mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/cmsis/TARGET_STM/TARGET_DISCO_F100RB/stm32f10x_dac.c
- Committer:
- shaoziyang
- Date:
- 2014-09-13
- Revision:
- 323:9e901b0a5aa1
- Parent:
- 126:549ba18ddd81
File content as of revision 323:9e901b0a5aa1:
/** ****************************************************************************** * @file stm32f10x_dac.c * @author MCD Application Team * @version V3.6.1 * @date 05-March-2012 * @brief This file provides all the DAC firmware functions. ******************************************************************************* * Copyright (c) 2014, STMicroelectronics * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ******************************************************************************* */ /* Includes ------------------------------------------------------------------*/ #include "stm32f10x_dac.h" #include "stm32f10x_rcc.h" /** @addtogroup STM32F10x_StdPeriph_Driver * @{ */ /** @defgroup DAC * @brief DAC driver modules * @{ */ /** @defgroup DAC_Private_TypesDefinitions * @{ */ /** * @} */ /** @defgroup DAC_Private_Defines * @{ */ /* CR register Mask */ #define CR_CLEAR_MASK ((uint32_t)0x00000FFE) /* DAC Dual Channels SWTRIG masks */ #define DUAL_SWTRIG_SET ((uint32_t)0x00000003) #define DUAL_SWTRIG_RESET ((uint32_t)0xFFFFFFFC) /* DHR registers offsets */ #define DHR12R1_OFFSET ((uint32_t)0x00000008) #define DHR12R2_OFFSET ((uint32_t)0x00000014) #define DHR12RD_OFFSET ((uint32_t)0x00000020) /* DOR register offset */ #define DOR_OFFSET ((uint32_t)0x0000002C) /** * @} */ /** @defgroup DAC_Private_Macros * @{ */ /** * @} */ /** @defgroup DAC_Private_Variables * @{ */ /** * @} */ /** @defgroup DAC_Private_FunctionPrototypes * @{ */ /** * @} */ /** @defgroup DAC_Private_Functions * @{ */ /** * @brief Deinitializes the DAC peripheral registers to their default reset values. * @param None * @retval None */ void DAC_DeInit(void) { /* Enable DAC reset state */ RCC_APB1PeriphResetCmd(RCC_APB1Periph_DAC, ENABLE); /* Release DAC from reset state */ RCC_APB1PeriphResetCmd(RCC_APB1Periph_DAC, DISABLE); } /** * @brief Initializes the DAC peripheral according to the specified * parameters in the DAC_InitStruct. * @param DAC_Channel: the selected DAC channel. * This parameter can be one of the following values: * @arg DAC_Channel_1: DAC Channel1 selected * @arg DAC_Channel_2: DAC Channel2 selected * @param DAC_InitStruct: pointer to a DAC_InitTypeDef structure that * contains the configuration information for the specified DAC channel. * @retval None */ void DAC_Init(uint32_t DAC_Channel, DAC_InitTypeDef* DAC_InitStruct) { uint32_t tmpreg1 = 0, tmpreg2 = 0; /* Check the DAC parameters */ assert_param(IS_DAC_TRIGGER(DAC_InitStruct->DAC_Trigger)); assert_param(IS_DAC_GENERATE_WAVE(DAC_InitStruct->DAC_WaveGeneration)); assert_param(IS_DAC_LFSR_UNMASK_TRIANGLE_AMPLITUDE(DAC_InitStruct->DAC_LFSRUnmask_TriangleAmplitude)); assert_param(IS_DAC_OUTPUT_BUFFER_STATE(DAC_InitStruct->DAC_OutputBuffer)); /*---------------------------- DAC CR Configuration --------------------------*/ /* Get the DAC CR value */ tmpreg1 = DAC->CR; /* Clear BOFFx, TENx, TSELx, WAVEx and MAMPx bits */ tmpreg1 &= ~(CR_CLEAR_MASK << DAC_Channel); /* Configure for the selected DAC channel: buffer output, trigger, wave generation, mask/amplitude for wave generation */ /* Set TSELx and TENx bits according to DAC_Trigger value */ /* Set WAVEx bits according to DAC_WaveGeneration value */ /* Set MAMPx bits according to DAC_LFSRUnmask_TriangleAmplitude value */ /* Set BOFFx bit according to DAC_OutputBuffer value */ tmpreg2 = (DAC_InitStruct->DAC_Trigger | DAC_InitStruct->DAC_WaveGeneration | DAC_InitStruct->DAC_LFSRUnmask_TriangleAmplitude | DAC_InitStruct->DAC_OutputBuffer); /* Calculate CR register value depending on DAC_Channel */ tmpreg1 |= tmpreg2 << DAC_Channel; /* Write to DAC CR */ DAC->CR = tmpreg1; } /** * @brief Fills each DAC_InitStruct member with its default value. * @param DAC_InitStruct : pointer to a DAC_InitTypeDef structure which will * be initialized. * @retval None */ void DAC_StructInit(DAC_InitTypeDef* DAC_InitStruct) { /*--------------- Reset