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Last commit 20 Feb 2019 by 
mbed official
targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_NUCLEO_F446RE/system_stm32f4xx.c@553:063b9f2f393c, 2015-06-01 (annotated)
- Committer:
- mbed_official
- Date:
- Mon Jun 01 10:30:08 2015 +0100
- Revision:
- 553:063b9f2f393c
- Child:
- 613:bc40b8d2aec4
Synchronized with git revision 7ab478cf5c5cb75ac77f65a4ea501ce34ce3bcdf
Full URL: https://github.com/mbedmicro/mbed/commit/7ab478cf5c5cb75ac77f65a4ea501ce34ce3bcdf/
Nucleo_F446RE - adding target
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| mbed_official | 553:063b9f2f393c | 1 | /** |
| mbed_official | 553:063b9f2f393c | 2 | ****************************************************************************** |
| mbed_official | 553:063b9f2f393c | 3 | * @file system_stm32f4xx.c |
| mbed_official | 553:063b9f2f393c | 4 | * @author MCD Application Team |
| mbed_official | 553:063b9f2f393c | 5 | * @version V2.3.0 |
| mbed_official | 553:063b9f2f393c | 6 | * @date 02-March-2015 |
| mbed_official | 553:063b9f2f393c | 7 | * @brief CMSIS Cortex-M4 Device Peripheral Access Layer System Source File. |
| mbed_official | 553:063b9f2f393c | 8 | * |
| mbed_official | 553:063b9f2f393c | 9 | * This file provides two functions and one global variable to be called from |
| mbed_official | 553:063b9f2f393c | 10 | * user application: |
| mbed_official | 553:063b9f2f393c | 11 | * - SystemInit(): This function is called at startup just after reset and |
| mbed_official | 553:063b9f2f393c | 12 | * before branch to main program. This call is made inside |
| mbed_official | 553:063b9f2f393c | 13 | * the "startup_stm32f4xx.s" file. |
| mbed_official | 553:063b9f2f393c | 14 | * |
| mbed_official | 553:063b9f2f393c | 15 | * - SystemCoreClock variable: Contains the core clock (HCLK), it can be used |
| mbed_official | 553:063b9f2f393c | 16 | * by the user application to setup the SysTick |
| mbed_official | 553:063b9f2f393c | 17 | * timer or configure other parameters. |
| mbed_official | 553:063b9f2f393c | 18 | * |
| mbed_official | 553:063b9f2f393c | 19 | * - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must |
| mbed_official | 553:063b9f2f393c | 20 | * be called whenever the core clock is changed |
| mbed_official | 553:063b9f2f393c | 21 | * during program execution. |
| mbed_official | 553:063b9f2f393c | 22 | * |
| mbed_official | 553:063b9f2f393c | 23 | * This file configures the system clock as follows: |
| mbed_official | 553:063b9f2f393c | 24 | *----------------------------------------------------------------------------- |
| mbed_official | 553:063b9f2f393c | 25 | * System clock source | 1- PLL_HSE_EXTC | 3- PLL_HSI |
| mbed_official | 553:063b9f2f393c | 26 | * | (external 8 MHz clock) | (internal 16 MHz) |
| mbed_official | 553:063b9f2f393c | 27 | * | 2- PLL_HSE_XTAL | |
| mbed_official | 553:063b9f2f393c | 28 | * | (external 8 MHz xtal) | |
| mbed_official | 553:063b9f2f393c | 29 | *----------------------------------------------------------------------------- |
| mbed_official | 553:063b9f2f393c | 30 | * SYSCLK(MHz) | 180 | 16 |
| mbed_official | 553:063b9f2f393c | 31 | *----------------------------------------------------------------------------- |
| mbed_official | 553:063b9f2f393c | 32 | * AHBCLK (MHz) | 180 | 16 |
| mbed_official | 553:063b9f2f393c | 33 | *----------------------------------------------------------------------------- |
| mbed_official | 553:063b9f2f393c | 34 | * APB1CLK (MHz) | 45 | 4 |
| mbed_official | 553:063b9f2f393c | 35 | *----------------------------------------------------------------------------- |
| mbed_official | 553:063b9f2f393c | 36 | * APB2CLK (MHz) | 90 | 8 |
| mbed_official | 553:063b9f2f393c | 37 | *----------------------------------------------------------------------------- |
| mbed_official | 553:063b9f2f393c | 38 | * USB capable (48 MHz precise clock) | YES | NO |
| mbed_official | 553:063b9f2f393c | 39 | *----------------------------------------------------------------------------- |
| mbed_official | 553:063b9f2f393c | 40 | ****************************************************************************** |
| mbed_official | 553:063b9f2f393c | 41 | * @attention |
| mbed_official | 553:063b9f2f393c | 42 | * |
| mbed_official | 553:063b9f2f393c | 43 | * <h2><center>© COPYRIGHT 2015 STMicroelectronics</center></h2> |
| mbed_official | 553:063b9f2f393c | 44 | * |
| mbed_official | 553:063b9f2f393c | 45 | * Redistribution and use in source and binary forms, with or without modification, |
| mbed_official | 553:063b9f2f393c | 46 | * are permitted provided that the following conditions are met: |
| mbed_official | 553:063b9f2f393c | 47 | * 1. Redistributions of source code must retain the above copyright notice, |
| mbed_official | 553:063b9f2f393c | 48 | * this list of conditions and the following disclaimer. |
| mbed_official | 553:063b9f2f393c | 49 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| mbed_official | 553:063b9f2f393c | 50 | * this list of conditions and the following disclaimer in the documentation |
| mbed_official | 553:063b9f2f393c | 51 | * and/or other materials provided with the distribution. |
| mbed_official | 553:063b9f2f393c | 52 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
| mbed_official | 553:063b9f2f393c | 53 | * may be used to endorse or promote products derived from this software |
| mbed_official | 553:063b9f2f393c | 54 | * without specific prior written permission. |
| mbed_official | 553:063b9f2f393c | 55 | * |
| mbed_official | 553:063b9f2f393c | 56 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| mbed_official | 553:063b9f2f393c | 57 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| mbed_official | 553:063b9f2f393c | 58 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| mbed_official | 553:063b9f2f393c | 59 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| mbed_official | 553:063b9f2f393c | 60 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| mbed_official | 553:063b9f2f393c | 61 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| mbed_official | 553:063b9f2f393c | 62 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| mbed_official | 553:063b9f2f393c | 63 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| mbed_official | 553:063b9f2f393c | 64 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| mbed_official | 553:063b9f2f393c | 65 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| mbed_official | 553:063b9f2f393c | 66 | * |
| mbed_official | 553:063b9f2f393c | 67 | ****************************************************************************** |
| mbed_official | 553:063b9f2f393c | 68 | */ |
| mbed_official | 553:063b9f2f393c | 69 | |
| mbed_official | 553:063b9f2f393c | 70 | /** @addtogroup CMSIS |
| mbed_official | 553:063b9f2f393c | 71 | * @{ |
| mbed_official | 553:063b9f2f393c | 72 | */ |
| mbed_official | 553:063b9f2f393c | 73 | |
