EL4121 Embedded System
mbed-os
Dependents: cobaLCDJoyMotor_Thread odometry_omni_3roda_v3 odometry_omni_3roda_v1 odometry_omni_3roda_v2 ... more
targets/TARGET_STM/TARGET_STM32F2/analogout_device.c@0:b74591d5ab33, 2017-12-11 (annotated)
- Committer:
- be_bryan
- Date:
- Mon Dec 11 17:54:04 2017 +0000
- Revision:
- 0:b74591d5ab33
motor ++
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| be_bryan | 0:b74591d5ab33 | 1 | /* mbed Microcontroller Library |
| be_bryan | 0:b74591d5ab33 | 2 | * Copyright (c) 2017, STMicroelectronics |
| be_bryan | 0:b74591d5ab33 | 3 | * All rights reserved. |
| be_bryan | 0:b74591d5ab33 | 4 | * |
| be_bryan | 0:b74591d5ab33 | 5 | * Redistribution and use in source and binary forms, with or without |
| be_bryan | 0:b74591d5ab33 | 6 | * modification, are permitted provided that the following conditions are met: |
| be_bryan | 0:b74591d5ab33 | 7 | * |
| be_bryan | 0:b74591d5ab33 | 8 | * 1. Redistributions of source code must retain the above copyright notice, |
| be_bryan | 0:b74591d5ab33 | 9 | * this list of conditions and the following disclaimer. |
| be_bryan | 0:b74591d5ab33 | 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| be_bryan | 0:b74591d5ab33 | 11 | * this list of conditions and the following disclaimer in the documentation |
| be_bryan | 0:b74591d5ab33 | 12 | * and/or other materials provided with the distribution. |
| be_bryan | 0:b74591d5ab33 | 13 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
| be_bryan | 0:b74591d5ab33 | 14 | * may be used to endorse or promote products derived from this software |
| be_bryan | 0:b74591d5ab33 | 15 | * without specific prior written permission. |
| be_bryan | 0:b74591d5ab33 | 16 | * |
| be_bryan | 0:b74591d5ab33 | 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| be_bryan | 0:b74591d5ab33 | 18 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| be_bryan | 0:b74591d5ab33 | 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| be_bryan | 0:b74591d5ab33 | 20 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| be_bryan | 0:b74591d5ab33 | 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| be_bryan | 0:b74591d5ab33 | 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| be_bryan | 0:b74591d5ab33 | 23 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| be_bryan | 0:b74591d5ab33 | 24 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| be_bryan | 0:b74591d5ab33 | 25 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| be_bryan | 0:b74591d5ab33 | 26 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| be_bryan | 0:b74591d5ab33 | 27 | */ |
| be_bryan | 0:b74591d5ab33 | 28 | #include "mbed_assert.h" |
| be_bryan | 0:b74591d5ab33 | 29 | #include "analogout_api.h" |
| be_bryan | 0:b74591d5ab33 | 30 | |
| be_bryan | 0:b74591d5ab33 | 31 | #if DEVICE_ANALOGOUT |
| be_bryan | 0:b74591d5ab33 | 32 | |
| be_bryan | 0:b74591d5ab33 | 33 | #include "cmsis.h" |
| be_bryan | 0:b74591d5ab33 | 34 | #include "pinmap.h" |
| be_bryan | 0:b74591d5ab33 | 35 | #include "mbed_error.h" |
| be_bryan | 0:b74591d5ab33 | 36 | #include "PeripheralPins.h" |
| be_bryan | 0:b74591d5ab33 | 37 | |
| be_bryan | 0:b74591d5ab33 | 38 | void analogout_init(dac_t *obj, PinName pin) |
| be_bryan | 0:b74591d5ab33 | 39 | { |
| be_bryan | 0:b74591d5ab33 | 40 | DAC_ChannelConfTypeDef sConfig = {0}; |
| be_bryan | 0:b74591d5ab33 | 41 | |
| be_bryan | 0:b74591d5ab33 | 42 | // Get the peripheral name from the pin and assign it to the object |
