/**
******************************************************************************
* @file stm32f10x_adc.c
* @author MCD Application Team
* @version V3.5.0
* @date 11-March-2011
* @brief This file provides all the ADC firmware functions.
******************************************************************************
* @attention
*
* 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 2011 STMicroelectronics</center></h2>
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_adc.h"
#include "stm32f10x_rcc.h"
/** @addtogroup STM32F10x_StdPeriph_Driver
* @{
*/
/** @defgroup ADC
* @brief ADC driver modules
* @{
*/
/** @defgroup ADC_Private_TypesDefinitions
* @{
*/
/**
* @}
*/
/** @defgroup ADC_Private_Defines
* @{
*/
/* ADC DISCNUM mask */
#define CR1_DISCNUM_Reset ((uint32_t)0xFFFF1FFF)
/* ADC DISCEN mask */
#define CR1_DISCEN_Set ((uint32_t)0x00000800)
#define CR1_DISCEN_Reset ((uint32_t)0xFFFFF7FF)
/* ADC JAUTO mask */
#define CR1_JAUTO_Set ((uint32_t)0x00000400)
#define CR1_JAUTO_Reset ((uint32_t)0xFFFFFBFF)
/* ADC JDISCEN mask */
#define CR1_JDISCEN_Set ((uint32_t)0x00001000)
#define CR1_JDISCEN_Reset ((uint32_t)0xFFFFEFFF)
/* ADC AWDCH mask */
#define CR1_AWDCH_Reset ((uint32_t)0xFFFFFFE0)
/* ADC Analog watchdog enable mode mask */
#define CR1_AWDMode_Reset ((uint32_t)0xFF3FFDFF)
/* CR1 register Mask */
#define CR1_CLEAR_Mask ((uint32_t)0xFFF0FEFF)
/* ADC ADON mask */
#define CR2_ADON_Set ((uint32_t)0x00000001)
#define CR2_ADON_Reset ((uint32_t)0xFFFFFFFE)
/* ADC DMA mask */
#define CR2_DMA_Set ((uint32_t)0x00000100)
#define CR2_DMA_Reset ((uint32_t)0xFFFFFEFF)
/* ADC RSTCAL mask */
#define CR2_RSTCAL_Set ((uint32_t)0x00000008)
/* ADC CAL mask */
#define CR2_CAL_Set ((uint32_t)0x00000004)
/* ADC SWSTART mask */
#define CR2_SWSTART_Set ((uint32_t)0x00400000)
/* ADC EXTTRIG mask */
#define CR2_EXTTRIG_Set ((uint32_t)0x00100000)
#define CR2_EXTTRIG_Reset ((uint32_t)0xFFEFFFFF)
/* ADC Software start mask */
#define CR2_EXTTRIG_SWSTART_Set ((uint32_t)0x00500000)
#define CR2_EXTTRIG_SWSTART_Reset ((uint32_t)0xFFAFFFFF)
/* ADC JEXTSEL mask */
#define CR2_JEXTSEL_Reset ((uint32_t)0xFFFF8FFF)
/* ADC JEXTTRIG mask */
#define CR2_JEXTTRIG_Set ((uint32_t)0x00008000)
#define CR2_JEXTTRIG_Reset ((uint32_t)0xFFFF7FFF)
/* ADC JSWSTART mask */
#define CR2_JSWSTART_Set ((uint32_t)0x00200000)
/* ADC injected software start mask */
#define CR2_JEXTTRIG_JSWSTART_Set ((uint32_t)0x00208000)
#define CR2_JEXTTRIG_JSWSTART_Reset ((uint32_t)0xFFDF7FFF)
/* ADC TSPD mask */
#define CR2_TSVREFE_Set ((uint32_t)0x00800000)
#define CR2_TSVREFE_Reset ((uint32_t)0xFF7FFFFF)
/* CR2 register Mask */
#define CR2_CLEAR_Mask ((uint32_t)0xFFF1F7FD)
/* ADC SQx mask */
#define SQR3_SQ_Set ((uint32_t)0x0000001F)
#define SQR2_SQ_Set ((uint32_t)0x0000001F)
#define SQR1_SQ_Set ((uint32_t)0x0000001F)
/* SQR1 register Mask */
#define SQR1_CLEAR_Mask ((uint32_t)0xFF0FFFFF)
/* ADC JSQx mask */
#define JSQR_JSQ_Set ((uint32_t)0x0000001F)
/* ADC JL mask */
#define JSQR_JL_Set ((uint32_t)0x00300000)
#define JSQR_JL_Reset ((uint32_t)0xFFCFFFFF)
/* ADC SMPx mask */
#define SMPR1_SMP_Set ((uint32_t)0x00000007)
#define SMPR2_SMP_Set ((uint32_t)0x00000007)
/* ADC JDRx registers offset */
#define JDR_Offset ((uint8_t)0x28)
/* ADC1 DR register base address */
#define DR_ADDRESS ((uint32_t)0x4001244C)
/**
* @}
*/
/** @defgroup ADC_Private_Macros
* @{
*/
/**
* @}
*/
/** @defgroup ADC_Private_Variables
* @{
*/
/**
* @}
*/
/** @defgroup ADC_Private_FunctionPrototypes
* @{
*/
/**
* @}
*/
/** @defgroup ADC_Private_Functions
* @{
*/
/**
* @brief Deinitializes the ADCx peripheral registers to their default reset values.
