diff options
Diffstat (limited to 'stm32lib/src/stm32f10x_dac.c')
| -rw-r--r-- | stm32lib/src/stm32f10x_dac.c | 389 |
1 files changed, 389 insertions, 0 deletions
diff --git a/stm32lib/src/stm32f10x_dac.c b/stm32lib/src/stm32f10x_dac.c new file mode 100644 index 0000000..80eec1a --- /dev/null +++ b/stm32lib/src/stm32f10x_dac.c @@ -0,0 +1,389 @@ +/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
+* File Name : stm32f10x_dac.c
+* Author : MCD Application Team
+* Version : V2.0.2
+* Date : 07/11/2008
+* Description : This file provides all the DAC firmware functions.
+********************************************************************************
+* 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.
+*******************************************************************************/
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x_dac.h"
+#include "stm32f10x_rcc.h"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* DAC EN mask */
+#define CR_EN_Set ((u32)0x00000001)
+
+/* DAC DMAEN mask */
+#define CR_DMAEN_Set ((u32)0x00001000)
+
+/* CR register Mask */
+#define CR_CLEAR_Mask ((u32)0x00000FFE)
+
+/* DAC SWTRIG mask */
+#define SWTRIGR_SWTRIG_Set ((u32)0x00000001)
+
+/* DAC Dual Channels SWTRIG masks */
+#define DUAL_SWTRIG_Set ((u32)0x00000003)
+#define DUAL_SWTRIG_Reset ((u32)0xFFFFFFFC)
+
+/* DHR registers offsets */
+#define DHR12R1_Offset ((u32)0x00000008)
+#define DHR12R2_Offset ((u32)0x00000014)
+#define DHR12RD_Offset ((u32)0x00000020)
+
+/* DOR register offset */
+#define DOR_Offset ((u32)0x0000002C)
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/*******************************************************************************
+* Function Name : DAC_DeInit
+* Description : Deinitializes the DAC peripheral registers to their default
+* reset values.
+* Input : None.
+* Output : None
+* Return : 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);
+}
+
+/*******************************************************************************
+* Function Name : DAC_Init
+* Description : Initializes the DAC peripheral according to the specified
+* parameters in the DAC_InitStruct.
+* Input : - DAC_Channel: the selected DAC channel.
+* This parameter can be one of the following values:
+* - DAC_Channel_1: DAC Channel1 selected
+* - DAC_Channel_2: DAC Channel2 selected
+* - DAC_InitStruct: pointer to a DAC_InitTypeDef structure that
+* contains the configuration information for the specified
+* DAC channel.
+* Output : None
+* Return : None
+*******************************************************************************/
+void DAC_Init(u32 DAC_Channel, DAC_InitTypeDef* DAC_InitStruct)
+{
+ u32 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;
+}
+
+/*******************************************************************************
+* Function Name : DAC_StructInit
+* Description : Fills each DAC_InitStruct member with its default value.
+* Input : - DAC_InitStruct : pointer to a DAC_InitTypeDef structure
+* which will be initialized.
+* Output : None
+* Return : 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;
+}
+
+/*******************************************************************************
+* Function Name : DAC_Cmd
+* Description : Enables or disables the specified DAC channel.
+* Input - DAC_Channel: the selected DAC channel.
+* This parameter can be one of the following values:
+* - DAC_Channel_1: DAC Channel1 selected
+* - DAC_Channel_2: DAC Channel2 selected
+* - NewState: new state of the DAC channel.
+* This parameter can be: ENABLE or DISABLE.
+* Output : None
+* Return : None
+*******************************************************************************/
+void DAC_Cmd(u32 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);
+ }
+}
+
+/*******************************************************************************
+* Function Name : DAC_DMACmd
+* Description : Enables or disables the specified DAC channel DMA request.
+* Input - DAC_Channel: the selected DAC channel.
+* This parameter can be one of the following values:
+* - DAC_Channel_1: DAC Channel1 selected
+* - DAC_Channel_2: DAC Channel2 selected
+* - NewState: new state of the selected DAC channel DMA request.
+* This parameter can be: ENABLE or DISABLE.
+* Output : None
+* Return : None
+*******************************************************************************/
+void DAC_DMACmd(u32 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);
+ }
+}
+
+/*******************************************************************************
+* Function Name : DAC_SoftwareTriggerCmd
+* Description : Enables or disables the selected DAC channel software trigger.
+* Input - DAC_Channel: the selected DAC channel.
+* This parameter can be one of the following values:
+* - DAC_Channel_1: DAC Channel1 selected
+* - DAC_Channel_2: DAC Channel2 selected
+* - NewState: new state of the selected DAC channel software trigger.
+* This parameter can be: ENABLE or DISABLE.
