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stm32f0xx_hal_irda.c
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/**
******************************************************************************
* @file stm32f0xx_hal_irda.c
* @author MCD Application Team
* @brief IRDA HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of the IrDA (Infrared Data Association) Peripheral
* (IRDA)
* + Initialization and de-initialization functions
* + IO operation functions
* + Peripheral State and Errors functions
* + Peripheral Control functions
*
@verbatim
==============================================================================
##### How to use this driver #####
==============================================================================
[..]
The IRDA HAL driver can be used as follows:
(#) Declare a IRDA_HandleTypeDef handle structure (eg. IRDA_HandleTypeDef hirda).
(#) Initialize the IRDA low level resources by implementing the HAL_IRDA_MspInit() API
in setting the associated USART or UART in IRDA mode:
(++) Enable the USARTx/UARTx interface clock.
(++) USARTx/UARTx pins configuration:
(+++) Enable the clock for the USARTx/UARTx GPIOs.
(+++) Configure these USARTx/UARTx pins (TX as alternate function pull-up, RX as alternate function Input).
(++) NVIC configuration if you need to use interrupt process (HAL_IRDA_Transmit_IT()
and HAL_IRDA_Receive_IT() APIs):
(+++) Configure the USARTx/UARTx interrupt priority.
(+++) Enable the NVIC USARTx/UARTx IRQ handle.
(+++) The specific IRDA interrupts (Transmission complete interrupt,
RXNE interrupt and Error Interrupts) will be managed using the macros
__HAL_IRDA_ENABLE_IT() and __HAL_IRDA_DISABLE_IT() inside the transmit and receive process.
(++) DMA Configuration if you need to use DMA process (HAL_IRDA_Transmit_DMA()
and HAL_IRDA_Receive_DMA() APIs):
(+++) Declare a DMA handle structure for the Tx/Rx channel.
(+++) Enable the DMAx interface clock.
(+++) Configure the declared DMA handle structure with the required Tx/Rx parameters.
(+++) Configure the DMA Tx/Rx channel.
(+++) Associate the initialized DMA handle to the IRDA DMA Tx/Rx handle.
(+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx/Rx channel.
(#) Program the Baud Rate, Word Length and Parity and Mode(Receiver/Transmitter),
the normal or low power mode and the clock prescaler in the hirda handle Init structure.
(#) Initialize the IRDA registers by calling the HAL_IRDA_Init() API:
(++) This API configures also the low level Hardware GPIO, CLOCK, CORTEX...etc)
by calling the customized HAL_IRDA_MspInit() API.
-@@- The specific IRDA interrupts (Transmission complete interrupt,
RXNE interrupt and Error Interrupts) will be managed using the macros
__HAL_IRDA_ENABLE_IT() and __HAL_IRDA_DISABLE_IT() inside the transmit and receive process.
(#) Three operation modes are available within this driver :
*** Polling mode IO operation ***
=================================
[..]
(+) Send an amount of data in blocking mode using HAL_IRDA_Transmit()
(+) Receive an amount of data in blocking mode using HAL_IRDA_Receive()
*** Interrupt mode IO operation ***
===================================
[..]
(+) Send an amount of data in non-blocking mode using HAL_IRDA_Transmit_IT()
(+) At transmission end of transfer HAL_IRDA_TxCpltCallback() is executed and user can
add his own code by customization of function pointer HAL_IRDA_TxCpltCallback()
(+) Receive an amount of data in non-blocking mode using HAL_IRDA_Receive_IT()
(+) At reception end of transfer HAL_IRDA_RxCpltCallback() is executed and user can
add his own code by customization of function pointer HAL_IRDA_RxCpltCallback()
(+) In case of transfer Error, HAL_IRDA_ErrorCallback() function is executed and user can
add his own code by customization of function pointer HAL_IRDA_ErrorCallback()
*** DMA mode IO operation ***
==============================
[..]
