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mbed library sources

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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_STM/TARGET_NUCLEO_L152RE/analogout_api.c@268:402bcc0c870b, 2014-07-29 (annotated)

Committer:
mbed_official
Date:
Tue Jul 29 19:00:07 2014 +0100
Revision:
268:402bcc0c870b
Parent:
227:7bd0639b8911
Child:
354:e67efb2aab0e
Synchronized with git revision 490d1a6606b3138f165c5edf2f2370ca616587c0



Full URL: https://github.com/mbedmicro/mbed/commit/490d1a6606b3138f165c5edf2f2370ca616587c0/



[LPC1114] Sleep fix + some device.h settings

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 76:aeb1df146756 1 /* mbed Microcontroller Library
mbed_official 76:aeb1df146756 2 * Copyright (c) 2014, STMicroelectronics
mbed_official 76:aeb1df146756 3 * All rights reserved.
mbed_official 76:aeb1df146756 4 *
mbed_official 76:aeb1df146756 5 * Redistribution and use in source and binary forms, with or without
mbed_official 76:aeb1df146756 6 * modification, are permitted provided that the following conditions are met:
mbed_official 76:aeb1df146756 7 *
mbed_official 76:aeb1df146756 8 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 76:aeb1df146756 9 * this list of conditions and the following disclaimer.
mbed_official 76:aeb1df146756 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 76:aeb1df146756 11 * this list of conditions and the following disclaimer in the documentation
mbed_official 76:aeb1df146756 12 * and/or other materials provided with the distribution.
mbed_official 76:aeb1df146756 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 76:aeb1df146756 14 * may be used to endorse or promote products derived from this software
mbed_official 76:aeb1df146756 15 * without specific prior written permission.
mbed_official 76:aeb1df146756 16 *
mbed_official 76:aeb1df146756 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 76:aeb1df146756 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 76:aeb1df146756 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 76:aeb1df146756 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 76:aeb1df146756 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 76:aeb1df146756 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 76:aeb1df146756 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 76:aeb1df146756 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 76:aeb1df146756 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 76:aeb1df146756 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 76:aeb1df146756 27 */
mbed_official 227:7bd0639b8911 28 #include "mbed_assert.h"
mbed_official 76:aeb1df146756 29 #include "analogout_api.h"
mbed_official 76:aeb1df146756 30
mbed_official 76:aeb1df146756 31 #if DEVICE_ANALOGOUT
mbed_official 76:aeb1df146756 32
mbed_official 76:aeb1df146756 33 #include "cmsis.h"
mbed_official 76:aeb1df146756 34 #include "pinmap.h"
mbed_official 76:aeb1df146756 35
mbed_official 76:aeb1df146756 36 #define RANGE_12BIT (0xFFF)
mbed_official 76:aeb1df146756 37
mbed_official 76:aeb1df146756 38 static const PinMap PinMap_DAC[] = {
mbed_official 76:aeb1df146756 39 {PA_4, DAC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // DAC_OUT1
mbed_official 129:0182c99221bc 40 {PA_5, DAC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // DAC_OUT2
mbed_official 76:aeb1df146756 41 {NC, NC, 0}
mbed_official 76:aeb1df146756 42 };
mbed_official 76:aeb1df146756 43
mbed_official 76:aeb1df146756 44 void analogout_init(dac_t *obj, PinName pin) {
mbed_official 76:aeb1df146756 45 DAC_InitTypeDef DAC_InitStructure;
mbed_official 174:8bb9f3a33240 46
mbed_official 76:aeb1df146756 47 // Get the peripheral name (DAC_1, ...) from the pin and assign it to the object
mbed_official 76:aeb1df146756 48 obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC);
mbed_official 227:7bd0639b8911 49 MBED_ASSERT(obj->dac != (DACName)NC);
mbed_official 76:aeb1df146756 50
mbed_official 76:aeb1df146756 51 // Configure GPIO
mbed_official 76:aeb1df146756 52 pinmap_pinout(pin, PinMap_DAC);
mbed_official 76:aeb1df146756 53
mbed_official 215:83cf97a28428 54 // Save the pin for future use
mbed_official 215:83cf97a28428 55 obj->pin = pin;
mbed_official 76:aeb1df146756 56
