2 ******************************************************************************
3 * @file stm32f4xx_hal_pcd_ex.c
4 * @author MCD Application Team
7 * @brief PCD HAL module driver.
8 * This file provides firmware functions to manage the following
9 * functionalities of the USB Peripheral Controller:
10 * + Extended features functions
12 ******************************************************************************
15 * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
17 * Redistribution and use in source and binary forms, with or without modification,
18 * are permitted provided that the following conditions are met:
19 * 1. Redistributions of source code must retain the above copyright notice,
20 * this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright notice,
22 * this list of conditions and the following disclaimer in the documentation
23 * and/or other materials provided with the distribution.
24 * 3. Neither the name of STMicroelectronics nor the names of its contributors
25 * may be used to endorse or promote products derived from this software
26 * without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
29 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
31 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
34 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
35 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
36 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
37 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 ******************************************************************************
42 /* Includes ------------------------------------------------------------------*/
43 #include "stm32f4xx_hal.h"
45 /** @addtogroup STM32F4xx_HAL_Driver
50 * @brief PCD Extended HAL module driver
54 #ifdef HAL_PCD_MODULE_ENABLED
56 /* Private typedef -----------------------------------------------------------*/
57 /* Private define ------------------------------------------------------------*/
58 /* Private macro -------------------------------------------------------------*/
59 /* Private variables ---------------------------------------------------------*/
60 /* Private function prototypes -----------------------------------------------*/
61 /* Private functions ---------------------------------------------------------*/
63 /** @defgroup PCDEx_Private_Functions
68 /** @defgroup PCDEx_Group1 Extended features functions
69 * @brief Extended features functions
72 ===============================================================================
73 ##### Extended features functions #####
74 ===============================================================================
75 [..] This section provides functions allowing to:
76 (+) Update FIFO configuration
83 * @brief Update FIFO configuration
84 * @param hpcd: PCD handle
87 HAL_StatusTypeDef HAL_PCDEx_SetTxFiFo(PCD_HandleTypeDef *hpcd, uint8_t fifo, uint16_t size)
90 uint32_t Tx_Offset = 0;
92 /* TXn min size = 16 words. (n : Transmit FIFO index)
93 When a TxFIFO is not used, the Configuration should be as follows:
94 case 1 : n > m and Txn is not used (n,m : Transmit FIFO indexes)
95 --> Txm can use the space allocated for Txn.
96 case2 : n < m and Txn is not used (n,m : Transmit FIFO indexes)
97 --> Txn should be configured with the minimum space of 16 words
98 The FIFO is used optimally when used TxFIFOs are allocated in the top
99 of the FIFO.Ex: use EP1 and EP2 as IN instead of EP1 and EP3 as IN ones.
100 When DMA is used 3n * FIFO locations should be reserved for internal DMA registers */
102 Tx_Offset = hpcd->Instance->GRXFSIZ;
106 hpcd->Instance->DIEPTXF0_HNPTXFSIZ = (size << 16) | Tx_Offset;
110 Tx_Offset += (hpcd->Instance->DIEPTXF0_HNPTXFSIZ) >> 16;
111 for (i = 0; i < (fifo - 1); i++)
113 Tx_Offset += (hpcd->Instance->DIEPTXF[i] >> 16);
116 /* Multiply Tx_Size by 2 to get higher performance */
117 hpcd->Instance->DIEPTXF[fifo - 1] = (size << 16) | Tx_Offset;
125 * @brief Update FIFO configuration
126 * @param hpcd: PCD handle
129 HAL_StatusTypeDef HAL_PCDEx_SetRxFiFo(PCD_HandleTypeDef *hpcd, uint16_t size)
132 hpcd->Instance->GRXFSIZ = size;
145 #endif /* HAL_PCD_MODULE_ENABLED */
154 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/