/**
******************************************************************************
* @file stm32f3xx_hal_tsc.c
* @author MCD Application Team
* @version V1.3.0
* @date 01-July-2016
* @brief This file provides firmware functions to manage the following
* functionalities of the Touch Sensing Controller (TSC) peripheral:
* + Initialization and De-initialization
* + Channel IOs, Shield IOs and Sampling IOs configuration
* + Start and Stop an acquisition
* + Read acquisition result
* + Interrupts and flags management
*
@verbatim
================================================================================
##### TSC specific features #####
================================================================================
[..]
(#) Proven and robust surface charge transfer acquisition principle
(#) Supports up to 3 capacitive sensing channels per group
(#) Capacitive sensing channels can be acquired in parallel offering a very good
response time
(#) Spread spectrum feature to improve system robustness in noisy environments
(#) Full hardware management of the charge transfer acquisition sequence
(#) Programmable charge transfer frequency
(#) Programmable sampling capacitor I/O pin
(#) Programmable channel I/O pin
(#) Programmable max count value to avoid long acquisition when a channel is faulty
(#) Dedicated end of acquisition and max count error flags with interrupt capability
(#) One sampling capacitor for up to 3 capacitive sensing channels to reduce the system
components
(#) Compatible with proximity, touchkey, linear and rotary touch sensor implementation
##### How to use this driver #####
================================================================================
[..]
(#) Enable the TSC interface clock using __HAL_RCC_TSC_CLK_ENABLE() macro.
(#) GPIO pins configuration
(++) Enable the clock for the TSC GPIOs using __HAL_RCC_GPIOx_CLK_ENABLE() macro.
(++) Configure the TSC pins used as sampling IOs in alternate function output Open-Drain mode,
and TSC pins used as channel/shield IOs in alternate function output Push-Pull mode
using HAL_GPIO_Init() function.
(#) Interrupts configuration
(++) Configure the NVIC (if the interrupt model is used) using HAL_NVIC_SetPriority()
and HAL_NVIC_EnableIRQ() and function.
(#) TSC configuration
(++) Configure all TSC parameters and used TSC IOs using HAL_TSC_Init() function.
*** Acquisition sequence ***
===================================
[..]
(+) Discharge all IOs using HAL_TSC_IODischarge() function.
(+) Wait a certain time allowing a good discharge of all capacitors. This delay depends
of the sampling capacitor and electrodes design.
(+) Select the channel IOs to be acquired using HAL_TSC_IOConfig() function.
(+) Launch the acquisition using either HAL_TSC_Start() or HAL_TSC_Start_IT() function.
If the synchronized mode is selected, the acquisition will start as soon as the signal
is received on the synchro pin.
(+) Wait the end of acquisition using either HAL_TSC_PollForAcquisition() or
HAL_TSC_GetState() function or using WFI instruction for example.
(+) Check the group acquisition status using HAL_TSC_GroupGetStatus() function.
(+) Read the acquisition value using HAL_TSC_GroupGetValue() function.
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* 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.
*
******************************************************************************
*/
/*
Addition Table:
Table 1. IOs for the STM32F3xx devices
+--------------------------------+
| IOs | TSC functions |
|--------------|-----------------|
| PA0 (AF) | TSC_G1_IO1 |
| PA1 (AF) | TSC_G1_IO2 |
| PA2 (AF) | TSC_G1_IO3 |
| PA3 (AF) | TSC_G1_IO4 |
|--------------|-----------------|
| PA4 (AF) | TSC_G2_IO1 |
| PA5 (AF) | TSC_G2_IO2 |
| PA6 (AF) | TSC_G2_IO3 |
| PA7 (AF) | TSC_G2_IO4 |
|--------------|-----------------|
| PC5 (AF) | TSC_G3_IO1 |
| PB0 (AF) | TSC_G3_IO2 |
| PB1 (AF) | TSC_G3_IO3 |
| PB2 (AF) | TSC_G3_IO4 |
|--------------|-----------------|
| PA9 (AF) | TSC_G4_IO1 |
| PA10 (AF) | TSC_G4_IO2 |
| PA13 (AF) | TSC_G4_IO3 |
| PA14 (AF) | TSC_G4_IO4 |
|--------------|-----------------|
| PB3 (AF) | TSC_G5_IO1 |
| PB4 (AF) | TSC_G5_IO2 |
| PB6 (AF) | TSC_G5_IO3 |
| PB7 (AF) | TSC_G5_IO4 |
|--------------|-----------------|
| PB11 (AF) | TSC_G6_IO1 |
| PB12 (AF) | TSC_G6_IO2 |
| PB13 (AF) | TSC_G6_IO3 |
| PB14 (AF) | TSC_G6_IO4 |
|--------------|-----------------|
| PE2 (AF) | TSC_G7_IO1 |
| PE3 (AF) | TSC_G7_IO2 |
| PE4 (AF) | TSC_G7_IO3 |
| PE5 (AF) | TSC_G7_IO4 |
|--------------|-----------------|
| PD12 (AF) | TSC_G8_IO1 |
| PD13 (AF) | TSC_G8_IO2 |
| PD14 (AF) | TSC_G8_IO3 |
| PD15 (AF) | TSC_G8_IO4 |
|--------------|-----------------|
| PB8 (AF) | TSC_SYNC |
| PB10 (AF) | |
+--------------------------------+
TSC peripheral alternate functions are mapped on AF3.