| mbed_official | 553:063b9f2f393c | 74 | /** @addtogroup stm32f4xx_system |
| mbed_official | 553:063b9f2f393c | 75 | * @{ |
| mbed_official | 553:063b9f2f393c | 76 | */ |
| mbed_official | 553:063b9f2f393c | 77 | |
| mbed_official | 553:063b9f2f393c | 78 | /** @addtogroup STM32F4xx_System_Private_Includes |
| mbed_official | 553:063b9f2f393c | 79 | * @{ |
| mbed_official | 553:063b9f2f393c | 80 | */ |
| mbed_official | 553:063b9f2f393c | 81 | |
| mbed_official | 553:063b9f2f393c | 82 | |
| mbed_official | 553:063b9f2f393c | 83 | #include "stm32f4xx.h" |
| mbed_official | 553:063b9f2f393c | 84 | #include "hal_tick.h" |
| mbed_official | 553:063b9f2f393c | 85 | |
| mbed_official | 553:063b9f2f393c | 86 | #if !defined (HSE_VALUE) |
| mbed_official | 553:063b9f2f393c | 87 | #define HSE_VALUE ((uint32_t)8000000) /*!< Default value of the External oscillator in Hz */ |
| mbed_official | 553:063b9f2f393c | 88 | #endif /* HSE_VALUE */ |
| mbed_official | 553:063b9f2f393c | 89 | |
| mbed_official | 553:063b9f2f393c | 90 | #if !defined (HSI_VALUE) |
| mbed_official | 553:063b9f2f393c | 91 | #define HSI_VALUE ((uint32_t)16000000) /*!< Value of the Internal oscillator in Hz*/ |
| mbed_official | 553:063b9f2f393c | 92 | #endif /* HSI_VALUE */ |
| mbed_official | 553:063b9f2f393c | 93 | |
| mbed_official | 553:063b9f2f393c | 94 | /** |
| mbed_official | 553:063b9f2f393c | 95 | * @} |
| mbed_official | 553:063b9f2f393c | 96 | */ |
| mbed_official | 553:063b9f2f393c | 97 | |
| mbed_official | 553:063b9f2f393c | 98 | /** @addtogroup STM32F4xx_System_Private_TypesDefinitions |
| mbed_official | 553:063b9f2f393c | 99 | * @{ |
| mbed_official | 553:063b9f2f393c | 100 | */ |
| mbed_official | 553:063b9f2f393c | 101 | |
| mbed_official | 553:063b9f2f393c | 102 | /** |
| mbed_official | 553:063b9f2f393c | 103 | * @} |
| mbed_official | 553:063b9f2f393c | 104 | */ |
| mbed_official | 553:063b9f2f393c | 105 | |
| mbed_official | 553:063b9f2f393c | 106 | /** @addtogroup STM32F4xx_System_Private_Defines |
| mbed_official | 553:063b9f2f393c | 107 | * @{ |
| mbed_official | 553:063b9f2f393c | 108 | */ |
| mbed_official | 553:063b9f2f393c | 109 | |
| mbed_official | 553:063b9f2f393c | 110 | /************************* Miscellaneous Configuration ************************/ |
| mbed_official | 553:063b9f2f393c | 111 | /*!< Uncomment the following line if you need to use external SRAM or SDRAM as data memory */ |
| mbed_official | 553:063b9f2f393c | 112 | #if defined(STM32F405xx) || defined(STM32F415xx) || defined(STM32F407xx) || defined(STM32F417xx)\ |
| mbed_official | 553:063b9f2f393c | 113 | || defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx)\ |
| mbed_official | 553:063b9f2f393c | 114 | || defined(STM32F446xx) |
| mbed_official | 553:063b9f2f393c | 115 | /* #define DATA_IN_ExtSRAM */ |
| mbed_official | 553:063b9f2f393c | 116 | #endif /* STM32F40xxx || STM32F41xxx || STM32F42xxx || STM32F43xxx || STM32F446xx */ |
| mbed_official | 553:063b9f2f393c | 117 | |
| mbed_official | 553:063b9f2f393c | 118 | #if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx)\ |
| mbed_official | 553:063b9f2f393c | 119 | || defined(STM32F446xx) |
| mbed_official | 553:063b9f2f393c | 120 | /* #define DATA_IN_ExtSDRAM */ |
| mbed_official | 553:063b9f2f393c | 121 | #endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F446xx */ |
| mbed_official | 553:063b9f2f393c | 122 | |
| mbed_official | 553:063b9f2f393c | 123 | #if defined(DATA_IN_ExtSRAM) && defined(DATA_IN_ExtSDRAM) |
| mbed_official | 553:063b9f2f393c | 124 | #error "Please select DATA_IN_ExtSRAM or DATA_IN_ExtSDRAM " |
| mbed_official | 553:063b9f2f393c | 125 | #endif /* DATA_IN_ExtSRAM && DATA_IN_ExtSDRAM */ |
| mbed_official | 553:063b9f2f393c | 126 | |
| mbed_official | 553:063b9f2f393c | 127 | /*!< Uncomment the following line if you need to relocate your vector Table in |
| mbed_official | 553:063b9f2f393c | 128 | Internal SRAM. */ |
| mbed_official | 553:063b9f2f393c | 129 | /* #define VECT_TAB_SRAM */ |
| mbed_official | 553:063b9f2f393c | 130 | #define VECT_TAB_OFFSET 0x00 /*!< Vector Table base offset field. |
| mbed_official | 553:063b9f2f393c | 131 | This value must be a multiple of 0x200. */ |
| mbed_official | 553:063b9f2f393c | 132 | /******************************************************************************/ |
| mbed_official | 553:063b9f2f393c | 133 | |
| mbed_official | 553:063b9f2f393c | 134 | /** |
| mbed_official | 553:063b9f2f393c | 135 | * @} |
| mbed_official | 553:063b9f2f393c | 136 | */ |
| mbed_official | 553:063b9f2f393c | 137 | |
| mbed_official | 553:063b9f2f393c | 138 | /** @addtogroup STM32F4xx_System_Private_Macros |
| mbed_official | 553:063b9f2f393c | 139 | * @{ |
| mbed_official | 553:063b9f2f393c | 140 | */ |
| mbed_official | 553:063b9f2f393c | 141 | |
| mbed_official | 553:063b9f2f393c | 142 | /* Select the clock sources (other than HSI) to start with (0=OFF, 1=ON) */ |
| mbed_official | 553:063b9f2f393c | 143 | #define USE_PLL_HSE_EXTC (1) /* Use external clock */ |
| mbed_official | 553:063b9f2f393c | 144 | #define USE_PLL_HSE_XTAL (0) /* Use external xtal */ |
| mbed_official | 553:063b9f2f393c | 145 | |
| mbed_official | 553:063b9f2f393c | 146 | /** |
| mbed_official | 553:063b9f2f393c | 147 | * @} |
| mbed_official | 553:063b9f2f393c | 148 | */ |
| mbed_official | 553:063b9f2f393c | 149 | |
| mbed_official | 553:063b9f2f393c | 150 | /** @addtogroup STM32F4xx_System_Private_Variables |
| mbed_official | 553:063b9f2f393c | 151 | * @{ |
| mbed_official | 553:063b9f2f393c | 152 | */ |
| mbed_official | 553:063b9f2f393c | 153 | /* This variable is updated in three ways: |
| mbed_official | 553:063b9f2f393c | 154 | 1) by calling CMSIS function SystemCoreClockUpdate() |
| mbed_official | 553:063b9f2f393c | 155 | 2) by calling HAL API function HAL_RCC_GetHCLKFreq() |
| mbed_official | 553:063b9f2f393c | 156 | 3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency |
| mbed_official | 553:063b9f2f393c | 157 | Note: If you use this function to configure the system clock; then there |
| mbed_official | 553:063b9f2f393c | 158 | is no need to call the 2 first functions listed above, since SystemCoreClock |
| mbed_official | 553:063b9f2f393c | 159 | variable is updated automatically. |
| mbed_official | 553:063b9f2f393c | 160 | */ |
| mbed_official | 553:063b9f2f393c | 161 | uint32_t SystemCoreClock = 18000000; |
| mbed_official | 553:063b9f2f393c | 162 | __IO const uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9}; |
| mbed_official | 553:063b9f2f393c | 163 | |
| mbed_official | 553:063b9f2f393c | 164 | /** |
| mbed_official | 553:063b9f2f393c | 165 | * @} |
| mbed_official | 553:063b9f2f393c | 166 | */ |
| mbed_official | 553:063b9f2f393c | 167 | |
| mbed_official | 553:063b9f2f393c | 168 | /** @addtogroup STM32F4xx_System_Private_FunctionPrototypes |
| mbed_official | 553:063b9f2f393c | 169 | * @{ |
| mbed_official | 553:063b9f2f393c | 170 | */ |
| mbed_official | 553:063b9f2f393c | 171 | |
