URL
https://opencores.org/ocsvn/openrisc/openrisc/trunk
Subversion Repositories openrisc
[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [Common/] [drivers/] [ST/] [STM32F10xFWLib/] [src/] [stm32f10x_dac.c] - Rev 637
Go to most recent revision | Compare with Previous | Blame | View Log
/** ****************************************************************************** * @file stm32f10x_dac.c * @author MCD Application Team * @version V3.0.0 * @date 04/06/2009 * @brief This file provides all the DAC firmware functions. ****************************************************************************** * @copy * * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. * * <h2><center>© COPYRIGHT 2009 STMicroelectronics</center></h2> */ /* Includes ------------------------------------------------------------------*/ #include "stm32f10x_dac.h" #include "stm32f10x_rcc.h" /** @addtogroup StdPeriph_Driver * @{ */ /** @defgroup DAC * @brief DAC driver modules * @{ */ /** @defgroup DAC_Private_TypesDefinitions * @{ */ /** * @} */ /** @defgroup DAC_Private_Defines * @{ */ /* DAC EN mask */ #define CR_EN_Set ((uint32_t)0x00000001) /* DAC DMAEN mask */ #define CR_DMAEN_Set ((uint32_t)0x00001000) /* CR register Mask */ #define CR_CLEAR_Mask ((uint32_t)0x00000FFE) /* DAC SWTRIG mask */ #define SWTRIGR_SWTRIG_Set ((uint32_t)0x00000001) /* 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 genration, mask/amplitude for wave genration */ /* 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 |= CR_EN_Set << DAC_Channel; } else { /* Disable the selected DAC channel */ DAC->CR &= ~(CR_EN_Set << DAC_Channel); } } /** * @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 |= CR_DMAEN_Set << DAC_Channel; } else { /* Disable the selected DAC channel DMA request */ DAC->CR &= ~(CR_DMAEN_Set << 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 |= SWTRIGR_SWTRIG_Set << (DAC_Channel >> 4); } else { /* Disable software trigger for the selected DAC channel */ DAC->SWTRIGR &= ~(SWTRIGR_SWTRIG_Set << (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 alignement for DAC channel1. * This parameter can be one of the following values: * @arg DAC_Align_8b_R: 8bit right data alignement selected * @arg DAC_Align_12b_L: 12bit left data alignement selected * @arg DAC_Align_12b_R: 12bit right data alignement 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) { /* Check the parameters */ assert_param(IS_DAC_ALIGN(DAC_Align)); assert_param(IS_DAC_DATA(Data)); /* Set the DAC channel1 selected data holding register */ *((__IO uint32_t *)(DAC_BASE + DHR12R1_Offset + DAC_Align)) = (uint32_t)Data; } /** * @brief Set the specified data holding register value for DAC channel2. * @param DAC_Align: Specifies the data alignement for DAC channel2. * This parameter can be one of the following values: * @arg DAC_Align_8b_R: 8bit right data alignement selected * @arg DAC_Align_12b_L: 12bit left data alignement selected * @arg DAC_Align_12b_R: 12bit right data alignement 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) { /* Check the parameters */ assert_param(IS_DAC_ALIGN(DAC_Align)); assert_param(IS_DAC_DATA(Data)); /* Set the DAC channel2 selected data holding register */ *((__IO uint32_t *)(DAC_BASE + DHR12R2_Offset + DAC_Align)) = (uint32_t)Data; } /** * @brief Set the specified data holding register value for dual channel * DAC. * @param DAC_Align: Specifies the data alignement for dual channel DAC. * This parameter can be one of the following values: * @arg DAC_Align_8b_R: 8bit right data alignement selected * @arg DAC_Align_12b_L: 12bit left data alignement selected * @arg DAC_Align_12b_R: 12bit right data alignement 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; /* 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; } /* Set the dual DAC selected data holding register */ *((__IO uint32_t *)(DAC_BASE + DHR12RD_Offset + DAC_Align)) = data; } /** * @brief Returns the last data output value of the selected DAC cahnnel. * @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) { /* Check the parameters */ assert_param(IS_DAC_CHANNEL(DAC_Channel)); /* Returns the DAC channel data output register value */ return (uint16_t) (*(__IO uint32_t*)(DAC_BASE + DOR_Offset + ((uint32_t)DAC_Channel >> 2))); } /** * @} */ /** * @} */ /** * @} */ /******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
Go to most recent revision | Compare with Previous | Blame | View Log