mbed library sources
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targets/hal/TARGET_STM/TARGET_NUCLEO_F334R8/analogout_api.c@414:4ec4c5b614b0, 2014-11-25 (annotated)
- Committer:
- mbed_official
- Date:
- Tue Nov 25 07:15:09 2014 +0000
- Revision:
- 414:4ec4c5b614b0
- Parent:
- 404:cbc7dfcb0ce9
Synchronized with git revision fbc74e874ac089c6cb05add312fb5422be628886
Full URL: https://github.com/mbedmicro/mbed/commit/fbc74e874ac089c6cb05add312fb5422be628886/
Targets: NUCLEOs - Add PeripheralPins files for all nucleo targets
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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mbed_official | 237:f3da66175598 | 1 | /* mbed Microcontroller Library |
mbed_official | 237:f3da66175598 | 2 | * Copyright (c) 2014, STMicroelectronics |
mbed_official | 237:f3da66175598 | 3 | * All rights reserved. |
mbed_official | 237:f3da66175598 | 4 | * |
mbed_official | 237:f3da66175598 | 5 | * Redistribution and use in source and binary forms, with or without |
mbed_official | 237:f3da66175598 | 6 | * modification, are permitted provided that the following conditions are met: |
mbed_official | 237:f3da66175598 | 7 | * |
mbed_official | 237:f3da66175598 | 8 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 237:f3da66175598 | 9 | * this list of conditions and the following disclaimer. |
mbed_official | 237:f3da66175598 | 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 237:f3da66175598 | 11 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 237:f3da66175598 | 12 | * and/or other materials provided with the distribution. |
mbed_official | 237:f3da66175598 | 13 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
mbed_official | 237:f3da66175598 | 14 | * may be used to endorse or promote products derived from this software |
mbed_official | 237:f3da66175598 | 15 | * without specific prior written permission. |
mbed_official | 237:f3da66175598 | 16 | * |
mbed_official | 237:f3da66175598 | 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 237:f3da66175598 | 18 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 237:f3da66175598 | 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 237:f3da66175598 | 20 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 237:f3da66175598 | 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 237:f3da66175598 | 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 237:f3da66175598 | 23 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 237:f3da66175598 | 24 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 237:f3da66175598 | 25 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 237:f3da66175598 | 26 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 237:f3da66175598 | 27 | */ |
mbed_official | 237:f3da66175598 | 28 | #include "mbed_assert.h" |
mbed_official | 237:f3da66175598 | 29 | #include "analogout_api.h" |
mbed_official | 237:f3da66175598 | 30 | |
mbed_official | 237:f3da66175598 | 31 | #if DEVICE_ANALOGOUT |
mbed_official | 237:f3da66175598 | 32 | |
mbed_official | 237:f3da66175598 | 33 | #include "cmsis.h" |
mbed_official | 237:f3da66175598 | 34 | #include "pinmap.h" |
mbed_official | 285:31249416b6f9 | 35 | #include "mbed_error.h" |
mbed_official | 414:4ec4c5b614b0 | 36 | #include "PeripheralPins.h" |
mbed_official | 237:f3da66175598 | 37 | |
mbed_official | 237:f3da66175598 | 38 | #define DAC_RANGE (0xFFF) // 12 bits |
mbed_official | 237:f3da66175598 | 39 | |
mbed_official | 237:f3da66175598 | 40 | static DAC_HandleTypeDef DacHandle; |
mbed_official | 237:f3da66175598 | 41 | |
mbed_official | 237:f3da66175598 | 42 | // These variables are used for the "free" function |
mbed_official | 237:f3da66175598 | 43 | static int pa4_used = 0; |
mbed_official | 237:f3da66175598 | 44 | static int pa5_used = 0; |
mbed_official | 237:f3da66175598 | 45 | |
mbed_official | 237:f3da66175598 | 46 | void analogout_init(dac_t *obj, PinName pin) |
