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+/**
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+ ******************************************************************************
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+ * @file system_stm32f4xx.c
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+ * @author MCD Application Team
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+ * @brief CMSIS Cortex-M4 Device Peripheral Access Layer System Source File.
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+ *
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+ * This file provides two functions and one global variable to be called from
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+ * user application:
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+ * - SystemInit(): This function is called at startup just after reset and
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+ * before branch to main program. This call is made inside
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+ * the "startup_stm32f4xx.s" file.
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+ *
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+ * - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
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+ * by the user application to setup the SysTick
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+ * timer or configure other parameters.
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+ *
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+ * - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
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+ * be called whenever the core clock is changed
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+ * during program execution.
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+ *
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+ *
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+ ******************************************************************************
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+ * @attention
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+ *
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+ * <h2><center>© Copyright (c) 2017 STMicroelectronics.
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+ * All rights reserved.</center></h2>
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+ *
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+ * This software component is licensed by ST under BSD 3-Clause license,
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+ * the "License"; You may not use this file except in compliance with the
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+ * License. You may obtain a copy of the License at:
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+ * opensource.org/licenses/BSD-3-Clause
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+ *
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+ ******************************************************************************
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+ */
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+
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+/** @addtogroup CMSIS
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+ * @{
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+ */
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+
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+/** @addtogroup stm32f4xx_system
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+ * @{
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+ */
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+
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+/** @addtogroup STM32F4xx_System_Private_Includes
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+ * @{
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+ */
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+
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+
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+#include "stm32f4xx.h"
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+
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+#if !defined (HSE_VALUE)
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+ #define HSE_VALUE ((uint32_t)25000000) /*!< Default value of the External oscillator in Hz */
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+#endif /* HSE_VALUE */
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+
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+#if !defined (HSI_VALUE)
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+ #define HSI_VALUE ((uint32_t)16000000) /*!< Value of the Internal oscillator in Hz*/
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+#endif /* HSI_VALUE */
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+
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+/**
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+ * @}
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+ */
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+
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+/** @addtogroup STM32F4xx_System_Private_TypesDefinitions
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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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+
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+/** @addtogroup STM32F4xx_System_Private_Defines
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+ * @{
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+ */
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+
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+/************************* Miscellaneous Configuration ************************/
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+/*!< Uncomment the following line if you need to use external SRAM or SDRAM as data memory */
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+#if defined(STM32F405xx) || defined(STM32F415xx) || defined(STM32F407xx) || defined(STM32F417xx)\
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+ || defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx)\
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+ || defined(STM32F469xx) || defined(STM32F479xx) || defined(STM32F412Zx) || defined(STM32F412Vx)
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+/* #define DATA_IN_ExtSRAM */
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+#endif /* STM32F40xxx || STM32F41xxx || STM32F42xxx || STM32F43xxx || STM32F469xx || STM32F479xx ||\
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+ STM32F412Zx || STM32F412Vx */
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+
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+#if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx)\
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+ || defined(STM32F446xx) || defined(STM32F469xx) || defined(STM32F479xx)
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+/* #define DATA_IN_ExtSDRAM */
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+#endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F446xx || STM32F469xx ||\
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+ STM32F479xx */
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+
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+/*!< Uncomment the following line if you need to relocate your vector Table in
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+ Internal SRAM. */
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+/* #define VECT_TAB_SRAM */
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+#define VECT_TAB_OFFSET 0x00 /*!< Vector Table base offset field.
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+ This value must be a multiple of 0x200. */
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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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+/** @addtogroup STM32F4xx_System_Private_Macros
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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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+
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+/** @addtogroup STM32F4xx_System_Private_Variables
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+ * @{
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+ */
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+ /* This variable is updated in three ways:
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+ 1) by calling CMSIS function SystemCoreClockUpdate()
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+ 2) by calling HAL API function HAL_RCC_GetHCLKFreq()
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+ 3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
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+ Note: If you use this function to configure the system clock; then there
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+ is no need to call the 2 first functions listed above, since SystemCoreClock
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+ variable is updated automatically.
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+ */
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+uint32_t SystemCoreClock = 16000000;
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+const uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
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+const uint8_t APBPrescTable[8] = {0, 0, 0, 0, 1, 2, 3, 4};
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+/**
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+ * @}
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+ */
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+
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+/** @addtogroup STM32F4xx_System_Private_FunctionPrototypes
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+ * @{
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+ */
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+
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+#if defined (DATA_IN_ExtSRAM) || defined (DATA_IN_ExtSDRAM)
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+ static void SystemInit_ExtMemCtl(void);
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+#endif /* DATA_IN_ExtSRAM || DATA_IN_ExtSDRAM */
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+
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+/**
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+ * @}
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+ */
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+
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+/** @addtogroup STM32F4xx_System_Private_Functions
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+ * @{
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+ */
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+
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+/**
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+ * @brief Setup the microcontroller system
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+ * Initialize the FPU setting, vector table location and External memory
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+ * configuration.
