Paul Paterson / mbed-src-CanNucleoF0

mbed library sources, include can_api for nucleo-f091rc

Dependents:   CanNucleoF0_example

Fork of mbed-src by mbed official

targets/hal/TARGET_WIZNET/TARGET_W7500x/analogin_api.c@645:13c87cbecd54, 2016-01-07 (annotated)

Committer:
ptpaterson
Date:
Thu Jan 07 05:49:05 2016 +0000
Revision:
645:13c87cbecd54
Parent:
619:034e698bc035 
corrected freeze on CAN_RECEIVE_IT

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 558:0880f51c4036 1 /* mbed Microcontroller Library
mbed_official 558:0880f51c4036 2 *******************************************************************************
mbed_official 558:0880f51c4036 3 * Copyright (c) 2015 WIZnet Co.,Ltd. All rights reserved.
mbed_official 558:0880f51c4036 4 * All rights reserved.
mbed_official 558:0880f51c4036 5 *
mbed_official 558:0880f51c4036 6 * Redistribution and use in source and binary forms, with or without
mbed_official 558:0880f51c4036 7 * modification, are permitted provided that the following conditions are met:
mbed_official 558:0880f51c4036 8 *
mbed_official 558:0880f51c4036 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 558:0880f51c4036 10 * this list of conditions and the following disclaimer.
mbed_official 558:0880f51c4036 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 558:0880f51c4036 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 558:0880f51c4036 13 * and/or other materials provided with the distribution.
mbed_official 558:0880f51c4036 14 * 3. Neither the name of ARM Limited nor the names of its contributors
mbed_official 558:0880f51c4036 15 * may be used to endorse or promote products derived from this software
mbed_official 558:0880f51c4036 16 * without specific prior written permission.
mbed_official 558:0880f51c4036 17 *
mbed_official 558:0880f51c4036 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 558:0880f51c4036 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 558:0880f51c4036 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 558:0880f51c4036 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 558:0880f51c4036 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 558:0880f51c4036 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 558:0880f51c4036 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 558:0880f51c4036 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 558:0880f51c4036 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 558:0880f51c4036 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 558:0880f51c4036 28 *******************************************************************************
mbed_official 558:0880f51c4036 29 */
mbed_official 558:0880f51c4036 30
mbed_official 558:0880f51c4036 31 #include "mbed_assert.h"
mbed_official 558:0880f51c4036 32 #include "analogin_api.h"
mbed_official 558:0880f51c4036 33
mbed_official 558:0880f51c4036 34 #if DEVICE_ANALOGIN
mbed_official 558:0880f51c4036 35
mbed_official 558:0880f51c4036 36 #include "wait_api.h"
mbed_official 558:0880f51c4036 37 #include "cmsis.h"
mbed_official 558:0880f51c4036 38 #include "pinmap.h"
mbed_official 619:034e698bc035 39 #include "W7500x_adc.h"
mbed_official 558:0880f51c4036 40 #include "PeripheralPins.h"
mbed_official 558:0880f51c4036 41
mbed_official 558:0880f51c4036 42
mbed_official 558:0880f51c4036 43 ADC_TypeDef * AdcHandle;
mbed_official 558:0880f51c4036 44
mbed_official 558:0880f51c4036 45 static int adc_inited = 0;
mbed_official 558:0880f51c4036 46
mbed_official 558:0880f51c4036 47 void analogin_init(analogin_t *obj, PinName pin)
