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Dependents:   mbed-TFT-example-NCS36510 mbed-Accelerometer-example-NCS36510 mbed-Accelerometer-example-NCS36510

targets/TARGET_ARM_SSG/TARGET_IOTSS/analogin_api.c@1:f30bdcd2b33b, 2017-02-27 (annotated)

Committer:
jacobjohnson
Date:
Mon Feb 27 17:45:05 2017 +0000
Revision:
1:f30bdcd2b33b
Parent:
0:098463de4c5d 
changed the inputscale from 1 to 7 in analogin_api.c.  This will need to be changed later, and accessed from the main level, but for now this allows the  adc to read a value from 0 to 3.7V, instead of just up to 1V.;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
group-onsemi 0:098463de4c5d 1 /* mbed Microcontroller Library
group-onsemi 0:098463de4c5d 2 * Copyright (c) 2006-2015 ARM Limited
group-onsemi 0:098463de4c5d 3 *
group-onsemi 0:098463de4c5d 4 * Licensed under the Apache License, Version 2.0 (the "License");
group-onsemi 0:098463de4c5d 5 * you may not use this file except in compliance with the License.
group-onsemi 0:098463de4c5d 6 * You may obtain a copy of the License at
group-onsemi 0:098463de4c5d 7 *
group-onsemi 0:098463de4c5d 8 * http://www.apache.org/licenses/LICENSE-2.0
group-onsemi 0:098463de4c5d 9 *
group-onsemi 0:098463de4c5d 10 * Unless required by applicable law or agreed to in writing, software
group-onsemi 0:098463de4c5d 11 * distributed under the License is distributed on an "AS IS" BASIS,
group-onsemi 0:098463de4c5d 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
group-onsemi 0:098463de4c5d 13 * See the License for the specific language governing permissions and
group-onsemi 0:098463de4c5d 14 * limitations under the License.
group-onsemi 0:098463de4c5d 15 */
group-onsemi 0:098463de4c5d 16 #include "mbed_assert.h"
group-onsemi 0:098463de4c5d 17 #include "analogin_api.h"
group-onsemi 0:098463de4c5d 18
group-onsemi 0:098463de4c5d 19 #include "cmsis.h"
group-onsemi 0:098463de4c5d 20 #include "pinmap.h"
group-onsemi 0:098463de4c5d 21
group-onsemi 0:098463de4c5d 22 #define ADC_12BIT_RANGE 0xFFF
group-onsemi 0:098463de4c5d 23
group-onsemi 0:098463de4c5d 24 static const PinMap PinMap_ADC[] = {
group-onsemi 0:098463de4c5d 25 {A0_0, ADC0_0, 0},
group-onsemi 0:098463de4c5d 26 {A0_1, ADC0_1, 0},
group-onsemi 0:098463de4c5d 27 {A0_2, ADC0_2, 0},
group-onsemi 0:098463de4c5d 28 {A0_3, ADC0_3, 0},
group-onsemi 0:098463de4c5d 29 {A0_4, ADC0_4, 0},
group-onsemi 0:098463de4c5d 30 {A0_5, ADC0_5, 0},
group-onsemi 0:098463de4c5d 31 {A1_0, ADC0_6, 0},
group-onsemi 0:098463de4c5d 32 {A1_1, ADC0_7, 0},
group-onsemi 0:098463de4c5d 33 {A1_2, ADC0_8, 0},
group-onsemi 0:098463de4c5d 34 {A1_3, ADC0_9, 0},
group-onsemi 0:098463de4c5d 35 {A1_4, ADC0_10, 0},
group-onsemi 0:098463de4c5d 36 {A1_5, ADC0_11, 0},
group-onsemi 0:098463de4c5d 37 {NC, NC, 0}
group-onsemi 0:098463de4c5d 38 };
group-onsemi 0:098463de4c5d 39
group-onsemi 0:098463de4c5d 40 static const PinMap PinMap_SPI_SCLK[] = {
group-onsemi 0:098463de4c5d 41 {ADC_SCLK , SPI_3, 0},
group-onsemi 0:098463de4c5d 42 {NC , NC , 0}
group-onsemi 0:098463de4c5d 43 };
group-onsemi 0:098463de4c5d 44
group-onsemi 0:098463de4c5d 45 static const PinMap PinMap_SPI_MOSI[] = {
group-onsemi 0:098463de4c5d 46 {ADC_MOSI, SPI_3, 0},
group-onsemi 0:098463de4c5d 47 {NC , NC , 0}
group-onsemi 0:098463de4c5d 48 };
group-onsemi 0:098463de4c5d 49
group-onsemi 0:098463de4c5d 50 static const PinMap PinMap_SPI_MISO[] = {
group-onsemi 0:098463de4c5d 51 {ADC_MISO, SPI_3, 0},