| mbed_official | 553:063b9f2f393c | 172 | #if defined (DATA_IN_ExtSRAM) || defined (DATA_IN_ExtSDRAM) |
| mbed_official | 553:063b9f2f393c | 173 | static void SystemInit_ExtMemCtl(void); |
| mbed_official | 553:063b9f2f393c | 174 | #endif /* DATA_IN_ExtSRAM || DATA_IN_ExtSDRAM */ |
| mbed_official | 553:063b9f2f393c | 175 | |
| mbed_official | 553:063b9f2f393c | 176 | #if (USE_PLL_HSE_XTAL != 0) || (USE_PLL_HSE_EXTC != 0) |
| mbed_official | 553:063b9f2f393c | 177 | uint8_t SetSysClock_PLL_HSE(uint8_t bypass); |
| mbed_official | 553:063b9f2f393c | 178 | #endif |
| mbed_official | 553:063b9f2f393c | 179 | |
| mbed_official | 553:063b9f2f393c | 180 | uint8_t SetSysClock_PLL_HSI(void); |
| mbed_official | 553:063b9f2f393c | 181 | |
| mbed_official | 553:063b9f2f393c | 182 | /** |
| mbed_official | 553:063b9f2f393c | 183 | * @} |
| mbed_official | 553:063b9f2f393c | 184 | */ |
| mbed_official | 553:063b9f2f393c | 185 | |
| mbed_official | 553:063b9f2f393c | 186 | /** @addtogroup STM32F4xx_System_Private_Functions |
| mbed_official | 553:063b9f2f393c | 187 | * @{ |
| mbed_official | 553:063b9f2f393c | 188 | */ |
| mbed_official | 553:063b9f2f393c | 189 | |
| mbed_official | 553:063b9f2f393c | 190 | /** |
| mbed_official | 553:063b9f2f393c | 191 | * @brief Setup the microcontroller system |
| mbed_official | 553:063b9f2f393c | 192 | * Initialize the FPU setting, vector table location and External memory |
| mbed_official | 553:063b9f2f393c | 193 | * configuration. |
| mbed_official | 553:063b9f2f393c | 194 | * @param None |
| mbed_official | 553:063b9f2f393c | 195 | * @retval None |
| mbed_official | 553:063b9f2f393c | 196 | */ |
| mbed_official | 553:063b9f2f393c | 197 | void SystemInit(void) |
| mbed_official | 553:063b9f2f393c | 198 | { |
| mbed_official | 553:063b9f2f393c | 199 | /* FPU settings ------------------------------------------------------------*/ |
| mbed_official | 553:063b9f2f393c | 200 | #if (__FPU_PRESENT == 1) && (__FPU_USED == 1) |
| mbed_official | 553:063b9f2f393c | 201 | SCB->CPACR |= ((3UL << 10*2)|(3UL << 11*2)); /* set CP10 and CP11 Full Access */ |
| mbed_official | 553:063b9f2f393c | 202 | #endif |
| mbed_official | 553:063b9f2f393c | 203 | /* Reset the RCC clock configuration to the default reset state ------------*/ |
| mbed_official | 553:063b9f2f393c | 204 | /* Set HSION bit */ |
| mbed_official | 553:063b9f2f393c | 205 | RCC->CR |= (uint32_t)0x00000001; |
| mbed_official | 553:063b9f2f393c | 206 | |
| mbed_official | 553:063b9f2f393c | 207 | /* Reset CFGR register */ |
| mbed_official | 553:063b9f2f393c | 208 | RCC->CFGR = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 209 | |
| mbed_official | 553:063b9f2f393c | 210 | /* Reset HSEON, CSSON and PLLON bits */ |
| mbed_official | 553:063b9f2f393c | 211 | RCC->CR &= (uint32_t)0xFEF6FFFF; |
| mbed_official | 553:063b9f2f393c | 212 | |
| mbed_official | 553:063b9f2f393c | 213 | /* Reset PLLCFGR register */ |
| mbed_official | 553:063b9f2f393c | 214 | RCC->PLLCFGR = 0x24003010; |
| mbed_official | 553:063b9f2f393c | 215 | |
| mbed_official | 553:063b9f2f393c | 216 | /* Reset HSEBYP bit */ |
| mbed_official | 553:063b9f2f393c | 217 | RCC->CR &= (uint32_t)0xFFFBFFFF; |
| mbed_official | 553:063b9f2f393c | 218 | |
| mbed_official | 553:063b9f2f393c | 219 | /* Disable all interrupts */ |
| mbed_official | 553:063b9f2f393c | 220 | RCC->CIR = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 221 | |
| mbed_official | 553:063b9f2f393c | 222 | #if defined (DATA_IN_ExtSRAM) || defined (DATA_IN_ExtSDRAM) |
| mbed_official | 553:063b9f2f393c | 223 | SystemInit_ExtMemCtl(); |
| mbed_official | 553:063b9f2f393c | 224 | #endif /* DATA_IN_ExtSRAM || DATA_IN_ExtSDRAM */ |
| mbed_official | 553:063b9f2f393c | 225 | |
| mbed_official | 553:063b9f2f393c | 226 | /* Configure the Vector Table location add offset address ------------------*/ |
| mbed_official | 553:063b9f2f393c | 227 | #ifdef VECT_TAB_SRAM |
| mbed_official | 553:063b9f2f393c | 228 | SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM */ |
| mbed_official | 553:063b9f2f393c | 229 | #else |
| mbed_official | 553:063b9f2f393c | 230 | SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH */ |
| mbed_official | 553:063b9f2f393c | 231 | #endif |
| mbed_official | 553:063b9f2f393c | 232 | |
| mbed_official | 553:063b9f2f393c | 233 | /* Configure the Cube driver */ |
| mbed_official | 553:063b9f2f393c | 234 | SystemCoreClock = 18000000; // At this stage the HSI is used as system clock |
| mbed_official | 553:063b9f2f393c | 235 | HAL_Init(); |
| mbed_official | 553:063b9f2f393c | 236 | |
| mbed_official | 553:063b9f2f393c | 237 | /* Configure the System clock source, PLL Multiplier and Divider factors, |
| mbed_official | 553:063b9f2f393c | 238 | AHB/APBx prescalers and Flash settings */ |
| mbed_official | 553:063b9f2f393c | 239 | SetSysClock(); |
| mbed_official | 553:063b9f2f393c | 240 | |
| mbed_official | 553:063b9f2f393c | 241 | /* Reset the timer to avoid issues after the RAM initialization */ |
| mbed_official | 553:063b9f2f393c | 242 | TIM_MST_RESET_ON; |
| mbed_official | 553:063b9f2f393c | 243 | TIM_MST_RESET_OFF; |
| mbed_official | 553:063b9f2f393c | 244 | } |
| mbed_official | 553:063b9f2f393c | 245 | |
| mbed_official | 553:063b9f2f393c | 246 | /** |
| mbed_official | 553:063b9f2f393c | 247 | * @brief Update SystemCoreClock variable according to Clock Register Values. |
| mbed_official | 553:063b9f2f393c | 248 | * The SystemCoreClock variable contains the core clock (HCLK), it can |
| mbed_official | 553:063b9f2f393c | 249 | * be used by the user application to setup the SysTick timer or configure |
| mbed_official | 553:063b9f2f393c | 250 | * other parameters. |
| mbed_official | 553:063b9f2f393c | 251 | * |
| mbed_official | 553:063b9f2f393c | 252 | * @note Each time the core clock (HCLK) changes, this function must be called |
| mbed_official | 553:063b9f2f393c | 253 | * to update SystemCoreClock variable value. Otherwise, any configuration |
| mbed_official | 553:063b9f2f393c | 254 | * based on this variable will be incorrect. |
| mbed_official | 553:063b9f2f393c | 255 | * |
| mbed_official | 553:063b9f2f393c | 256 | * @note - The system frequency computed by this function is not the real |
| mbed_official | 553:063b9f2f393c | 257 | * frequency in the chip. It is calculated based on the predefined |
| mbed_official | 553:063b9f2f393c | 258 | * constant and the selected clock source: |
| mbed_official | 553:063b9f2f393c | 259 | * |
| mbed_official | 553:063b9f2f393c | 260 | * - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*) |
| mbed_official | 553:063b9f2f393c | 261 | * |
| mbed_official | 553:063b9f2f393c | 262 | * - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**) |
| mbed_official | 553:063b9f2f393c | 263 | * |
| mbed_official | 553:063b9f2f393c | 264 | * - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**) |
