MacroRat / MouseCode

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Dependencies:   ITG3200 QEI

mbed-dev/targets/TARGET_WIZNET/TARGET_W7500x/analogin_api.c@46:b156ef445742, 2017-06-03 (annotated)

Committer:
sahilmgandhi
Date:
Sat Jun 03 00:22:44 2017 +0000
Revision:
46:b156ef445742
Parent:
18:6a4db94011d3 
Final code for internal battlebot competition.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sahilmgandhi 18:6a4db94011d3 1 /* mbed Microcontroller Library
sahilmgandhi 18:6a4db94011d3 2 *******************************************************************************
sahilmgandhi 18:6a4db94011d3 3 * Copyright (c) 2015 WIZnet Co.,Ltd. All rights reserved.
sahilmgandhi 18:6a4db94011d3 4 * All rights reserved.
sahilmgandhi 18:6a4db94011d3 5 *
sahilmgandhi 18:6a4db94011d3 6 * Redistribution and use in source and binary forms, with or without
sahilmgandhi 18:6a4db94011d3 7 * modification, are permitted provided that the following conditions are met:
sahilmgandhi 18:6a4db94011d3 8 *
sahilmgandhi 18:6a4db94011d3 9 * 1. Redistributions of source code must retain the above copyright notice,
sahilmgandhi 18:6a4db94011d3 10 * this list of conditions and the following disclaimer.
sahilmgandhi 18:6a4db94011d3 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
sahilmgandhi 18:6a4db94011d3 12 * this list of conditions and the following disclaimer in the documentation
sahilmgandhi 18:6a4db94011d3 13 * and/or other materials provided with the distribution.
sahilmgandhi 18:6a4db94011d3 14 * 3. Neither the name of ARM Limited nor the names of its contributors
sahilmgandhi 18:6a4db94011d3 15 * may be used to endorse or promote products derived from this software
sahilmgandhi 18:6a4db94011d3 16 * without specific prior written permission.
sahilmgandhi 18:6a4db94011d3 17 *
sahilmgandhi 18:6a4db94011d3 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
sahilmgandhi 18:6a4db94011d3 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sahilmgandhi 18:6a4db94011d3 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
sahilmgandhi 18:6a4db94011d3 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
sahilmgandhi 18:6a4db94011d3 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sahilmgandhi 18:6a4db94011d3 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
sahilmgandhi 18:6a4db94011d3 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
sahilmgandhi 18:6a4db94011d3 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
sahilmgandhi 18:6a4db94011d3 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
sahilmgandhi 18:6a4db94011d3 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
sahilmgandhi 18:6a4db94011d3 28 *******************************************************************************
sahilmgandhi 18:6a4db94011d3 29 */
sahilmgandhi 18:6a4db94011d3 30
sahilmgandhi 18:6a4db94011d3 31 #include "mbed_assert.h"
sahilmgandhi 18:6a4db94011d3 32 #include "analogin_api.h"
sahilmgandhi 18:6a4db94011d3 33
sahilmgandhi 18:6a4db94011d3 34 #if DEVICE_ANALOGIN
sahilmgandhi 18:6a4db94011d3 35
sahilmgandhi 18:6a4db94011d3 36 #include "mbed_wait_api.h"
sahilmgandhi 18:6a4db94011d3 37 #include "cmsis.h"
sahilmgandhi 18:6a4db94011d3 38 #include "pinmap.h"
sahilmgandhi 18:6a4db94011d3 39 #include "W7500x_adc.h"
sahilmgandhi 18:6a4db94011d3 40 #include "PeripheralPins.h"
sahilmgandhi 18:6a4db94011d3 41
sahilmgandhi 18:6a4db94011d3 42
sahilmgandhi 18:6a4db94011d3 43 ADC_TypeDef * AdcHandle;
sahilmgandhi 18:6a4db94011d3 44
