ref: 5a045db8d5f5f89a707a667c134919fe7f0608ff
dir: /demos/stm32f429_disco/stm/stm32f4_spl/src/stm32f4xx_hal_irda.c/
/**
******************************************************************************
* @file stm32f4xx_hal_irda.c
* @author MCD Application Team
* @version V1.0.0
* @date 18-February-2014
* @brief IRDA HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of the IrDA SIR ENDEC block (IrDA):
* + Initialization and de-initialization functions
* + IO operation functions
* + Peripheral State and Errors functions
*
@verbatim
==============================================================================
##### How to use this driver #####
==============================================================================
[..]
The IRDA HAL driver can be used as follow:
(#) Declare a IRDA_HandleTypeDef handle structure.
(#) Initialize the IRDA low level resources by implement the HAL_IRDA_MspInit() API:
(##) Enable the USARTx interface clock.
(##) IRDA pins configuration:
(+++) Enable the clock for the IRDA GPIOs.
(+++) Configure these IRDA pins as alternate function pull-up.
(##) NVIC configuration if you need to use interrupt process (HAL_IRDA_Transmit_IT()
and HAL_IRDA_Receive_IT() APIs):
(+++) Configure the USARTx interrupt priority.
(+++) Enable the NVIC USART IRQ handle.
(##) 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 stream.
(+++) Enable the DMAx interface clock.
(+++) Configure the declared DMA handle structure with the required Tx/Rx parameters.
(+++) Configure the DMA Tx/Rx Stream.
(+++) Associate the initilalized 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 Stream.
(#) Program the Baud Rate, Word Length, Parity, IrDA Mode, Prescaler
and Mode(Receiver/Transmitter) in the hirda 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 customed 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 mode of operations 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 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 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 : Checks whether the specified IRDA flag is set or not
(+) __HAL_IRDA_CLEAR_FLAG : Clears the specified IRDA pending flag
(+) __HAL_IRDA_ENABLE_IT: Enables the specified IRDA interrupt
(+) __HAL_IRDA_DISABLE_IT: Disables the specified IRDA interrupt
(@) You can refer to the IRDA HAL driver header file for more useful macros
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT(c) 2014 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 "stm32f4xx_hal.h"
/** @addtogroup STM32F4xx_HAL_Driver
* @{
*/
/** @defgroup IRDA
* @brief HAL IRDA module driver
* @{
*/
#ifdef HAL_IRDA_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define IRDA_TIMEOUT_VALUE 22000
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
static void IRDA_SetConfig (IRDA_HandleTypeDef *hirda);
static HAL_StatusTypeDef IRDA_Transmit_IT(IRDA_HandleTypeDef *hirda);
static HAL_StatusTypeDef IRDA_Receive_IT(IRDA_HandleTypeDef *hirda);
static void IRDA_DMATransmitCplt(DMA_HandleTypeDef *hdma);
static void IRDA_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
static void IRDA_DMAError(DMA_HandleTypeDef *hdma);
static HAL_StatusTypeDef IRDA_WaitOnFlagUntilTimeout(IRDA_HandleTypeDef *hirda, uint32_t Flag, FlagStatus Status, uint32_t Timeout);
/* Private functions ---------------------------------------------------------*/
/** @defgroup IRDA_Private_Functions
* @{
*/
/** @defgroup IRDA_Group1 IrDA 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 or the UARTy
in IrDA mode.
(+) For the asynchronous mode only these parameters can be configured:
(++) BaudRate
(++) WordLength
(++) Parity: 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.
Depending on the frame length defined by the M bit (8-bits or 9-bits),
the possible IRDA frame formats are as listed in the following table:
+-------------------------------------------------------------+
| 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 | |
+-------------------------------------------------------------+
(++) Prescaler: A pulse of width less than two and greater than one PSC period(s) may or may
not be rejected. The receiver set up time should be managed by software. The IrDA physical layer
specification specifies a minimum of 10 ms delay between transmission and
reception (IrDA is a half duplex protocol).
(++) Mode: Receiver/transmitter modes
(++) IrDAMode: the IrDA can operate in the Normal mode or in the Low power mode.