| mbed_official | 553:063b9f2f393c | 265 | * or HSI_VALUE(*) multiplied/divided by the PLL factors. |
| mbed_official | 553:063b9f2f393c | 266 | * |
| mbed_official | 553:063b9f2f393c | 267 | * (*) HSI_VALUE is a constant defined in stm32f4xx_hal_conf.h file (default value |
| mbed_official | 553:063b9f2f393c | 268 | * 16 MHz) but the real value may vary depending on the variations |
| mbed_official | 553:063b9f2f393c | 269 | * in voltage and temperature. |
| mbed_official | 553:063b9f2f393c | 270 | * |
| mbed_official | 553:063b9f2f393c | 271 | * (**) HSE_VALUE is a constant defined in stm32f4xx_hal_conf.h file (its value |
| mbed_official | 553:063b9f2f393c | 272 | * depends on the application requirements), user has to ensure that HSE_VALUE |
| mbed_official | 553:063b9f2f393c | 273 | * is same as the real frequency of the crystal used. Otherwise, this function |
| mbed_official | 553:063b9f2f393c | 274 | * may have wrong result. |
| mbed_official | 553:063b9f2f393c | 275 | * |
| mbed_official | 553:063b9f2f393c | 276 | * - The result of this function could be not correct when using fractional |
| mbed_official | 553:063b9f2f393c | 277 | * value for HSE crystal. |
| mbed_official | 553:063b9f2f393c | 278 | * |
| mbed_official | 553:063b9f2f393c | 279 | * @param None |
| mbed_official | 553:063b9f2f393c | 280 | * @retval None |
| mbed_official | 553:063b9f2f393c | 281 | */ |
| mbed_official | 553:063b9f2f393c | 282 | void SystemCoreClockUpdate(void) |
| mbed_official | 553:063b9f2f393c | 283 | { |
| mbed_official | 553:063b9f2f393c | 284 | uint32_t tmp = 0, pllvco = 0, pllp = 2, pllsource = 0, pllm = 2; |
| mbed_official | 553:063b9f2f393c | 285 | |
| mbed_official | 553:063b9f2f393c | 286 | /* Get SYSCLK source -------------------------------------------------------*/ |
| mbed_official | 553:063b9f2f393c | 287 | tmp = RCC->CFGR & RCC_CFGR_SWS; |
| mbed_official | 553:063b9f2f393c | 288 | |
| mbed_official | 553:063b9f2f393c | 289 | switch (tmp) |
| mbed_official | 553:063b9f2f393c | 290 | { |
| mbed_official | 553:063b9f2f393c | 291 | case 0x00: /* HSI used as system clock source */ |
| mbed_official | 553:063b9f2f393c | 292 | SystemCoreClock = HSI_VALUE; |
| mbed_official | 553:063b9f2f393c | 293 | break; |
| mbed_official | 553:063b9f2f393c | 294 | case 0x04: /* HSE used as system clock source */ |
| mbed_official | 553:063b9f2f393c | 295 | SystemCoreClock = HSE_VALUE; |
| mbed_official | 553:063b9f2f393c | 296 | break; |
| mbed_official | 553:063b9f2f393c | 297 | case 0x08: /* PLL used as system clock source */ |
| mbed_official | 553:063b9f2f393c | 298 | |
| mbed_official | 553:063b9f2f393c | 299 | /* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLL_M) * PLL_N |
| mbed_official | 553:063b9f2f393c | 300 | SYSCLK = PLL_VCO / PLL_P |
| mbed_official | 553:063b9f2f393c | 301 | */ |
| mbed_official | 553:063b9f2f393c | 302 | pllsource = (RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) >> 22; |
| mbed_official | 553:063b9f2f393c | 303 | pllm = RCC->PLLCFGR & RCC_PLLCFGR_PLLM; |
| mbed_official | 553:063b9f2f393c | 304 | |
| mbed_official | 553:063b9f2f393c | 305 | if (pllsource != 0) |
| mbed_official | 553:063b9f2f393c | 306 | { |
| mbed_official | 553:063b9f2f393c | 307 | /* HSE used as PLL clock source */ |
| mbed_official | 553:063b9f2f393c | 308 | pllvco = (HSE_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> 6); |
| mbed_official | 553:063b9f2f393c | 309 | } |
| mbed_official | 553:063b9f2f393c | 310 | else |
| mbed_official | 553:063b9f2f393c | 311 | { |
| mbed_official | 553:063b9f2f393c | 312 | /* HSI used as PLL clock source */ |
| mbed_official | 553:063b9f2f393c | 313 | pllvco = (HSI_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> 6); |
| mbed_official | 553:063b9f2f393c | 314 | } |
| mbed_official | 553:063b9f2f393c | 315 | |
| mbed_official | 553:063b9f2f393c | 316 | pllp = (((RCC->PLLCFGR & RCC_PLLCFGR_PLLP) >>16) + 1 ) *2; |
| mbed_official | 553:063b9f2f393c | 317 | SystemCoreClock = pllvco/pllp; |
| mbed_official | 553:063b9f2f393c | 318 | break; |
| mbed_official | 553:063b9f2f393c | 319 | default: |
| mbed_official | 553:063b9f2f393c | 320 | SystemCoreClock = HSI_VALUE; |
| mbed_official | 553:063b9f2f393c | 321 | break; |
| mbed_official | 553:063b9f2f393c | 322 | } |
| mbed_official | 553:063b9f2f393c | 323 | /* Compute HCLK frequency --------------------------------------------------*/ |
| mbed_official | 553:063b9f2f393c | 324 | /* Get HCLK prescaler */ |
| mbed_official | 553:063b9f2f393c | 325 | tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4)]; |
| mbed_official | 553:063b9f2f393c | 326 | /* HCLK frequency */ |
| mbed_official | 553:063b9f2f393c | 327 | SystemCoreClock >>= tmp; |
| mbed_official | 553:063b9f2f393c | 328 | } |
| mbed_official | 553:063b9f2f393c | 329 | |
| mbed_official | 553:063b9f2f393c | 330 | #if defined (DATA_IN_ExtSRAM) || defined (DATA_IN_ExtSDRAM) |
| mbed_official | 553:063b9f2f393c | 331 | /** |
| mbed_official | 553:063b9f2f393c | 332 | * @brief Setup the external memory controller. |
| mbed_official | 553:063b9f2f393c | 333 | * Called in startup_stm32f4xx.s before jump to main. |
| mbed_official | 553:063b9f2f393c | 334 | * This function configures the external memories (SRAM/SDRAM) |
| mbed_official | 553:063b9f2f393c | 335 | * This SRAM/SDRAM will be used as program data memory (including heap and stack). |
| mbed_official | 553:063b9f2f393c | 336 | * @param None |
| mbed_official | 553:063b9f2f393c | 337 | * @retval None |
| mbed_official | 553:063b9f2f393c | 338 | */ |
| mbed_official | 553:063b9f2f393c | 339 | void SystemInit_ExtMemCtl(void) |
| mbed_official | 553:063b9f2f393c | 340 | { |
| mbed_official | 553:063b9f2f393c | 341 | #if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) || defined(STM32F446xx) |
| mbed_official | 553:063b9f2f393c | 342 | #if defined (DATA_IN_ExtSDRAM) |
| mbed_official | 553:063b9f2f393c | 343 | register uint32_t tmpreg = 0, timeout = 0xFFFF; |
| mbed_official | 553:063b9f2f393c | 344 | register uint32_t index; |
| mbed_official | 553:063b9f2f393c | 345 | |
| mbed_official | 553:063b9f2f393c | 346 | /* Enable GPIOC, GPIOD, GPIOE, GPIOF, GPIOG, GPIOH and GPIOI interface |
| mbed_official | 553:063b9f2f393c | 347 | clock */ |
| mbed_official | 553:063b9f2f393c | 348 | RCC->AHB1ENR |= 0x000001F8; |
| mbed_official | 553:063b9f2f393c | 349 | |
| mbed_official | 553:063b9f2f393c | 350 | /* Connect PDx pins to FMC Alternate function */ |
| mbed_official | 553:063b9f2f393c | 351 | GPIOD->AFR[0] = 0x000000CC; |
| mbed_official | 553:063b9f2f393c | 352 | GPIOD->AFR[1] = 0xCC000CCC; |
| mbed_official | 553:063b9f2f393c | 353 | /* Configure PDx pins in Alternate function mode */ |
| mbed_official | 553:063b9f2f393c | 354 | GPIOD->MODER = 0xA02A000A; |
| mbed_official | 553:063b9f2f393c | 355 | /* Configure PDx pins speed to 50 MHz */ |
| mbed_official | 553:063b9f2f393c | 356 | GPIOD->OSPEEDR = 0xA02A000A; |