mbed_official | 237:f3da66175598 | 47 | { |
mbed_official | 237:f3da66175598 | 48 | DAC_ChannelConfTypeDef sConfig; |
mbed_official | 237:f3da66175598 | 49 | |
mbed_official | 414:4ec4c5b614b0 | 50 | // Get the peripheral name from the pin and assign it to the object |
mbed_official | 237:f3da66175598 | 51 | obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC); |
mbed_official | 237:f3da66175598 | 52 | MBED_ASSERT(obj->dac != (DACName)NC); |
mbed_official | 237:f3da66175598 | 53 | |
mbed_official | 237:f3da66175598 | 54 | // Configure GPIO |
mbed_official | 237:f3da66175598 | 55 | pinmap_pinout(pin, PinMap_DAC); |
mbed_official | 237:f3da66175598 | 56 | |
mbed_official | 237:f3da66175598 | 57 | // Save the pin for future use |
mbed_official | 237:f3da66175598 | 58 | obj->pin = pin; |
mbed_official | 237:f3da66175598 | 59 | |
mbed_official | 237:f3da66175598 | 60 | // Enable DAC clock |
mbed_official | 237:f3da66175598 | 61 | if (obj->dac == DAC_1) { |
mbed_official | 237:f3da66175598 | 62 | __DAC1_CLK_ENABLE(); |
mbed_official | 237:f3da66175598 | 63 | } |
mbed_official | 404:cbc7dfcb0ce9 | 64 | |
mbed_official | 237:f3da66175598 | 65 | if (obj->dac == DAC_2) { |
mbed_official | 237:f3da66175598 | 66 | __DAC2_CLK_ENABLE(); |
mbed_official | 237:f3da66175598 | 67 | } |
mbed_official | 237:f3da66175598 | 68 | |
mbed_official | 237:f3da66175598 | 69 | // Configure DAC |
mbed_official | 237:f3da66175598 | 70 | DacHandle.Instance = (DAC_TypeDef *)(obj->dac); |
mbed_official | 237:f3da66175598 | 71 | |
mbed_official | 237:f3da66175598 | 72 | sConfig.DAC_Trigger = DAC_TRIGGER_NONE; |
mbed_official | 237:f3da66175598 | 73 | sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_DISABLE; |
mbed_official | 237:f3da66175598 | 74 | |
mbed_official | 237:f3da66175598 | 75 | if (pin == PA_4) { |
mbed_official | 237:f3da66175598 | 76 | HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DAC_CHANNEL_1); |
mbed_official | 237:f3da66175598 | 77 | pa4_used = 1; |
mbed_official | 237:f3da66175598 | 78 | } |
mbed_official | 237:f3da66175598 | 79 | |
mbed_official | 237:f3da66175598 | 80 | if (pin == PA_5) { |
mbed_official | 237:f3da66175598 | 81 | HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DAC_CHANNEL_2); |
mbed_official | 237:f3da66175598 | 82 | pa5_used = 1; |
mbed_official | 237:f3da66175598 | 83 | } |
mbed_official | 237:f3da66175598 | 84 | |
mbed_official | 237:f3da66175598 | 85 | if (pin == PA_6) { |
mbed_official | 237:f3da66175598 | 86 | HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DAC_CHANNEL_1); |
mbed_official | 237:f3da66175598 | 87 | } |
mbed_official | 237:f3da66175598 | 88 | |
mbed_official | 237:f3da66175598 | 89 | analogout_write_u16(obj, 0); |
mbed_official | 237:f3da66175598 | 90 | } |
mbed_official | 237:f3da66175598 | 91 | |
mbed_official | 237:f3da66175598 | 92 | void analogout_free(dac_t *obj) |
mbed_official | 237:f3da66175598 | 93 | { |
mbed_official | 237:f3da66175598 | 94 | // Reset DAC and disable clock |
mbed_official | 237:f3da66175598 | 95 | if (obj->pin == PA_4) pa4_used = 0; |
mbed_official | 237:f3da66175598 | 96 | if (obj->pin == PA_5) pa5_used = 0; |
mbed_official | 237:f3da66175598 | 97 | |
mbed_official | 237:f3da66175598 | 98 | if ((pa4_used == 0) && (pa5_used == 0)) { |
mbed_official | 237:f3da66175598 | 99 | __DAC1_FORCE_RESET(); |
mbed_official | 237:f3da66175598 | 100 | __DAC1_RELEASE_RESET(); |
mbed_official | 237:f3da66175598 | 101 | __DAC1_CLK_DISABLE(); |
mbed_official | 237:f3da66175598 | 102 | } |
mbed_official | 237:f3da66175598 | 103 | |
mbed_official | 237:f3da66175598 | 104 | if (obj->pin == PA_6) { |
mbed_official | 237:f3da66175598 | 105 | __DAC2_FORCE_RESET(); |
mbed_official | 237:f3da66175598 | 106 | __DAC2_RELEASE_RESET(); |
mbed_official | 237:f3da66175598 | 107 | __DAC2_CLK_DISABLE(); |
mbed_official | 237:f3da66175598 | 108 | } |
mbed_official | 237:f3da66175598 | 109 | |