+* Output : None
+* Return : None
+*******************************************************************************/
+void DAC_SoftwareTriggerCmd(u32 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));
+ }
+}
+
+/*******************************************************************************
+* Function Name : DAC_DualSoftwareTriggerCmd
+* Description : Enables or disables simultaneously the two DAC channels software
+* triggers.
+* Input - NewState: new state of the DAC channels software triggers.
+* This parameter can be: ENABLE or DISABLE.
+* Output : None
+* Return : 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;
+ }
+}
+
+/*******************************************************************************
+* Function Name : DAC_WaveGenerationCmd
+* Description : Enables or disables the selected DAC channel wave generation.
+* Input - DAC_Channel: the selected DAC channel.
+* This parameter can be one of the following values:
+* - DAC_Channel_1: DAC Channel1 selected
+* - DAC_Channel_2: DAC Channel2 selected
+* - DAC_Wave: Specifies the wave type to enable or disable.
+* This parameter can be one of the following values:
+* - DAC_Wave_Noise: noise wave generation
+* - DAC_Wave_Triangle: triangle wave generation
+* - NewState: new state of the selected DAC channel wave generation.
+* This parameter can be: ENABLE or DISABLE.
+* Output : None
+* Return : None
+*******************************************************************************/
+void DAC_WaveGenerationCmd(u32 DAC_Channel, u32 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);
+ }
+}
+
+/*******************************************************************************
+* Function Name : DAC_SetChannel1Data
+* Description : Set the specified data holding register value for DAC channel1.
+* Input : - DAC_Align: Specifies the data alignement for DAC channel1.
+* This parameter can be one of the following values:
+* - DAC_Align_8b_R: 8bit right data alignement selected
+* - DAC_Align_12b_L: 12bit left data alignement selected
+* - DAC_Align_12b_R: 12bit right data alignement selected
+* - Data : Data to be loaded in the selected data holding
+* register.
+* Output : None
+* Return : None
+*******************************************************************************/
+void DAC_SetChannel1Data(u32 DAC_Align, u16 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 */
+ *((vu32 *)(DAC_BASE + DHR12R1_Offset + DAC_Align)) = (u32)Data;
+}
+
+/*******************************************************************************
+* Function Name : DAC_SetChannel2Data
+* Description : Set the specified data holding register value for DAC channel2.
+* Input : - DAC_Align: Specifies the data alignement for DAC channel2.
+* This parameter can be one of the following values:
+* - DAC_Align_8b_R: 8bit right data alignement selected
+* - DAC_Align_12b_L: 12bit left data alignement selected
+* - DAC_Align_12b_R: 12bit right data alignement selected
+* - Data : Data to be loaded in the selected data holding
+* register.
+* Output : None
+* Return : None
+*******************************************************************************/
+void DAC_SetChannel2Data(u32 DAC_Align, u16 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 */
+ *((vu32 *)(DAC_BASE + DHR12R2_Offset + DAC_Align)) = (u32)Data;
+}
+
+/*******************************************************************************
+* Function Name : DAC_SetDualChannelData
+* Description : Set the specified data holding register value for dual channel
+* DAC.
+* Input : - DAC_Align: Specifies the data alignement for dual channel DAC.
+* This parameter can be one of the following values:
+* - DAC_Align_8b_R: 8bit right data alignement selected
+* - DAC_Align_12b_L: 12bit left data alignement selected
+* - DAC_Align_12b_R: 12bit right data alignement selected
+* - Data2: Data for DAC Channel2 to be loaded in the selected data
+* holding register.
+* - Data1: Data for DAC Channel1 to be loaded in the selected data
+* holding register.
+* Output : None
+* Return : None
+*******************************************************************************/
+void DAC_SetDualChannelData(u32 DAC_Align, u16 Data2, u16 Data1)
+{
+ u32 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 = ((u32)Data2 << 8) | Data1;
+ }
+ else
+ {
+ data = ((u32)Data2 << 16) | Data1;
+ }
+
+ /* Set the dual DAC selected data holding register */
+ *((vu32 *)(DAC_BASE + DHR12RD_Offset + DAC_Align)) = data;
+}
+
+/*******************************************************************************
+* Function Name : DAC_GetDataOutputValue
+* Description : Returns the last data output value of the selected DAC cahnnel.
+* Input - DAC_Channel: the selected DAC channel.
+* This parameter can be one of the following values:
+* - DAC_Channel_1: DAC Channel1 selected
+* - DAC_Channel_2: DAC Channel2 selected
+* Output : None
+* Return : The selected DAC channel data output value.
+*******************************************************************************/
+u16 DAC_GetDataOutputValue(u32 DAC_Channel)
+{
+ /* Check the parameters */
+ assert_param(IS_DAC_CHANNEL(DAC_Channel));
+
+ /* Returns the DAC channel data output register value */
+ return (u16) (*(vu32*)(DAC_BASE + DOR_Offset + ((u32)DAC_Channel >> 2)));
+}
+
+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
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