| mbed_official | 553:063b9f2f393c | 357 | /* Configure PDx pins Output type to push-pull */ |
| mbed_official | 553:063b9f2f393c | 358 | GPIOD->OTYPER = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 359 | /* No pull-up, pull-down for PDx pins */ |
| mbed_official | 553:063b9f2f393c | 360 | GPIOD->PUPDR = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 361 | |
| mbed_official | 553:063b9f2f393c | 362 | /* Connect PEx pins to FMC Alternate function */ |
| mbed_official | 553:063b9f2f393c | 363 | GPIOE->AFR[0] = 0xC00000CC; |
| mbed_official | 553:063b9f2f393c | 364 | GPIOE->AFR[1] = 0xCCCCCCCC; |
| mbed_official | 553:063b9f2f393c | 365 | /* Configure PEx pins in Alternate function mode */ |
| mbed_official | 553:063b9f2f393c | 366 | GPIOE->MODER = 0xAAAA800A; |
| mbed_official | 553:063b9f2f393c | 367 | /* Configure PEx pins speed to 50 MHz */ |
| mbed_official | 553:063b9f2f393c | 368 | GPIOE->OSPEEDR = 0xAAAA800A; |
| mbed_official | 553:063b9f2f393c | 369 | /* Configure PEx pins Output type to push-pull */ |
| mbed_official | 553:063b9f2f393c | 370 | GPIOE->OTYPER = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 371 | /* No pull-up, pull-down for PEx pins */ |
| mbed_official | 553:063b9f2f393c | 372 | GPIOE->PUPDR = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 373 | |
| mbed_official | 553:063b9f2f393c | 374 | /* Connect PFx pins to FMC Alternate function */ |
| mbed_official | 553:063b9f2f393c | 375 | GPIOF->AFR[0] = 0xCCCCCCCC; |
| mbed_official | 553:063b9f2f393c | 376 | GPIOF->AFR[1] = 0xCCCCCCCC; |
| mbed_official | 553:063b9f2f393c | 377 | /* Configure PFx pins in Alternate function mode */ |
| mbed_official | 553:063b9f2f393c | 378 | GPIOF->MODER = 0xAA800AAA; |
| mbed_official | 553:063b9f2f393c | 379 | /* Configure PFx pins speed to 50 MHz */ |
| mbed_official | 553:063b9f2f393c | 380 | GPIOF->OSPEEDR = 0xAA800AAA; |
| mbed_official | 553:063b9f2f393c | 381 | /* Configure PFx pins Output type to push-pull */ |
| mbed_official | 553:063b9f2f393c | 382 | GPIOF->OTYPER = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 383 | /* No pull-up, pull-down for PFx pins */ |
| mbed_official | 553:063b9f2f393c | 384 | GPIOF->PUPDR = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 385 | |
| mbed_official | 553:063b9f2f393c | 386 | /* Connect PGx pins to FMC Alternate function */ |
| mbed_official | 553:063b9f2f393c | 387 | GPIOG->AFR[0] = 0xCCCCCCCC; |
| mbed_official | 553:063b9f2f393c | 388 | GPIOG->AFR[1] = 0xCCCCCCCC; |
| mbed_official | 553:063b9f2f393c | 389 | /* Configure PGx pins in Alternate function mode */ |
| mbed_official | 553:063b9f2f393c | 390 | GPIOG->MODER = 0xAAAAAAAA; |
| mbed_official | 553:063b9f2f393c | 391 | /* Configure PGx pins speed to 50 MHz */ |
| mbed_official | 553:063b9f2f393c | 392 | GPIOG->OSPEEDR = 0xAAAAAAAA; |
| mbed_official | 553:063b9f2f393c | 393 | /* Configure PGx pins Output type to push-pull */ |
| mbed_official | 553:063b9f2f393c | 394 | GPIOG->OTYPER = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 395 | /* No pull-up, pull-down for PGx pins */ |
| mbed_official | 553:063b9f2f393c | 396 | GPIOG->PUPDR = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 397 | |
| mbed_official | 553:063b9f2f393c | 398 | /* Connect PHx pins to FMC Alternate function */ |
| mbed_official | 553:063b9f2f393c | 399 | GPIOH->AFR[0] = 0x00C0CC00; |
| mbed_official | 553:063b9f2f393c | 400 | GPIOH->AFR[1] = 0xCCCCCCCC; |
| mbed_official | 553:063b9f2f393c | 401 | /* Configure PHx pins in Alternate function mode */ |
| mbed_official | 553:063b9f2f393c | 402 | GPIOH->MODER = 0xAAAA08A0; |
| mbed_official | 553:063b9f2f393c | 403 | /* Configure PHx pins speed to 50 MHz */ |
| mbed_official | 553:063b9f2f393c | 404 | GPIOH->OSPEEDR = 0xAAAA08A0; |
| mbed_official | 553:063b9f2f393c | 405 | /* Configure PHx pins Output type to push-pull */ |
| mbed_official | 553:063b9f2f393c | 406 | GPIOH->OTYPER = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 407 | /* No pull-up, pull-down for PHx pins */ |
| mbed_official | 553:063b9f2f393c | 408 | GPIOH->PUPDR = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 409 | |
| mbed_official | 553:063b9f2f393c | 410 | /* Connect PIx pins to FMC Alternate function */ |
| mbed_official | 553:063b9f2f393c | 411 | GPIOI->AFR[0] = 0xCCCCCCCC; |
| mbed_official | 553:063b9f2f393c | 412 | GPIOI->AFR[1] = 0x00000CC0; |
| mbed_official | 553:063b9f2f393c | 413 | /* Configure PIx pins in Alternate function mode */ |
| mbed_official | 553:063b9f2f393c | 414 | GPIOI->MODER = 0x0028AAAA; |
| mbed_official | 553:063b9f2f393c | 415 | /* Configure PIx pins speed to 50 MHz */ |
| mbed_official | 553:063b9f2f393c | 416 | GPIOI->OSPEEDR = 0x0028AAAA; |
| mbed_official | 553:063b9f2f393c | 417 | /* Configure PIx pins Output type to push-pull */ |
| mbed_official | 553:063b9f2f393c | 418 | GPIOI->OTYPER = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 419 | /* No pull-up, pull-down for PIx pins */ |
| mbed_official | 553:063b9f2f393c | 420 | GPIOI->PUPDR = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 421 | |
| mbed_official | 553:063b9f2f393c | 422 | /*-- FMC Configuration ------------------------------------------------------*/ |
| mbed_official | 553:063b9f2f393c | 423 | /* Enable the FMC interface clock */ |
| mbed_official | 553:063b9f2f393c | 424 | RCC->AHB3ENR |= 0x00000001; |
| mbed_official | 553:063b9f2f393c | 425 | |
| mbed_official | 553:063b9f2f393c | 426 | /* Configure and enable SDRAM bank1 */ |
| mbed_official | 553:063b9f2f393c | 427 | FMC_Bank5_6->SDCR[0] = 0x000019E4; |
| mbed_official | 553:063b9f2f393c | 428 | FMC_Bank5_6->SDTR[0] = 0x01115351; |
| mbed_official | 553:063b9f2f393c | 429 | |
| mbed_official | 553:063b9f2f393c | 430 | /* SDRAM initialization sequence */ |
| mbed_official | 553:063b9f2f393c | 431 | /* Clock enable command */ |
| mbed_official | 553:063b9f2f393c | 432 | FMC_Bank5_6->SDCMR = 0x00000011; |
| mbed_official | 553:063b9f2f393c | 433 | tmpreg = FMC_Bank5_6->SDSR & 0x00000020; |
| mbed_official | 553:063b9f2f393c | 434 | while((tmpreg != 0) && (timeout-- > 0)) |
| mbed_official | 553:063b9f2f393c | 435 | { |
| mbed_official | 553:063b9f2f393c | 436 | tmpreg = FMC_Bank5_6->SDSR & 0x00000020; |
| mbed_official | 553:063b9f2f393c | 437 | } |
| mbed_official | 553:063b9f2f393c | 438 | |
| mbed_official | 553:063b9f2f393c | 439 | /* Delay */ |
| mbed_official | 553:063b9f2f393c | 440 | for (index = 0; index<1000; index++); |
| mbed_official | 553:063b9f2f393c | 441 | |
| mbed_official | 553:063b9f2f393c | 442 | /* PALL command */ |
| mbed_official | 553:063b9f2f393c | 443 | FMC_Bank5_6->SDCMR = 0x00000012; |
| mbed_official | 553:063b9f2f393c | 444 | timeout = 0xFFFF; |
| mbed_official | 553:063b9f2f393c | 445 | while((tmpreg != 0) && (timeout-- > 0)) |
| mbed_official | 553:063b9f2f393c | 446 | { |
| mbed_official | 553:063b9f2f393c | 447 | tmpreg = FMC_Bank5_6->SDSR & 0x00000020; |
| mbed_official | 553:063b9f2f393c | 448 | } |
