mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
targets/TARGET_STM/TARGET_STM32F4/TARGET_MTS_DRAGONFLY_F411RE/device/system_clock.c@173:e131a1973e81, 2017-09-15 (annotated)
- Committer:
- AnnaBridge
- Date:
- Fri Sep 15 14:59:18 2017 +0100
- Revision:
- 173:e131a1973e81
- Parent:
- 168:9672193075cf
- Child:
- 175:af195413fb11
This updates the lib to the mbed lib v 151
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
AnnaBridge | 168:9672193075cf | 1 | /* mbed Microcontroller Library |
AnnaBridge | 168:9672193075cf | 2 | * Copyright (c) 2006-2017 ARM Limited |
AnnaBridge | 168:9672193075cf | 3 | * |
AnnaBridge | 168:9672193075cf | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
AnnaBridge | 168:9672193075cf | 5 | * you may not use this file except in compliance with the License. |
AnnaBridge | 168:9672193075cf | 6 | * You may obtain a copy of the License at |
AnnaBridge | 168:9672193075cf | 7 | * |
AnnaBridge | 168:9672193075cf | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
AnnaBridge | 168:9672193075cf | 9 | * |
AnnaBridge | 168:9672193075cf | 10 | * Unless required by applicable law or agreed to in writing, software |
AnnaBridge | 168:9672193075cf | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
AnnaBridge | 168:9672193075cf | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
AnnaBridge | 168:9672193075cf | 13 | * See the License for the specific language governing permissions and |
AnnaBridge | 168:9672193075cf | 14 | * limitations under the License. |
AnnaBridge | 168:9672193075cf | 15 | */ |
AnnaBridge | 168:9672193075cf | 16 | |
AnnaBridge | 168:9672193075cf | 17 | /** |
AnnaBridge | 168:9672193075cf | 18 | * This file configures the system clock as follows: |
AnnaBridge | 168:9672193075cf | 19 | *----------------------------------------------------------------------------- |
AnnaBridge | 168:9672193075cf | 20 | * System clock source | 1- PLL_HSE_EXTC | 3- PLL_HSI |
AnnaBridge | 168:9672193075cf | 21 | * | (external 8 MHz clock) | (internal 16 MHz) |
AnnaBridge | 168:9672193075cf | 22 | * | 2- PLL_HSE_XTAL | |
AnnaBridge | 168:9672193075cf | 23 | * | (external 8 MHz xtal) | |
AnnaBridge | 168:9672193075cf | 24 | *----------------------------------------------------------------------------- |
AnnaBridge | 168:9672193075cf | 25 | * SYSCLK(MHz) | 100 | 100 |
AnnaBridge | 168:9672193075cf | 26 | *----------------------------------------------------------------------------- |
AnnaBridge | 168:9672193075cf | 27 | * AHBCLK (MHz) | 100 | 100 |
AnnaBridge | 168:9672193075cf | 28 | *----------------------------------------------------------------------------- |
AnnaBridge | 168:9672193075cf | 29 | * APB1CLK (MHz) | 50 | 50 |
AnnaBridge | 168:9672193075cf | 30 | *----------------------------------------------------------------------------- |
AnnaBridge | 168:9672193075cf | 31 | * APB2CLK (MHz) | 100 | 100 |
AnnaBridge | 168:9672193075cf | 32 | *----------------------------------------------------------------------------- |
AnnaBridge | 168:9672193075cf | 33 | * USB capable (48 MHz precise clock) | NO | NO |
AnnaBridge | 168:9672193075cf | 34 | *----------------------------------------------------------------------------- |
AnnaBridge | 168:9672193075cf | 35 | **/ |
AnnaBridge | 168:9672193075cf | 36 | |
AnnaBridge | 168:9672193075cf | 37 | #include "stm32f4xx.h" |