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+ * @param None
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+ * @retval None
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+ */
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+void SystemInit(void)
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+{
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+ /* FPU settings ------------------------------------------------------------*/
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+ #if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
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+ SCB->CPACR |= ((3UL << 10*2)|(3UL << 11*2)); /* set CP10 and CP11 Full Access */
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+ #endif
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+
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+#if defined (DATA_IN_ExtSRAM) || defined (DATA_IN_ExtSDRAM)
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+ SystemInit_ExtMemCtl();
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+#endif /* DATA_IN_ExtSRAM || DATA_IN_ExtSDRAM */
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+
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+ /* Configure the Vector Table location add offset address ------------------*/
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+#ifdef VECT_TAB_SRAM
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+ SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM */
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+#else
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+ SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH */
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+#endif
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+}
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+
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+/**
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+ * @brief Update SystemCoreClock variable according to Clock Register Values.
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+ * The SystemCoreClock variable contains the core clock (HCLK), it can
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+ * be used by the user application to setup the SysTick timer or configure
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+ * other parameters.
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+ *
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+ * @note Each time the core clock (HCLK) changes, this function must be called
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+ * to update SystemCoreClock variable value. Otherwise, any configuration
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+ * based on this variable will be incorrect.
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+ *
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+ * @note - The system frequency computed by this function is not the real
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+ * frequency in the chip. It is calculated based on the predefined
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+ * constant and the selected clock source:
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+ *
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+ * - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*)
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+ *
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+ * - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**)
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+ *
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+ * - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**)
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+ * or HSI_VALUE(*) multiplied/divided by the PLL factors.
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+ *
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+ * (*) HSI_VALUE is a constant defined in stm32f4xx_hal_conf.h file (default value
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+ * 16 MHz) but the real value may vary depending on the variations
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+ * in voltage and temperature.
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+ *
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+ * (**) HSE_VALUE is a constant defined in stm32f4xx_hal_conf.h file (its value
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+ * depends on the application requirements), user has to ensure that HSE_VALUE
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+ * is same as the real frequency of the crystal used. Otherwise, this function
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+ * may have wrong result.
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+ *
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+ * - The result of this function could be not correct when using fractional
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+ * value for HSE crystal.
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+ *
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+ * @param None
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+ * @retval None
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+ */
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+void SystemCoreClockUpdate(void)
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+{
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+ uint32_t tmp = 0, pllvco = 0, pllp = 2, pllsource = 0, pllm = 2;
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+
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+ /* Get SYSCLK source -------------------------------------------------------*/
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+ tmp = RCC->CFGR & RCC_CFGR_SWS;
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+
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+ switch (tmp)
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+ {
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+ case 0x00: /* HSI used as system clock source */
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+ SystemCoreClock = HSI_VALUE;
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+ break;
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+ case 0x04: /* HSE used as system clock source */
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+ SystemCoreClock = HSE_VALUE;
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+ break;
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+ case 0x08: /* PLL used as system clock source */
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+
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+ /* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLL_M) * PLL_N
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+ SYSCLK = PLL_VCO / PLL_P
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+ */
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+ pllsource = (RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) >> 22;
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+ pllm = RCC->PLLCFGR & RCC_PLLCFGR_PLLM;
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+
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+ if (pllsource != 0)
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+ {
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+ /* HSE used as PLL clock source */
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+ pllvco = (HSE_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> 6);
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+ }
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+ else
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+ {
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+ /* HSI used as PLL clock source */
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+ pllvco = (HSI_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> 6);
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+ }
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+
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+ pllp = (((RCC->PLLCFGR & RCC_PLLCFGR_PLLP) >>16) + 1 ) *2;
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+ SystemCoreClock = pllvco/pllp;
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+ break;
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+ default:
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+ SystemCoreClock = HSI_VALUE;
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+ break;
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+ }
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+ /* Compute HCLK frequency --------------------------------------------------*/
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+ /* Get HCLK prescaler */
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+ tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4)];
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+ /* HCLK frequency */
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+ SystemCoreClock >>= tmp;
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+}
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+
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+#if defined (DATA_IN_ExtSRAM) && defined (DATA_IN_ExtSDRAM)
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+#if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx)\
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+ || defined(STM32F469xx) || defined(STM32F479xx)
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+/**
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+ * @brief Setup the external memory controller.
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+ * Called in startup_stm32f4xx.s before jump to main.
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+ * This function configures the external memories (SRAM/SDRAM)
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+ * This SRAM/SDRAM will be used as program data memory (including heap and stack).