(+) Send an amount of data in non-blocking mode (DMA) using HAL_IRDA_Transmit_DMA()
(+) At transmission half of transfer HAL_IRDA_TxHalfCpltCallback() is executed and user can
add his own code by customization of function pointer HAL_IRDA_TxHalfCpltCallback()
(+) At transmission end of transfer HAL_IRDA_TxCpltCallback() is executed and user can
add his own code by customization of function pointer HAL_IRDA_TxCpltCallback()
(+) Receive an amount of data in non-blocking mode (DMA) using HAL_IRDA_Receive_DMA()
(+) At reception half of transfer HAL_IRDA_RxHalfCpltCallback() is executed and user can
add his own code by customization of function pointer HAL_IRDA_RxHalfCpltCallback()
(+) At reception end of transfer HAL_IRDA_RxCpltCallback() is executed and user can
add his own code by customization of function pointer HAL_IRDA_RxCpltCallback()
(+) In case of transfer Error, HAL_IRDA_ErrorCallback() function is executed and user can
add his own code by customization of function pointer HAL_IRDA_ErrorCallback()
*** IRDA HAL driver macros list ***
====================================
[..]
Below the list of most used macros in IRDA HAL driver.
(+) __HAL_IRDA_ENABLE: Enable the IRDA peripheral
(+) __HAL_IRDA_DISABLE: Disable the IRDA peripheral
(+) __HAL_IRDA_GET_FLAG : Check whether the specified IRDA flag is set or not
(+) __HAL_IRDA_CLEAR_FLAG : Clear the specified IRDA pending flag
(+) __HAL_IRDA_ENABLE_IT: Enable the specified IRDA interrupt
(+) __HAL_IRDA_DISABLE_IT: Disable the specified IRDA interrupt
(+) __HAL_IRDA_GET_IT_SOURCE: Check whether or not the specified IRDA interrupt is enabled
[..]
(@) You can refer to the IRDA HAL driver header file for more useful macros
@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.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f0xx_hal.h"
#if !defined(STM32F030x6) && !defined(STM32F030x8) && !defined(STM32F070x6) && !defined(STM32F070xB) && !defined(STM32F030xC)
/** @addtogroup STM32F0xx_HAL_Driver
* @{
*/
/** @defgroup IRDA IRDA
* @brief HAL IRDA module driver
* @{
*/
#ifdef HAL_IRDA_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/** @defgroup IRDA_Private_Constants IRDA Private Constants
* @{
*/
#define IRDA_TEACK_REACK_TIMEOUT 1000U /*!< IRDA TX or RX enable acknowledge time-out value */
#define IRDA_CR1_FIELDS ((uint32_t)(USART_CR1_M | USART_CR1_PCE \
| USART_CR1_PS | USART_CR1_TE | USART_CR1_RE)) /*!< UART or USART CR1 fields of parameters set by IRDA_SetConfig API */
/**
* @}
*/
/* Private macros ------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/** @addtogroup IRDA_Private_Functions
* @{
*/
static HAL_StatusTypeDef IRDA_SetConfig(IRDA_HandleTypeDef *hirda);
static HAL_StatusTypeDef IRDA_CheckIdleState(IRDA_HandleTypeDef *hirda);
static HAL_StatusTypeDef IRDA_WaitOnFlagUntilTimeout(IRDA_HandleTypeDef *hirda, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout);
static void IRDA_EndTxTransfer(IRDA_HandleTypeDef *hirda);
static void IRDA_EndRxTransfer(IRDA_HandleTypeDef *hirda);
static void IRDA_DMATransmitCplt(DMA_HandleTypeDef *hdma);
static void IRDA_DMATransmitHalfCplt(DMA_HandleTypeDef *hdma);
static void IRDA_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
static void IRDA_DMAReceiveHalfCplt(DMA_HandleTypeDef *hdma);
static void IRDA_DMAError(DMA_HandleTypeDef *hdma);
static void IRDA_DMAAbortOnError(DMA_HandleTypeDef *hdma);
static void IRDA_DMATxAbortCallback(DMA_HandleTypeDef *hdma);
static void IRDA_DMARxAbortCallback(DMA_HandleTypeDef *hdma);
static void IRDA_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma);
static void IRDA_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma);
static HAL_StatusTypeDef IRDA_Transmit_IT(IRDA_HandleTypeDef *hirda);
static HAL_StatusTypeDef IRDA_EndTransmit_IT(IRDA_HandleTypeDef *hirda);
static HAL_StatusTypeDef IRDA_Receive_IT(IRDA_HandleTypeDef *hirda);
/**
* @}
*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup IRDA_Exported_Functions IRDA Exported Functions
* @{
*/
/** @defgroup IRDA_Exported_Functions_Group1 Initialization and de-initialization functions
* @brief Initialization and Configuration functions
*
@verbatim
==============================================================================
##### Initialization and Configuration functions #####
==============================================================================
[..]