DAC init structure parameters values -----------------*/ /* Initialize the DAC_Trigger member */ DAC_InitStruct->DAC_Trigger = DAC_Trigger_None; /* Initialize the DAC_WaveGeneration member */ DAC_InitStruct->DAC_WaveGeneration = DAC_WaveGeneration_None; /* Initialize the DAC_LFSRUnmask_TriangleAmplitude member */ DAC_InitStruct->DAC_LFSRUnmask_TriangleAmplitude = DAC_LFSRUnmask_Bit0; /* Initialize the DAC_OutputBuffer member */ DAC_InitStruct->DAC_OutputBuffer = DAC_OutputBuffer_Enable; } /** * @brief Enables or disables the specified DAC channel. * @param DAC_Channel: the selected DAC channel. * This parameter can be one of the following values: * @arg DAC_Channel_1: DAC Channel1 selected * @arg DAC_Channel_2: DAC Channel2 selected * @param NewState: new state of the DAC channel. * This parameter can be: ENABLE or DISABLE. * @retval None */ void DAC_Cmd(uint32_t DAC_Channel, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_DAC_CHANNEL(DAC_Channel)); assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected DAC channel */ DAC->CR |= (DAC_CR_EN1 << DAC_Channel); } else { /* Disable the selected DAC channel */ DAC->CR &= ~(DAC_CR_EN1 << DAC_Channel); } } #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL) /** * @brief Enables or disables the specified DAC interrupts. * @param DAC_Channel: the selected DAC channel. * This parameter can be one of the following values: * @arg DAC_Channel_1: DAC Channel1 selected * @arg DAC_Channel_2: DAC Channel2 selected * @param DAC_IT: specifies the DAC interrupt sources to be enabled or disabled. * This parameter can be the following values: * @arg DAC_IT_DMAUDR: DMA underrun interrupt mask * @param NewState: new state of the specified DAC interrupts. * This parameter can be: ENABLE or DISABLE. * @retval None */ void DAC_ITConfig(uint32_t DAC_Channel, uint32_t DAC_IT, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_DAC_CHANNEL(DAC_Channel)); assert_param(IS_FUNCTIONAL_STATE(NewState)); assert_param(IS_DAC_IT(DAC_IT)); if (NewState != DISABLE) { /* Enable the selected DAC interrupts */ DAC->CR |= (DAC_IT << DAC_Channel); } else { /* Disable the selected DAC interrupts */ DAC->CR &= (~(uint32_t)(DAC_IT << DAC_Channel)); } } #endif /** * @brief Enables or disables the specified DAC channel DMA request. * @param DAC_Channel: the selected DAC channel. * This parameter can be one of the following values: * @arg DAC_Channel_1: DAC Channel1 selected * @arg DAC_Channel_2: DAC Channel2 selected * @param NewState: new state of the selected DAC channel DMA request. * This parameter can be: ENABLE or DISABLE. * @retval None */ void DAC_DMACmd(uint32_t DAC_Channel, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_DAC_CHANNEL(DAC_Channel)); assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected DAC channel DMA request */ DAC->CR |= (DAC_CR_DMAEN1 << DAC_Channel); } else { /* Disable the selected DAC channel DMA request */ DAC->CR &= ~(DAC_CR_DMAEN1 << DAC_Channel); } } /** * @brief Enables or disables the selected DAC channel software trigger. * @param DAC_Channel: the selected DAC channel. * This parameter can be one of the following values: * @arg DAC_Channel_1: DAC Channel1 selected * @arg DAC_Channel_2: DAC Channel2 selected * @param NewState: new state of the selected DAC channel software trigger. * This parameter can be: ENABLE or DISABLE. * @retval None */ void DAC_SoftwareTriggerCmd(uint32_t DAC_Channel, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_DAC_CHANNEL(DAC_Channel)); assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable software trigger for the selected DAC channel */ DAC->SWTRIGR |= (uint32_t)DAC_SWTRIGR_SWTRIG1 << (DAC_Channel >> 4); } else { /* Disable software trigger for the selected DAC channel */ DAC->SWTRIGR &= ~((uint32_t)DAC_SWTRIGR_SWTRIG1 << (DAC_Channel >> 4)); } } /** * @brief Enables or disables simultaneously the two DAC channels software * triggers. * @param NewState: new state of the DAC channels software triggers. * This parameter can be: ENABLE or DISABLE. * @retval None */ void