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+ * @param None
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+ * @retval None
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+ */
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+void SystemInit_ExtMemCtl(void)
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+{
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+ __IO uint32_t tmp = 0x00;
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+
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+ register uint32_t tmpreg = 0, timeout = 0xFFFF;
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+ register __IO uint32_t index;
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+
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+ /* Enable GPIOC, GPIOD, GPIOE, GPIOF, GPIOG, GPIOH and GPIOI interface clock */
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+ RCC->AHB1ENR |= 0x000001F8;
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+
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+ /* Delay after an RCC peripheral clock enabling */
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+ tmp = READ_BIT(RCC->AHB1ENR, RCC_AHB1ENR_GPIOCEN);
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+
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+ /* Connect PDx pins to FMC Alternate function */
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+ GPIOD->AFR[0] = 0x00CCC0CC;
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+ GPIOD->AFR[1] = 0xCCCCCCCC;
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+ /* Configure PDx pins in Alternate function mode */
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+ GPIOD->MODER = 0xAAAA0A8A;
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+ /* Configure PDx pins speed to 100 MHz */
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+ GPIOD->OSPEEDR = 0xFFFF0FCF;
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+ /* Configure PDx pins Output type to push-pull */
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+ GPIOD->OTYPER = 0x00000000;
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+ /* No pull-up, pull-down for PDx pins */
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+ GPIOD->PUPDR = 0x00000000;
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+
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+ /* Connect PEx pins to FMC Alternate function */
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+ GPIOE->AFR[0] = 0xC00CC0CC;
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+ GPIOE->AFR[1] = 0xCCCCCCCC;
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+ /* Configure PEx pins in Alternate function mode */
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+ GPIOE->MODER = 0xAAAA828A;
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+ /* Configure PEx pins speed to 100 MHz */
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+ GPIOE->OSPEEDR = 0xFFFFC3CF;
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+ /* Configure PEx pins Output type to push-pull */
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+ GPIOE->OTYPER = 0x00000000;
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+ /* No pull-up, pull-down for PEx pins */
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+ GPIOE->PUPDR = 0x00000000;
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+
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+ /* Connect PFx pins to FMC Alternate function */
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+ GPIOF->AFR[0] = 0xCCCCCCCC;
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+ GPIOF->AFR[1] = 0xCCCCCCCC;
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+ /* Configure PFx pins in Alternate function mode */
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+ GPIOF->MODER = 0xAA800AAA;
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+ /* Configure PFx pins speed to 50 MHz */
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+ GPIOF->OSPEEDR = 0xAA800AAA;
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+ /* Configure PFx pins Output type to push-pull */
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+ GPIOF->OTYPER = 0x00000000;
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+ /* No pull-up, pull-down for PFx pins */
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+ GPIOF->PUPDR = 0x00000000;
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+
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+ /* Connect PGx pins to FMC Alternate function */
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+ GPIOG->AFR[0] = 0xCCCCCCCC;
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+ GPIOG->AFR[1] = 0xCCCCCCCC;
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+ /* Configure PGx pins in Alternate function mode */
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+ GPIOG->MODER = 0xAAAAAAAA;
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+ /* Configure PGx pins speed to 50 MHz */
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+ GPIOG->OSPEEDR = 0xAAAAAAAA;
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+ /* Configure PGx pins Output type to push-pull */
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+ GPIOG->OTYPER = 0x00000000;
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+ /* No pull-up, pull-down for PGx pins */
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+ GPIOG->PUPDR = 0x00000000;
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+
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+ /* Connect PHx pins to FMC Alternate function */
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+ GPIOH->AFR[0] = 0x00C0CC00;
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+ GPIOH->AFR[1] = 0xCCCCCCCC;
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+ /* Configure PHx pins in Alternate function mode */
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+ GPIOH->MODER = 0xAAAA08A0;