This subsection provides a set of functions allowing to initialize the USARTx
in asynchronous IRDA mode.
(+) For the asynchronous mode only these parameters can be configured:
(++) Baud Rate
(++) Word Length
(++) Parity
(++) Power mode
(++) Prescaler setting
(++) Receiver/transmitter modes
[..]
The HAL_IRDA_Init() API follows the USART asynchronous configuration procedures
(details for the procedures are available in reference manual).
@endverbatim
* @{
*/
/*
Additional Table: If the parity is enabled, then the MSB bit of the data written
in the data register is transmitted but is changed by the parity bit.
According to device capability (support or not of 7-bit word length),
frame length is either defined by the M bit (8-bits or 9-bits)
or by the M1 and M0 bits (7-bit, 8-bit or 9-bit).
Possible IRDA frame formats are as listed in the following table:
Table 1. IRDA frame format.
+-----------------------------------------------------------------------+
| M bit | PCE bit | IRDA frame |
|-------------------|-----------|---------------------------------------|
| 0 | 0 | | SB | 8-bit data | STB | |
|-------------------|-----------|---------------------------------------|
| 0 | 1 | | SB | 7-bit data | PB | STB | |
|-------------------|-----------|---------------------------------------|
| 1 | 0 | | SB | 9-bit data | STB | |
|-------------------|-----------|---------------------------------------|
| 1 | 1 | | SB | 8-bit data | PB | STB | |
+-----------------------------------------------------------------------+
| M1 bit | M0 bit | PCE bit | IRDA frame |
|---------|---------|-----------|---------------------------------------|
| 0 | 0 | 0 | | SB | 8 bit data | STB | |
|---------|---------|-----------|---------------------------------------|
| 0 | 0 | 1 | | SB | 7 bit data | PB | STB | |
|---------|---------|-----------|---------------------------------------|
| 0 | 1 | 0 | | SB | 9 bit data | STB | |
|---------|---------|-----------|---------------------------------------|
| 0 | 1 | 1 | | SB | 8 bit data | PB | STB | |
|---------|---------|-----------|---------------------------------------|
| 1 | 0 | 0 | | SB | 7 bit data | STB | |
|---------|---------|-----------|---------------------------------------|
| 1 | 0 | 1 | | SB | 6 bit data | PB | STB | |
+-----------------------------------------------------------------------+
*/
/**
* @brief Initialize the IRDA mode according to the specified
* parameters in the IRDA_InitTypeDef and initialize the associated handle.
