mirror of
https://github.com/STMicroelectronics/STM32CubeF4.git
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283 lines
9.8 KiB
C
283 lines
9.8 KiB
C
/**
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******************************************************************************
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* @file CRYP/CRYP_AESGCM/Src/main.c
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* @author MCD Application Team
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* @brief This sample code shows how to use the STM32F4xx CRYP HAL API
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* to encrypt/decrypt data and get TAG using AES in GCM Algorithm.
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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/** @addtogroup STM32F4xx_HAL_Examples
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* @{
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*/
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/** @addtogroup CRYP_Example
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* @{
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*/
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* CRYP handler declaration */
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CRYP_HandleTypeDef hcryp;
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/* AES Key */
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uint32_t AES128Key[4] = {0xfeffe992,0x8665731c,0x6d6a8f94,0x67308308};
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/* below InitVector is the Initial Counter Block (ICB)composed of IV and counter*/
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uint32_t InitVector[4] = {0xcafebabe,0xfacedbad,0xdecaf888 , 0x00000002};
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/* Header */
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uint32_t HeaderMessage[5] = {0xfeedface, 0xdeadbeef, 0xfeedface, 0xdeadbeef,0xabaddad2};
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/* Plaintext */
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uint32_t Plaintext[15] = {0xd9313225,0xf88406e5,0xa55909c5,0xaff5269a
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,0x86a7a953,0x1534f7da,0x2e4c303d,0x8a318a72
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,0x1c3c0c95,0x95680953,0x2fcf0e24,0x49a6b525
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,0xb16aedf5,0xaa0de657,0xba637b39};
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/* Expected GCM Ciphertext with AESKey128 */
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uint32_t Ciphertext[15] = {0x42831ec2,0x21777424,0x4b7221b7,0x84d0d49c
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,0xe3aa212f,0x2c02a4e0,0x35c17e23,0x29aca12e
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,0x21d514b2,0x5466931c,0x7d8f6a5a,0xac84aa05
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,0x1ba30b39,0x6a0aac97,0x3d58e091};
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/* Expected GCM TAG */
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uint32_t ExpectedTAG[4]={0x5bc94fbc,0x3221a5db,0x94fae95a,0xe7121a47};
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/* Used for storing the encrypted text */
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uint32_t Encryptedtext[16]={0};
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/* Used for storing the decrypted text */
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uint32_t Decryptedtext[16]={0};
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/* Used for storing the computed MAC (TAG) */
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uint32_t TAG[4]={0};
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/* Private function prototypes -----------------------------------------------*/
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static void SystemClock_Config(void);
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static void Error_Handler(void);
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief Main program
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* @param None
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* @retval None
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*/
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int main(void)
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{
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/* STM32F4xx HAL library initialization:
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- Configure the Flash prefetch, instruction and Data caches
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- Configure the Systick to generate an interrupt each 1 msec
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- Set NVIC Group Priority to 4
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- Global MSP (MCU Support Package) initialization
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*/
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HAL_Init();
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/* Configure the system clock to 180 MHz */
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SystemClock_Config();
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/* Configure LED1 and LED3 */
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BSP_LED_Init(LED1);
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BSP_LED_Init(LED3);
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/*## Set the CRYP parameters and initialize the CRYP IP ###################*/
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hcryp.Instance = CRYP;
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hcryp.Init.DataType = CRYP_DATATYPE_32B;
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hcryp.Init.KeySize = CRYP_KEYSIZE_128B;
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hcryp.Init.pKey = AES128Key;
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hcryp.Init.Algorithm = CRYP_AES_GCM;
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hcryp.Init.pInitVect = InitVector;
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hcryp.Init.Header = HeaderMessage;
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hcryp.Init.HeaderSize = 5;
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HAL_CRYP_Init(&hcryp);
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/*## AES GCM Encryption and TAG generation ################################*/
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/* Encryption, result in Encryptedtext buffer */
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HAL_CRYP_Encrypt(&hcryp, Plaintext, 15, Encryptedtext, TIMEOUT_VALUE);
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/*Compare results with expected buffer*/
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if(memcmp(Encryptedtext, Ciphertext, 60) != 0)
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{
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/* Not expected result, wrong on Encryptedtext buffer: Turn LED3 on */
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Error_Handler();
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}
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/* Generate the authentication TAG */
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HAL_CRYPEx_AESGCM_GenerateAuthTAG(&hcryp,TAG, TIMEOUT_VALUE);
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/*Compare results with expected TAG buffer*/
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if(memcmp(TAG, ExpectedTAG, 16) != 0)
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{