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+ /* Configure PHx pins speed to 50 MHz */
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+ GPIOH->OSPEEDR = 0xAAAA08A0;
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+ /* Configure PHx pins Output type to push-pull */
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+ GPIOH->OTYPER = 0x00000000;
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+ /* No pull-up, pull-down for PHx pins */
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+ GPIOH->PUPDR = 0x00000000;
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+
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+ /* Connect PIx pins to FMC Alternate function */
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+ GPIOI->AFR[0] = 0xCCCCCCCC;
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+ GPIOI->AFR[1] = 0x00000CC0;
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+ /* Configure PIx pins in Alternate function mode */
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+ GPIOI->MODER = 0x0028AAAA;
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+ /* Configure PIx pins speed to 50 MHz */
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+ GPIOI->OSPEEDR = 0x0028AAAA;
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+ /* Configure PIx pins Output type to push-pull */
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+ GPIOI->OTYPER = 0x00000000;
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+ /* No pull-up, pull-down for PIx pins */
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+ GPIOI->PUPDR = 0x00000000;
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+
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+/*-- FMC Configuration -------------------------------------------------------*/
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+ /* Enable the FMC interface clock */
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+ RCC->AHB3ENR |= 0x00000001;
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+ /* Delay after an RCC peripheral clock enabling */
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+ tmp = READ_BIT(RCC->AHB3ENR, RCC_AHB3ENR_FMCEN);
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+
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+ FMC_Bank5_6->SDCR[0] = 0x000019E4;
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+ FMC_Bank5_6->SDTR[0] = 0x01115351;
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+
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+ /* SDRAM initialization sequence */
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+ /* Clock enable command */
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+ FMC_Bank5_6->SDCMR = 0x00000011;
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+ tmpreg = FMC_Bank5_6->SDSR & 0x00000020;
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+ while((tmpreg != 0) && (timeout-- > 0))
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+ {
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+ tmpreg = FMC_Bank5_6->SDSR & 0x00000020;
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+ }
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+
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+ /* Delay */
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+ for (index = 0; index<1000; index++);
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+
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+ /* PALL command */
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+ FMC_Bank5_6->SDCMR = 0x00000012;
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+ timeout = 0xFFFF;
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+ while((tmpreg != 0) && (timeout-- > 0))
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+ {
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+ tmpreg = FMC_Bank5_6->SDSR & 0x00000020;
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+ }
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+
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+ /* Auto refresh command */
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+ FMC_Bank5_6->SDCMR = 0x00000073;
|
|
|
+ timeout = 0xFFFF;
|
|
|
+ while((tmpreg != 0) && (timeout-- > 0))
|
|
|
+ {
|
|
|
+ tmpreg = FMC_Bank5_6->SDSR & 0x00000020;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* MRD register program */
|
|
|
+ FMC_Bank5_6->SDCMR = 0x00046014;
|
|
|
+ timeout = 0xFFFF;
|
|
|
+ while((tmpreg != 0) && (timeout-- > 0))
|
|
|
+ {
|
|
|
+ tmpreg = FMC_Bank5_6->SDSR & 0x00000020;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Set refresh count */
|
|
|
+ tmpreg = FMC_Bank5_6->SDRTR;
|
|
|
+ FMC_Bank5_6->SDRTR = (tmpreg | (0x0000027C<<1));
|
|
|
+
|
|
|
+ /* Disable write protection */
|
|
|
+ tmpreg = FMC_Bank5_6->SDCR[0];
|
|
|
+ FMC_Bank5_6->SDCR[0] = (tmpreg & 0xFFFFFDFF);
|
|
|
+
|
|
|
+#if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx)
|
|
|
+ /* Configure and enable Bank1_SRAM2 */
|
|
|
+ FMC_Bank1->BTCR[2] = 0x00001011;
|
|
|
+ FMC_Bank1->BTCR[3] = 0x00000201;
|
|
|
+ FMC_Bank1E->BWTR[2] = 0x0fffffff;
|
|
|
+#endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx */
|
|
|
+#if defined(STM32F469xx) || defined(STM32F479xx)
|
|
|
+ /* Configure and enable Bank1_SRAM2 */
|
|
|
+ FMC_Bank1->BTCR[2] = 0x00001091;
|
|
|
+ FMC_Bank1->BTCR[3] = 0x00110212;
|
|
|
+ FMC_Bank1E->BWTR[2] = 0x0fffffff;
|
|
|
+#endif /* STM32F469xx || STM32F479xx */
|
|
|
+
|
|
|
+ (void)(tmp);
|
|
|
+}
|
|
|
+#endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F469xx || STM32F479xx */
|
|
|
+#elif defined (DATA_IN_ExtSRAM) || defined (DATA_IN_ExtSDRAM)
|
|
|
+/**
|
|
|
+ * @brief Setup the external memory controller.
|
|
|
+ * Called in startup_stm32f4xx.s before jump to main.
|
|
|
+ * This function configures the external memories (SRAM/SDRAM)
|
|
|
+ * This SRAM/SDRAM will be used as program data memory (including heap and stack).