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f3xx_hal.h"
/** @addtogroup STM32F3xx_HAL_Driver
* @{
*/
/** @defgroup TSC TSC
* @brief HAL TSC module driver
* @{
*/
#ifdef HAL_TSC_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
static uint32_t TSC_extract_groups(uint32_t iomask);
/* Exported functions --------------------------------------------------------*/
/** @defgroup TSC_Exported_Functions Exported Functions
* @{
*/
/** @defgroup TSC_Exported_Functions_Group1 Initialization and de-initialization functions
* @brief Initialization and Configuration functions
*
@verbatim
===============================================================================
##### Initialization and de-initialization functions #####
===============================================================================
[..] This section provides functions allowing to:
(+) Initialize and configure the TSC.
(+) De-initialize the TSC.
@endverbatim
* @{
*/
/**
* @brief Initialize the TSC peripheral according to the specified parameters
* in the TSC_InitTypeDef structure and initialize the associated handle.
* @param htsc: TSC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_TSC_Init(TSC_HandleTypeDef* htsc)
{
/* Check TSC handle allocation */
if (htsc == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_TSC_ALL_INSTANCE(htsc->Instance));
assert_param(IS_TSC_CTPH(htsc->Init.CTPulseHighLength));
assert_param(IS_TSC_CTPL(htsc->Init.CTPulseLowLength));
assert_param(IS_TSC_SS(htsc->Init.SpreadSpectrum));
assert_param(IS_TSC_SSD(htsc->Init.SpreadSpectrumDeviation));
assert_param(IS_TSC_SS_PRESC(htsc->Init.SpreadSpectrumPrescaler));
assert_param(IS_TSC_PG_PRESC(htsc->Init.PulseGeneratorPrescaler));
assert_param(IS_TSC_MCV(htsc->Init.MaxCountValue));
assert_param(IS_TSC_IODEF(htsc->Init.IODefaultMode));
assert_param(IS_TSC_SYNC_POL(htsc->Init.SynchroPinPolarity));
assert_param(IS_TSC_ACQ_MODE(htsc->Init.AcquisitionMode));
assert_param(IS_TSC_MCE_IT(htsc->Init.MaxCountInterrupt));
if(htsc->State == HAL_TSC_STATE_RESET)
{
/* Allocate lock resource and initialize it */
htsc->Lock = HAL_UNLOCKED;
}
/* Initialize the TSC state */
htsc->State = HAL_TSC_STATE_BUSY;
/* Init the low level hardware : GPIO, CLOCK, CORTEX */
HAL_TSC_MspInit(htsc);
/*--------------------------------------------------------------------------*/
/* Set TSC parameters */
/* Enable TSC */
htsc->Instance->CR = TSC_CR_TSCE;
/* Set all functions */
htsc->Instance->CR |= (htsc->Init.CTPulseHighLength |
htsc->Init.CTPulseLowLength |
(uint32_t)(htsc->Init.SpreadSpectrumDeviation << 17) |
htsc->Init.SpreadSpectrumPrescaler |
htsc->Init.PulseGeneratorPrescaler |
htsc->Init.MaxCountValue |
htsc->Init.SynchroPinPolarity |
htsc->Init.AcquisitionMode);
/* Spread spectrum */
if (htsc->Init.SpreadSpectrum == ENABLE)
{
htsc->Instance->CR |= TSC_CR_SSE;
}
/* Disable Schmitt trigger hysteresis on all used TSC IOs */
htsc->Instance->IOHCR = (uint32_t)(~(htsc->Init.ChannelIOs | htsc->Init.ShieldIOs | htsc->Init.SamplingIOs));
/* Set channel and shield IOs */
htsc->Instance->IOCCR = (htsc->Init.ChannelIOs | htsc->Init.ShieldIOs);
/* Set sampling IOs */
htsc->Instance->IOSCR = htsc->Init.SamplingIOs;
/* Set the groups to be acquired */
htsc->Instance->IOGCSR = TSC_extract_groups(htsc->Init.ChannelIOs);
/* Disable interrupts */
htsc->Instance->IER &= (uint32_t)(~(TSC_IT_EOA | TSC_IT_MCE));