* @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Init(IRDA_HandleTypeDef *hirda)
{
/* Check the IRDA handle allocation */
if(hirda == NULL)
{
return HAL_ERROR;
}
/* Check the USART/UART associated to the IRDA handle */
assert_param(IS_IRDA_INSTANCE(hirda->Instance));
if(hirda->gState == HAL_IRDA_STATE_RESET)
{
/* Allocate lock resource and initialize it */
hirda->Lock = HAL_UNLOCKED;
/* Init the low level hardware : GPIO, CLOCK */
HAL_IRDA_MspInit(hirda);
}
hirda->gState = HAL_IRDA_STATE_BUSY;
/* Disable the Peripheral to update the configuration registers */
__HAL_IRDA_DISABLE(hirda);
/* Set the IRDA Communication parameters */
if (IRDA_SetConfig(hirda) == HAL_ERROR)
{
return HAL_ERROR;
}
/* In IRDA mode, the following bits must be kept cleared:
- LINEN, STOP and CLKEN bits in the USART_CR2 register,
- SCEN and HDSEL bits in the USART_CR3 register.*/
CLEAR_BIT(hirda->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN | USART_CR2_STOP));
CLEAR_BIT(hirda->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL));
/* set the UART/USART in IRDA mode */
hirda->Instance->CR3 |= USART_CR3_IREN;
/* Enable the Peripheral */
__HAL_IRDA_ENABLE(hirda);
/* TEACK and/or REACK to check before moving hirda->gState and hirda->RxState to Ready */
return (IRDA_CheckIdleState(hirda));
}
/**
* @brief DeInitialize the IRDA peripheral.
* @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_DeInit(IRDA_HandleTypeDef *hirda)
{
/* Check the IRDA handle allocation */
if(hirda == NULL)
{
return HAL_ERROR;
}
/* Check the USART/UART associated to the IRDA handle */
assert_param(IS_IRDA_INSTANCE(hirda->Instance));
hirda->gState = HAL_IRDA_STATE_BUSY;
/* DeInit the low level hardware */
HAL_IRDA_MspDeInit(hirda);
/* Disable the Peripheral */
__HAL_IRDA_DISABLE(hirda);
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
hirda->gState = HAL_IRDA_STATE_RESET;
hirda->RxState = HAL_IRDA_STATE_RESET;
/* Process Unlock */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
/**
* @brief Initialize the IRDA MSP.
* @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @retval None
*/
__weak void HAL_IRDA_MspInit(IRDA_HandleTypeDef *hirda)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(hirda);
/* NOTE: This function should not be modified, when the callback is needed,
the HAL_IRDA_MspInit can be implemented in the user file
*/
}
/**
* @brief DeInitialize the IRDA MSP.
* @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @retval None
*/
__weak void HAL_IRDA_MspDeInit(IRDA_HandleTypeDef *hirda)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(hirda);
/* NOTE: This function should not be modified, when the callback is needed,
the HAL_IRDA_MspDeInit can be implemented in the user file
*/
}
/**
* @}
*/
/** @defgroup IRDA_Exported_Functions_Group2 IO operation functions
* @brief IRDA Transmit and Receive functions
*
@verbatim
===============================================================================
##### IO operation functions #####
===============================================================================
[..]
This subsection provides a set of functions allowing to manage the IRDA data transfers.
[..]
IrDA is a half duplex communication protocol. If the Transmitter is busy, any data
on the IrDA receive line will be ignored by the IrDA decoder and if the Receiver
is busy, data on the TX from the USART to IrDA will not be encoded by IrDA.
While receiving data, transmission should be avoided as the data to be transmitted
could be corrupted.
(#) There are two mode of transfer:
(++) Blocking mode: the communication is performed in polling mode.
The HAL status of all data processing is returned by the same function
after finishing transfer.
(++) Non-Blocking mode: the communication is performed using Interrupts
or DMA, these API's return the HAL status.
The end of the data processing will be indicated through the
dedicated IRDA IRQ when using Interrupt mode or the DMA IRQ when
using DMA mode.