|
|
|
+ * @param None
|
|
|
+ * @retval None
|
|
|
+ */
|
|
|
+void SystemInit_ExtMemCtl(void)
|
|
|
+{
|
|
|
+ __IO uint32_t tmp = 0x00;
|
|
|
+#if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx)\
|
|
|
+ || defined(STM32F446xx) || defined(STM32F469xx) || defined(STM32F479xx)
|
|
|
+#if defined (DATA_IN_ExtSDRAM)
|
|
|
+ register uint32_t tmpreg = 0, timeout = 0xFFFF;
|
|
|
+ register __IO uint32_t index;
|
|
|
+
|
|
|
+#if defined(STM32F446xx)
|
|
|
+ /* Enable GPIOA, GPIOC, GPIOD, GPIOE, GPIOF, GPIOG interface
|
|
|
+ clock */
|
|
|
+ RCC->AHB1ENR |= 0x0000007D;
|
|
|
+#else
|
|
|
+ /* Enable GPIOC, GPIOD, GPIOE, GPIOF, GPIOG, GPIOH and GPIOI interface
|
|
|
+ clock */
|
|
|
+ RCC->AHB1ENR |= 0x000001F8;
|
|
|
+#endif /* STM32F446xx */
|
|
|
+ /* Delay after an RCC peripheral clock enabling */
|
|
|
+ tmp = READ_BIT(RCC->AHB1ENR, RCC_AHB1ENR_GPIOCEN);
|
|
|
+
|
|
|
+#if defined(STM32F446xx)
|
|
|
+ /* Connect PAx pins to FMC Alternate function */
|
|
|
+ GPIOA->AFR[0] |= 0xC0000000;
|
|
|
+ GPIOA->AFR[1] |= 0x00000000;
|
|
|
+ /* Configure PDx pins in Alternate function mode */
|
|
|
+ GPIOA->MODER |= 0x00008000;
|
|
|
+ /* Configure PDx pins speed to 50 MHz */
|
|
|
+ GPIOA->OSPEEDR |= 0x00008000;
|
|
|
+ /* Configure PDx pins Output type to push-pull */
|
|
|
+ GPIOA->OTYPER |= 0x00000000;
|
|
|
+ /* No pull-up, pull-down for PDx pins */
|
|
|
+ GPIOA->PUPDR |= 0x00000000;
|
|
|
+
|
|
|
+ /* Connect PCx pins to FMC Alternate function */
|
|
|
+ GPIOC->AFR[0] |= 0x00CC0000;
|
|
|
+ GPIOC->AFR[1] |= 0x00000000;
|
|
|
+ /* Configure PDx pins in Alternate function mode */
|
|
|
+ GPIOC->MODER |= 0x00000A00;
|
|
|
+ /* Configure PDx pins speed to 50 MHz */
|
|
|
+ GPIOC->OSPEEDR |= 0x00000A00;
|
|
|
+ /* Configure PDx pins Output type to push-pull */
|
|
|
+ GPIOC->OTYPER |= 0x00000000;
|
|
|
+ /* No pull-up, pull-down for PDx pins */
|
|
|
+ GPIOC->PUPDR |= 0x00000000;
|
|
|
+#endif /* STM32F446xx */
|
|
|
+
|
|
|
+ /* Connect PDx pins to FMC Alternate function */
|
|
|
+ GPIOD->AFR[0] = 0x000000CC;
|
|
|
+ GPIOD->AFR[1] = 0xCC000CCC;
|
|
|
+ /* Configure PDx pins in Alternate function mode */
|
|
|
+ GPIOD->MODER = 0xA02A000A;
|
|
|
+ /* Configure PDx pins speed to 50 MHz */
|
|
|
+ GPIOD->OSPEEDR = 0xA02A000A;
|
|
|
+ /* Configure PDx pins Output type to push-pull */
|
|
|
+ GPIOD->OTYPER = 0x00000000;
|
|
|
+ /* No pull-up, pull-down for PDx pins */
|
|
|
+ GPIOD->PUPDR = 0x00000000;
|
|
|
+
|
|
|
+ /* Connect PEx pins to FMC Alternate function */
|
|
|
+ GPIOE->AFR[0] = 0xC00000CC;
|
|
|
+ GPIOE->AFR[1] = 0xCCCCCCCC;
|
|
|
+ /* Configure PEx pins in Alternate function mode */
|
|
|
+ GPIOE->MODER = 0xAAAA800A;
|
|
|
+ /* Configure PEx pins speed to 50 MHz */
|
|
|
+ GPIOE->OSPEEDR = 0xAAAA800A;
|
|
|
+ /* Configure PEx pins Output type to push-pull */
|
|
|
+ GPIOE->OTYPER = 0x00000000;
|
|
|
+ /* No pull-up, pull-down for PEx pins */
|
|
|
+ GPIOE->PUPDR = 0x00000000;
|
|
|
+
|
|
|
+ /* Connect PFx pins to FMC Alternate function */
|
|
|
+ GPIOF->AFR[0] = 0xCCCCCCCC;
|
|
|
+ GPIOF->AFR[1] = 0xCCCCCCCC;
|
|
|
