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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_WIZNET/TARGET_W7500x/analogin_api.c@558:0880f51c4036, 2015-06-03 (annotated)

Committer:
mbed_official
Date:
Wed Jun 03 09:00:09 2015 +0100
Revision:
558:0880f51c4036
Child:
619:034e698bc035
Synchronized with git revision 927c31ab8457cfef0ee8a8316117b7a41fd79133



Full URL: https://github.com/mbedmicro/mbed/commit/927c31ab8457cfef0ee8a8316117b7a41fd79133/



Add WIZwiki-W7500

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 558:0880f51c4036 39 #include "PeripheralPins.h"
mbed_official 558:0880f51c4036 40
mbed_official 558:0880f51c4036 41
mbed_official 558:0880f51c4036 42 ADC_TypeDef * AdcHandle;
mbed_official 558:0880f51c4036 43
mbed_official 558:0880f51c4036 44 static int adc_inited = 0;
mbed_official 558:0880f51c4036 45
mbed_official 558:0880f51c4036 46 void analogin_init(analogin_t *obj, PinName pin)
mbed_official 558:0880f51c4036 47 {
mbed_official 558:0880f51c4036 48 // Get the peripheral name from the pin and assign it to the object
mbed_official 558:0880f51c4036 49 obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
mbed_official 558:0880f51c4036 50
mbed_official 558:0880f51c4036 51 MBED_ASSERT(obj->adc != (ADCName)NC);
mbed_official 558:0880f51c4036 52
mbed_official 558:0880f51c4036 53 // Configure GPIO
mbed_official 558:0880f51c4036 54 pinmap_pinout(pin, PinMap_ADC);
mbed_official 558:0880f51c4036 55
mbed_official 558:0880f51c4036 56 // Save pin number for the read function
mbed_official 558:0880f51c4036 57 obj->pin = pin;
mbed_official 558:0880f51c4036 58
mbed_official 558:0880f51c4036 59 // The ADC initialization is done once
mbed_official 558:0880f51c4036 60 if (adc_inited == 0) {
mbed_official 558:0880f51c4036 61 adc_inited = 1;
mbed_official 558:0880f51c4036 62
mbed_official 558:0880f51c4036 63 ADC_Init();
mbed_official 558:0880f51c4036 64 }
mbed_official 558:0880f51c4036 65 }
mbed_official 558:0880f51c4036 66
mbed_official 558:0880f51c4036 67 static inline uint16_t adc_read(analogin_t *obj)
mbed_official 558:0880f51c4036 68 {
mbed_official 558:0880f51c4036 69 ADC_CH adc_ch;
mbed_official 558:0880f51c4036 70
mbed_official 558:0880f51c4036 71 switch (obj->pin) {
mbed_official 558:0880f51c4036 72 case PC_15:
mbed_official 558:0880f51c4036 73 adc_ch = ADC_CH0;
mbed_official 558:0880f51c4036 74 break;
mbed_official 558:0880f51c4036 75 case PC_14:
mbed_official 558:0880f51c4036 76 adc_ch = ADC_CH1;
mbed_official 558:0880f51c4036 77 break;
mbed_official 558:0880f51c4036 78 case PC_13:
mbed_official 558:0880f51c4036 79 adc_ch = ADC_CH2;
mbed_official 558:0880f51c4036 80 break;
mbed_official 558:0880f51c4036 81 case PC_12:
mbed_official 558:0880f51c4036 82 adc_ch = ADC_CH3;
mbed_official 558:0880f51c4036 83 break;
mbed_official 558:0880f51c4036 84 case PC_11:
mbed_official 558:0880f51c4036 85 adc_ch = ADC_CH4;
mbed_official 558:0880f51c4036 86 break;
mbed_official 558:0880f51c4036 87 case PC_10:
mbed_official 558:0880f51c4036 88 adc_ch = ADC_CH5;
mbed_official 558:0880f51c4036 89 break;
mbed_official 558:0880f51c4036 90 default:
mbed_official 558:0880f51c4036 91 return 0;
mbed_official 558:0880f51c4036 92 }
mbed_official 558:0880f51c4036 93
mbed_official 558:0880f51c4036 94 ADC_ChannelSelect(adc_ch);
mbed_official 558:0880f51c4036 95 ADC_Start();
mbed_official 558:0880f51c4036 96
mbed_official 558:0880f51c4036 97 // Wait end of conversion and get value
mbed_official 558:0880f51c4036 98 while(ADC_IsInterrupt());
mbed_official 558:0880f51c4036 99 return ADC_ReadData();
mbed_official 558:0880f51c4036 100 }
mbed_official 558:0880f51c4036 101
mbed_official 558:0880f51c4036 102 uint16_t analogin_read_u16(analogin_t *obj)
mbed_official 558:0880f51c4036 103 {
mbed_official 558:0880f51c4036 104 uint16_t value = adc_read(obj);
mbed_official 558:0880f51c4036 105 // 12-bit to 16-bit conversion
mbed_official 558:0880f51c4036 106 return value;
mbed_official 558:0880f51c4036 107 }
mbed_official 558:0880f51c4036 108
mbed_official 558:0880f51c4036 109 float analogin_read(analogin_t *obj)
mbed_official 558:0880f51c4036 110 {
mbed_official 558:0880f51c4036 111 uint16_t value = adc_read(obj);
mbed_official 558:0880f51c4036 112
mbed_official 558:0880f51c4036 113 return (float)value * (1.0f / (float)0xFFF); // 12 bits range
mbed_official 558:0880f51c4036 114 }
mbed_official 558:0880f51c4036 115
mbed_official 558:0880f51c4036 116 #endif