| mbed_official | 553:063b9f2f393c | 449 | |
| mbed_official | 553:063b9f2f393c | 450 | /* Auto refresh command */ |
| mbed_official | 553:063b9f2f393c | 451 | FMC_Bank5_6->SDCMR = 0x00000073; |
| mbed_official | 553:063b9f2f393c | 452 | timeout = 0xFFFF; |
| mbed_official | 553:063b9f2f393c | 453 | while((tmpreg != 0) && (timeout-- > 0)) |
| mbed_official | 553:063b9f2f393c | 454 | { |
| mbed_official | 553:063b9f2f393c | 455 | tmpreg = FMC_Bank5_6->SDSR & 0x00000020; |
| mbed_official | 553:063b9f2f393c | 456 | } |
| mbed_official | 553:063b9f2f393c | 457 | |
| mbed_official | 553:063b9f2f393c | 458 | /* MRD register program */ |
| mbed_official | 553:063b9f2f393c | 459 | FMC_Bank5_6->SDCMR = 0x00046014; |
| mbed_official | 553:063b9f2f393c | 460 | timeout = 0xFFFF; |
| mbed_official | 553:063b9f2f393c | 461 | while((tmpreg != 0) && (timeout-- > 0)) |
| mbed_official | 553:063b9f2f393c | 462 | { |
| mbed_official | 553:063b9f2f393c | 463 | tmpreg = FMC_Bank5_6->SDSR & 0x00000020; |
| mbed_official | 553:063b9f2f393c | 464 | } |
| mbed_official | 553:063b9f2f393c | 465 | |
| mbed_official | 553:063b9f2f393c | 466 | /* Set refresh count */ |
| mbed_official | 553:063b9f2f393c | 467 | tmpreg = FMC_Bank5_6->SDRTR; |
| mbed_official | 553:063b9f2f393c | 468 | FMC_Bank5_6->SDRTR = (tmpreg | (0x0000027C<<1)); |
| mbed_official | 553:063b9f2f393c | 469 | |
| mbed_official | 553:063b9f2f393c | 470 | /* Disable write protection */ |
| mbed_official | 553:063b9f2f393c | 471 | tmpreg = FMC_Bank5_6->SDCR[0]; |
| mbed_official | 553:063b9f2f393c | 472 | FMC_Bank5_6->SDCR[0] = (tmpreg & 0xFFFFFDFF); |
| mbed_official | 553:063b9f2f393c | 473 | #endif /* DATA_IN_ExtSDRAM */ |
| mbed_official | 553:063b9f2f393c | 474 | #endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F446xx */ |
| mbed_official | 553:063b9f2f393c | 475 | |
| mbed_official | 553:063b9f2f393c | 476 | #if defined(STM32F405xx) || defined(STM32F415xx) || defined(STM32F407xx) || defined(STM32F417xx)\ |
| mbed_official | 553:063b9f2f393c | 477 | || defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx)\ |
| mbed_official | 553:063b9f2f393c | 478 | || defined(STM32F446xx) |
| mbed_official | 553:063b9f2f393c | 479 | |
| mbed_official | 553:063b9f2f393c | 480 | #if defined(DATA_IN_ExtSRAM) |
| mbed_official | 553:063b9f2f393c | 481 | /*-- GPIOs Configuration -----------------------------------------------------*/ |
| mbed_official | 553:063b9f2f393c | 482 | /* Enable GPIOD, GPIOE, GPIOF and GPIOG interface clock */ |
| mbed_official | 553:063b9f2f393c | 483 | RCC->AHB1ENR |= 0x00000078; |
| mbed_official | 553:063b9f2f393c | 484 | |
| mbed_official | 553:063b9f2f393c | 485 | /* Connect PDx pins to FMC Alternate function */ |
| mbed_official | 553:063b9f2f393c | 486 | GPIOD->AFR[0] = 0x00CCC0CC; |
| mbed_official | 553:063b9f2f393c | 487 | GPIOD->AFR[1] = 0xCCCCCCCC; |
| mbed_official | 553:063b9f2f393c | 488 | /* Configure PDx pins in Alternate function mode */ |
| mbed_official | 553:063b9f2f393c | 489 | GPIOD->MODER = 0xAAAA0A8A; |
| mbed_official | 553:063b9f2f393c | 490 | /* Configure PDx pins speed to 100 MHz */ |
| mbed_official | 553:063b9f2f393c | 491 | GPIOD->OSPEEDR = 0xFFFF0FCF; |
| mbed_official | 553:063b9f2f393c | 492 | /* Configure PDx pins Output type to push-pull */ |
| mbed_official | 553:063b9f2f393c | 493 | GPIOD->OTYPER = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 494 | /* No pull-up, pull-down for PDx pins */ |
| mbed_official | 553:063b9f2f393c | 495 | GPIOD->PUPDR = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 496 | |
| mbed_official | 553:063b9f2f393c | 497 | /* Connect PEx pins to FMC Alternate function */ |
| mbed_official | 553:063b9f2f393c | 498 | GPIOE->AFR[0] = 0xC00CC0CC; |
| mbed_official | 553:063b9f2f393c | 499 | GPIOE->AFR[1] = 0xCCCCCCCC; |
| mbed_official | 553:063b9f2f393c | 500 | /* Configure PEx pins in Alternate function mode */ |
| mbed_official | 553:063b9f2f393c | 501 | GPIOE->MODER = 0xAAAA828A; |
| mbed_official | 553:063b9f2f393c | 502 | /* Configure PEx pins speed to 100 MHz */ |
| mbed_official | 553:063b9f2f393c | 503 | GPIOE->OSPEEDR = 0xFFFFC3CF; |
| mbed_official | 553:063b9f2f393c | 504 | /* Configure PEx pins Output type to push-pull */ |
| mbed_official | 553:063b9f2f393c | 505 | GPIOE->OTYPER = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 506 | /* No pull-up, pull-down for PEx pins */ |
| mbed_official | 553:063b9f2f393c | 507 | GPIOE->PUPDR = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 508 | |
| mbed_official | 553:063b9f2f393c | 509 | /* Connect PFx pins to FMC Alternate function */ |
| mbed_official | 553:063b9f2f393c | 510 | GPIOF->AFR[0] = 0x00CCCCCC; |
| mbed_official | 553:063b9f2f393c | 511 | GPIOF->AFR[1] = 0xCCCC0000; |
| mbed_official | 553:063b9f2f393c | 512 | /* Configure PFx pins in Alternate function mode */ |
| mbed_official | 553:063b9f2f393c | 513 | GPIOF->MODER = 0xAA000AAA; |
| mbed_official | 553:063b9f2f393c | 514 | /* Configure PFx pins speed to 100 MHz */ |
| mbed_official | 553:063b9f2f393c | 515 | GPIOF->OSPEEDR = 0xFF000FFF; |
| mbed_official | 553:063b9f2f393c | 516 | /* Configure PFx pins Output type to push-pull */ |
| mbed_official | 553:063b9f2f393c | 517 | GPIOF->OTYPER = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 518 | /* No pull-up, pull-down for PFx pins */ |
| mbed_official | 553:063b9f2f393c | 519 | GPIOF->PUPDR = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 520 | |
| mbed_official | 553:063b9f2f393c | 521 | /* Connect PGx pins to FMC Alternate function */ |
| mbed_official | 553:063b9f2f393c | 522 | GPIOG->AFR[0] = 0x00CCCCCC; |
| mbed_official | 553:063b9f2f393c | 523 | GPIOG->AFR[1] = 0x000000C0; |
| mbed_official | 553:063b9f2f393c | 524 | /* Configure PGx pins in Alternate function mode */ |
| mbed_official | 553:063b9f2f393c | 525 | GPIOG->MODER = 0x00085AAA; |
| mbed_official | 553:063b9f2f393c | 526 | /* Configure PGx pins speed to 100 MHz */ |
| mbed_official | 553:063b9f2f393c | 527 | GPIOG->OSPEEDR = 0x000CAFFF; |
| mbed_official | 553:063b9f2f393c | 528 | /* Configure PGx pins Output type to push-pull */ |
| mbed_official | 553:063b9f2f393c | 529 | GPIOG->OTYPER = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 530 | /* No pull-up, pull-down for PGx pins */ |
| mbed_official | 553:063b9f2f393c | 531 | GPIOG->PUPDR = 0x00000000; |
| mbed_official | 553:063b9f2f393c | 532 | |
| mbed_official | 553:063b9f2f393c | 533 | /*-- FMC/FSMC Configuration --------------------------------------------------*/ |
| mbed_official | 553:063b9f2f393c | 534 | /* Enable the FMC/FSMC interface clock */ |
| mbed_official | 553:063b9f2f393c | 535 | RCC->AHB3ENR |= 0x00000001; |
| mbed_official | 553:063b9f2f393c | 536 | |
| mbed_official | 553:063b9f2f393c | 537 | #if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx)|| defined(STM32F439xx) || defined(STM32F446xx) |