mbed_official 558:0880f51c4036 48 {
mbed_official 558:0880f51c4036 49 // Get the peripheral name from the pin and assign it to the object
mbed_official 558:0880f51c4036 50 obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
mbed_official 558:0880f51c4036 51
mbed_official 558:0880f51c4036 52 MBED_ASSERT(obj->adc != (ADCName)NC);
mbed_official 558:0880f51c4036 53
mbed_official 558:0880f51c4036 54 // Configure GPIO
mbed_official 558:0880f51c4036 55 pinmap_pinout(pin, PinMap_ADC);
mbed_official 558:0880f51c4036 56
mbed_official 558:0880f51c4036 57 // Save pin number for the read function
mbed_official 558:0880f51c4036 58 obj->pin = pin;
mbed_official 558:0880f51c4036 59
mbed_official 558:0880f51c4036 60 // The ADC initialization is done once
mbed_official 558:0880f51c4036 61 if (adc_inited == 0) {
mbed_official 558:0880f51c4036 62 adc_inited = 1;
mbed_official 558:0880f51c4036 63
mbed_official 558:0880f51c4036 64 ADC_Init();
mbed_official 558:0880f51c4036 65 }
mbed_official 558:0880f51c4036 66 }
mbed_official 558:0880f51c4036 67
mbed_official 558:0880f51c4036 68 static inline uint16_t adc_read(analogin_t *obj)
mbed_official 558:0880f51c4036 69 {
mbed_official 558:0880f51c4036 70 ADC_CH adc_ch;
mbed_official 558:0880f51c4036 71
mbed_official 558:0880f51c4036 72 switch (obj->pin) {
mbed_official 558:0880f51c4036 73 case PC_15:
mbed_official 558:0880f51c4036 74 adc_ch = ADC_CH0;
mbed_official 558:0880f51c4036 75 break;
mbed_official 558:0880f51c4036 76 case PC_14:
mbed_official 558:0880f51c4036 77 adc_ch = ADC_CH1;
mbed_official 558:0880f51c4036 78 break;
mbed_official 558:0880f51c4036 79 case PC_13:
mbed_official 558:0880f51c4036 80 adc_ch = ADC_CH2;
mbed_official 558:0880f51c4036 81 break;
mbed_official 558:0880f51c4036 82 case PC_12:
mbed_official 558:0880f51c4036 83 adc_ch = ADC_CH3;
mbed_official 558:0880f51c4036 84 break;
mbed_official 558:0880f51c4036 85 case PC_11:
mbed_official 558:0880f51c4036 86 adc_ch = ADC_CH4;
mbed_official 558:0880f51c4036 87 break;
mbed_official 558:0880f51c4036 88 case PC_10:
mbed_official 558:0880f51c4036 89 adc_ch = ADC_CH5;
mbed_official 558:0880f51c4036 90 break;
mbed_official 558:0880f51c4036 91 default:
mbed_official 558:0880f51c4036 92 return 0;
mbed_official 558:0880f51c4036 93 }
mbed_official 558:0880f51c4036 94
mbed_official 558:0880f51c4036 95 ADC_ChannelSelect(adc_ch);
mbed_official 558:0880f51c4036 96 ADC_Start();
mbed_official 558:0880f51c4036 97
mbed_official 558:0880f51c4036 98 // Wait end of conversion and get value
mbed_official 558:0880f51c4036 99 while(ADC_IsInterrupt());
mbed_official 558:0880f51c4036 100 return ADC_ReadData();
mbed_official 558:0880f51c4036 101 }
mbed_official 558:0880f51c4036 102
mbed_official 558:0880f51c4036 103 uint16_t analogin_read_u16(analogin_t *obj)
mbed_official 558:0880f51c4036 104 {
mbed_official 558:0880f51c4036 105 uint16_t value = adc_read(obj);
mbed_official 558:0880f51c4036 106 // 12-bit to 16-bit conversion
mbed_official 558:0880f51c4036 107 return value;
mbed_official 558:0880f51c4036 108 }
mbed_official 558:0880f51c4036 109
mbed_official 558:0880f51c4036 110 float analogin_read(analogin_t *obj)
mbed_official 558:0880f51c4036 111 {
mbed_official 558:0880f51c4036 112 uint16_t value = adc_read(obj);
mbed_official 558:0880f51c4036 113
mbed_official 558:0880f51c4036 114 return (float)value * (1.0f / (float)0xFFF); // 12 bits range
mbed_official 558:0880f51c4036 115 }
mbed_official 558:0880f51c4036 116
mbed_official 558:0880f51c4036 117 #endif