OrgST-Microelectronics
/
STM32CubeF7
mirror of https://github.com/STMicroelectronics/STM32CubeF7.git
1
0
Fork 0
Code Issues Releases Wiki Activity
STM32CubeF7/Projects/STM32F722ZE-Nucleo/Examples/RNG/RNG_MultiRNG/Src/main.c

303 lines
8.4 KiB
C
Raw Permalink Blame History

/**
******************************************************************************
* @file RNG/RNG_MultiRNG/Src/main.c
* @author MCD Application Team
* @brief This sample code shows how to use the RNG HAL API
* to generate 32-bit long random numbers.
******************************************************************************
* @attention
*
* Copyright (c) 2016 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/** @addtogroup STM32F7xx_HAL_Examples
* @{
*/
/** @addtogroup RNG_MultiRNG
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* RNG handler declaration */
RNG_HandleTypeDef RngHandle;
/* Used for storing 8 Random 32bit Numbers */
uint32_t aRandom32bit[8];
__IO uint8_t ubUserButtonClickEvent = RESET; /* Event detection: Set after User Button interrupt */
/* Private function prototypes -----------------------------------------------*/
static void MPU_Config(void);
static void SystemClock_Config(void);
static void CPU_CACHE_Enable(void);
static void Error_Handler(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
uint32_t counter = 0;
/* Configure the MPU attributes */
MPU_Config();
/* Enable the CPU Cache */
CPU_CACHE_Enable();
/* STM32F7xx HAL library initialization:
- Configure the Flash prefetch
- Systick timer is configured by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
- Set NVIC Group Priority to 4
- Low Level Initialization
*/
HAL_Init();
/* Configure the system clock to 216 MHz */
SystemClock_Config();
/*## Configure peripherals #################################################*/
/* Initialize LED3 on board */
BSP_LED_Init(LED3);
/* Configure User push-button in Interrupt mode */
BSP_PB_Init(BUTTON_USER, BUTTON_MODE_EXTI);
/*## Configure the RNG peripheral #######################################*/
RngHandle.Instance = RNG;
/* DeInitialize the RNG peripheral */
if (HAL_RNG_DeInit(&RngHandle) != HAL_OK)
{
/* DeInitialization Error */
Error_Handler();
}
/* Initialize the RNG peripheral */
if (HAL_RNG_Init(&RngHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/* Infinite loop */
while (1)
{
/* Wait for event on push button to perform following actions */
while ((ubUserButtonClickEvent) == RESET)
{
__NOP();
}
/* Reset variable for next loop iteration */
ubUserButtonClickEvent = RESET;
/*## Generate eight 32-bit long random numbers ##################################*/
for (counter = 0; counter < 8; counter++)
{
if (HAL_RNG_GenerateRandomNumber(&RngHandle, &aRandom32bit[counter]) != HAL_OK)
{
/* Random number generation error */
Error_Handler();
}
}
}
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow :
* System Clock source = PLL (HSE)
* SYSCLK(Hz) = 216000000
* HCLK(Hz) = 216000000
* AHB Prescaler = 1
* APB1 Prescaler = 4
* APB2 Prescaler = 2
* HSE Frequency(Hz) = 8000000
* PLL_M = 8
* PLL_N = 432
* PLL_P = 2
* PLL_Q = 9
* VDD(V) = 3.3
* Main regulator output voltage = Scale1 mode
* Flash Latency(WS) = 7
* @param None
* @retval None
*/
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
/* Enable HSE Oscillator and activate PLL with HSE as source
Note: Since there is no oscillator on board, HSE clock is derived from STLink */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
RCC_OscInitStruct.HSIState = RCC_HSI_OFF;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 8;
RCC_OscInitStruct.PLL.PLLN = 432;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 9;
if(HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
while(1) {};
}
/* Activate the OverDrive to reach the 216 Mhz Frequency */
if(HAL_PWREx_EnableOverDrive() != HAL_OK)
{
while(1) {};
}
/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
clocks dividers */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7) != HAL_OK)
{
while(1) {};
}
}
/**
* @brief EXTI line detection callbacks
* @param GPIO_Pin: Specifies the pins connected EXTI line
* @retval None
*/
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
if (GPIO_Pin == USER_BUTTON_PIN)
{
/* Set variable to report push button event to main program */
ubUserButtonClickEvent = SET;
}
}
/**
* @brief CPU L1-Cache enable.
* @param None
* @retval None
*/
static void CPU_CACHE_Enable(void)
{
/* Enable I-Cache */
SCB_EnableICache();
/* Enable D-Cache */
SCB_EnableDCache();
}
/**
* @brief This function is executed in case of error occurrence.
* @param None
* @retval None
*/
static void Error_Handler(void)
{
/* User may add here some code to deal with a potential error */
/* In case of error, LED3 is toggling at a frequency of 1Hz */
while(1)
{
/* Toggle LED3 */
BSP_LED_Toggle(LED3);
HAL_Delay(500);
}
}
/**
* @brief Configure the MPU attributes
* @param None
* @retval None
*/
static void MPU_Config(void)
{
MPU_Region_InitTypeDef MPU_InitStruct;
/* Disable the MPU */
HAL_MPU_Disable();
/* Configure the MPU as Strongly ordered for not defined regions */
MPU_InitStruct.Enable = MPU_REGION_ENABLE;
MPU_InitStruct.BaseAddress = 0x00;
MPU_InitStruct.Size = MPU_REGION_SIZE_4GB;
MPU_InitStruct.AccessPermission = MPU_REGION_NO_ACCESS;
MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
MPU_InitStruct.Number = MPU_REGION_NUMBER0;
MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
MPU_InitStruct.SubRegionDisable = 0x87;
MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
HAL_MPU_ConfigRegion(&MPU_InitStruct);
/* Enable the MPU */
HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/
Reference in New Issue View Git Blame Copy Permalink