_MOSI);
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pinmap_pinout(ADC_MISO, PinMap_SPI_MISO);
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pinmap_pinout(ADC_SCLK, PinMap_SPI_SCLK);
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pinmap_pinout(ADC_SSEL, PinMap_SPI_SSEL);
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pinmap_pinout(pin, PinMap_ADC);
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}
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static inline uint32_t adc_read(analogin_t *obj) {
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return 0;
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}
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float analogin_read(analogin_t *obj) {
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uint32_t value = adc_read(obj);
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return 0;
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}
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uint16_t analogin_read_u16(analogin_t *obj) {
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return 0;
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}
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const PinMap *analogin_pinmap()
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{
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return PinMap_ADC;
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}
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