The HAL_IRDA_TxCpltCallback(), HAL_IRDA_RxCpltCallback() user callbacks
will be executed respectively at the end of the Transmit or Receive process
The HAL_IRDA_ErrorCallback() user callback will be executed when a communication error is detected
(#) Blocking mode APIs are :
(++) HAL_IRDA_Transmit()
(++) HAL_IRDA_Receive()
(#) Non Blocking mode APIs with Interrupt are :
(++) HAL_IRDA_Transmit_IT()
(++) HAL_IRDA_Receive_IT()
(++) HAL_IRDA_IRQHandler()
(#) Non Blocking mode functions with DMA are :
(++) HAL_IRDA_Transmit_DMA()
(++) HAL_IRDA_Receive_DMA()
(++) HAL_IRDA_DMAPause()
(++) HAL_IRDA_DMAResume()
(++) HAL_IRDA_DMAStop()
(#) A set of Transfer Complete Callbacks are provided in Non Blocking mode:
(++) HAL_IRDA_TxHalfCpltCallback()
(++) HAL_IRDA_TxCpltCallback()
(++) HAL_IRDA_RxHalfCpltCallback()
(++) HAL_IRDA_RxCpltCallback()
(++) HAL_IRDA_ErrorCallback()
(#) Non-Blocking mode transfers could be aborted using Abort API's :
(++) HAL_IRDA_Abort()
(++) HAL_IRDA_AbortTransmit()
(++) HAL_IRDA_AbortReceive()
(++) HAL_IRDA_Abort_IT()
(++) HAL_IRDA_AbortTransmit_IT()
(++) HAL_IRDA_AbortReceive_IT()
(#) For Abort services based on interrupts (HAL_IRDA_Abortxxx_IT), a set of Abort Complete Callbacks are provided:
(++) HAL_IRDA_AbortCpltCallback()
(++) HAL_IRDA_AbortTransmitCpltCallback()
(++) HAL_IRDA_AbortReceiveCpltCallback()
(#) In Non-Blocking mode transfers, possible errors are split into 2 categories.
Errors are handled as follows :
(++) Error is considered as Recoverable and non blocking : Transfer could go till end, but error severity is
to be evaluated by user : this concerns Frame Error, Parity Error or Noise Error in Interrupt mode reception .
Received character is then retrieved and stored in Rx buffer, Error code is set to allow user to identify error type,
and HAL_IRDA_ErrorCallback() user callback is executed. Transfer is kept ongoing on IRDA side.
If user wants to abort it, Abort services should be called by user.
(++) Error is considered as Blocking : Transfer could not be completed properly and is aborted.
This concerns Overrun Error In Interrupt mode reception and all errors in DMA mode.
Error code is set to allow user to identify error type, and HAL_IRDA_ErrorCallback() user callback is executed.
@endverbatim
* @{
*/
/**
* @brief Send an amount of data in blocking mode.
* @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @param pData Pointer to data buffer.
* @param Size Amount of data to be sent.
* @param Timeout Specify timeout value.
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
* address of user data buffer containing data to be sent, should be aligned on a half word frontier (16 bits)
* (as sent data will be handled using u16 pointer cast). Depending on compilation chain,
* use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Transmit(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
uint16_t* tmp;
uint32_t tickstart = 0U;
/* Check that a Tx process is not already ongoing */
if(hirda->gState == HAL_IRDA_STATE_READY)
{
if((pData == NULL) || (Size == 0U))
{
return HAL_ERROR;
}
/* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
should be aligned on a u16 frontier, as data to be filled into TDR will be
handled through a u16 cast. */
if ((hirda->Init.WordLength == UART_WORDLENGTH_9B) && (hirda->Init.Parity == UART_PARITY_NONE))
{
if((((uint32_t)pData)&1U) != 0U)
{
return HAL_ERROR;
}
}
/* Process Locked */
__HAL_LOCK(hirda);
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
hirda->gState = HAL_IRDA_STATE_BUSY_TX;
/* Init tickstart for timeout managment*/
tickstart = HAL_GetTick();
hirda->TxXferSize = Size;
hirda->TxXferCount = Size;
while(hirda->TxXferCount > 0U)
{
hirda->TxXferCount--;
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
if ((hirda->Init.WordLength == IRDA_WORDLENGTH_9B) && (hirda->Init.Parity == IRDA_PARITY_NONE))
{
tmp = (uint16_t*) pData;
hirda->Instance->TDR = (*tmp & (uint16_t)0x01FFU);
pData += 2;
}
else
{
hirda->Instance->TDR = (*pData++ & (uint8_t)0xFFU);
}
}
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
/* At end of Tx process, restore hirda->gState to Ready */
hirda->gState = HAL_IRDA_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Receive an amount of data in blocking mode.