sahilmgandhi 18:6a4db94011d3 45 static int adc_inited = 0;
sahilmgandhi 18:6a4db94011d3 46
sahilmgandhi 18:6a4db94011d3 47 void analogin_init(analogin_t *obj, PinName pin)
sahilmgandhi 18:6a4db94011d3 48 {
sahilmgandhi 18:6a4db94011d3 49 // Get the peripheral name from the pin and assign it to the object
sahilmgandhi 18:6a4db94011d3 50 obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
sahilmgandhi 18:6a4db94011d3 51
sahilmgandhi 18:6a4db94011d3 52 MBED_ASSERT(obj->adc != (ADCName)NC);
sahilmgandhi 18:6a4db94011d3 53
sahilmgandhi 18:6a4db94011d3 54 // Configure GPIO
sahilmgandhi 18:6a4db94011d3 55 pinmap_pinout(pin, PinMap_ADC);
sahilmgandhi 18:6a4db94011d3 56
sahilmgandhi 18:6a4db94011d3 57 // Save pin number for the read function
sahilmgandhi 18:6a4db94011d3 58 obj->pin = pin;
sahilmgandhi 18:6a4db94011d3 59
sahilmgandhi 18:6a4db94011d3 60 // The ADC initialization is done once
sahilmgandhi 18:6a4db94011d3 61 if (adc_inited == 0) {
sahilmgandhi 18:6a4db94011d3 62 adc_inited = 1;
sahilmgandhi 18:6a4db94011d3 63
sahilmgandhi 18:6a4db94011d3 64 ADC_Init();
sahilmgandhi 18:6a4db94011d3 65 }
sahilmgandhi 18:6a4db94011d3 66 }
sahilmgandhi 18:6a4db94011d3 67
sahilmgandhi 18:6a4db94011d3 68 static inline uint16_t adc_read(analogin_t *obj)
sahilmgandhi 18:6a4db94011d3 69 {
sahilmgandhi 18:6a4db94011d3 70 ADC_CH adc_ch;
sahilmgandhi 18:6a4db94011d3 71
sahilmgandhi 18:6a4db94011d3 72 switch (obj->pin) {
sahilmgandhi 18:6a4db94011d3 73 case PC_15:
sahilmgandhi 18:6a4db94011d3 74 adc_ch = ADC_CH0;
sahilmgandhi 18:6a4db94011d3 75 break;
sahilmgandhi 18:6a4db94011d3 76 case PC_14:
sahilmgandhi 18:6a4db94011d3 77 adc_ch = ADC_CH1;
sahilmgandhi 18:6a4db94011d3 78 break;
sahilmgandhi 18:6a4db94011d3 79 case PC_13:
sahilmgandhi 18:6a4db94011d3 80 adc_ch = ADC_CH2;
sahilmgandhi 18:6a4db94011d3 81 break;
sahilmgandhi 18:6a4db94011d3 82 case PC_12:
sahilmgandhi 18:6a4db94011d3 83 adc_ch = ADC_CH3;
sahilmgandhi 18:6a4db94011d3 84 break;
sahilmgandhi 18:6a4db94011d3 85 case PC_11:
sahilmgandhi 18:6a4db94011d3 86 adc_ch = ADC_CH4;
sahilmgandhi 18:6a4db94011d3 87 break;
sahilmgandhi 18:6a4db94011d3 88 case PC_10:
sahilmgandhi 18:6a4db94011d3 89 adc_ch = ADC_CH5;
sahilmgandhi 18:6a4db94011d3 90 break;
sahilmgandhi 18:6a4db94011d3 91 default:
sahilmgandhi 18:6a4db94011d3 92 return 0;
sahilmgandhi 18:6a4db94011d3 93 }
sahilmgandhi 18:6a4db94011d3 94
sahilmgandhi 18:6a4db94011d3 95 ADC_ChannelSelect(adc_ch);
sahilmgandhi 18:6a4db94011d3 96 ADC_Start();
sahilmgandhi 18:6a4db94011d3 97
sahilmgandhi 18:6a4db94011d3 98 // Wait end of conversion and get value
sahilmgandhi 18:6a4db94011d3 99 while(ADC_IsInterrupt());
sahilmgandhi 18:6a4db94011d3 100 return ADC_ReadData();
sahilmgandhi 18:6a4db94011d3 101 }
sahilmgandhi 18:6a4db94011d3 102
sahilmgandhi 18:6a4db94011d3 103 uint16_t analogin_read_u16(analogin_t *obj)
sahilmgandhi 18:6a4db94011d3 104 {
sahilmgandhi 18:6a4db94011d3 105 uint16_t value = adc_read(obj);
sahilmgandhi 18:6a4db94011d3 106 // 12-bit to 16-bit conversion
sahilmgandhi 18:6a4db94011d3 107 return value;
sahilmgandhi 18:6a4db94011d3 108 }
sahilmgandhi 18:6a4db94011d3 109
sahilmgandhi 18:6a4db94011d3 110 float analogin_read(analogin_t *obj)
sahilmgandhi 18:6a4db94011d3 111 {
sahilmgandhi 18:6a4db94011d3 112 uint16_t value = adc_read(obj);
sahilmgandhi 18:6a4db94011d3 113
sahilmgandhi 18:6a4db94011d3 114 return (float)value * (1.0f / (float)0xFFF); // 12 bits range
sahilmgandhi 18:6a4db94011d3 115 }
sahilmgandhi 18:6a4db94011d3 116
sahilmgandhi 18:6a4db94011d3 117 #endif