/* Clear flags */
htsc->Instance->ICR = (TSC_FLAG_EOA | TSC_FLAG_MCE);
/*--------------------------------------------------------------------------*/
/* Initialize the TSC state */
htsc->State = HAL_TSC_STATE_READY;
/* Return function status */
return HAL_OK;
}
/**
* @brief Deinitialize the TSC peripheral registers to their default reset values.
* @param htsc: TSC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_TSC_DeInit(TSC_HandleTypeDef* htsc)
{
/* Check TSC handle allocation */
if (htsc == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_TSC_ALL_INSTANCE(htsc->Instance));
/* Change TSC state */
htsc->State = HAL_TSC_STATE_BUSY;
/* DeInit the low level hardware */
HAL_TSC_MspDeInit(htsc);
/* Change TSC state */
htsc->State = HAL_TSC_STATE_RESET;
/* Process unlocked */
__HAL_UNLOCK(htsc);
/* Return function status */
return HAL_OK;
}
/**
* @brief Initialize the TSC MSP.
* @param htsc: pointer to a TSC_HandleTypeDef structure that contains
* the configuration information for the specified TSC.
* @retval None
*/
__weak void HAL_TSC_MspInit(TSC_HandleTypeDef* htsc)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(htsc);
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_TSC_MspInit could be implemented in the user file.
*/
}
/**
* @brief DeInitialize the TSC MSP.
* @param htsc: pointer to a TSC_HandleTypeDef structure that contains
* the configuration information for the specified TSC.
* @retval None
*/
__weak void HAL_TSC_MspDeInit(TSC_HandleTypeDef* htsc)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(htsc);
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_TSC_MspDeInit could be implemented in the user file.
*/
}
/**
* @}
*/
/** @defgroup TSC_Exported_Functions_Group2 Input and Output operation functions
* @brief Input and Output operation functions
*
@verbatim
===============================================================================
##### IO Operation functions #####
===============================================================================
[..] This section provides functions allowing to:
(+) Start acquisition in polling mode.
(+) Start acquisition in interrupt mode.
(+) Stop conversion in polling mode.
(+) Stop conversion in interrupt mode.
(+) Poll for acquisition completed.
(+) Get group acquisition status.
(+) Get group acquisition value.
@endverbatim
* @{
*/
/**
* @brief Start the acquisition.
* @param htsc: pointer to a TSC_HandleTypeDef structure that contains
* the configuration information for the specified TSC.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_TSC_Start(TSC_HandleTypeDef* htsc)
{
/* Check the parameters */
assert_param(IS_TSC_ALL_INSTANCE(htsc->Instance));
/* Process locked */
__HAL_LOCK(htsc);
/* Change TSC state */
htsc->State = HAL_TSC_STATE_BUSY;
/* Clear interrupts */
__HAL_TSC_DISABLE_IT(htsc, (TSC_IT_EOA | TSC_IT_MCE));
/* Clear flags */
__HAL_TSC_CLEAR_FLAG(htsc, (TSC_FLAG_EOA | TSC_FLAG_MCE));
/* Set touch sensing IOs not acquired to the specified IODefaultMode */
if (htsc->Init.IODefaultMode == TSC_IODEF_OUT_PP_LOW)
{
__HAL_TSC_SET_IODEF_OUTPPLOW(htsc);
}
else
{
__HAL_TSC_SET_IODEF_INFLOAT(htsc);
}
/* Launch the acquisition */
__HAL_TSC_START_ACQ(htsc);
/* Process unlocked */
__HAL_UNLOCK(htsc);
/* Return function status */
return HAL_OK;
}
/**
* @brief Start the acquisition in interrupt mode.
