Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32F2/stm32f2xx_hal_pcd_ex.c@147:ba84b7dc41a7, 2016-09-10 (annotated)

Committer:
JojoS
Date:
Sat Sep 10 15:32:04 2016 +0000
Revision:
147:ba84b7dc41a7
Parent:
144:ef7eb2e8f9f7 
added prescaler for 16 bit timers (solution as in LPC11xx), default prescaler 31 for max 28 ms period time

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /**
<> 144:ef7eb2e8f9f7 2 ******************************************************************************
<> 144:ef7eb2e8f9f7 3 * @file stm32f2xx_hal_pcd_ex.c
<> 144:ef7eb2e8f9f7 4 * @author MCD Application Team
<> 144:ef7eb2e8f9f7 5 * @version V1.1.3
<> 144:ef7eb2e8f9f7 6 * @date 29-June-2016
<> 144:ef7eb2e8f9f7 7 * @brief PCD HAL module driver.
<> 144:ef7eb2e8f9f7 8 * This file provides firmware functions to manage the following
<> 144:ef7eb2e8f9f7 9 * functionalities of the USB Peripheral Controller:
<> 144:ef7eb2e8f9f7 10 * + Extended features functions
<> 144:ef7eb2e8f9f7 11 *
<> 144:ef7eb2e8f9f7 12 ******************************************************************************
<> 144:ef7eb2e8f9f7 13 * @attention
<> 144:ef7eb2e8f9f7 14 *
<> 144:ef7eb2e8f9f7 15 * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
<> 144:ef7eb2e8f9f7 16 *
<> 144:ef7eb2e8f9f7 17 * Redistribution and use in source and binary forms, with or without modification,
<> 144:ef7eb2e8f9f7 18 * are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 19 * 1. Redistributions of source code must retain the above copyright notice,
<> 144:ef7eb2e8f9f7 20 * this list of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 21 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 144:ef7eb2e8f9f7 22 * this list of conditions and the following disclaimer in the documentation
<> 144:ef7eb2e8f9f7 23 * and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 24 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 144:ef7eb2e8f9f7 25 * may be used to endorse or promote products derived from this software
<> 144:ef7eb2e8f9f7 26 * without specific prior written permission.
<> 144:ef7eb2e8f9f7 27 *
<> 144:ef7eb2e8f9f7 28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 144:ef7eb2e8f9f7 29 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 144:ef7eb2e8f9f7 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 31 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 144:ef7eb2e8f9f7 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 144:ef7eb2e8f9f7 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 144:ef7eb2e8f9f7 34 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 144:ef7eb2e8f9f7 35 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 144:ef7eb2e8f9f7 36 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 144:ef7eb2e8f9f7 37 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 38 *
<> 144:ef7eb2e8f9f7 39 ******************************************************************************
<> 144:ef7eb2e8f9f7 40 */
<> 144:ef7eb2e8f9f7 41
<> 144:ef7eb2e8f9f7 42 /* Includes ------------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 43 #include "stm32f2xx_hal.h"
<> 144:ef7eb2e8f9f7 44
<> 144:ef7eb2e8f9f7 45 /** @addtogroup STM32F2xx_HAL_Driver
<> 144:ef7eb2e8f9f7 46 * @{
<> 144:ef7eb2e8f9f7 47 */
<> 144:ef7eb2e8f9f7 48
<> 144:ef7eb2e8f9f7 49 /** @defgroup PCDEx PCDEx
<> 144:ef7eb2e8f9f7 50 * @brief PCD Extended HAL module driver
<> 144:ef7eb2e8f9f7 51 * @{
<> 144:ef7eb2e8f9f7 52 */
<> 144:ef7eb2e8f9f7 53 #ifdef HAL_PCD_MODULE_ENABLED
<> 144:ef7eb2e8f9f7 54
<> 144:ef7eb2e8f9f7 55 /* Private types -------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 56 /* Private variables ---------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 57 /* Private constants ---------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 58 /* Private macros ------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 59 /* Private functions ---------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 60 /* Exported functions --------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 61
<> 144:ef7eb2e8f9f7 62 /** @defgroup PCDEx_Exported_Functions PCD Extended Exported Functions
<> 144:ef7eb2e8f9f7 63 * @{
<> 144:ef7eb2e8f9f7 64 */
<> 144:ef7eb2e8f9f7 65
<> 144:ef7eb2e8f9f7 66 /** @defgroup PCDEx_Exported_Functions_Group1 Peripheral Control functions
<> 144:ef7eb2e8f9f7 67 * @brief PCDEx control functions
<> 144:ef7eb2e8f9f7 68 *
<> 144:ef7eb2e8f9f7 69 @verbatim
<> 144:ef7eb2e8f9f7 70 ===============================================================================
<> 144:ef7eb2e8f9f7 71 ##### Extended features functions #####
<> 144:ef7eb2e8f9f7 72 ===============================================================================
<> 144:ef7eb2e8f9f7 73 [..] This section provides functions allowing to:
<> 144:ef7eb2e8f9f7 74 (+) Update FIFO configuration
<> 144:ef7eb2e8f9f7 75
<> 144:ef7eb2e8f9f7 76 @endverbatim
<> 144:ef7eb2e8f9f7 77 * @{
<> 144:ef7eb2e8f9f7 78 */
<> 144:ef7eb2e8f9f7 79
<> 144:ef7eb2e8f9f7 80 /**
<> 144:ef7eb2e8f9f7 81 * @brief Set Tx FIFO
<> 144:ef7eb2e8f9f7 82 * @param hpcd: PCD handle
<> 144:ef7eb2e8f9f7 83 * @param fifo: The number of Tx fifo
<> 144:ef7eb2e8f9f7 84 * @param size: Fifo size
<> 144:ef7eb2e8f9f7 85 * @retval HAL status
<> 144:ef7eb2e8f9f7 86 */
<> 144:ef7eb2e8f9f7 87 HAL_StatusTypeDef HAL_PCDEx_SetTxFiFo(PCD_HandleTypeDef *hpcd, uint8_t fifo, uint16_t size)
<> 144:ef7eb2e8f9f7 88 {
<> 144:ef7eb2e8f9f7 89 uint8_t i = 0U;
<> 144:ef7eb2e8f9f7 90 uint32_t Tx_Offset = 0U;
<> 144:ef7eb2e8f9f7 91
<> 144:ef7eb2e8f9f7 92 /* TXn min size = 16 words. (n : Transmit FIFO index)
<> 144:ef7eb2e8f9f7 93 When a TxFIFO is not used, the Configuration should be as follows:
<> 144:ef7eb2e8f9f7 94 case 1 : n > m and Txn is not used (n,m : Transmit FIFO indexes)
<> 144:ef7eb2e8f9f7 95 --> Txm can use the space allocated for Txn.
