mbed library sources modified for open wear
Dependents: openwear-lifelogger-example
Fork of mbed-src by
Diff: targets/cmsis/TARGET_STM/TARGET_DISCO_F100RB/stm32f10x_dac.c
- Revision:
- 126:549ba18ddd81
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/cmsis/TARGET_STM/TARGET_DISCO_F100RB/stm32f10x_dac.c Wed Mar 19 16:00:09 2014 +0000 @@ -0,0 +1,586 @@ +/** + ****************************************************************************** + * @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****/