[..]
The HAL_IRDA_Init() API follows IRDA configuration procedures (details for the procedures
are available in reference manual).
@endverbatim
* @{
*/
/**
* @brief Initializes the IRDA mode according to the specified
* parameters in the IRDA_InitTypeDef and create the associated handle.
* @param hirda: IRDA handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Init(IRDA_HandleTypeDef *hirda)
{
/* Check the IRDA handle allocation */
if(hirda == NULL)
{
return HAL_ERROR;
}
/* Check the IRDA instance parameters */
assert_param(IS_IRDA_INSTANCE(hirda->Instance));
/* Check the IRDA mode parameter in the IRDA handle */
assert_param(IS_IRDA_POWERMODE(hirda->Init.IrDAMode));
if(hirda->State == HAL_IRDA_STATE_RESET)
{
/* Init the low level hardware : GPIO, CLOCK, CORTEX...etc */
HAL_IRDA_MspInit(hirda);
}
hirda->State = HAL_IRDA_STATE_BUSY;
/* Disable the IRDA peripheral */
__IRDA_DISABLE(hirda);
/* Set the IRDA communication parameters */
IRDA_SetConfig(hirda);
/* 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.*/
hirda->Instance->CR2 &= ~(USART_CR2_LINEN | USART_CR2_STOP | USART_CR2_CLKEN);
hirda->Instance->CR3 &= ~(USART_CR3_SCEN | USART_CR3_HDSEL);
/* Enable the IRDA peripheral */
__IRDA_ENABLE(hirda);
/* Set the prescaler */
MODIFY_REG(hirda->Instance->GTPR, USART_GTPR_PSC, hirda->Init.Prescaler);
/* Configure the IrDA mode */
MODIFY_REG(hirda->Instance->CR3, USART_CR3_IRLP, hirda->Init.IrDAMode);
/* Enable the IrDA mode by setting the IREN bit in the CR3 register */
hirda->Instance->CR3 |= USART_CR3_IREN;
/* Initialize the IRDA state*/
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
hirda->State= HAL_IRDA_STATE_READY;
return HAL_OK;
}
/**
* @brief DeInitializes the IRDA peripheral
* @param hirda: IRDA handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_DeInit(IRDA_HandleTypeDef *hirda)
{
/* Check the IRDA handle allocation */
if(hirda == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_IRDA_INSTANCE(hirda->Instance));
hirda->State = HAL_IRDA_STATE_BUSY;
/* DeInit the low level hardware */
HAL_IRDA_MspDeInit(hirda);
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
hirda->State = HAL_IRDA_STATE_RESET;
/* Release Lock */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
/**
* @brief IRDA MSP Init.
* @param hirda: IRDA handle
* @retval None
*/
__weak void HAL_IRDA_MspInit(IRDA_HandleTypeDef *hirda)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_IRDA_MspInit could be implenetd in the user file
*/
}
/**
* @brief IRDA MSP DeInit.
* @param hirda: IRDA handle
* @retval None
*/
__weak void HAL_IRDA_MspDeInit(IRDA_HandleTypeDef *hirda)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_IRDA_MspDeInit could be implenetd in the user file
*/
}
/**
* @}
*/
/** @defgroup IRDA_Group2 IO operation functions
* @brief IRDA Transmit/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.
(++) No-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 respectivelly 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 API's are :
(++) HAL_IRDA_Transmit()
(++) HAL_IRDA_Receive()
(#) Non-Blocking mode API's with Interrupt are :
(++) HAL_IRDA_Transmit_IT()
(++) HAL_IRDA_Receive_IT()
(++) HAL_IRDA_IRQHandler()
(#) No-Blocking mode functions with DMA are :
(++) HAL_IRDA_Transmit_DMA()
(++) HAL_IRDA_Receive_DMA()
(#) A set of Transfer Complete Callbacks are provided in No_Blocking mode:
(++) HAL_IRDA_TxCpltCallback()
(++) HAL_IRDA_RxCpltCallback()
(++) HAL_IRDA_ErrorCallback()
@endverbatim
* @{
*/
/**
* @brief Sends an amount of data in blocking mode.