+ /* Configure PFx pins in Alternate function mode */
|
|
|
+ GPIOF->MODER = 0xAA800AAA;
|
|
|
+ /* Configure PFx pins speed to 50 MHz */
|
|
|
+ GPIOF->OSPEEDR = 0xAA800AAA;
|
|
|
+ /* Configure PFx pins Output type to push-pull */
|
|
|
+ GPIOF->OTYPER = 0x00000000;
|
|
|
+ /* No pull-up, pull-down for PFx pins */
|
|
|
+ GPIOF->PUPDR = 0x00000000;
|
|
|
+
|
|
|
+ /* Connect PGx pins to FMC Alternate function */
|
|
|
+ GPIOG->AFR[0] = 0xCCCCCCCC;
|
|
|
+ GPIOG->AFR[1] = 0xCCCCCCCC;
|
|
|
+ /* Configure PGx pins in Alternate function mode */
|
|
|
+ GPIOG->MODER = 0xAAAAAAAA;
|
|
|
+ /* Configure PGx pins speed to 50 MHz */
|
|
|
+ GPIOG->OSPEEDR = 0xAAAAAAAA;
|
|
|
+ /* Configure PGx pins Output type to push-pull */
|
|
|
+ GPIOG->OTYPER = 0x00000000;
|
|
|
+ /* No pull-up, pull-down for PGx pins */
|
|
|
+ GPIOG->PUPDR = 0x00000000;
|
|
|
+
|
|
|
+#if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx)\
|
|
|
+ || defined(STM32F469xx) || defined(STM32F479xx)
|
|
|
+ /* Connect PHx pins to FMC Alternate function */
|
|
|
+ GPIOH->AFR[0] = 0x00C0CC00;
|
|
|
+ GPIOH->AFR[1] = 0xCCCCCCCC;
|
|
|
+ /* Configure PHx pins in Alternate function mode */
|
|
|
+ GPIOH->MODER = 0xAAAA08A0;
|
|
|
+ /* Configure PHx pins speed to 50 MHz */
|
|
|
+ GPIOH->OSPEEDR = 0xAAAA08A0;
|
|
|
+ /* Configure PHx pins Output type to push-pull */
|
|
|
+ GPIOH->OTYPER = 0x00000000;
|
|
|
+ /* No pull-up, pull-down for PHx pins */
|
|
|
+ GPIOH->PUPDR = 0x00000000;
|
|
|
+
|
|
|
+ /* Connect PIx pins to FMC Alternate function */
|
|
|
+ GPIOI->AFR[0] = 0xCCCCCCCC;
|
|
|
+ GPIOI->AFR[1] = 0x00000CC0;
|
|
|
+ /* Configure PIx pins in Alternate function mode */
|
|
|
+ GPIOI->MODER = 0x0028AAAA;
|
|
|
+ /* Configure PIx pins speed to 50 MHz */
|
|
|
+ GPIOI->OSPEEDR = 0x0028AAAA;
|
|
|
+ /* Configure PIx pins Output type to push-pull */
|
|
|
+ GPIOI->OTYPER = 0x00000000;
|
|
|
+ /* No pull-up, pull-down for PIx pins */
|
|
|
+ GPIOI->PUPDR = 0x00000000;
|
|
|
+#endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F469xx || STM32F479xx */
|
|
|
+
|
|
|
+/*-- FMC Configuration -------------------------------------------------------*/
|
|
|
+ /* Enable the FMC interface clock */
|
|
|
+ RCC->AHB3ENR |= 0x00000001;
|
|
|
+ /* Delay after an RCC peripheral clock enabling */
|
|
|
+ tmp = READ_BIT(RCC->AHB3ENR, RCC_AHB3ENR_FMCEN);
|
|
|
+
|
|
|
+ /* Configure and enable SDRAM bank1 */
|
|
|
+#if defined(STM32F446xx)
|
|
|
+ FMC_Bank5_6->SDCR[0] = 0x00001954;
|
|
|
+#else
|
|
|
+ FMC_Bank5_6->SDCR[0] = 0x000019E4;
|
|
|
+#endif /* STM32F446xx */
|
|
|
+ FMC_Bank5_6->SDTR[0] = 0x01115351;
|
|
|
+
|
|
|
+ /* SDRAM initialization sequence */
|
|
|
+ /* Clock enable command */
|
|
|
+ FMC_Bank5_6->SDCMR = 0x00000011;
|
|
|
+ tmpreg = FMC_Bank5_6->SDSR & 0x00000020;
|
|
|
+ while((tmpreg != 0) && (timeout-- > 0))
|
|
|
+ {
|
|
|
+ tmpreg = FMC_Bank5_6->SDSR & 0x00000020;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Delay */
|
|
|
+ for (index = 0; index<1000; index++);
|
|
|
+
|
|
|
+ /* PALL command */
|
|
|
+ FMC_Bank5_6->SDCMR = 0x00000012;
|