DAC_DualSoftwareTriggerCmd(FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable software trigger for both DAC channels */ DAC->SWTRIGR |= DUAL_SWTRIG_SET ; } else { /* Disable software trigger for both DAC channels */ DAC->SWTRIGR &= DUAL_SWTRIG_RESET; } } /** * @brief Enables or disables the selected DAC channel wave generation. * @param DAC_Channel: the selected DAC channel. * This parameter can be one of the following values: * @arg DAC_Channel_1: DAC Channel1 selected * @arg DAC_Channel_2: DAC Channel2 selected * @param DAC_Wave: Specifies the wave type to enable or disable. * This parameter can be one of the following values: * @arg DAC_Wave_Noise: noise wave generation * @arg DAC_Wave_Triangle: triangle wave generation * @param NewState: new state of the selected DAC channel wave generation. * This parameter can be: ENABLE or DISABLE. * @retval None */ void DAC_WaveGenerationCmd(uint32_t DAC_Channel, uint32_t DAC_Wave, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_DAC_CHANNEL(DAC_Channel)); assert_param(IS_DAC_WAVE(DAC_Wave)); assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected wave generation for the selected DAC channel */ DAC->CR |= DAC_Wave << DAC_Channel; } else { /* Disable the selected wave generation for the selected DAC channel */ DAC->CR &= ~(DAC_Wave << DAC_Channel); } } /** * @brief Set the specified data holding register value for DAC channel1. * @param DAC_Align: Specifies the data alignment for DAC channel1. * This parameter can be one of the following values: * @arg DAC_Align_8b_R: 8bit right data alignment selected * @arg DAC_Align_12b_L: 12bit left data alignment selected * @arg DAC_Align_12b_R: 12bit right data alignment selected * @param Data : Data to be loaded in the selected data holding register. * @retval None */ void DAC_SetChannel1Data(uint32_t DAC_Align, uint16_t Data) { __IO uint32_t tmp = 0; /* Check the parameters */ assert_param(IS_DAC_ALIGN(DAC_Align)); assert_param(IS_DAC_DATA(Data)); tmp = (uint32_t)DAC_BASE; tmp += DHR12R1_OFFSET + DAC_Align; /* Set the DAC channel1 selected data holding register */ *(__IO uint32_t *) tmp = Data; } /** * @brief Set the specified data holding register value for DAC channel2. * @param DAC_Align: Specifies the data alignment for DAC channel2. * This parameter can be one of the following values: * @arg DAC_Align_8b_R: 8bit right data alignment selected * @arg DAC_Align_12b_L: 12bit left data alignment selected * @arg DAC_Align_12b_R: 12bit right data alignment selected * @param Data : Data to be loaded in the selected data holding register. * @retval None */ void DAC_SetChannel2Data(uint32_t DAC_Align, uint16_t Data) { __IO uint32_t tmp = 0; /* Check the parameters */ assert_param(IS_DAC_ALIGN(DAC_Align)); assert_param(IS_DAC_DATA(Data)); tmp = (uint32_t)DAC_BASE; tmp += DHR12R2_OFFSET + DAC_Align; /* Set the DAC channel2 selected data holding register */ *(__IO uint32_t *)tmp = Data; } /** * @brief Set the specified data holding register value for dual channel * DAC. * @param DAC_Align: Specifies the data alignment for dual channel DAC. * This parameter can be one of the following values: * @arg DAC_Align_8b_R: 8bit right data alignment selected * @arg DAC_Align_12b_L: 12bit left data alignment selected * @arg DAC_Align_12b_R: 12bit right data alignment selected * @param Data2: Data for DAC Channel2 to be loaded in the selected data * holding register. * @param Data1: Data for DAC Channel1 to be loaded in the selected data * holding register. * @retval None */ void DAC_SetDualChannelData(uint32_t DAC_Align, uint16_t Data2, uint16_t Data1) { uint32_t data = 0, tmp = 0; /* Check the parameters */ assert_param(IS_DAC_ALIGN(DAC_Align)); assert_param(IS_DAC_DATA(Data1)); assert_param(IS_DAC_DATA(Data2)); /* Calculate and set dual DAC data holding register value */ if (DAC_Align == DAC_Align_8b_R) { data = ((uint32_t)Data2 << 8) | Data1; } else { data = ((uint32_t)Data2 << 16) | Data1; } tmp = (uint32_t)DAC_BASE; tmp += DHR12RD_OFFSET + DAC_Align; /* Set the dual DAC selected data holding register */ *(__IO uint32_t *)tmp = data; } /** * @brief Returns the