* @param hirda: IRDA handle
* @param pData: Pointer to data buffer
* @param Size: Amount of data to be sent
* @param Timeout: Specify timeout value
* @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 tmp1 = 0;
tmp1 = hirda->State;
if((tmp1 == HAL_IRDA_STATE_READY) || (tmp1 == HAL_IRDA_STATE_BUSY_RX))
{
if((pData == NULL) || (Size == 0))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(hirda);
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
if(hirda->State == HAL_IRDA_STATE_BUSY_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_TX_RX;
}
else
{
hirda->State = HAL_IRDA_STATE_BUSY_TX;
}
hirda->TxXferSize = Size;
hirda->TxXferCount = Size;
while(hirda->TxXferCount > 0)
{
hirda->TxXferCount--;
if(hirda->Init.WordLength == IRDA_WORDLENGTH_9B)
{
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TXE, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
tmp = (uint16_t*) pData;
hirda->Instance->DR = (*tmp & (uint16_t)0x01FF);
if(hirda->Init.Parity == IRDA_PARITY_NONE)
{
pData +=2;
}
else
{
pData +=1;
}
}
else
{
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TXE, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
hirda->Instance->DR = (*pData++ & (uint8_t)0xFF);
}
}
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TC, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
if(hirda->State == HAL_IRDA_STATE_BUSY_TX_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_RX;
}
else
{
hirda->State = 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: IRDA handle
* @param pData: Pointer to data buffer
* @param Size: Amount of data to be received
* @param Timeout: Specify timeout value
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Receive(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
uint16_t* tmp;
uint32_t tmp1 = 0;
tmp1 = hirda->State;
if((tmp1 == HAL_IRDA_STATE_READY) || (tmp1 == HAL_IRDA_STATE_BUSY_TX))
{
if((pData == NULL) || (Size == 0))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(hirda);
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
if(hirda->State == HAL_IRDA_STATE_BUSY_TX)
{
hirda->State = HAL_IRDA_STATE_BUSY_TX_RX;
}
else
{
hirda->State = HAL_IRDA_STATE_BUSY_RX;
}
hirda->RxXferSize = Size;
hirda->RxXferCount = Size;
/* Check the remain data to be received */
while(hirda->RxXferCount > 0)
{
hirda->RxXferCount--;
if(hirda->Init.WordLength == IRDA_WORDLENGTH_9B)
{
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_RXNE, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
tmp = (uint16_t*) pData ;
if(hirda->Init.Parity == IRDA_PARITY_NONE)
{
*tmp = (uint16_t)(hirda->Instance->DR & (uint16_t)0x01FF);
pData +=2;
}
else
{
*tmp = (uint16_t)(hirda->Instance->DR & (uint16_t)0x00FF);
pData +=1;
}
}
else
{
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_RXNE, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
if(hirda->Init.Parity == IRDA_PARITY_NONE)
{
*pData++ = (uint8_t)(hirda->Instance->DR & (uint8_t)0x00FF);
}
else
{
*pData++ = (uint8_t)(hirda->Instance->DR & (uint8_t)0x007F);
}
}
}
if(hirda->State == HAL_IRDA_STATE_BUSY_TX_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_TX;
}
else
{
hirda->State = HAL_IRDA_STATE_READY;
}
/* Process Unlocked */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Send an amount of data in non blocking mode.
* @param hirda: IRDA handle
* @param pData: Pointer to data buffer
* @param Size: Amount of data to be sent
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Transmit_IT(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size)
{
uint32_t tmp1 = 0;
tmp1 = hirda->State;
if((tmp1 == HAL_IRDA_STATE_READY) || (tmp1 == HAL_IRDA_STATE_BUSY_RX))
{
if((pData == NULL) || (Size == 0))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(hirda);
hirda->pTxBuffPtr = pData;
hirda->TxXferSize = Size;
hirda->TxXferCount = Size;
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
if(hirda->State == HAL_IRDA_STATE_BUSY_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_TX_RX;
}
else
{
hirda->State = HAL_IRDA_STATE_BUSY_TX;
}
/* Enable the IRDA Parity Error Interrupt */
__HAL_IRDA_ENABLE_IT(hirda, IRDA_IT_PE);
/* Enable the IRDA Error Interrupt: (Frame error, noise error, overrun error) */
__HAL_IRDA_ENABLE_IT(hirda, IRDA_IT_ERR);
/* Process Unlocked */
__HAL_UNLOCK(hirda);
/* Enable the IRDA Transmit Complete Interrupt */
__HAL_IRDA_ENABLE_IT(hirda, IRDA_IT_TC);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Receives an amount of data in non blocking mode.