* @param ADCx: where x can be 1, 2 or 3 to select the ADC peripheral.
* @retval None
*/
void ADC_DeInit(ADC_TypeDef* ADCx)
{
/* Check the parameters */
assert_param(IS_ADC_ALL_PERIPH(ADCx));
if (ADCx == ADC1)
{
/* Enable ADC1 reset state */
RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1, ENABLE);
/* Release ADC1 from reset state */
RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1, DISABLE);
}
else if (ADCx == ADC2)
{
/* Enable ADC2 reset state */
RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC2, ENABLE);
/* Release ADC2 from reset state */
RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC2, DISABLE);
}
else
{
if (ADCx == ADC3)
{
/* Enable ADC3 reset state */
RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC3, ENABLE);
/* Release ADC3 from reset state */
RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC3, DISABLE);
}
}
}
/**
* @brief Initializes the ADCx peripheral according to the specified parameters
* in the ADC_InitStruct.
* @param ADCx: where x can be 1, 2 or 3 to select the ADC peripheral.
* @param ADC_InitStruct: pointer to an ADC_InitTypeDef structure that contains
* the configuration information for the specified ADC peripheral.
* @retval None
*/
void ADC_Init(ADC_TypeDef* ADCx, ADC_InitTypeDef* ADC_InitStruct)
{
uint32_t tmpreg1 = 0;
uint8_t tmpreg2 = 0;
/* Check the parameters */
assert_param(IS_ADC_ALL_PERIPH(ADCx));
assert_param(IS_ADC_MODE(ADC_InitStruct->ADC_Mode));
assert_param(IS_FUNCTIONAL_STATE(ADC_InitStruct->ADC_ScanConvMode));
assert_param(IS_FUNCTIONAL_STATE(ADC_InitStruct->ADC_ContinuousConvMode));
assert_param(IS_ADC_EXT_TRIG(ADC_InitStruct->ADC_ExternalTrigConv));
assert_param(IS_ADC_DATA_ALIGN(ADC_InitStruct->ADC_DataAlign));
assert_param(IS_ADC_REGULAR_LENGTH(ADC_InitStruct->ADC_NbrOfChannel));
/*---------------------------- ADCx CR1 Configuration -----------------*/
/* Get the ADCx CR1 value */
tmpreg1 = ADCx->CR1;
/* Clear DUALMOD and SCAN bits */
tmpreg1 &= CR1_CLEAR_Mask;
/* Configure ADCx: Dual mode and scan conversion mode */
/* Set DUALMOD bits according to ADC_Mode value */
/* Set SCAN bit according to ADC_ScanConvMode value */
tmpreg1 |= (uint32_t)(ADC_InitStruct->ADC_Mode | ((uint32_t)ADC_InitStruct->ADC_ScanConvMode << 8));
/* Write to ADCx CR1 */
ADCx->CR1 = tmpreg1;
/*---------------------------- ADCx CR2 Configuration -----------------*/
/* Get the ADCx CR2 value */
tmpreg1 = ADCx->CR2;
/* Clear CONT, ALIGN and EXTSEL bits */
tmpreg1 &= CR2_CLEAR_Mask;
/* Configure ADCx: external trigger event and continuous conversion mode */
/* Set ALIGN bit according to ADC_DataAlign value */
/* Set EXTSEL bits according to ADC_ExternalTrigConv value */
/* Set CONT bit according to ADC_ContinuousConvMode value */
tmpreg1 |= (uint32_t)(ADC_InitStruct->ADC_DataAlign | ADC_InitStruct->ADC_Extern