* @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @param pData Pointer to data buffer.
* @param Size Amount of data to be received.
* @param Timeout Specify timeout value.
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
* address of user data buffer for storing data to be received, should be aligned on a half word frontier (16 bits)
* (as received data will be handled using u16 pointer cast). Depending on compilation chain,
* use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Receive(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
uint16_t* tmp;
uint16_t uhMask;
uint32_t tickstart = 0;
/* Check that a Rx process is not already ongoing */
if(hirda->RxState == HAL_IRDA_STATE_READY)
{
if((pData == NULL) || (Size == 0U))
{
return HAL_ERROR;
}
/* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
should be aligned on a u16 frontier, as data to be received from RDR will be
handled through a u16 cast. */
if ((hirda->Init.WordLength == UART_WORDLENGTH_9B) && (hirda->Init.Parity == UART_PARITY_NONE))
{
if((((uint32_t)pData)&1U) != 0U)
{
return HAL_ERROR;
}
}
/* Process Locked */
__HAL_LOCK(hirda);
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
hirda->RxState = HAL_IRDA_STATE_BUSY_RX;
/* Init tickstart for timeout managment*/
tickstart = HAL_GetTick();
hirda->RxXferSize = Size;
hirda->RxXferCount = Size;
/* Computation of the mask to apply to RDR register
of the UART associated to the IRDA */
IRDA_MASK_COMPUTATION(hirda);
uhMask = hirda->Mask;
/* Check data remaining to be received */
while(hirda->RxXferCount > 0U)
{
hirda->RxXferCount--;
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
if ((hirda->Init.WordLength == IRDA_WORDLENGTH_9B) && (hirda->Init.Parity == IRDA_PARITY_NONE))
{
tmp = (uint16_t*) pData ;
*tmp = (uint16_t)(hirda->Instance->RDR & uhMask);
pData +=2;
}
else
{
*pData++ = (uint8_t)(hirda->Instance->RDR & (uint8_t)uhMask);
}
}
/* At end of Rx process, restore hirda->RxState to Ready */
hirda->RxState = HAL_IRDA_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Send an amount of data in interrupt mode.
* @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @param pData Pointer to data buffer.
* @param Size Amount of data to be sent.
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
* address of user data buffer containing data to be sent, should be aligned on a half word frontier (16 bits)
* (as sent data will be handled using u16 pointer cast). Depending on compilation chain,
* use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Transmit_IT(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size)
{
/* Check that a Tx process is not already ongoing */
if(hirda->gState == HAL_IRDA_STATE_READY)
{
if((pData == NULL) || (Size == 0U))
{
return HAL_ERROR;
}
/* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
should be aligned on a u16 frontier, as data to be filled into TDR will be
handled through a u16 cast. */
if ((hirda->Init.WordLength == UART_WORDLENGTH_9B) && (hirda->Init.Parity == UART_PARITY_NONE))
{
if((((uint32_t)pData)&1U) != 0U)
{
return HAL_ERROR;
}
}
/* Process Locked */
__HAL_LOCK(hirda);
hirda->pTxBuffPtr = pData;
hirda->TxXferSize = Size;
hirda->TxXferCount = Size;
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
hirda->gState = HAL_IRDA_STATE_BUSY_TX;
/* Process Unlocked */
__HAL_UNLOCK(hirda);
/* Enable the IRDA Transmit Data Register Empty Interrupt */
SET_BIT(hirda->Instance->CR1, USART_CR1_TXEIE);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Receive an amount of data in interrupt mode.
* @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @param pData Pointer to data buffer.
* @param Size Amount of data to be received.