group-onsemi 0:098463de4c5d 52 {NC , NC , 0}
group-onsemi 0:098463de4c5d 53 };
group-onsemi 0:098463de4c5d 54
group-onsemi 0:098463de4c5d 55 static const PinMap PinMap_SPI_SSEL[] = {
group-onsemi 0:098463de4c5d 56 {ADC_SSEL, SPI_3, 0},
group-onsemi 0:098463de4c5d 57 {NC , NC , 0}
group-onsemi 0:098463de4c5d 58 };
group-onsemi 0:098463de4c5d 59
group-onsemi 0:098463de4c5d 60 #define ADC_RANGE ADC_12BIT_RANGE
group-onsemi 0:098463de4c5d 61 int analog_spi_inited = 0;
group-onsemi 0:098463de4c5d 62
group-onsemi 0:098463de4c5d 63 void analogin_init(analogin_t *obj, PinName pin) {
group-onsemi 0:098463de4c5d 64
group-onsemi 0:098463de4c5d 65 obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
group-onsemi 0:098463de4c5d 66 MBED_ASSERT(obj->adc != (ADCName)NC);
group-onsemi 0:098463de4c5d 67 obj->pin = pin;
group-onsemi 0:098463de4c5d 68 obj->pin_number = pin-600;
group-onsemi 0:098463de4c5d 69 obj->address = (0x0000 | (pin-600));
group-onsemi 0:098463de4c5d 70
group-onsemi 0:098463de4c5d 71 SPIName adc_mosi = (SPIName)pinmap_peripheral(ADC_MOSI, PinMap_SPI_MOSI);
group-onsemi 0:098463de4c5d 72 SPIName adc_miso = (SPIName)pinmap_peripheral(ADC_MISO, PinMap_SPI_MISO);
group-onsemi 0:098463de4c5d 73 SPIName adc_sclk = (SPIName)pinmap_peripheral(ADC_SCLK, PinMap_SPI_SCLK);
group-onsemi 0:098463de4c5d 74 SPIName adc_ssel = (SPIName)pinmap_peripheral(ADC_SSEL, PinMap_SPI_SSEL);
group-onsemi 0:098463de4c5d 75 SPIName adc_data = (SPIName)pinmap_merge(adc_mosi, adc_miso);
group-onsemi 0:098463de4c5d 76 SPIName adc_cntl = (SPIName)pinmap_merge(adc_sclk, adc_ssel);
group-onsemi 0:098463de4c5d 77 obj->adc_spi = (MPS2_SSP_TypeDef*)pinmap_merge(adc_data, adc_cntl);
group-onsemi 0:098463de4c5d 78
group-onsemi 0:098463de4c5d 79 if(analog_spi_inited == 0){
group-onsemi 0:098463de4c5d 80 obj->adc_spi->CR1 = 0;
group-onsemi 0:098463de4c5d 81 obj->adc_spi->CR0 = SSP_CR0_SCR_DFLT | SSP_CR0_FRF_MOT | SSP_CR0_DSS_16;
group-onsemi 0:098463de4c5d 82 obj->adc_spi->CPSR = SSP_CPSR_DFLT;
group-onsemi 0:098463de4c5d 83 obj->adc_spi->IMSC = 0x8;
group-onsemi 0:098463de4c5d 84 obj->adc_spi->DMACR = 0;
group-onsemi 0:098463de4c5d 85 obj->adc_spi->CR1 = SSP_CR1_SSE_Msk;
group-onsemi 0:098463de4c5d 86 obj->adc_spi->ICR = 0x3;
group-onsemi 0:098463de4c5d 87 analog_spi_inited = 1;
group-onsemi 0:098463de4c5d 88 }
group-onsemi 0:098463de4c5d 89
group-onsemi 0:098463de4c5d 90 pinmap_pinout(ADC_MOSI, PinMap_SPI_MOSI);
group-onsemi 0:098463de4c5d 91 pinmap_pinout(ADC_MISO, PinMap_SPI_MISO);
group-onsemi 0:098463de4c5d 92 pinmap_pinout(ADC_SCLK, PinMap_SPI_SCLK);
group-onsemi 0:098463de4c5d 93 pinmap_pinout(ADC_SSEL, PinMap_SPI_SSEL);
group-onsemi 0:098463de4c5d 94 pinmap_pinout(pin, PinMap_ADC);
group-onsemi 0:098463de4c5d 95 }
group-onsemi 0:098463de4c5d 96
group-onsemi 0:098463de4c5d 97 static inline uint32_t adc_read(analogin_t *obj) {
group-onsemi 0:098463de4c5d 98 return 0;
group-onsemi 0:098463de4c5d 99 }
group-onsemi 0:098463de4c5d 100
group-onsemi 0:098463de4c5d 101
group-onsemi 0:098463de4c5d 102 float analogin_read(analogin_t *obj) {
group-onsemi 0:098463de4c5d 103 uint32_t value = adc_read(obj);
group-onsemi 0:098463de4c5d 104 return 0;
group-onsemi 0:098463de4c5d 105 }
group-onsemi 0:098463de4c5d 106
group-onsemi 0:098463de4c5d 107 uint16_t analogin_read_u16(analogin_t *obj) {
group-onsemi 0:098463de4c5d 108 return 0;
group-onsemi 0:098463de4c5d 109 }
group-onsemi 0:098463de4c5d 110