AnnaBridge | 168:9672193075cf | 38 | |
AnnaBridge | 168:9672193075cf | 39 | /*!< Uncomment the following line if you need to relocate your vector Table in |
AnnaBridge | 168:9672193075cf | 40 | Internal SRAM. */ |
AnnaBridge | 168:9672193075cf | 41 | /* #define VECT_TAB_SRAM */ |
AnnaBridge | 168:9672193075cf | 42 | #ifndef VECT_TAB_OFFSET |
AnnaBridge | 168:9672193075cf | 43 | #define VECT_TAB_OFFSET 0x00 /*!< Vector Table base offset field. |
AnnaBridge | 168:9672193075cf | 44 | This value must be a multiple of 0x200. */ |
AnnaBridge | 168:9672193075cf | 45 | #endif |
AnnaBridge | 168:9672193075cf | 46 | |
AnnaBridge | 168:9672193075cf | 47 | |
AnnaBridge | 168:9672193075cf | 48 | /* Select the clock sources (other than HSI) to start with (0=OFF, 1=ON) */ |
AnnaBridge | 168:9672193075cf | 49 | #define USE_PLL_HSE_EXTC (0) /* Use external clock */ |
AnnaBridge | 168:9672193075cf | 50 | #define USE_PLL_HSE_XTAL (1) /* Use external xtal */ |
AnnaBridge | 168:9672193075cf | 51 | |
AnnaBridge | 168:9672193075cf | 52 | #if (USE_PLL_HSE_XTAL != 0) || (USE_PLL_HSE_EXTC != 0) |
AnnaBridge | 168:9672193075cf | 53 | uint8_t SetSysClock_PLL_HSE(uint8_t bypass); |
AnnaBridge | 168:9672193075cf | 54 | #endif |
AnnaBridge | 168:9672193075cf | 55 | |
AnnaBridge | 168:9672193075cf | 56 | uint8_t SetSysClock_PLL_HSI(void); |
AnnaBridge | 168:9672193075cf | 57 | |
AnnaBridge | 168:9672193075cf | 58 | /** |
AnnaBridge | 168:9672193075cf | 59 | * @brief Setup the microcontroller system |
AnnaBridge | 168:9672193075cf | 60 | * Initialize the FPU setting, vector table location and External memory |
AnnaBridge | 168:9672193075cf | 61 | * configuration. |
AnnaBridge | 168:9672193075cf | 62 | * @param None |
AnnaBridge | 168:9672193075cf | 63 | * @retval None |
AnnaBridge | 168:9672193075cf | 64 | */ |
AnnaBridge | 168:9672193075cf | 65 | void SystemInit(void) |
AnnaBridge | 168:9672193075cf | 66 | { |
AnnaBridge | 168:9672193075cf | 67 | /* FPU settings ------------------------------------------------------------*/ |
AnnaBridge | 168:9672193075cf | 68 | #if (__FPU_PRESENT == 1) && (__FPU_USED == 1) |
AnnaBridge | 168:9672193075cf | 69 | SCB->CPACR |= ((3UL << 10*2)|(3UL << 11*2)); /* set CP10 and CP11 Full Access */ |
AnnaBridge | 168:9672193075cf | 70 | #endif |
AnnaBridge | 168:9672193075cf | 71 | /* Reset the RCC clock configuration to the default reset state ------------*/ |
AnnaBridge | 168:9672193075cf | 72 | /* Set HSION bit */ |
AnnaBridge | 168:9672193075cf | 73 | RCC->CR |= (uint32_t)0x00000001; |
AnnaBridge | 168:9672193075cf | 74 | |
AnnaBridge | 168:9672193075cf | 75 | /* Reset CFGR register */ |
AnnaBridge | 168:9672193075cf | 76 | RCC->CFGR = 0x00000000; |
AnnaBridge | 168:9672193075cf | 77 | |
AnnaBridge | 168:9672193075cf | 78 | /* Reset HSEON, CSSON and PLLON bits */ |
AnnaBridge | 168:9672193075cf | 79 | RCC->CR &= (uint32_t)0xFEF6FFFF; |
AnnaBridge | 168:9672193075cf | 80 | |
AnnaBridge | 168:9672193075cf | 81 | /* Reset PLLCFGR register */ |
AnnaBridge | 168:9672193075cf | 82 | RCC->PLLCFGR = 0x24003010; |
AnnaBridge | 168:9672193075cf | 83 | |
AnnaBridge | 168:9672193075cf | 84 | /* Reset HSEBYP bit */ |
AnnaBridge | 168:9672193075cf | 85 | RCC->CR &= (uint32_t)0xFFFBFFFF; |
AnnaBridge | 168:9672193075cf | 86 | |
AnnaBridge | 168:9672193075cf | 87 | /* Disable all interrupts */ |