* @param hirda: IRDA handle
* @param pData: Pointer to data buffer
* @param Size: Amount of data to be received
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Receive_IT(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size)
{
uint32_t tmp1 = 0;
tmp1 = hirda->State;
if((tmp1 == HAL_IRDA_STATE_READY) || (tmp1 == HAL_IRDA_STATE_BUSY_TX))
{
if((pData == NULL) || (Size == 0))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(hirda);
hirda->pRxBuffPtr = pData;
hirda->RxXferSize = Size;
hirda->RxXferCount = Size;
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
if(hirda->State == HAL_IRDA_STATE_BUSY_TX)
{
hirda->State = HAL_IRDA_STATE_BUSY_TX_RX;
}
else
{
hirda->State = HAL_IRDA_STATE_BUSY_RX;
}
/* Enable the IRDA Data Register not empty Interrupt */
__HAL_IRDA_ENABLE_IT(hirda, IRDA_IT_RXNE);
/* Enable the IRDA Parity Error Interrupt */
__HAL_IRDA_ENABLE_IT(hirda, IRDA_IT_PE);
/* Enable the IRDA Error Interrupt: (Frame error, noise error, overrun error) */
__HAL_IRDA_ENABLE_IT(hirda, IRDA_IT_ERR);
/* Process Unlocked */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Sends an amount of data in non blocking mode.
* @param hirda: IRDA handle
* @param pData: Pointer to data buffer
* @param Size: Amount of data to be sent
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Transmit_DMA(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size)
{
uint32_t *tmp;
uint32_t tmp1 = 0;
tmp1 = hirda->State;
if((tmp1 == HAL_IRDA_STATE_READY) || (tmp1 == HAL_IRDA_STATE_BUSY_RX))
{
if((pData == NULL) || (Size == 0))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(hirda);
hirda->pTxBuffPtr = pData;
hirda->TxXferSize = Size;
hirda->TxXferCount = Size;
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
if(hirda->State == HAL_IRDA_STATE_BUSY_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_TX_RX;
}
else
{
hirda->State = HAL_IRDA_STATE_BUSY_TX;
}
/* Set the IRDA DMA transfert complete callback */
hirda->hdmatx->XferCpltCallback = IRDA_DMATransmitCplt;
/* Set the DMA error callback */
hirda->hdmatx->XferErrorCallback = IRDA_DMAError;
/* Enable the IRDA transmit DMA Stream */
tmp = (uint32_t*)&pData;
HAL_DMA_Start_IT(hirda->hdmatx, *(uint32_t*)tmp, (uint32_t)&hirda->Instance->DR, Size);
/* Enable the DMA transfer for transmit request by setting the DMAT bit
in the USART CR3 register */
hirda->Instance->CR3 |= USART_CR3_DMAT;
/* Process Unlocked */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Receives an amount of data in non blocking mode.