mbed_official | 237:f3da66175598 | 110 | // Configure GPIO |
mbed_official | 237:f3da66175598 | 111 | pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); |
mbed_official | 237:f3da66175598 | 112 | } |
mbed_official | 237:f3da66175598 | 113 | |
mbed_official | 237:f3da66175598 | 114 | static inline void dac_write(dac_t *obj, uint16_t value) |
mbed_official | 237:f3da66175598 | 115 | { |
mbed_official | 237:f3da66175598 | 116 | if ((obj->pin == PA_4) || (obj->pin == PA_6)) { |
mbed_official | 237:f3da66175598 | 117 | HAL_DAC_SetValue(&DacHandle, DAC_CHANNEL_1, DAC_ALIGN_12B_R, value); |
mbed_official | 237:f3da66175598 | 118 | HAL_DAC_Start(&DacHandle, DAC_CHANNEL_1); |
mbed_official | 237:f3da66175598 | 119 | } |
mbed_official | 237:f3da66175598 | 120 | |
mbed_official | 237:f3da66175598 | 121 | if (obj->pin == PA_5) { |
mbed_official | 237:f3da66175598 | 122 | HAL_DAC_SetValue(&DacHandle, DAC_CHANNEL_2, DAC_ALIGN_12B_R, value); |
mbed_official | 237:f3da66175598 | 123 | HAL_DAC_Start(&DacHandle, DAC_CHANNEL_2); |
mbed_official | 237:f3da66175598 | 124 | } |
mbed_official | 237:f3da66175598 | 125 | } |
mbed_official | 237:f3da66175598 | 126 | |
mbed_official | 237:f3da66175598 | 127 | static inline int dac_read(dac_t *obj) |
mbed_official | 237:f3da66175598 | 128 | { |
mbed_official | 237:f3da66175598 | 129 | if ((obj->pin == PA_4) || (obj->pin == PA_6)) { |
mbed_official | 237:f3da66175598 | 130 | return (int)HAL_DAC_GetValue(&DacHandle, DAC_CHANNEL_1); |
mbed_official | 237:f3da66175598 | 131 | } else if (obj->pin == PA_5) { |
mbed_official | 237:f3da66175598 | 132 | return (int)HAL_DAC_GetValue(&DacHandle, DAC_CHANNEL_2); |
mbed_official | 237:f3da66175598 | 133 | } else { |
mbed_official | 237:f3da66175598 | 134 | return 0; |
mbed_official | 237:f3da66175598 | 135 | } |
mbed_official | 237:f3da66175598 | 136 | } |
mbed_official | 237:f3da66175598 | 137 | |
mbed_official | 237:f3da66175598 | 138 | void analogout_write(dac_t *obj, float value) |
mbed_official | 237:f3da66175598 | 139 | { |
mbed_official | 237:f3da66175598 | 140 | if (value < 0.0f) { |
mbed_official | 237:f3da66175598 | 141 | dac_write(obj, 0); // Min value |
mbed_official | 237:f3da66175598 | 142 | } else if (value > 1.0f) { |
mbed_official | 237:f3da66175598 | 143 | dac_write(obj, (uint16_t)DAC_RANGE); // Max value |
mbed_official | 237:f3da66175598 | 144 | } else { |
mbed_official | 237:f3da66175598 | 145 | dac_write(obj, (uint16_t)(value * (float)DAC_RANGE)); |
mbed_official | 237:f3da66175598 | 146 | } |
mbed_official | 237:f3da66175598 | 147 | } |
mbed_official | 237:f3da66175598 | 148 | |
mbed_official | 237:f3da66175598 | 149 | void analogout_write_u16(dac_t *obj, uint16_t value) |
mbed_official | 237:f3da66175598 | 150 | { |
mbed_official | 237:f3da66175598 | 151 | if (value > (uint16_t)DAC_RANGE) { |
mbed_official | 237:f3da66175598 | 152 | dac_write(obj, (uint16_t)DAC_RANGE); // Max value |
mbed_official | 237:f3da66175598 | 153 | } else { |
mbed_official | 237:f3da66175598 | 154 | dac_write(obj, value); |
mbed_official | 237:f3da66175598 | 155 | } |
mbed_official | 237:f3da66175598 | 156 | } |
mbed_official | 237:f3da66175598 | 157 | |
mbed_official | 237:f3da66175598 | 158 | float analogout_read(dac_t *obj) |
mbed_official | 237:f3da66175598 | 159 | { |
mbed_official | 237:f3da66175598 | 160 | uint32_t value = dac_read(obj); |
mbed_official | 237:f3da66175598 | 161 | return (float)((float)value * (1.0f / (float)DAC_RANGE)); |
mbed_official | 237:f3da66175598 | 162 | } |
mbed_official | 237:f3da66175598 | 163 | |
mbed_official | 237:f3da66175598 | 164 | uint16_t analogout_read_u16(dac_t *obj) |
mbed_official | 237:f3da66175598 | 165 | { |
mbed_official | 237:f3da66175598 | 166 | return (uint16_t)dac_read(obj); |
mbed_official | 237:f3da66175598 | 167 | } |
mbed_official | 237:f3da66175598 | 168 | |
mbed_official | 237:f3da66175598 | 169 | #endif // DEVICE_ANALOGOUT |