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
* address of user data buffer for storing data to be received, should be aligned on a half word frontier (16 bits)
* (as received data will be handled using u16 pointer cast). Depending on compilation chain,
* use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Receive_IT(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size)
{
/* Check that a Rx process is not already ongoing */
if(hirda->RxState == HAL_IRDA_STATE_READY)
{
if((pData == NULL) || (Size == 0U))
{
return HAL_ERROR;
}
/* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
should be aligned on a u16 frontier, as data to be received from RDR will be
handled through a u16 cast. */
if ((hirda->Init.WordLength == UART_WORDLENGTH_9B) && (hirda->Init.Parity == UART_PARITY_NONE))
{
if((((uint32_t)pData)&1U) != 0U)
{
return HAL_ERROR;
}
}
/* Process Locked */
__HAL_LOCK(hirda);
hirda->pRxBuffPtr = pData;
hirda->RxXferSize = Size;
hirda->RxXferCount = Size;
/* Computation of the mask to apply to the RDR register
of the UART associated to the IRDA */
IRDA_MASK_COMPUTATION(hirda);
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
hirda->RxState = HAL_IRDA_STATE_BUSY_RX;
/* Process Unlocked */
__HAL_UNLOCK(hirda);
/* Enable the IRDA Parity Error and Data Register not empty Interrupts */
SET_BIT(hirda->Instance->CR1, USART_CR1_PEIE| USART_CR1_RXNEIE);
/* Enable the IRDA Error Interrupt: (Frame error, noise error, overrun error) */
SET_BIT(hirda->Instance->CR3, USART_CR3_EIE);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Send an amount of data in DMA mode.
* @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @param pData pointer to data buffer.
* @param Size amount of data to be sent.
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
* address of user data buffer containing data to be sent, should be aligned on a half word frontier (16 bits)
* (as sent data will be handled by DMA from halfword frontier). Depending on compilation chain,
* use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Transmit_DMA(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size)
{
/* Check that a Tx process is not already ongoing */
if(hirda->gState == HAL_IRDA_STATE_READY)
{
if((pData == NULL) || (Size == 0U))
{
return HAL_ERROR;
}
/* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
should be aligned on a u16 frontier, as data copy into TDR will be
handled by DMA from a u16 frontier. */
if ((hirda->Init.WordLength == UART_WORDLENGTH_9B) && (hirda->Init.Parity == UART_PARITY_NONE))
{
if((((uint32_t)pData)&1U) != 0U)
{
return HAL_ERROR;
}
}
/* Process Locked */
__HAL_LOCK(hirda);
hirda->pTxBuffPtr = pData;
hirda->TxXferSize = Size;
hirda->TxXferCount = Size;
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
hirda->gState = HAL_IRDA_STATE_BUSY_TX;
/* Set the IRDA DMA transfer complete callback */
hirda->hdmatx->XferCpltCallback = IRDA_DMATransmitCplt;
/* Set the IRDA DMA half transfer complete callback */
hirda->hdmatx->XferHalfCpltCallback = IRDA_DMATransmitHalfCplt;
/* Set the DMA error callback */
hirda->hdmatx->XferErrorCallback = IRDA_DMAError;
/* Set the DMA abort callback */
hirda->hdmatx->XferAbortCallback = NULL;
/* Enable the IRDA transmit DMA channel */
HAL_DMA_Start_IT(hirda->hdmatx, (uint32_t)hirda->pTxBuffPtr, (uint32_t)&hirda->Instance->TDR, Size);
/* Clear the TC flag in the ICR register */
__HAL_IRDA_CLEAR_FLAG(hirda, IRDA_CLEAR_TCF);
/* Process Unlocked */
__HAL_UNLOCK(hirda);
/* Enable the DMA transfer for transmit request by setting the DMAT bit
in the USART CR3 register */
SET_BIT(hirda->Instance->CR3, USART_CR3_DMAT);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Receive an amount of data in DMA mode.
* @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @param pData Pointer to data buffer.
* @param Size Amount of data to be received.