* @param hirda: IRDA handle
* @param pData: Pointer to data buffer
* @param Size: Amount of data to be received
* @note When the IRDA parity is enabled (PCE = 1) the data received contain the parity bit.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Receive_DMA(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size)
{
uint32_t *tmp;
uint32_t tmp1 = 0;
tmp1 = hirda->State;
if((tmp1 == HAL_IRDA_STATE_READY) || (tmp1 == HAL_IRDA_STATE_BUSY_TX))
{
if((pData == NULL) || (Size == 0))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(hirda);
hirda->pRxBuffPtr = pData;
hirda->RxXferSize = Size;
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
if(hirda->State == HAL_IRDA_STATE_BUSY_TX)
{
hirda->State = HAL_IRDA_STATE_BUSY_TX_RX;
}
else
{
hirda->State = HAL_IRDA_STATE_BUSY_RX;
}
/* Set the IRDA DMA transfert complete callback */
hirda->hdmarx->XferCpltCallback = IRDA_DMAReceiveCplt;
/* Set the DMA error callback */
hirda->hdmarx->XferErrorCallback = IRDA_DMAError;
/* Enable the DMA Stream */
tmp = (uint32_t*)&pData;
HAL_DMA_Start_IT(hirda->hdmarx, (uint32_t)&hirda->Instance->DR, *(uint32_t*)tmp, Size);
/* Enable the DMA transfer for the receiver request by setting the DMAR bit
in the USART CR3 register */
hirda->Instance->CR3 |= USART_CR3_DMAR;
/* Process Unlocked */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief This function handles IRDA interrupt request.
* @param hirda: IRDA handle
* @retval None
*/
void HAL_IRDA_IRQHandler(IRDA_HandleTypeDef *hirda)
{
uint32_t tmp1 = 0, tmp2 =0;
tmp1 = __HAL_IRDA_GET_FLAG(hirda, IRDA_FLAG_PE);
tmp2 = __HAL_IRDA_GET_IT_SOURCE(hirda, IRDA_IT_PE);
/* IRDA parity error interrupt occured -------------------------------------*/
if((tmp1 != RESET) && (tmp2 != RESET))
{
__HAL_IRDA_CLEAR_FLAG(hirda, IRDA_FLAG_PE);
hirda->ErrorCode |= HAL_IRDA_ERROR_PE;
}
tmp1 = __HAL_IRDA_GET_FLAG(hirda, IRDA_FLAG_FE);
tmp2 = __HAL_IRDA_GET_IT_SOURCE(hirda, IRDA_IT_ERR);
/* IRDA frame error interrupt occured --------------------------------------*/
if((tmp1 != RESET) && (tmp2 != RESET))
{
__HAL_IRDA_CLEAR_FLAG(hirda, IRDA_FLAG_FE);
hirda->ErrorCode |= HAL_IRDA_ERROR_FE;
}
tmp1 = __HAL_IRDA_GET_FLAG(hirda, IRDA_FLAG_NE);
tmp2 = __HAL_IRDA_GET_IT_SOURCE(hirda, IRDA_IT_ERR);
/* IRDA noise error interrupt occured --------------------------------------*/
if((tmp1 != RESET) && (tmp2 != RESET))
{
__HAL_IRDA_CLEAR_FLAG(hirda, IRDA_FLAG_NE);
hirda->ErrorCode |= HAL_IRDA_ERROR_NE;
}
tmp1 = __HAL_IRDA_GET_FLAG(hirda, IRDA_FLAG_ORE);
tmp2 = __HAL_IRDA_GET_IT_SOURCE(hirda, IRDA_IT_ERR);
/* IRDA Over-Run interrupt occured -----------------------------------------*/
if((tmp1 != RESET) && (tmp2 != RESET))
{
__HAL_IRDA_CLEAR_FLAG(hirda, IRDA_FLAG_ORE);
hirda->ErrorCode |= HAL_IRDA_ERROR_ORE;
}
/* Call the Error call Back in case of Errors */
if(hirda->ErrorCode != HAL_IRDA_ERROR_NONE)
{
/* Set the IRDA state ready to be able to start again the process */
hirda->State = HAL_IRDA_STATE_READY;
HAL_IRDA_ErrorCallback(hirda);
}
tmp1 = __HAL_IRDA_GET_FLAG(hirda, IRDA_FLAG_RXNE);
tmp2 = __HAL_IRDA_GET_IT_SOURCE(hirda, IRDA_IT_RXNE);
/* IRDA in mode Receiver ---------------------------------------------------*/
if((tmp1 != RESET) && (tmp2 != RESET))
{
IRDA_Receive_IT(hirda);
__HAL_IRDA_CLEAR_FLAG(hirda, IRDA_IT_RXNE);
}
tmp1 = __HAL_IRDA_GET_FLAG(hirda, IRDA_FLAG_TC);
tmp2 = __HAL_IRDA_GET_IT_SOURCE(hirda, IRDA_IT_TC);
/* IRDA in mode Transmitter ------------------------------------------------*/
if((tmp1 != RESET) &&(tmp2 != RESET))
{
IRDA_Transmit_IT(hirda);
__HAL_IRDA_CLEAR_FLAG(hirda, IRDA_IT_TC);
}
}
/**
* @brief Tx Transfer complete callbacks.
