mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
targets/TARGET_STM/TARGET_STM32F0/device/stm32f0xx_ll_crc.c@189:f392fc9709a3, 2019-02-20 (annotated)
- Committer:
- AnnaBridge
- Date:
- Wed Feb 20 22:31:08 2019 +0000
- Revision:
- 189:f392fc9709a3
- Parent:
- 180:96ed750bd169
mbed library release version 165
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
<> | 156:95d6b41a828b | 1 | /** |
<> | 156:95d6b41a828b | 2 | ****************************************************************************** |
<> | 156:95d6b41a828b | 3 | * @file stm32f0xx_ll_crc.c |
<> | 156:95d6b41a828b | 4 | * @author MCD Application Team |
<> | 156:95d6b41a828b | 5 | * @brief CRC LL module driver. |
<> | 156:95d6b41a828b | 6 | ****************************************************************************** |
<> | 156:95d6b41a828b | 7 | * @attention |
<> | 156:95d6b41a828b | 8 | * |
<> | 156:95d6b41a828b | 9 | * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> |
<> | 156:95d6b41a828b | 10 | * |
<> | 156:95d6b41a828b | 11 | * Redistribution and use in source and binary forms, with or without modification, |
<> | 156:95d6b41a828b | 12 | * are permitted provided that the following conditions are met: |
<> | 156:95d6b41a828b | 13 | * 1. Redistributions of source code must retain the above copyright notice, |
<> | 156:95d6b41a828b | 14 | * this list of conditions and the following disclaimer. |
<> | 156:95d6b41a828b | 15 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
<> | 156:95d6b41a828b | 16 | * this list of conditions and the following disclaimer in the documentation |
<> | 156:95d6b41a828b | 17 | * and/or other materials provided with the distribution. |
<> | 156:95d6b41a828b | 18 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
<> | 156:95d6b41a828b | 19 | * may be used to endorse or promote products derived from this software |
<> | 156:95d6b41a828b | 20 | * without specific prior written permission. |
<> | 156:95d6b41a828b | 21 | * |
<> | 156:95d6b41a828b | 22 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
<> | 156:95d6b41a828b | 23 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
<> | 156:95d6b41a828b | 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
<> | 156:95d6b41a828b | 25 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
<> | 156:95d6b41a828b | 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
<> | 156:95d6b41a828b | 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
<> | 156:95d6b41a828b | 28 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
<> | 156:95d6b41a828b | 29 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
<> | 156:95d6b41a828b | 30 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
<> | 156:95d6b41a828b | 31 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
<> | 156:95d6b41a828b | 32 | * |
<> | 156:95d6b41a828b | 33 | ****************************************************************************** |
<> | 156:95d6b41a828b | 34 | */ |
<> | 156:95d6b41a828b | 35 | #if defined(USE_FULL_LL_DRIVER) |
<> | 156:95d6b41a828b | 36 | |
<> | 156:95d6b41a828b | 37 | /* Includes ------------------------------------------------------------------*/ |
<> | 156:95d6b41a828b | 38 | #include "stm32f0xx_ll_crc.h" |
<> | 156:95d6b41a828b | 39 | |
<> | 156:95d6b41a828b | 40 | #ifdef USE_FULL_ASSERT |
<> | 156:95d6b41a828b | 41 | #include "stm32_assert.h" |
<> | 156:95d6b41a828b | 42 | #else |
<> | 156:95d6b41a828b | 43 | #define assert_param(expr) ((void)0U) |
<> | 156:95d6b41a828b | 44 | #endif |
<> | 156:95d6b41a828b | 45 | |
<> | 156:95d6b41a828b | 46 | /** @addtogroup STM32F0xx_LL_Driver |
<> | 156:95d6b41a828b | 47 | * @{ |
<> | 156:95d6b41a828b | 48 | */ |
<> | 156:95d6b41a828b | 49 | |
<> | 156:95d6b41a828b | 50 | #if defined (CRC) |
<> | 156:95d6b41a828b | 51 | |
<> | 156:95d6b41a828b | 52 | /** @addtogroup CRC_LL |
<> | 156:95d6b41a828b | 53 | * @{ |
<> | 156:95d6b41a828b | 54 | */ |
<> | 156:95d6b41a828b | 55 | |
<> | 156:95d6b41a828b | 56 | /* Private types -------------------------------------------------------------*/ |
<> | 156:95d6b41a828b | 57 | /* Private variables ---------------------------------------------------------*/ |
<> | 156:95d6b41a828b | 58 | /* Private constants ---------------------------------------------------------*/ |
