/** | |
****************************************************************************** | |
* @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****/ |