* @param hirda: IRDA handle
* @retval None
*/
__weak void HAL_IRDA_TxCpltCallback(IRDA_HandleTypeDef *hirda)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_IRDA_TxCpltCallback could be implemented in the user file
*/
}
/**
* @brief Rx Transfer complete callbacks.
* @param hirda: IRDA handle
* @retval None
*/
__weak void HAL_IRDA_RxCpltCallback(IRDA_HandleTypeDef *hirda)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_IRDA_TxCpltCallback could be implemented in the user file
*/
}
/**
* @brief IRDA error callbacks.
* @param hirda: IRDA handle
* @retval None
*/
__weak void HAL_IRDA_ErrorCallback(IRDA_HandleTypeDef *hirda)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_IRDA_ErrorCallback could be implemented in the user file
*/
}
/**
* @}
*/
/** @defgroup IRDA_Group3 Peripheral State and Errors functions
* @brief IRDA State and Errors functions
*
@verbatim
==============================================================================
##### Peripheral State and Errors functions #####
==============================================================================
[..]
This subsection provides a set of functions allowing to return the State of IrDA
communication process, return Peripheral Errors occured during communication process
(+) HAL_IRDA_GetState() API can be helpful to check in run-time the state of the IrDA peripheral.
(+) HAL_IRDA_GetError() check in run-time errors that could be occured durung communication.
@endverbatim
* @{
*/
/**
* @brief Returns the IRDA state.
* @param hirda: IRDA handle
* @retval HAL state
*/
HAL_IRDA_StateTypeDef HAL_IRDA_GetState(IRDA_HandleTypeDef *hirda)
{
return hirda->State;
}
/**
* @brief Return the IARDA error code
* @param hirda : pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA.
* @retval IRDA Error Code
*/
uint32_t HAL_IRDA_GetError(IRDA_HandleTypeDef *hirda)
{
return hirda->ErrorCode;
}
/**
* @}
*/
/**
* @brief DMA IRDA transmit process complete callback.
* @param hdma : DMA handle
* @retval None
*/
static void IRDA_DMATransmitCplt(DMA_HandleTypeDef *hdma)
{
IRDA_HandleTypeDef* hirda = ( IRDA_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
hirda->TxXferCount = 0;
/* Wait for IRDA TC Flag */
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TC, RESET, IRDA_TIMEOUT_VALUE) != HAL_OK)
{
/* Timeout Occured */
hirda->State = HAL_IRDA_STATE_TIMEOUT;
HAL_IRDA_ErrorCallback(hirda);
}
else
{
/* No Timeout */
/* Check if a receive process is ongoing or not */
if(hirda->State == HAL_IRDA_STATE_BUSY_TX_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_RX;
}
else
{
hirda->State = HAL_IRDA_STATE_READY;
}
HAL_IRDA_TxCpltCallback(hirda);
}
}
/**
* @brief DMA IRDA receive process complete callback.
* @param hdma: DMA handle
* @retval None
*/
static void IRDA_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
{
IRDA_HandleTypeDef* hirda = ( IRDA_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
hirda->RxXferCount = 0;
if(hirda->State == HAL_IRDA_STATE_BUSY_TX_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_TX;
}
else
{
hirda->State = HAL_IRDA_STATE_READY;
}
HAL_IRDA_RxCpltCallback(hirda);
}
/**
* @brief DMA IRDA communication error callback.