| mbed_official | 553:063b9f2f393c | 538 | /* Configure and enable Bank1_SRAM2 */ |
| mbed_official | 553:063b9f2f393c | 539 | FMC_Bank1->BTCR[2] = 0x00001011; |
| mbed_official | 553:063b9f2f393c | 540 | FMC_Bank1->BTCR[3] = 0x00000201; |
| mbed_official | 553:063b9f2f393c | 541 | FMC_Bank1E->BWTR[2] = 0x0fffffff; |
| mbed_official | 553:063b9f2f393c | 542 | #endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F446xx || STM32F469xx */ |
| mbed_official | 553:063b9f2f393c | 543 | |
| mbed_official | 553:063b9f2f393c | 544 | #if defined(STM32F405xx) || defined(STM32F415xx) || defined(STM32F407xx)|| defined(STM32F417xx) |
| mbed_official | 553:063b9f2f393c | 545 | /* Configure and enable Bank1_SRAM2 */ |
| mbed_official | 553:063b9f2f393c | 546 | FSMC_Bank1->BTCR[2] = 0x00001011; |
| mbed_official | 553:063b9f2f393c | 547 | FSMC_Bank1->BTCR[3] = 0x00000201; |
| mbed_official | 553:063b9f2f393c | 548 | FSMC_Bank1E->BWTR[2] = 0x0FFFFFFF; |
| mbed_official | 553:063b9f2f393c | 549 | #endif /* STM32F405xx || STM32F415xx || STM32F407xx || STM32F417xx */ |
| mbed_official | 553:063b9f2f393c | 550 | |
| mbed_official | 553:063b9f2f393c | 551 | #endif /* DATA_IN_ExtSRAM */ |
| mbed_official | 553:063b9f2f393c | 552 | #endif /* STM32F405xx || STM32F415xx || STM32F407xx || STM32F417xx || STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F446xx */ |
| mbed_official | 553:063b9f2f393c | 553 | } |
| mbed_official | 553:063b9f2f393c | 554 | #endif /* DATA_IN_ExtSRAM || DATA_IN_ExtSDRAM */ |
| mbed_official | 553:063b9f2f393c | 555 | |
| mbed_official | 553:063b9f2f393c | 556 | /** |
| mbed_official | 553:063b9f2f393c | 557 | * @brief Configures the System clock source, PLL Multiplier and Divider factors, |
| mbed_official | 553:063b9f2f393c | 558 | * AHB/APBx prescalers and Flash settings |
| mbed_official | 553:063b9f2f393c | 559 | * @note This function should be called only once the RCC clock configuration |
| mbed_official | 553:063b9f2f393c | 560 | * is reset to the default reset state (done in SystemInit() function). |
| mbed_official | 553:063b9f2f393c | 561 | * @param None |
| mbed_official | 553:063b9f2f393c | 562 | * @retval None |
| mbed_official | 553:063b9f2f393c | 563 | */ |
| mbed_official | 553:063b9f2f393c | 564 | void SetSysClock(void) |
| mbed_official | 553:063b9f2f393c | 565 | { |
| mbed_official | 553:063b9f2f393c | 566 | /* 1- Try to start with HSE and external clock */ |
| mbed_official | 553:063b9f2f393c | 567 | #if USE_PLL_HSE_EXTC != 0 |
| mbed_official | 553:063b9f2f393c | 568 | if (SetSysClock_PLL_HSE(1) == 0) |
| mbed_official | 553:063b9f2f393c | 569 | #endif |
| mbed_official | 553:063b9f2f393c | 570 | { |
| mbed_official | 553:063b9f2f393c | 571 | /* 2- If fail try to start with HSE and external xtal */ |
| mbed_official | 553:063b9f2f393c | 572 | #if USE_PLL_HSE_XTAL != 0 |
| mbed_official | 553:063b9f2f393c | 573 | if (SetSysClock_PLL_HSE(0) == 0) |
| mbed_official | 553:063b9f2f393c | 574 | #endif |
| mbed_official | 553:063b9f2f393c | 575 | { |
| mbed_official | 553:063b9f2f393c | 576 | /* 3- If fail start with HSI clock */ |
| mbed_official | 553:063b9f2f393c | 577 | if (SetSysClock_PLL_HSI() == 0) |
| mbed_official | 553:063b9f2f393c | 578 | { |
| mbed_official | 553:063b9f2f393c | 579 | while(1) |
| mbed_official | 553:063b9f2f393c | 580 | { |
| mbed_official | 553:063b9f2f393c | 581 | // [TODO] Put something here to tell the user that a problem occured... |
| mbed_official | 553:063b9f2f393c | 582 | } |
| mbed_official | 553:063b9f2f393c | 583 | } |
| mbed_official | 553:063b9f2f393c | 584 | } |
| mbed_official | 553:063b9f2f393c | 585 | } |
| mbed_official | 553:063b9f2f393c | 586 | |
| mbed_official | 553:063b9f2f393c | 587 | /* Output clock on MCO2 pin(PC9) for debugging purpose */ |
| mbed_official | 553:063b9f2f393c | 588 | //HAL_RCC_MCOConfig(RCC_MCO2, RCC_MCO2SOURCE_SYSCLK, RCC_MCODIV_4); // 100 MHz / 4 = 25 MHz |
| mbed_official | 553:063b9f2f393c | 589 | } |
| mbed_official | 553:063b9f2f393c | 590 | |
| mbed_official | 553:063b9f2f393c | 591 | #if (USE_PLL_HSE_XTAL != 0) || (USE_PLL_HSE_EXTC != 0) |
| mbed_official | 553:063b9f2f393c | 592 | /******************************************************************************/ |
| mbed_official | 553:063b9f2f393c | 593 | /* PLL (clocked by HSE) used as System clock source */ |
| mbed_official | 553:063b9f2f393c | 594 | /******************************************************************************/ |
| mbed_official | 553:063b9f2f393c | 595 | uint8_t SetSysClock_PLL_HSE(uint8_t bypass) |
| mbed_official | 553:063b9f2f393c | 596 | { |
| mbed_official | 553:063b9f2f393c | 597 | RCC_ClkInitTypeDef RCC_ClkInitStruct; |
| mbed_official | 553:063b9f2f393c | 598 | RCC_OscInitTypeDef RCC_OscInitStruct; |
| mbed_official | 553:063b9f2f393c | 599 | |
| mbed_official | 553:063b9f2f393c | 600 | /* The voltage scaling allows optimizing the power consumption when the device is |
| mbed_official | 553:063b9f2f393c | 601 | clocked below the maximum system frequency, to update the voltage scaling value |
| mbed_official | 553:063b9f2f393c | 602 | regarding system frequency refer to product datasheet. */ |
| mbed_official | 553:063b9f2f393c | 603 | __PWR_CLK_ENABLE(); |
| mbed_official | 553:063b9f2f393c | 604 | __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); |
| mbed_official | 553:063b9f2f393c | 605 | |
| mbed_official | 553:063b9f2f393c | 606 | /* Enable HSE oscillator and activate PLL with HSE as source */ |
| mbed_official | 553:063b9f2f393c | 607 | RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; |
| mbed_official | 553:063b9f2f393c | 608 | if (bypass == 0) |
| mbed_official | 553:063b9f2f393c | 609 | { |
| mbed_official | 553:063b9f2f393c | 610 | RCC_OscInitStruct.HSEState = RCC_HSE_ON; /* External 8 MHz xtal on OSC_IN/OSC_OUT */ |
| mbed_official | 553:063b9f2f393c | 611 | } |
| mbed_official | 553:063b9f2f393c | 612 | else |
| mbed_official | 553:063b9f2f393c | 613 | { |
| mbed_official | 553:063b9f2f393c | 614 | RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS; /* External 8 MHz clock on OSC_IN */ |
| mbed_official | 553:063b9f2f393c | 615 | } |
| mbed_official | 553:063b9f2f393c | 616 | RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; |
| mbed_official | 553:063b9f2f393c | 617 | RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; |
| mbed_official | 553:063b9f2f393c | 618 | RCC_OscInitStruct.PLL.PLLM = 8; |
| mbed_official | 553:063b9f2f393c | 619 | RCC_OscInitStruct.PLL.PLLN = 360; |
| mbed_official | 553:063b9f2f393c | 620 | RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; |
| mbed_official | 553:063b9f2f393c | 621 | RCC_OscInitStruct.PLL.PLLQ = 7; |
| mbed_official | 553:063b9f2f393c | 622 | RCC_OscInitStruct.PLL.PLLR = 4; |
| mbed_official | 553:063b9f2f393c | 623 | if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) |
| mbed_official | 553:063b9f2f393c | 624 | { |
| mbed_official | 553:063b9f2f393c | 625 | return 0; // FAIL |