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/* Not expected result, wrong on TAG buffer: Turn LED3 on */
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Error_Handler();
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}
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/*## AES GCM Decryption and TAG generation ##############################*/
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/* Decryption, result in Decryptedtext buffer */
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HAL_CRYP_Decrypt(&hcryp,Ciphertext , 15, Decryptedtext, TIMEOUT_VALUE);
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/*Compare results with expected buffer*/
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if(memcmp(Decryptedtext, Plaintext, 60) != 0)
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{
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/* Not expected result, wrong on DecryptedText buffer: Turn LED3 on */
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Error_Handler();
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}
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/* Generate the authentication TAG */
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HAL_CRYPEx_AESGCM_GenerateAuthTAG(&hcryp,TAG, TIMEOUT_VALUE);
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/*Compare results with expected buffer*/
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if(memcmp(TAG, ExpectedTAG, 16) != 0)
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{
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/* Not expected result, wrong on TAG buffer: Turn LED3 on */
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Error_Handler();
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}
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else
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{
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/* Right Encryptedtext & Decryptedtext buffer : Turn LED1 on */
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BSP_LED_On(LED1);
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}
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/* Infinite loop */
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while (1)
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{
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}
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}
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/**
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* @brief System Clock Configuration
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* The system Clock is configured as follow :
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* System Clock source = PLL (HSE)
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* SYSCLK(Hz) = 180000000
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* HCLK(Hz) = 180000000
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* AHB Prescaler = 1
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* APB1 Prescaler = 4
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* APB2 Prescaler = 2
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* HSE Frequency(Hz) = 25000000
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* PLL_M = 25
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* PLL_N = 360
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* PLL_P = 2
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* PLL_Q = 7
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* VDD(V) = 3.3
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* Main regulator output voltage = Scale1 mode
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* Flash Latency(WS) = 5
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* @param None
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* @retval None
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*/
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static void SystemClock_Config(void)
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{
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RCC_ClkInitTypeDef RCC_ClkInitStruct;
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RCC_OscInitTypeDef RCC_OscInitStruct;
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/* Enable Power Control clock */
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__HAL_RCC_PWR_CLK_ENABLE();
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/* The voltage scaling allows optimizing the power consumption when the device is
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clocked below the maximum system frequency, to update the voltage scaling value
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regarding system frequency refer to product datasheet. */
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__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
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/* Enable HSE Oscillator and activate PLL with HSE as source */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLM = 25;
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RCC_OscInitStruct.PLL.PLLN = 360;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
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RCC_OscInitStruct.PLL.PLLQ = 7;
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HAL_RCC_OscConfig(&RCC_OscInitStruct);
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/* Activate the Over-Drive mode */
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HAL_PWREx_EnableOverDrive();
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/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
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clocks dividers */
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RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
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HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
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}
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/**
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* @brief This function is executed in case of error occurrence.
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* @param None
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* @retval None
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*/
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static void Error_Handler(void)
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{
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/* Turn LED3 on */
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BSP_LED_On(LED3);
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while (1)
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{
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}
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t *file, uint32_t line)
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{
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* Infinite loop */
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while (1)
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{
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}
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}
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#endif
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/**
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* @}
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*/
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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