|
|
+ timeout = 0xFFFF;
|
|
|
+ while((tmpreg != 0) && (timeout-- > 0))
|
|
|
+ {
|
|
|
+ tmpreg = FMC_Bank5_6->SDSR & 0x00000020;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Auto refresh command */
|
|
|
+#if defined(STM32F446xx)
|
|
|
+ FMC_Bank5_6->SDCMR = 0x000000F3;
|
|
|
+#else
|
|
|
+ FMC_Bank5_6->SDCMR = 0x00000073;
|
|
|
+#endif /* STM32F446xx */
|
|
|
+ timeout = 0xFFFF;
|
|
|
+ while((tmpreg != 0) && (timeout-- > 0))
|
|
|
+ {
|
|
|
+ tmpreg = FMC_Bank5_6->SDSR & 0x00000020;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* MRD register program */
|
|
|
+#if defined(STM32F446xx)
|
|
|
+ FMC_Bank5_6->SDCMR = 0x00044014;
|
|
|
+#else
|
|
|
+ FMC_Bank5_6->SDCMR = 0x00046014;
|
|
|
+#endif /* STM32F446xx */
|
|
|
+ timeout = 0xFFFF;
|
|
|
+ while((tmpreg != 0) && (timeout-- > 0))
|
|
|
+ {
|
|
|
+ tmpreg = FMC_Bank5_6->SDSR & 0x00000020;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Set refresh count */
|
|
|
+ tmpreg = FMC_Bank5_6->SDRTR;
|
|
|
+#if defined(STM32F446xx)
|
|
|
+ FMC_Bank5_6->SDRTR = (tmpreg | (0x0000050C<<1));
|
|
|
+#else
|
|
|
+ FMC_Bank5_6->SDRTR = (tmpreg | (0x0000027C<<1));
|
|
|
+#endif /* STM32F446xx */
|
|
|
+
|
|
|
+ /* Disable write protection */
|
|
|
+ tmpreg = FMC_Bank5_6->SDCR[0];
|
|
|
+ FMC_Bank5_6->SDCR[0] = (tmpreg & 0xFFFFFDFF);
|
|
|
+#endif /* DATA_IN_ExtSDRAM */
|
|
|
+#endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F446xx || STM32F469xx || STM32F479xx */
|
|
|
+
|
|
|
+#if defined(STM32F405xx) || defined(STM32F415xx) || defined(STM32F407xx) || defined(STM32F417xx)\
|
|
|
+ || defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx)\
|
|
|
+ || defined(STM32F469xx) || defined(STM32F479xx) || defined(STM32F412Zx) || defined(STM32F412Vx)
|
|
|
+
|
|
|
+#if defined(DATA_IN_ExtSRAM)
|
|
|
+/*-- GPIOs Configuration -----------------------------------------------------*/
|
|
|
+ /* Enable GPIOD, GPIOE, GPIOF and GPIOG interface clock */
|
|
|
+ RCC->AHB1ENR |= 0x00000078;
|
|
|
+ /* Delay after an RCC peripheral clock enabling */
|
|
|
+ tmp = READ_BIT(RCC->AHB1ENR, RCC_AHB1ENR_GPIODEN);
|
|
|
+
|
|
|
+ /* Connect PDx pins to FMC Alternate function */
|
|
|
+ GPIOD->AFR[0] = 0x00CCC0CC;
|
|
|
+ GPIOD->AFR[1] = 0xCCCCCCCC;
|
|
|
+ /* Configure PDx pins in Alternate function mode */
|
|
|
+ GPIOD->MODER = 0xAAAA0A8A;
|
|
|
+ /* Configure PDx pins speed to 100 MHz */
|
|
|
+ GPIOD->OSPEEDR = 0xFFFF0FCF;
|
|
|
+ /* Configure PDx pins Output type to push-pull */
|
|
|
+ GPIOD->OTYPER = 0x00000000;
|
|
|
+ /* No pull-up, pull-down for PDx pins */
|
|
|
+ GPIOD->PUPDR = 0x00000000;
|
|
|
+
|
|
|
+ /* Connect PEx pins to FMC Alternate function */
|
|
|
+ GPIOE->AFR[0] = 0xC00CC0CC;
|
|
|
+ GPIOE->AFR[1] = 0xCCCCCCCC;
|
|
|
+ /* Configure PEx pins in Alternate function mode */
|
|
|
+ GPIOE->MODER = 0xAAAA828A;
|
|
|
+ /* Configure PEx pins speed to 100 MHz */
|
|
|
+ GPIOE->OSPEEDR = 0xFFFFC3CF;
|
|
|
+ /* Configure PEx pins Output type to push-pull */
|
|
|
+ GPIOE->OTYPER = 0x00000000;
|
|
|
+ /* No pull-up, pull-down for PEx pins */
|
|
|
+ GPIOE->PUPDR = 0x00000000;