* @param hdma: DMA handle
* @retval None
*/
static void IRDA_DMAError(DMA_HandleTypeDef *hdma)
{
IRDA_HandleTypeDef* hirda = ( IRDA_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
hirda->RxXferCount = 0;
hirda->TxXferCount = 0;
hirda->ErrorCode |= HAL_IRDA_ERROR_DMA;
hirda->State= HAL_IRDA_STATE_READY;
HAL_IRDA_ErrorCallback(hirda);
}
/**
* @brief This function handles IRDA Communication Timeout.
* @param hirda: IRDA handle
* @param Flag: specifies the IRDA flag to check.
* @param Status: The new Flag status (SET or RESET).
* @param Timeout: Timeout duration
* @retval HAL status
*/
static HAL_StatusTypeDef IRDA_WaitOnFlagUntilTimeout(IRDA_HandleTypeDef *hirda, uint32_t Flag, FlagStatus Status, uint32_t Timeout)
{
uint32_t timeout = 0;
timeout = HAL_GetTick() + Timeout;
/* Wait until flag is set */
if(Status == RESET)
{
while(__HAL_IRDA_GET_FLAG(hirda, Flag) == RESET)
{
/* Check for the Timeout */
if(Timeout != HAL_MAX_DELAY)
{
if(HAL_GetTick() >= timeout)
{
/* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_TXE);
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_RXNE);
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_PE);
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_ERR);
hirda->State= HAL_IRDA_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hirda);
return HAL_TIMEOUT;
}
}
}
}
else
{
while(__HAL_IRDA_GET_FLAG(hirda, Flag) != RESET)
{
/* Check for the Timeout */
if(Timeout != HAL_MAX_DELAY)
{
if(HAL_GetTick() >= timeout)
{
/* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_TXE);
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_RXNE);
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_PE);
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_ERR);
hirda->State= HAL_IRDA_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hirda);
return HAL_TIMEOUT;
}
}
}
}
return HAL_OK;
}
/**
* @brief Send an amount of data in non blocking mode.
* @param hirda: IRDA handle
* @retval HAL status
*/
static HAL_StatusTypeDef IRDA_Transmit_IT(IRDA_HandleTypeDef *hirda)
{
uint16_t* tmp;
uint32_t tmp1 = 0;
tmp1 = hirda->State;
if((tmp1 == HAL_IRDA_STATE_BUSY_TX) || (tmp1 == HAL_IRDA_STATE_BUSY_TX_RX))
{
/* Process Locked */
__HAL_LOCK(hirda);
if(hirda->Init.WordLength == IRDA_WORDLENGTH_9B)
{
tmp = (uint16_t*) hirda->pTxBuffPtr;
hirda->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FF);
if(hirda->Init.Parity == IRDA_PARITY_NONE)
{
hirda->pTxBuffPtr += 2;
}
else
{
hirda->pTxBuffPtr += 1;
}
}
else
{
hirda->Instance->DR = (uint8_t)(*hirda->pTxBuffPtr++ & (uint8_t)0x00FF);
}
if(--hirda->TxXferCount == 0)
{
/* Disable the IRDA Transmit Complete Interrupt */
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_TC);
if(hirda->State == HAL_IRDA_STATE_BUSY_TX_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_RX;
}
else
{
/* Disable the IRDA Parity Error Interrupt */
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_PE);
/* Disable the IRDA Error Interrupt: (Frame error, noise error, overrun error) */
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_ERR);
hirda->State = HAL_IRDA_STATE_READY;
}
/* Call the Process Unlocked before calling the Tx call back API to give the possibiity to
start again the Transmission under the Tx call back API */
__HAL_UNLOCK(hirda);
HAL_IRDA_TxCpltCallback(hirda);
return HAL_OK;
}
/* Process Unlocked */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Receives an amount of data in non blocking mode.