| be_bryan | 0:b74591d5ab33 | 43 | obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC); |
| be_bryan | 0:b74591d5ab33 | 44 | MBED_ASSERT(obj->dac != (DACName)NC); |
| be_bryan | 0:b74591d5ab33 | 45 | |
| be_bryan | 0:b74591d5ab33 | 46 | // Get the pin function and assign the used channel to the object |
| be_bryan | 0:b74591d5ab33 | 47 | uint32_t function = pinmap_function(pin, PinMap_DAC); |
| be_bryan | 0:b74591d5ab33 | 48 | MBED_ASSERT(function != (uint32_t)NC); |
| be_bryan | 0:b74591d5ab33 | 49 | |
| be_bryan | 0:b74591d5ab33 | 50 | switch (STM_PIN_CHANNEL(function)) { |
| be_bryan | 0:b74591d5ab33 | 51 | case 1: |
| be_bryan | 0:b74591d5ab33 | 52 | obj->channel = DAC_CHANNEL_1; |
| be_bryan | 0:b74591d5ab33 | 53 | break; |
| be_bryan | 0:b74591d5ab33 | 54 | #if defined(DAC_CHANNEL_2) |
| be_bryan | 0:b74591d5ab33 | 55 | case 2: |
| be_bryan | 0:b74591d5ab33 | 56 | obj->channel = DAC_CHANNEL_2; |
| be_bryan | 0:b74591d5ab33 | 57 | break; |
| be_bryan | 0:b74591d5ab33 | 58 | #endif |
| be_bryan | 0:b74591d5ab33 | 59 | default: |
| be_bryan | 0:b74591d5ab33 | 60 | error("Unknown DAC channel"); |
| be_bryan | 0:b74591d5ab33 | 61 | break; |
| be_bryan | 0:b74591d5ab33 | 62 | } |
| be_bryan | 0:b74591d5ab33 | 63 | |
| be_bryan | 0:b74591d5ab33 | 64 | // Configure GPIO |
| be_bryan | 0:b74591d5ab33 | 65 | pinmap_pinout(pin, PinMap_DAC); |
| be_bryan | 0:b74591d5ab33 | 66 | |
| be_bryan | 0:b74591d5ab33 | 67 | // Save the pin for future use |
| be_bryan | 0:b74591d5ab33 | 68 | obj->pin = pin; |
| be_bryan | 0:b74591d5ab33 | 69 | |
| be_bryan | 0:b74591d5ab33 | 70 | // Enable DAC clock |
| be_bryan | 0:b74591d5ab33 | 71 | __HAL_RCC_DAC_CLK_ENABLE(); |
| be_bryan | 0:b74591d5ab33 | 72 | |
| be_bryan | 0:b74591d5ab33 | 73 | // Configure DAC |
| be_bryan | 0:b74591d5ab33 | 74 | obj->handle.Instance = (DAC_TypeDef *)(obj->dac); |
| be_bryan | 0:b74591d5ab33 | 75 | obj->handle.State = HAL_DAC_STATE_RESET; |
| be_bryan | 0:b74591d5ab33 | 76 | |
| be_bryan | 0:b74591d5ab33 | 77 | if (HAL_DAC_Init(&obj->handle) != HAL_OK ) { |
| be_bryan | 0:b74591d5ab33 | 78 | error("HAL_DAC_Init failed"); |
| be_bryan | 0:b74591d5ab33 | 79 | } |
| be_bryan | 0:b74591d5ab33 | 80 | |
| be_bryan | 0:b74591d5ab33 | 81 | sConfig.DAC_Trigger = DAC_TRIGGER_NONE; |
| be_bryan | 0:b74591d5ab33 | 82 | sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE; |
| be_bryan | 0:b74591d5ab33 | 83 | |
| be_bryan | 0:b74591d5ab33 | 84 | if (HAL_DAC_ConfigChannel(&obj->handle, &sConfig, obj->channel) != HAL_OK) { |
| be_bryan | 0:b74591d5ab33 | 85 | error("HAL_DAC_ConfigChannel failed"); |
| be_bryan | 0:b74591d5ab33 | 86 | } |
| be_bryan | 0:b74591d5ab33 | 87 | |
| be_bryan | 0:b74591d5ab33 | 88 | analogout_write_u16(obj, 0); |
| be_bryan | 0:b74591d5ab33 | 89 | } |
| be_bryan | 0:b74591d5ab33 | 90 | |
| be_bryan | 0:b74591d5ab33 | 91 | void analogout_free(dac_t *obj) |
| be_bryan | 0:b74591d5ab33 | 92 | { |
| be_bryan | 0:b74591d5ab33 | 93 | // Reset DAC and disable clock |
| be_bryan | 0:b74591d5ab33 | 94 | __HAL_RCC_DAC_FORCE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 95 | __HAL_RCC_DAC_RELEASE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 96 | __HAL_RCC_DAC_CLK_DISABLE(); |
| be_bryan | 0:b74591d5ab33 | 97 | |
| be_bryan | 0:b74591d5ab33 | 98 | // Configure GPIO |
| be_bryan | 0:b74591d5ab33 | 99 | pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); |
| be_bryan | 0:b74591d5ab33 | 100 | } |
| be_bryan | 0:b74591d5ab33 | 101 | |
| be_bryan | 0:b74591d5ab33 | 102 | #endif // DEVICE_ANALOGOUT |