|
|
|
+
|
|
|
+ /* Connect PFx pins to FMC Alternate function */
|
|
|
+ GPIOF->AFR[0] = 0x00CCCCCC;
|
|
|
+ GPIOF->AFR[1] = 0xCCCC0000;
|
|
|
+ /* Configure PFx pins in Alternate function mode */
|
|
|
+ GPIOF->MODER = 0xAA000AAA;
|
|
|
+ /* Configure PFx pins speed to 100 MHz */
|
|
|
+ GPIOF->OSPEEDR = 0xFF000FFF;
|
|
|
+ /* Configure PFx pins Output type to push-pull */
|
|
|
+ GPIOF->OTYPER = 0x00000000;
|
|
|
+ /* No pull-up, pull-down for PFx pins */
|
|
|
+ GPIOF->PUPDR = 0x00000000;
|
|
|
+
|
|
|
+ /* Connect PGx pins to FMC Alternate function */
|
|
|
+ GPIOG->AFR[0] = 0x00CCCCCC;
|
|
|
+ GPIOG->AFR[1] = 0x000000C0;
|
|
|
+ /* Configure PGx pins in Alternate function mode */
|
|
|
+ GPIOG->MODER = 0x00085AAA;
|
|
|
+ /* Configure PGx pins speed to 100 MHz */
|
|
|
+ GPIOG->OSPEEDR = 0x000CAFFF;
|
|
|
+ /* Configure PGx pins Output type to push-pull */
|
|
|
+ GPIOG->OTYPER = 0x00000000;
|
|
|
+ /* No pull-up, pull-down for PGx pins */
|
|
|
+ GPIOG->PUPDR = 0x00000000;
|
|
|
+
|
|
|
+/*-- FMC/FSMC Configuration --------------------------------------------------*/
|
|
|
+ /* Enable the FMC/FSMC interface clock */
|
|
|
+ RCC->AHB3ENR |= 0x00000001;
|
|
|
+
|
|
|
+#if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx)
|
|
|
+ /* Delay after an RCC peripheral clock enabling */
|
|
|
+ tmp = READ_BIT(RCC->AHB3ENR, RCC_AHB3ENR_FMCEN);
|
|
|
+ /* Configure and enable Bank1_SRAM2 */
|
|
|
+ FMC_Bank1->BTCR[2] = 0x00001011;
|
|
|
+ FMC_Bank1->BTCR[3] = 0x00000201;
|
|
|
+ FMC_Bank1E->BWTR[2] = 0x0fffffff;
|
|
|
+#endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx */
|
|
|
+#if defined(STM32F469xx) || defined(STM32F479xx)
|
|
|
+ /* Delay after an RCC peripheral clock enabling */
|
|
|
+ tmp = READ_BIT(RCC->AHB3ENR, RCC_AHB3ENR_FMCEN);
|
|
|
+ /* Configure and enable Bank1_SRAM2 */
|
|
|
+ FMC_Bank1->BTCR[2] = 0x00001091;
|
|
|
+ FMC_Bank1->BTCR[3] = 0x00110212;
|
|
|
+ FMC_Bank1E->BWTR[2] = 0x0fffffff;
|
|
|
+#endif /* STM32F469xx || STM32F479xx */
|
|
|
+#if defined(STM32F405xx) || defined(STM32F415xx) || defined(STM32F407xx)|| defined(STM32F417xx)\
|
|
|
+ || defined(STM32F412Zx) || defined(STM32F412Vx)
|
|
|
+ /* Delay after an RCC peripheral clock enabling */
|
|
|
+ tmp = READ_BIT(RCC->AHB3ENR, RCC_AHB3ENR_FSMCEN);
|
|
|
+ /* Configure and enable Bank1_SRAM2 */
|
|
|
+ FSMC_Bank1->BTCR[2] = 0x00001011;
|
|
|
+ FSMC_Bank1->BTCR[3] = 0x00000201;
|
|
|
+ FSMC_Bank1E->BWTR[2] = 0x0FFFFFFF;
|
|
|
+#endif /* STM32F405xx || STM32F415xx || STM32F407xx || STM32F417xx || STM32F412Zx || STM32F412Vx */
|
|
|
+
|
|
|
+#endif /* DATA_IN_ExtSRAM */
|
|
|
+#endif /* STM32F405xx || STM32F415xx || STM32F407xx || STM32F417xx || STM32F427xx || STM32F437xx ||\
|
|
|
+ STM32F429xx || STM32F439xx || STM32F469xx || STM32F479xx || STM32F412Zx || STM32F412Vx */
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+ (void)(tmp);
|
|
|
+}
|
|
|
+#endif /* DATA_IN_ExtSRAM && DATA_IN_ExtSDRAM */
|
|
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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****/
|
Martin Valik