last data output value of the selected DAC channel. * @param DAC_Channel: the selected DAC channel. * This parameter can be one of the following values: * @arg DAC_Channel_1: DAC Channel1 selected * @arg DAC_Channel_2: DAC Channel2 selected * @retval The selected DAC channel data output value. */ uint16_t DAC_GetDataOutputValue(uint32_t DAC_Channel) { __IO uint32_t tmp = 0; /* Check the parameters */ assert_param(IS_DAC_CHANNEL(DAC_Channel)); tmp = (uint32_t) DAC_BASE ; tmp += DOR_OFFSET + ((uint32_t)DAC_Channel >> 2); /* Returns the DAC channel data output register value */ return (uint16_t) (*(__IO uint32_t*) tmp); } #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL) /** * @brief Checks whether the specified DAC flag is set or not. * @param DAC_Channel: thee selected DAC channel. * This parameter can be one of the following values: * @arg DAC_Channel_1: DAC Channel1 selected * @arg DAC_Channel_2: DAC Channel2 selected * @param DAC_FLAG: specifies the flag to check. * This parameter can be only of the following value: * @arg DAC_FLAG_DMAUDR: DMA underrun flag * @retval The new state of DAC_FLAG (SET or RESET). */ FlagStatus DAC_GetFlagStatus(uint32_t DAC_Channel, uint32_t DAC_FLAG) { FlagStatus bitstatus = RESET; /* Check the parameters */ assert_param(IS_DAC_CHANNEL(DAC_Channel)); assert_param(IS_DAC_FLAG(DAC_FLAG)); /* Check the status of the specified DAC flag */ if ((DAC->SR & (DAC_FLAG << DAC_Channel)) != (uint8_t)RESET) { /* DAC_FLAG is set */ bitstatus = SET; } else { /* DAC_FLAG is reset */ bitstatus = RESET; } /* Return the DAC_FLAG status */ return bitstatus; } /** * @brief Clears the DAC channelx's pending flags. * @param DAC_Channel: the selected DAC channel. * This parameter can be one of the following values: * @arg DAC_Channel_1: DAC Channel1 selected * @arg DAC_Channel_2: DAC Channel2 selected * @param DAC_FLAG: specifies the flag to clear. * This parameter can be of the following value: * @arg DAC_FLAG_DMAUDR: DMA underrun flag * @retval None */ void DAC_ClearFlag(uint32_t DAC_Channel, uint32_t DAC_FLAG) { /* Check the parameters */ assert_param(IS_DAC_CHANNEL(DAC_Channel)); assert_param(IS_DAC_FLAG(DAC_FLAG)); /* Clear the selected DAC flags */ DAC->SR = (DAC_FLAG << DAC_Channel); } /** * @brief Checks whether the specified DAC interrupt has occurred or not. * @param DAC_Channel: the selected DAC channel. * This parameter can be one of the following values: * @arg DAC_Channel_1: DAC Channel1 selected * @arg DAC_Channel_2: DAC Channel2 selected * @param DAC_IT: specifies the DAC interrupt source to check. * This parameter can be the following values: * @arg DAC_IT_DMAUDR: DMA underrun interrupt mask * @retval The new state of DAC_IT (SET or RESET). */ ITStatus DAC_GetITStatus(uint32_t DAC_Channel, uint32_t DAC_IT) { ITStatus bitstatus = RESET; uint32_t enablestatus = 0; /* Check the parameters */ assert_param(IS_DAC_CHANNEL(DAC_Channel)); assert_param(IS_DAC_IT(DAC_IT)); /* Get the DAC_IT enable bit status */ enablestatus = (DAC->CR & (DAC_IT << DAC_Channel)) ; /* Check the status of the specified DAC interrupt */ if (((DAC->SR & (DAC_IT << DAC_Channel)) != (uint32_t)RESET) && enablestatus) { /* DAC_IT is set */ bitstatus = SET; } else { /* DAC_IT is reset */ bitstatus = RESET; } /* Return the DAC_IT status */ return bitstatus; } /** * @brief Clears the DAC channelx's interrupt pending bits. * @param DAC_Channel: the selected DAC channel. * This parameter can be one of the following values: * @arg DAC_Channel_1: DAC Channel1 selected * @arg DAC_Channel_2: DAC Channel2 selected * @param DAC_IT: specifies the DAC interrupt pending bit to clear. * This parameter can be the following values: * @arg DAC_IT_DMAUDR: DMA underrun interrupt mask * @retval None */ void DAC_ClearITPendingBit(uint32_t DAC_Channel, uint32_t DAC_IT) { /* Check the parameters */ assert_param(IS_DAC_CHANNEL(DAC_Channel)); assert_param(IS_DAC_IT(DAC_IT)); /* Clear the selected DAC interrupt pending bits */ DAC->SR = (DAC_IT << DAC_Channel); } #endif /** * @} */ /** * @} */ /** * @} */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/