| mbed_official | 553:063b9f2f393c | 626 | } |
| mbed_official | 553:063b9f2f393c | 627 | |
| mbed_official | 553:063b9f2f393c | 628 | HAL_PWREx_ActivateOverDrive(); |
| mbed_official | 553:063b9f2f393c | 629 | |
| mbed_official | 553:063b9f2f393c | 630 | /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */ |
| mbed_official | 553:063b9f2f393c | 631 | RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2; |
| mbed_official | 553:063b9f2f393c | 632 | RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; |
| mbed_official | 553:063b9f2f393c | 633 | RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; |
| mbed_official | 553:063b9f2f393c | 634 | RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4; |
| mbed_official | 553:063b9f2f393c | 635 | RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; |
| mbed_official | 553:063b9f2f393c | 636 | if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK) |
| mbed_official | 553:063b9f2f393c | 637 | { |
| mbed_official | 553:063b9f2f393c | 638 | return 0; // FAIL |
| mbed_official | 553:063b9f2f393c | 639 | } |
| mbed_official | 553:063b9f2f393c | 640 | |
| mbed_official | 553:063b9f2f393c | 641 | /* Output clock on MCO1 pin(PA8) for debugging purpose */ |
| mbed_official | 553:063b9f2f393c | 642 | |
| mbed_official | 553:063b9f2f393c | 643 | //if (bypass == 0) |
| mbed_official | 553:063b9f2f393c | 644 | // HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSE, RCC_MCODIV_2); // 4 MHz with xtal |
| mbed_official | 553:063b9f2f393c | 645 | //else |
| mbed_official | 553:063b9f2f393c | 646 | // HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSE, RCC_MCODIV_1); // 8 MHz with external clock |
| mbed_official | 553:063b9f2f393c | 647 | |
| mbed_official | 553:063b9f2f393c | 648 | return 1; // OK |
| mbed_official | 553:063b9f2f393c | 649 | } |
| mbed_official | 553:063b9f2f393c | 650 | #endif |
| mbed_official | 553:063b9f2f393c | 651 | |
| mbed_official | 553:063b9f2f393c | 652 | /******************************************************************************/ |
| mbed_official | 553:063b9f2f393c | 653 | /* PLL (clocked by HSI) used as System clock source */ |
| mbed_official | 553:063b9f2f393c | 654 | /******************************************************************************/ |
| mbed_official | 553:063b9f2f393c | 655 | uint8_t SetSysClock_PLL_HSI(void) |
| mbed_official | 553:063b9f2f393c | 656 | { |
| mbed_official | 553:063b9f2f393c | 657 | RCC_ClkInitTypeDef RCC_ClkInitStruct; |
| mbed_official | 553:063b9f2f393c | 658 | RCC_OscInitTypeDef RCC_OscInitStruct; |
| mbed_official | 553:063b9f2f393c | 659 | |
| mbed_official | 553:063b9f2f393c | 660 | /* The voltage scaling allows optimizing the power consumption when the device is |
| mbed_official | 553:063b9f2f393c | 661 | clocked below the maximum system frequency, to update the voltage scaling value |
| mbed_official | 553:063b9f2f393c | 662 | regarding system frequency refer to product datasheet. */ |
| mbed_official | 553:063b9f2f393c | 663 | __PWR_CLK_ENABLE(); |
| mbed_official | 553:063b9f2f393c | 664 | __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2); |
| mbed_official | 553:063b9f2f393c | 665 | |
| mbed_official | 553:063b9f2f393c | 666 | /* Enable HSI oscillator and activate PLL with HSI as source */ |
| mbed_official | 553:063b9f2f393c | 667 | RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI | RCC_OSCILLATORTYPE_HSE; |
| mbed_official | 553:063b9f2f393c | 668 | RCC_OscInitStruct.HSIState = RCC_HSI_ON; |
| mbed_official | 553:063b9f2f393c | 669 | RCC_OscInitStruct.HSEState = RCC_HSE_OFF; |
| mbed_official | 553:063b9f2f393c | 670 | RCC_OscInitStruct.HSICalibrationValue = 16; |
| mbed_official | 553:063b9f2f393c | 671 | RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; |
| mbed_official | 553:063b9f2f393c | 672 | RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI; |
| mbed_official | 553:063b9f2f393c | 673 | //RCC_OscInitStruct.PLL.PLLM = 16; // VCO input clock = 1 MHz (16 MHz / 16) |
| mbed_official | 553:063b9f2f393c | 674 | //RCC_OscInitStruct.PLL.PLLN = 384; // VCO output clock = 384 MHz (1 MHz * 384) |
| mbed_official | 553:063b9f2f393c | 675 | RCC_OscInitStruct.PLL.PLLM = 8; // VCO input clock = 2 MHz (16 MHz / 8) |
| mbed_official | 553:063b9f2f393c | 676 | RCC_OscInitStruct.PLL.PLLN = 192; // VCO output clock = 384 MHz (2 MHz * 192) |
| mbed_official | 553:063b9f2f393c | 677 | RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4; // PLLCLK = 96 MHz (384 MHz / 4) |
| mbed_official | 553:063b9f2f393c | 678 | RCC_OscInitStruct.PLL.PLLQ = 8; // USB clock = 48 MHz (384 MHz / 8) --> Good for USB |
| mbed_official | 553:063b9f2f393c | 679 | if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) |
| mbed_official | 553:063b9f2f393c | 680 | { |
| mbed_official | 553:063b9f2f393c | 681 | return 0; // FAIL |
| mbed_official | 553:063b9f2f393c | 682 | } |
| mbed_official | 553:063b9f2f393c | 683 | |
| mbed_official | 553:063b9f2f393c | 684 | /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */ |
| mbed_official | 553:063b9f2f393c | 685 | RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2); |
| mbed_official | 553:063b9f2f393c | 686 | RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; // 96 MHz |
| mbed_official | 553:063b9f2f393c | 687 | RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; // 96 MHz |
| mbed_official | 553:063b9f2f393c | 688 | RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2; // 48 MHz |
| mbed_official | 553:063b9f2f393c | 689 | RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; // 96 MHz |
| mbed_official | 553:063b9f2f393c | 690 | if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK) |
| mbed_official | 553:063b9f2f393c | 691 | { |
| mbed_official | 553:063b9f2f393c | 692 | return 0; // FAIL |
| mbed_official | 553:063b9f2f393c | 693 | } |
| mbed_official | 553:063b9f2f393c | 694 | |
| mbed_official | 553:063b9f2f393c | 695 | /* Output clock on MCO1 pin(PA8) for debugging purpose */ |
| mbed_official | 553:063b9f2f393c | 696 | //HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSI, RCC_MCODIV_1); // 16 MHz |
| mbed_official | 553:063b9f2f393c | 697 | |
| mbed_official | 553:063b9f2f393c | 698 | return 1; // OK |
| mbed_official | 553:063b9f2f393c | 699 | } |
| mbed_official | 553:063b9f2f393c | 700 | |
| mbed_official | 553:063b9f2f393c | 701 | /** |
| mbed_official | 553:063b9f2f393c | 702 | * @} |
| mbed_official | 553:063b9f2f393c | 703 | */ |
| mbed_official | 553:063b9f2f393c | 704 | |
| mbed_official | 553:063b9f2f393c | 705 | /** |
| mbed_official | 553:063b9f2f393c | 706 | * @} |
| mbed_official | 553:063b9f2f393c | 707 | */ |
| mbed_official | 553:063b9f2f393c | 708 | |
| mbed_official | 553:063b9f2f393c | 709 | /** |
| mbed_official | 553:063b9f2f393c | 710 | * @} |
| mbed_official | 553:063b9f2f393c | 711 | */ |
| mbed_official | 553:063b9f2f393c | 712 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |
