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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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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_F072RB/analogout_api.c@440:8a0b45cd594f, 2014-12-16 (annotated)

Committer:
mbed_official
Date:
Tue Dec 16 08:15:08 2014 +0000
Revision:
440:8a0b45cd594f
Parent:
414:4ec4c5b614b0 
Synchronized with git revision 67fbbf0b635d0c0d93fbe433306c537c2ad206aa



Full URL: https://github.com/mbedmicro/mbed/commit/67fbbf0b635d0c0d93fbe433306c537c2ad206aa/



Targets: nrf51 - updating app_timer.c from Norid'c SDKv7.1.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 219:993c9b0acbcc 1 /* mbed Microcontroller Library
mbed_official 219:993c9b0acbcc 2 * Copyright (c) 2014, STMicroelectronics
mbed_official 219:993c9b0acbcc 3 * All rights reserved.
mbed_official 219:993c9b0acbcc 4 *
mbed_official 219:993c9b0acbcc 5 * Redistribution and use in source and binary forms, with or without
mbed_official 219:993c9b0acbcc 6 * modification, are permitted provided that the following conditions are met:
mbed_official 219:993c9b0acbcc 7 *
mbed_official 219:993c9b0acbcc 8 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 219:993c9b0acbcc 9 * this list of conditions and the following disclaimer.
mbed_official 219:993c9b0acbcc 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 219:993c9b0acbcc 11 * this list of conditions and the following disclaimer in the documentation
mbed_official 219:993c9b0acbcc 12 * and/or other materials provided with the distribution.
mbed_official 219:993c9b0acbcc 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 219:993c9b0acbcc 14 * may be used to endorse or promote products derived from this software
mbed_official 219:993c9b0acbcc 15 * without specific prior written permission.
mbed_official 219:993c9b0acbcc 16 *
mbed_official 219:993c9b0acbcc 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 219:993c9b0acbcc 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 219:993c9b0acbcc 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 219:993c9b0acbcc 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 219:993c9b0acbcc 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 219:993c9b0acbcc 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 219:993c9b0acbcc 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 219:993c9b0acbcc 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 219:993c9b0acbcc 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 219:993c9b0acbcc 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 219:993c9b0acbcc 27 */
mbed_official 239:8cadf13dff33 28 #include "mbed_assert.h"
mbed_official 219:993c9b0acbcc 29 #include "analogout_api.h"
mbed_official 219:993c9b0acbcc 30
mbed_official 219:993c9b0acbcc 31 #if DEVICE_ANALOGOUT
mbed_official 219:993c9b0acbcc 32
mbed_official 219:993c9b0acbcc 33 #include "cmsis.h"
mbed_official 219:993c9b0acbcc 34 #include "pinmap.h"
mbed_official 285:31249416b6f9 35 #include "mbed_error.h"
mbed_official 414:4ec4c5b614b0 36 #include "PeripheralPins.h"
mbed_official 219:993c9b0acbcc 37
mbed_official 219:993c9b0acbcc 38 #define DAC_RANGE (0xFFF) // 12 bits
mbed_official 219:993c9b0acbcc 39
mbed_official 219:993c9b0acbcc 40 static DAC_HandleTypeDef DacHandle;
mbed_official 219:993c9b0acbcc 41
mbed_official 402:09075a3b15e3 42 void analogout_init(dac_t *obj, PinName pin)
mbed_official 402:09075a3b15e3 43 {
mbed_official 219:993c9b0acbcc 44 DAC_ChannelConfTypeDef sConfig;
mbed_official 219:993c9b0acbcc 45
mbed_official 219:993c9b0acbcc 46 DacHandle.Instance = DAC;
mbed_official 219:993c9b0acbcc 47
mbed_official 219:993c9b0acbcc 48 // Get the peripheral name (DAC_1, ...) from the pin and assign it to the object
mbed_official 219:993c9b0acbcc 49 obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC);
mbed_official 239:8cadf13dff33 50 MBED_ASSERT(obj->dac != (DACName)NC);
mbed_official 219:993c9b0acbcc 51
mbed_official 219:993c9b0acbcc 52 // Configure GPIO
mbed_official 219:993c9b0acbcc 53 pinmap_pinout(pin, PinMap_DAC);
mbed_official 219:993c9b0acbcc 54
mbed_official 219:993c9b0acbcc 55 // Save the channel for future use
mbed_official 219:993c9b0acbcc 56 obj->pin = pin;
mbed_official 219:993c9b0acbcc 57
mbed_official 219:993c9b0acbcc 58 // Enable DAC clock
mbed_official 219:993c9b0acbcc 59 __DAC1_CLK_ENABLE();
mbed_official 219:993c9b0acbcc 60
mbed_official 219:993c9b0acbcc 61 // Configure DAC
mbed_official 219:993c9b0acbcc 62 sConfig.DAC_Trigger = DAC_TRIGGER_NONE;
mbed_official 219:993c9b0acbcc 63 sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_DISABLE;
mbed_official 219:993c9b0acbcc 64
mbed_official 219:993c9b0acbcc 65 if (pin == PA_4) {
mbed_official 219:993c9b0acbcc 66 HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DAC_CHANNEL_1);
mbed_official 219:993c9b0acbcc 67 } else { // PA_5
mbed_official 219:993c9b0acbcc 68 HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DAC_CHANNEL_2);
mbed_official 219:993c9b0acbcc 69 }
mbed_official 219:993c9b0acbcc 70
mbed_official 219:993c9b0acbcc 71 analogout_write_u16(obj, 0);
mbed_official 219:993c9b0acbcc 72 }
mbed_official 219:993c9b0acbcc 73
mbed_official 402:09075a3b15e3 74 void analogout_free(dac_t *obj)
mbed_official 402:09075a3b15e3 75 {
mbed_official 219:993c9b0acbcc 76 // Reset DAC and disable clock
mbed_official 219:993c9b0acbcc 77 __DAC1_FORCE_RESET();
mbed_official 219:993c9b0acbcc 78 __DAC1_RELEASE_RESET();
mbed_official 219:993c9b0acbcc 79 __DAC1_CLK_DISABLE();
mbed_official 219:993c9b0acbcc 80
mbed_official 219:993c9b0acbcc 81 // Configure GPIO
mbed_official 219:993c9b0acbcc 82 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 219:993c9b0acbcc 83 }
mbed_official 219:993c9b0acbcc 84
mbed_official 402:09075a3b15e3 85 static inline void dac_write(dac_t *obj, uint16_t value)
mbed_official 402:09075a3b15e3 86 {
mbed_official 219:993c9b0acbcc 87 if (obj->pin == PA_4) {
mbed_official 219:993c9b0acbcc 88 HAL_DAC_SetValue(&DacHandle, DAC_CHANNEL_1, DAC_ALIGN_12B_R, value);
mbed_official 219:993c9b0acbcc 89 HAL_DAC_Start(&DacHandle, DAC_CHANNEL_1);
mbed_official 219:993c9b0acbcc 90 } else { // PA_5
mbed_official 219:993c9b0acbcc 91 HAL_DAC_SetValue(&DacHandle, DAC_CHANNEL_2, DAC_ALIGN_12B_R, value);
mbed_official 219:993c9b0acbcc 92 HAL_DAC_Start(&DacHandle, DAC_CHANNEL_2);
mbed_official 219:993c9b0acbcc 93 }
mbed_official 219:993c9b0acbcc 94 }
mbed_official 219:993c9b0acbcc 95
mbed_official 402:09075a3b15e3 96 static inline int dac_read(dac_t *obj)
mbed_official 402:09075a3b15e3 97 {
mbed_official 219:993c9b0acbcc 98 if (obj->pin == PA_4) {
mbed_official 219:993c9b0acbcc 99 return (int)HAL_DAC_GetValue(&DacHandle, DAC_CHANNEL_1);
mbed_official 219:993c9b0acbcc 100 } else { // PA_5
mbed_official 219:993c9b0acbcc 101 return (int)HAL_DAC_GetValue(&DacHandle, DAC_CHANNEL_2);
mbed_official 219:993c9b0acbcc 102 }
mbed_official 219:993c9b0acbcc 103 }
mbed_official 219:993c9b0acbcc 104
mbed_official 402:09075a3b15e3 105 void analogout_write(dac_t *obj, float value)
mbed_official 402:09075a3b15e3 106 {
mbed_official 219:993c9b0acbcc 107 if (value < 0.0f) {
mbed_official 219:993c9b0acbcc 108 dac_write(obj, 0); // Min value
mbed_official 219:993c9b0acbcc 109 } else if (value > 1.0f) {
mbed_official 219:993c9b0acbcc 110 dac_write(obj, (uint16_t)DAC_RANGE); // Max value
mbed_official 219:993c9b0acbcc 111 } else {
mbed_official 219:993c9b0acbcc 112 dac_write(obj, (uint16_t)(value * (float)DAC_RANGE));
mbed_official 219:993c9b0acbcc 113 }
mbed_official 219:993c9b0acbcc 114 }
mbed_official 219:993c9b0acbcc 115
mbed_official 402:09075a3b15e3 116 void analogout_write_u16(dac_t *obj, uint16_t value)
mbed_official 402:09075a3b15e3 117 {
mbed_official 219:993c9b0acbcc 118 if (value > (uint16_t)DAC_RANGE) {
mbed_official 219:993c9b0acbcc 119 dac_write(obj, (uint16_t)DAC_RANGE); // Max value
mbed_official 219:993c9b0acbcc 120 } else {
mbed_official 219:993c9b0acbcc 121 dac_write(obj, value);
mbed_official 219:993c9b0acbcc 122 }
mbed_official 219:993c9b0acbcc 123 }
mbed_official 219:993c9b0acbcc 124
mbed_official 402:09075a3b15e3 125 float analogout_read(dac_t *obj)
mbed_official 402:09075a3b15e3 126 {
mbed_official 219:993c9b0acbcc 127 uint32_t value = dac_read(obj);
mbed_official 219:993c9b0acbcc 128 return (float)((float)value * (1.0f / (float)DAC_RANGE));
mbed_official 219:993c9b0acbcc 129 }
mbed_official 219:993c9b0acbcc 130
mbed_official 402:09075a3b15e3 131 uint16_t analogout_read_u16(dac_t *obj)
mbed_official 402:09075a3b15e3 132 {
mbed_official 219:993c9b0acbcc 133 return (uint16_t)dac_read(obj);
mbed_official 219:993c9b0acbcc 134 }
mbed_official 219:993c9b0acbcc 135
mbed_official 219:993c9b0acbcc 136 #endif // DEVICE_ANALOGOUT