mbed_official 76:aeb1df146756 57 // Enable DAC clock
mbed_official 76:aeb1df146756 58 RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);
mbed_official 76:aeb1df146756 59
mbed_official 76:aeb1df146756 60 // Configure and enable DAC channel
mbed_official 129:0182c99221bc 61 DAC_InitStructure.DAC_Trigger = DAC_Trigger_None;
mbed_official 129:0182c99221bc 62 DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None;
mbed_official 95:7f2fbdc5e413 63 DAC_InitStructure.DAC_LFSRUnmask_TriangleAmplitude = DAC_LFSRUnmask_Bit0;
mbed_official 129:0182c99221bc 64 DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Disable;
mbed_official 174:8bb9f3a33240 65
mbed_official 215:83cf97a28428 66 if (obj->pin == PA_4) {
mbed_official 129:0182c99221bc 67 DAC_Init(DAC_Channel_1, &DAC_InitStructure);
mbed_official 129:0182c99221bc 68 DAC_Cmd(DAC_Channel_1, ENABLE);
mbed_official 76:aeb1df146756 69 }
mbed_official 215:83cf97a28428 70 if (obj->pin == PA_5) {
mbed_official 129:0182c99221bc 71 DAC_Init(DAC_Channel_2, &DAC_InitStructure);
mbed_official 129:0182c99221bc 72 DAC_Cmd(DAC_Channel_2, ENABLE);
mbed_official 129:0182c99221bc 73 }
mbed_official 174:8bb9f3a33240 74
mbed_official 76:aeb1df146756 75 analogout_write_u16(obj, 0);
mbed_official 76:aeb1df146756 76 }
mbed_official 76:aeb1df146756 77
mbed_official 76:aeb1df146756 78 void analogout_free(dac_t *obj) {
mbed_official 215:83cf97a28428 79 // Configure GPIOs
mbed_official 215:83cf97a28428 80 pin_function(obj->pin, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 76:aeb1df146756 81 }
mbed_official 76:aeb1df146756 82
mbed_official 76:aeb1df146756 83 static inline void dac_write(dac_t *obj, uint16_t value) {
mbed_official 215:83cf97a28428 84 if (obj->pin == PA_4) {
mbed_official 129:0182c99221bc 85 DAC_SetChannel1Data(DAC_Align_12b_R, value);
mbed_official 76:aeb1df146756 86 }
mbed_official 215:83cf97a28428 87 if (obj->pin == PA_5) {
mbed_official 129:0182c99221bc 88 DAC_SetChannel2Data(DAC_Align_12b_R, value);
mbed_official 129:0182c99221bc 89 }
mbed_official 76:aeb1df146756 90 }
mbed_official 76:aeb1df146756 91
mbed_official 76:aeb1df146756 92 static inline int dac_read(dac_t *obj) {
mbed_official 215:83cf97a28428 93 if (obj->pin == PA_4) {
mbed_official 129:0182c99221bc 94 return (int)DAC_GetDataOutputValue(DAC_Channel_1);
mbed_official 76:aeb1df146756 95 }
mbed_official 215:83cf97a28428 96 if (obj->pin == PA_5) {
mbed_official 129:0182c99221bc 97 return (int)DAC_GetDataOutputValue(DAC_Channel_2);
mbed_official 129:0182c99221bc 98 }
mbed_official 94:6519f69185ce 99 return 0;
mbed_official 76:aeb1df146756 100 }
mbed_official 76:aeb1df146756 101
mbed_official 76:aeb1df146756 102 void analogout_write(dac_t *obj, float value) {
mbed_official 76:aeb1df146756 103 if (value < 0.0f) {
mbed_official 76:aeb1df146756 104 dac_write(obj, 0); // Min value
mbed_official 76:aeb1df146756 105 } else if (value > 1.0f) {
mbed_official 76:aeb1df146756 106 dac_write(obj, (uint16_t)RANGE_12BIT); // Max value
mbed_official 76:aeb1df146756 107 } else {
mbed_official 76:aeb1df146756 108 dac_write(obj, (uint16_t)(value * (float)RANGE_12BIT));
mbed_official 76:aeb1df146756 109 }
mbed_official 76:aeb1df146756 110 }
mbed_official 76:aeb1df146756 111
mbed_official 76:aeb1df146756 112 void analogout_write_u16(dac_t *obj, uint16_t value) {
mbed_official 76:aeb1df146756 113 if (value > (uint16_t)RANGE_12BIT) {
mbed_official 174:8bb9f3a33240 114 dac_write(obj, (uint16_t)RANGE_12BIT); // Max value
mbed_official 174:8bb9f3a33240 115 } else {
mbed_official 174:8bb9f3a33240 116 dac_write(obj, value);
mbed_official 76:aeb1df146756 117 }
mbed_official 76:aeb1df146756 118 }
mbed_official 76:aeb1df146756 119
mbed_official 76:aeb1df146756 120 float analogout_read(dac_t *obj) {
mbed_official 76:aeb1df146756 121 uint32_t value = dac_read(obj);
mbed_official 76:aeb1df146756 122 return (float)value * (1.0f / (float)RANGE_12BIT);
mbed_official 76:aeb1df146756 123 }
mbed_official 76:aeb1df146756 124
mbed_official 76:aeb1df146756 125 uint16_t analogout_read_u16(dac_t *obj) {
mbed_official 76:aeb1df146756 126 return (uint16_t)dac_read(obj);
mbed_official 76:aeb1df146756 127 }
mbed_official 76:aeb1df146756 128
mbed_official 76:aeb1df146756 129 #endif // DEVICE_ANALOGOUT