<> 144:ef7eb2e8f9f7 96 case2 : n < m and Txn is not used (n,m : Transmit FIFO indexes)
<> 144:ef7eb2e8f9f7 97 --> Txn should be configured with the minimum space of 16 words
<> 144:ef7eb2e8f9f7 98 The FIFO is used optimally when used TxFIFOs are allocated in the top
<> 144:ef7eb2e8f9f7 99 of the FIFO.Ex: use EP1 and EP2 as IN instead of EP1 and EP3 as IN ones.
<> 144:ef7eb2e8f9f7 100 When DMA is used 3n * FIFO locations should be reserved for internal DMA registers */
<> 144:ef7eb2e8f9f7 101
<> 144:ef7eb2e8f9f7 102 Tx_Offset = hpcd->Instance->GRXFSIZ;
<> 144:ef7eb2e8f9f7 103
<> 144:ef7eb2e8f9f7 104 if(fifo == 0U)
<> 144:ef7eb2e8f9f7 105 {
<> 144:ef7eb2e8f9f7 106 hpcd->Instance->DIEPTXF0_HNPTXFSIZ = (uint32_t)(((uint32_t)size << 16U) | Tx_Offset);
<> 144:ef7eb2e8f9f7 107 }
<> 144:ef7eb2e8f9f7 108 else
<> 144:ef7eb2e8f9f7 109 {
<> 144:ef7eb2e8f9f7 110 Tx_Offset += (hpcd->Instance->DIEPTXF0_HNPTXFSIZ) >> 16U;
<> 144:ef7eb2e8f9f7 111 for (i = 0U; i < (fifo - 1U); i++)
<> 144:ef7eb2e8f9f7 112 {
<> 144:ef7eb2e8f9f7 113 Tx_Offset += (hpcd->Instance->DIEPTXF[i] >> 16U);
<> 144:ef7eb2e8f9f7 114 }
<> 144:ef7eb2e8f9f7 115
<> 144:ef7eb2e8f9f7 116 /* Multiply Tx_Size by 2 to get higher performance */
<> 144:ef7eb2e8f9f7 117 hpcd->Instance->DIEPTXF[fifo - 1U] = (uint32_t)(((uint32_t)size << 16U) | Tx_Offset);
<> 144:ef7eb2e8f9f7 118 }
<> 144:ef7eb2e8f9f7 119
<> 144:ef7eb2e8f9f7 120 return HAL_OK;
<> 144:ef7eb2e8f9f7 121 }
<> 144:ef7eb2e8f9f7 122
<> 144:ef7eb2e8f9f7 123 /**
<> 144:ef7eb2e8f9f7 124 * @brief Set Rx FIFO
<> 144:ef7eb2e8f9f7 125 * @param hpcd: PCD handle
<> 144:ef7eb2e8f9f7 126 * @param size: Size of Rx fifo
<> 144:ef7eb2e8f9f7 127 * @retval HAL status
<> 144:ef7eb2e8f9f7 128 */
<> 144:ef7eb2e8f9f7 129 HAL_StatusTypeDef HAL_PCDEx_SetRxFiFo(PCD_HandleTypeDef *hpcd, uint16_t size)
<> 144:ef7eb2e8f9f7 130 {
<> 144:ef7eb2e8f9f7 131 hpcd->Instance->GRXFSIZ = size;
<> 144:ef7eb2e8f9f7 132
<> 144:ef7eb2e8f9f7 133 return HAL_OK;
<> 144:ef7eb2e8f9f7 134 }
<> 144:ef7eb2e8f9f7 135
<> 144:ef7eb2e8f9f7 136 /**
<> 144:ef7eb2e8f9f7 137 * @}
<> 144:ef7eb2e8f9f7 138 */
<> 144:ef7eb2e8f9f7 139
<> 144:ef7eb2e8f9f7 140 /**
<> 144:ef7eb2e8f9f7 141 * @}
<> 144:ef7eb2e8f9f7 142 */
<> 144:ef7eb2e8f9f7 143
<> 144:ef7eb2e8f9f7 144 #endif /* HAL_PCD_MODULE_ENABLED */
<> 144:ef7eb2e8f9f7 145 /**
<> 144:ef7eb2e8f9f7 146 * @}
<> 144:ef7eb2e8f9f7 147 */
<> 144:ef7eb2e8f9f7 148
<> 144:ef7eb2e8f9f7 149 /**
<> 144:ef7eb2e8f9f7 150 * @}
<> 144:ef7eb2e8f9f7 151 */
<> 144:ef7eb2e8f9f7 152
<> 144:ef7eb2e8f9f7 153 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/