* @param hirda: IRDA handle
* @retval HAL status
*/
static HAL_StatusTypeDef IRDA_Receive_IT(IRDA_HandleTypeDef *hirda)
{
uint16_t* tmp;
uint32_t tmp1 = 0;
tmp1 = hirda->State;
if((tmp1 == HAL_IRDA_STATE_BUSY_RX) || (tmp1 == HAL_IRDA_STATE_BUSY_TX_RX))
{
/* Process Locked */
__HAL_LOCK(hirda);
if(hirda->Init.WordLength == IRDA_WORDLENGTH_9B)
{
tmp = (uint16_t*) hirda->pRxBuffPtr;
if(hirda->Init.Parity == IRDA_PARITY_NONE)
{
*tmp = (uint16_t)(hirda->Instance->DR & (uint16_t)0x01FF);
hirda->pRxBuffPtr += 2;
}
else
{
*tmp = (uint16_t)(hirda->Instance->DR & (uint16_t)0x00FF);
hirda->pRxBuffPtr += 1;
}
}
else
{
if(hirda->Init.Parity == IRDA_PARITY_NONE)
{
*hirda->pRxBuffPtr++ = (uint8_t)(hirda->Instance->DR & (uint8_t)0x00FF);
}
else
{
*hirda->pRxBuffPtr++ = (uint8_t)(hirda->Instance->DR & (uint8_t)0x007F);
}
}
if(--hirda->RxXferCount == 0)
{
while(HAL_IS_BIT_SET(hirda->Instance->SR, IRDA_FLAG_RXNE))
{
}
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_RXNE);
if(hirda->State == HAL_IRDA_STATE_BUSY_TX_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_TX;
}
else
{
/* Disable the IRDA Parity Error Interrupt */
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_PE);
/* Disable the IRDA Error Interrupt: (Frame error, noise error, overrun error) */
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_ERR);
hirda->State = HAL_IRDA_STATE_READY;
}
/* Call the Process Unlocked before calling the Rx call back API to give the possibiity to
start again the receiption under the Rx call back API */
__HAL_UNLOCK(hirda);
HAL_IRDA_RxCpltCallback(hirda);
return HAL_OK;
}
/* Process Unlocked */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Configures the IRDA peripheral.
* @param hirda: IRDA handle
* @retval None
*/
static void IRDA_SetConfig(IRDA_HandleTypeDef *hirda)
{
uint32_t tmpreg = 0x00;
/* Check the parameters */
assert_param(IS_IRDA_INSTANCE(hirda->Instance));
assert_param(IS_IRDA_BAUDRATE(hirda->Init.BaudRate));
assert_param(IS_IRDA_WORD_LENGTH(hirda->Init.WordLength));
assert_param(IS_IRDA_PARITY(hirda->Init.Parity));
assert_param(IS_IRDA_MODE(hirda->Init.Mode));
/*-------------------------- IRDA CR2 Configuration ------------------------*/
/* Clear STOP[13:12] bits */
hirda->Instance->CR2 &= (uint32_t)~((uint32_t)USART_CR2_STOP);
/*-------------------------- USART CR1 Configuration -----------------------*/
tmpreg = hirda->Instance->CR1;
/* Clear M, PCE, PS, TE and RE bits */
tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | \
USART_CR1_RE));
/* Configure the USART Word Length, Parity and mode:
Set the M bits according to hirda->Init.WordLength value
Set PCE and PS bits according to hirda->Init.Parity value
Set TE and RE bits according to hirda->Init.Mode value */
tmpreg |= (uint32_t)hirda->Init.WordLength | hirda->Init.Parity | hirda->Init.Mode;
/* Write to USART CR1 */
hirda->Instance->CR1 = (uint32_t)tmpreg;
/*-------------------------- USART CR3 Configuration -----------------------*/
/* Clear CTSE and RTSE bits */
hirda->Instance->CR3 &= (uint32_t)~((uint32_t)(USART_CR3_RTSE | USART_CR3_CTSE));
/*-------------------------- USART BRR Configuration -----------------------*/
if((hirda->Instance == USART1) || (hirda->Instance == USART6))
{
hirda->Instance->BRR = __IRDA_BRR(HAL_RCC_GetPCLK2Freq(), hirda->Init.BaudRate);
}
else
{
hirda->Instance->BRR = __IRDA_BRR(HAL_RCC_GetPCLK1Freq(), hirda->Init.BaudRate);
}
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_IRDA_MODULE_ENABLED */
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/