<> | 156:95d6b41a828b | 59 | /* Private macros ------------------------------------------------------------*/ |
<> | 156:95d6b41a828b | 60 | /* Private function prototypes -----------------------------------------------*/ |
<> | 156:95d6b41a828b | 61 | |
<> | 156:95d6b41a828b | 62 | /* Exported functions --------------------------------------------------------*/ |
<> | 156:95d6b41a828b | 63 | /** @addtogroup CRC_LL_Exported_Functions |
<> | 156:95d6b41a828b | 64 | * @{ |
<> | 156:95d6b41a828b | 65 | */ |
<> | 156:95d6b41a828b | 66 | |
<> | 156:95d6b41a828b | 67 | /** @addtogroup CRC_LL_EF_Init |
<> | 156:95d6b41a828b | 68 | * @{ |
<> | 156:95d6b41a828b | 69 | */ |
<> | 156:95d6b41a828b | 70 | |
<> | 156:95d6b41a828b | 71 | /** |
<> | 156:95d6b41a828b | 72 | * @brief De-initialize CRC registers (Registers restored to their default values). |
<> | 156:95d6b41a828b | 73 | * @param CRCx CRC Instance |
<> | 156:95d6b41a828b | 74 | * @retval An ErrorStatus enumeration value: |
<> | 156:95d6b41a828b | 75 | * - SUCCESS: CRC registers are de-initialized |
<> | 156:95d6b41a828b | 76 | * - ERROR: CRC registers are not de-initialized |
<> | 156:95d6b41a828b | 77 | */ |
<> | 156:95d6b41a828b | 78 | ErrorStatus LL_CRC_DeInit(CRC_TypeDef *CRCx) |
<> | 156:95d6b41a828b | 79 | { |
<> | 156:95d6b41a828b | 80 | ErrorStatus status = SUCCESS; |
<> | 156:95d6b41a828b | 81 | |
<> | 156:95d6b41a828b | 82 | /* Check the parameters */ |
<> | 156:95d6b41a828b | 83 | assert_param(IS_CRC_ALL_INSTANCE(CRCx)); |
<> | 156:95d6b41a828b | 84 | |
<> | 156:95d6b41a828b | 85 | if (CRCx == CRC) |
<> | 156:95d6b41a828b | 86 | { |
<> | 156:95d6b41a828b | 87 | #if defined(CRC_PROG_POLYNOMIAL_SUPPORT) |
<> | 156:95d6b41a828b | 88 | /* Set programmable polynomial size in CR register to reset value (32 bits)*/ |
<> | 156:95d6b41a828b | 89 | LL_CRC_SetPolynomialSize(CRCx, LL_CRC_POLYLENGTH_32B); |
<> | 156:95d6b41a828b | 90 | |
<> | 156:95d6b41a828b | 91 | /* Set programmable polynomial in POL register to reset value */ |
<> | 156:95d6b41a828b | 92 | LL_CRC_SetPolynomialCoef(CRCx, LL_CRC_DEFAULT_CRC32_POLY); |
<> | 156:95d6b41a828b | 93 | #endif |
<> | 156:95d6b41a828b | 94 | |
<> | 156:95d6b41a828b | 95 | /* Set INIT register to reset value */ |
<> | 156:95d6b41a828b | 96 | LL_CRC_SetInitialData(CRCx, LL_CRC_DEFAULT_CRC_INITVALUE); |
<> | 156:95d6b41a828b | 97 | |
<> | 156:95d6b41a828b | 98 | /* Set Reversibility options on I/O data values in CR register to reset value */ |
<> | 156:95d6b41a828b | 99 | LL_CRC_SetInputDataReverseMode(CRCx, LL_CRC_INDATA_REVERSE_NONE); |
<> | 156:95d6b41a828b | 100 | LL_CRC_SetOutputDataReverseMode(CRCx, LL_CRC_OUTDATA_REVERSE_NONE); |
<> | 156:95d6b41a828b | 101 | |
<> | 156:95d6b41a828b | 102 | /* Reset the CRC calculation unit */ |
<> | 156:95d6b41a828b | 103 | LL_CRC_ResetCRCCalculationUnit(CRCx); |
<> | 156:95d6b41a828b | 104 | |
<> | 156:95d6b41a828b | 105 | /* Reset IDR register */ |
<> | 156:95d6b41a828b | 106 | LL_CRC_Write_IDR(CRCx, 0x00U); |
<> | 156:95d6b41a828b | 107 | } |
<> | 156:95d6b41a828b | 108 | else |
<> | 156:95d6b41a828b | 109 | { |
<> | 156:95d6b41a828b | 110 | status = ERROR; |
<> | 156:95d6b41a828b | 111 | } |
<> | 156:95d6b41a828b | 112 | |
<> | 156:95d6b41a828b | 113 | return (status); |
<> | 156:95d6b41a828b | 114 | } |
<> | 156:95d6b41a828b | 115 | |
<> | 156:95d6b41a828b | 116 | /** |
<> | 156:95d6b41a828b | 117 | * @} |
<> | 156:95d6b41a828b | 118 | */ |
<> | 156:95d6b41a828b | 119 | |
<> | 156:95d6b41a828b | 120 | /** |
<> | 156:95d6b41a828b | 121 | * @} |
<> | 156:95d6b41a828b | 122 | */ |
<> | 156:95d6b41a828b | 123 | |
<> | 156:95d6b41a828b | 124 | /** |
<> | 156:95d6b41a828b | 125 | * @} |
<> | 156:95d6b41a828b | 126 | */ |
<> | 156:95d6b41a828b | 127 | |
<> | 156:95d6b41a828b | 128 | #endif /* defined (CRC) */ |
<> | 156:95d6b41a828b | 129 | |
<> | 156:95d6b41a828b | 130 | /** |
<> | 156:95d6b41a828b | 131 | * @} |
<> | 156:95d6b41a828b | 132 | */ |
<> | 156:95d6b41a828b | 133 | |
<> | 156:95d6b41a828b | 134 | #endif /* USE_FULL_LL_DRIVER */ |
<> | 156:95d6b41a828b | 135 | |
<> | 156:95d6b41a828b | 136 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |
<> | 156:95d6b41a828b | 137 |