* @param htsc: pointer to a TSC_HandleTypeDef structure that contains
* the configuration information for the specified TSC.
* @retval HAL status.
*/
HAL_StatusTypeDef HAL_TSC_Start_IT(TSC_HandleTypeDef* htsc)
{
/* Check the parameters */
assert_param(IS_TSC_ALL_INSTANCE(htsc->Instance));
assert_param(IS_TSC_MCE_IT(htsc->Init.MaxCountInterrupt));
/* Process locked */
__HAL_LOCK(htsc);
/* Change TSC state */
htsc->State = HAL_TSC_STATE_BUSY;
/* Enable end of acquisition interrupt */
__HAL_TSC_ENABLE_IT(htsc, TSC_IT_EOA);
/* Enable max count error interrupt (optional) */
if (htsc->Init.MaxCountInterrupt == ENABLE)
{
__HAL_TSC_ENABLE_IT(htsc, TSC_IT_MCE);
}
else
{
__HAL_TSC_DISABLE_IT(htsc, TSC_IT_MCE);
}
/* Clear flags */
__HAL_TSC_CLEAR_FLAG(htsc, (TSC_FLAG_EOA | TSC_FLAG_MCE));
/* Set touch sensing IOs not acquired to the specified IODefaultMode */
if (htsc->Init.IODefaultMode == TSC_IODEF_OUT_PP_LOW)
{
__HAL_TSC_SET_IODEF_OUTPPLOW(htsc);
}
else
{
__HAL_TSC_SET_IODEF_INFLOAT(htsc);
}
/* Launch the acquisition */
__HAL_TSC_START_ACQ(htsc);
/* Process unlocked */
__HAL_UNLOCK(htsc);
/* Return function status */
return HAL_OK;
}
/**
* @brief Stop the acquisition previously launched in polling mode.
* @param htsc: pointer to a TSC_HandleTypeDef structure that contains
* the configuration information for the specified TSC.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_TSC_Stop(TSC_HandleTypeDef* htsc)
{
/* Check the parameters */
assert_param(IS_TSC_ALL_INSTANCE(htsc->Instance));
/* Process locked */
__HAL_LOCK(htsc);
/* Stop the acquisition */
__HAL_TSC_STOP_ACQ(htsc);
/* Set touch sensing IOs in low power mode (output push-pull) */
__HAL_TSC_SET_IODEF_OUTPPLOW(htsc);
/* Clear flags */
__HAL_TSC_CLEAR_FLAG(htsc, (TSC_FLAG_EOA | TSC_FLAG_MCE));
/* Change TSC state */
htsc->State = HAL_TSC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(htsc);
/* Return function status */
return HAL_OK;
}
/**
* @brief Stop the acquisition previously launched in interrupt mode.
* @param htsc: pointer to a TSC_HandleTypeDef structure that contains
* the configuration information for the specified TSC.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_TSC_Stop_IT(TSC_HandleTypeDef* htsc)
{
/* Check the parameters */
assert_param(IS_TSC_ALL_INSTANCE(htsc->Instance));
/* Process locked */
__HAL_LOCK(htsc);
/* Stop the acquisition */
__HAL_TSC_STOP_ACQ(htsc);
/* Set touch sensing IOs in low power mode (output push-pull) */
__HAL_TSC_SET_IODEF_OUTPPLOW(htsc);
/* Disable interrupts */
__HAL_TSC_DISABLE_IT(htsc, (TSC_IT_EOA | TSC_IT_MCE));
/* Clear flags */
__HAL_TSC_CLEAR_FLAG(htsc, (TSC_FLAG_EOA | TSC_FLAG_MCE));
/* Change TSC state */
htsc->State = HAL_TSC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(htsc);
/* Return function status */
return HAL_OK;
}
/**
* @brief Start acquisition and wait until completion.
* @note There is no need of a timeout parameter as the max count error is already
* managed by the TSC peripheral.
* @param htsc: pointer to a TSC_HandleTypeDef structure that contains
* the configuration information for the specified TSC.
* @retval HAL state
*/
HAL_StatusTypeDef HAL_TSC_PollForAcquisition(TSC_HandleTypeDef* htsc)
{
/* Check the parameters */
assert_param(IS_TSC_ALL_INSTANCE(htsc->Instance));
/* Process locked */
__HAL_LOCK(htsc);
/* Check end of acquisition */
while (HAL_TSC_GetState(htsc) == HAL_TSC_STATE_BUSY)
{
/* The timeout (max count error) is managed by the TSC peripheral itself. */
}
/* Process unlocked */
__HAL_UNLOCK(htsc);
return HAL_OK;
}
/**
* @brief Get the acquisition status for a group.
* @param htsc: pointer to a TSC_HandleTypeDef structure that contains
* the configuration information for the specified TSC.
* @param gx_index: Index of the group
* @retval Group status
*/
TSC_GroupStatusTypeDef HAL_TSC_GroupGetStatus(TSC_HandleTypeDef* htsc, uint32_t gx_index)
{
/* Check the parameters */
assert_param(IS_TSC_ALL_INSTANCE(htsc->Instance));
assert_param(IS_TSC_GROUP_INDEX(gx_index));
/* Return the group status */
return(__HAL_TSC_GET_GROUP_STATUS(htsc, gx_index));
}
/**
* @brief Get the acquisition measure for a group.
* @param htsc: pointer to a TSC_HandleTypeDef structure that contains
* the configuration information for the specified TSC.
* @param gx_index: Index of the group
* @retval Acquisition measure
*/
uint32_t HAL_TSC_GroupGetValue(TSC_HandleTypeDef* htsc, uint32_t gx_index)
{
/* Check the parameters */
assert_param(IS_TSC_ALL_INSTANCE(htsc->Instance));
assert_param(IS_TSC_GROUP_INDEX(gx_index));
/* Return the group acquisition counter */
return htsc->Instance->IOGXCR[gx_index];
}
/**
* @}
*/
/** @defgroup TSC_Exported_Functions_Group3 Peripheral Control functions
* @brief Peripheral Control functions
*
@verbatim
===============================================================================
##### Peripheral Control functions #####
===============================================================================
[..] This section provides functions allowing to:
(+) Configure TSC IOs
(+) Discharge TSC IOs
@endverbatim
* @{
*/
/**
* @brief Configure TSC IOs.
* @param htsc: pointer to a TSC_HandleTypeDef structure that contains
* the configuration information for the specified TSC.
* @param config: pointer to the configuration structure.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_TSC_IOConfig(TSC_HandleTypeDef* htsc, TSC_IOConfigTypeDef* config)
{
/* Check the parameters */
assert_param(IS_TSC_ALL_INSTANCE(htsc->Instance));
/* Process locked */
__HAL_LOCK(htsc);
/* Stop acquisition */
__HAL_TSC_STOP_ACQ(htsc);
/* Disable Schmitt trigger hysteresis on all used TSC IOs */
htsc->Instance->IOHCR = (uint32_t)(~(config->ChannelIOs | config->ShieldIOs | config->SamplingIOs));
/* Set channel and shield IOs */
htsc->Instance->IOCCR = (config->ChannelIOs | config->ShieldIOs);
/* Set sampling IOs */
htsc->Instance->IOSCR = config->SamplingIOs;
/* Set groups to be acquired */
htsc->Instance->IOGCSR = TSC_extract_groups(config->ChannelIOs);
/* Process unlocked */
__HAL_UNLOCK(htsc);
/* Return function status */
return HAL_OK;
}
/**
* @brief Discharge TSC IOs.
* @param htsc: pointer to a TSC_HandleTypeDef structure that contains
* the configuration information for the specified TSC.
* @param choice: enable or disable
* @retval HAL status
*/
HAL_StatusTypeDef HAL_TSC_IODischarge(TSC_HandleTypeDef* htsc, uint32_t choice)
{
/* Check the parameters */
assert_param(IS_TSC_ALL_INSTANCE(htsc->Instance));
/* Process locked */
__HAL_LOCK(htsc);
if (choice == ENABLE)
{
__HAL_TSC_SET_IODEF_OUTPPLOW(htsc);
}
else
{
__HAL_TSC_SET_IODEF_INFLOAT(htsc);
}
/* Process unlocked */
__HAL_UNLOCK(htsc);
/* Return the group acquisition counter */
return HAL_OK;
}
/**
* @}
*/
/** @defgroup TSC_Exported_Functions_Group4 Peripheral State and Errors functions
* @brief Peripheral State and Errors functions
*
@verbatim
===============================================================================
##### State and Errors functions #####
===============================================================================
[..]
This subsection provides functions allowing to
(+) Get TSC state.
@endverbatim
* @{
*/
/**
* @brief Return the TSC handle state.
* @param htsc: pointer to a TSC_HandleTypeDef structure that contains
* the configuration information for the specified TSC.
* @retval HAL state
*/
HAL_TSC_StateTypeDef HAL_TSC_GetState(TSC_HandleTypeDef* htsc)
{
/* Check the parameters */
assert_param(IS_TSC_ALL_INSTANCE(htsc->Instance));
if (htsc->State == HAL_TSC_STATE_BUSY)
{
/* Check end of acquisition flag */
if (__HAL_TSC_GET_FLAG(htsc, TSC_FLAG_EOA) != RESET)
{
/* Check max count error flag */
if (__HAL_TSC_GET_FLAG(htsc, TSC_FLAG_MCE) != RESET)
{
/* Change TSC state */
htsc->State = HAL_TSC_STATE_ERROR;
}
else
{
/* Change TSC state */
htsc->State = HAL_TSC_STATE_READY;
}
}
}
/* Return TSC state */
return htsc->State;
}
/**
* @}
*/
/** @defgroup TSC_IRQ_Handler_and_Callbacks IRQ Handler and Callbacks
* @{
*/
/**
* @brief Handle TSC interrupt request.
* @param htsc: pointer to a TSC_HandleTypeDef structure that contains
* the configuration information for the specified TSC.
* @retval None
*/
void HAL_TSC_IRQHandler(TSC_HandleTypeDef* htsc)
{
/* Check the parameters */
assert_param(IS_TSC_ALL_INSTANCE(htsc->Instance));
/* Check if the end of acquisition occurred */
if (__HAL_TSC_GET_FLAG(htsc, TSC_FLAG_EOA) != RESET)
{
/* Clear EOA flag */
__HAL_TSC_CLEAR_FLAG(htsc, TSC_FLAG_EOA);
}
/* Check if max count error occurred */
if (__HAL_TSC_GET_FLAG(htsc, TSC_FLAG_MCE) != RESET)
{
/* Clear MCE flag */
__HAL_TSC_CLEAR_FLAG(htsc, TSC_FLAG_MCE);
/* Change TSC state */
htsc->State = HAL_TSC_STATE_ERROR;
/* Conversion completed callback */
HAL_TSC_ErrorCallback(htsc);
}
else
{
/* Change TSC state */
htsc->State = HAL_TSC_STATE_READY;
/* Conversion completed callback */
HAL_TSC_ConvCpltCallback(htsc);
}
}
/**
* @brief Acquisition completed callback in non-blocking mode.
* @param htsc: pointer to a TSC_HandleTypeDef structure that contains
* the configuration information for the specified TSC.
* @retval None
*/
__weak void HAL_TSC_ConvCpltCallback(TSC_HandleTypeDef* htsc)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(htsc);
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_TSC_ConvCpltCallback could be implemented in the user file.
*/
}
/**
* @brief Error callback in non-blocking mode.
* @param htsc: pointer to a TSC_HandleTypeDef structure that contains
* the configuration information for the specified TSC.
* @retval None
*/
__weak void HAL_TSC_ErrorCallback(TSC_HandleTypeDef* htsc)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(htsc);
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_TSC_ErrorCallback could be implemented in the user file.
*/
}
/**
* @}
*/
/**
* @}
*/
/* Private functions ---------------------------------------------------------*/
/** @defgroup TSC_Private_Functions Private Functions
* @{
*/
/**
* @brief Utility function used to set the acquired groups mask.
* @param iomask: Channels IOs mask
* @retval Acquired groups mask
*/
static uint32_t TSC_extract_groups(uint32_t iomask)
{
uint32_t groups = 0;
uint32_t idx;
for (idx = 0; idx < TSC_NB_OF_GROUPS; idx++)
{
if ((iomask & ((uint32_t)0x0F << (idx * 4))) != RESET)
{
groups |= ((uint32_t)1 << idx);
}
}
return groups;
}
/**
* @}
*/
#endif /* HAL_TSC_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