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
* address of user data buffer for storing data to be received, should be aligned on a half word frontier (16 bits)
* (as received data will be handled by DMA from halfword frontier). Depending on compilation chain,
* use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Receive_DMA(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size)
{
/* Check that a Rx process is not already ongoing */
if(hirda->RxState == HAL_IRDA_STATE_READY)
{
if((pData == NULL) || (Size == 0U))
{
return HAL_ERROR;
}
/* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
should be aligned on a u16 frontier, as data copy from RDR will be
handled by DMA from a u16 frontier. */
if ((hirda->Init.WordLength == UART_WORDLENGTH_9B) && (hirda->Init.Parity == UART_PARITY_NONE))
{
if((((uint32_t)pData)&1U) != 0U)
{
return HAL_ERROR;
}
}
/* Process Locked */
__HAL_LOCK(hirda);
hirda->pRxBuffPtr = pData;
hirda->RxXferSize = Size;
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
hirda->RxState = HAL_IRDA_STATE_BUSY_RX;
/* Set the IRDA DMA transfer complete callback */
hirda->hdmarx->XferCpltCallback = IRDA_DMAReceiveCplt;
/* Set the IRDA DMA half transfer complete callback */
hirda->hdmarx->XferHalfCpltCallback = IRDA_DMAReceiveHalfCplt;
/* Set the DMA error callback */
hirda->hdmarx->XferErrorCallback = IRDA_DMAError;
/* Set the DMA abort callback */
hirda->hdmarx->XferAbortCallback = NULL;
/* Enable the DMA channel */
HAL_DMA_Start_IT(hirda->hdmarx, (uint32_t)&hirda->Instance->RDR, (uint32_t)hirda->pRxBuffPtr, Size);
/* Process Unlocked */
__HAL_UNLOCK(hirda);
/* Enable the UART Parity Error Interrupt */
SET_BIT(hirda->Instance->CR1, USART_CR1_PEIE);
/* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
SET_BIT(hirda->Instance->CR3, USART_CR3_EIE);
/* Enable the DMA transfer for the receiver request by setting the DMAR bit
in the USART CR3 register */
SET_BIT(hirda->Instance->CR3, USART_CR3_DMAR);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Pause the DMA Transfer.
* @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_DMAPause(IRDA_HandleTypeDef *hirda)
{
/* Process Locked */
__HAL_LOCK(hirda);
if ((hirda->gState == HAL_IRDA_STATE_BUSY_TX) &&
(HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAT)))
{
/* Disable the IRDA DMA Tx request */
CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAT);
}
if ((hirda->RxState == HAL_IRDA_STATE_BUSY_RX) &&
(HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAR)))
{
/* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
CLEAR_BIT(hirda->Instance->CR1, USART_CR1_PEIE);
CLEAR_BIT(hirda->Instance->CR3, USART_CR3_EIE);
/* Disable the IRDA DMA Rx request */
CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAR);
}
/* Process Unlocked */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
/**
* @brief Resume the DMA Transfer.
* @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified UART module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_DMAResume(IRDA_HandleTypeDef *hirda)
{
/* Process Locked */
__HAL_LOCK(hirda);
if(hirda->gState == HAL_IRDA_STATE_BUSY_TX)
{
/* Enable the IRDA DMA Tx request */
SET_BIT(hirda->Instance->CR3, USART_CR3_DMAT);
}
if(hirda->RxState == HAL_IRDA_STATE_BUSY_RX)
{
/* Clear the Overrun flag before resuming the Rx transfer*/
__HAL_IRDA_CLEAR_OREFLAG(hirda);
/* Reenable PE and ERR (Frame error, noise error, overrun error) interrupts */
SET_BIT(hirda->Instance->CR1, USART_CR1_PEIE);
SET_BIT(hirda->Instance->CR3, USART_CR3_EIE);
/* Enable the IRDA DMA Rx request */
SET_BIT(hirda->Instance->CR3, USART_CR3_DMAR);
}
/* Process Unlocked */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
/**
* @brief Stop the DMA Transfer.
* @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified UART module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_DMAStop(IRDA_HandleTypeDef *hirda)
{
/* The Lock is not implemented on this API to allow the user application
to call the HAL IRDA API under callbacks HAL_IRDA_TxCpltCallback() / HAL_IRDA_RxCpltCallback() /