AnnaBridge | 168:9672193075cf | 88 | RCC->CIR = 0x00000000; |
AnnaBridge | 168:9672193075cf | 89 | |
AnnaBridge | 168:9672193075cf | 90 | #if defined (DATA_IN_ExtSRAM) || defined (DATA_IN_ExtSDRAM) |
AnnaBridge | 168:9672193075cf | 91 | SystemInit_ExtMemCtl(); |
AnnaBridge | 168:9672193075cf | 92 | #endif /* DATA_IN_ExtSRAM || DATA_IN_ExtSDRAM */ |
AnnaBridge | 168:9672193075cf | 93 | |
AnnaBridge | 168:9672193075cf | 94 | /* Configure the Vector Table location add offset address ------------------*/ |
AnnaBridge | 168:9672193075cf | 95 | #ifdef VECT_TAB_SRAM |
AnnaBridge | 168:9672193075cf | 96 | SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM */ |
AnnaBridge | 168:9672193075cf | 97 | #else |
AnnaBridge | 168:9672193075cf | 98 | SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH */ |
AnnaBridge | 168:9672193075cf | 99 | #endif |
AnnaBridge | 168:9672193075cf | 100 | |
AnnaBridge | 168:9672193075cf | 101 | } |
AnnaBridge | 168:9672193075cf | 102 | |
AnnaBridge | 168:9672193075cf | 103 | /** |
AnnaBridge | 168:9672193075cf | 104 | * @brief Configures the System clock source, PLL Multiplier and Divider factors, |
AnnaBridge | 168:9672193075cf | 105 | * AHB/APBx prescalers and Flash settings |
AnnaBridge | 168:9672193075cf | 106 | * @note This function should be called only once the RCC clock configuration |
AnnaBridge | 168:9672193075cf | 107 | * is reset to the default reset state (done in SystemInit() function). |
AnnaBridge | 168:9672193075cf | 108 | * @param None |
AnnaBridge | 168:9672193075cf | 109 | * @retval None |
AnnaBridge | 168:9672193075cf | 110 | */ |
AnnaBridge | 168:9672193075cf | 111 | void SetSysClock(void) |
AnnaBridge | 168:9672193075cf | 112 | { |
AnnaBridge | 168:9672193075cf | 113 | /* 1- Try to start with HSE and external clock */ |
AnnaBridge | 168:9672193075cf | 114 | #if USE_PLL_HSE_EXTC != 0 |
AnnaBridge | 168:9672193075cf | 115 | if (SetSysClock_PLL_HSE(1) == 0) |
AnnaBridge | 168:9672193075cf | 116 | #endif |
AnnaBridge | 168:9672193075cf | 117 | { |
AnnaBridge | 168:9672193075cf | 118 | /* 2- If fail try to start with HSE and external xtal */ |
AnnaBridge | 168:9672193075cf | 119 | #if USE_PLL_HSE_XTAL != 0 |
AnnaBridge | 168:9672193075cf | 120 | if (SetSysClock_PLL_HSE(0) == 0) |
AnnaBridge | 168:9672193075cf | 121 | #endif |
AnnaBridge | 168:9672193075cf | 122 | { |
AnnaBridge | 168:9672193075cf | 123 | /* 3- If fail start with HSI clock */ |
AnnaBridge | 168:9672193075cf | 124 | if (SetSysClock_PLL_HSI() == 0) { |
AnnaBridge | 168:9672193075cf | 125 | while(1) { |
AnnaBridge | 168:9672193075cf | 126 | // [TODO] Put something here to tell the user that a problem occured... |
AnnaBridge | 168:9672193075cf | 127 | } |
AnnaBridge | 168:9672193075cf | 128 | } |
AnnaBridge | 168:9672193075cf | 129 | } |
AnnaBridge | 168:9672193075cf | 130 | } |
AnnaBridge | 168:9672193075cf | 131 | |
AnnaBridge | 168:9672193075cf | 132 | /* Output clock on MCO2 pin(PC9) for debugging purpose */ |
AnnaBridge | 168:9672193075cf | 133 | //HAL_RCC_MCOConfig(RCC_MCO2, RCC_MCO2SOURCE_SYSCLK, RCC_MCODIV_4); // 100 MHz / 4 = 25 MHz |
AnnaBridge | 168:9672193075cf | 134 | } |
AnnaBridge | 168:9672193075cf | 135 | |
AnnaBridge | 168:9672193075cf | 136 | #if (USE_PLL_HSE_XTAL != 0) || (USE_PLL_HSE_EXTC != 0) |
AnnaBridge | 168:9672193075cf | 137 | /******************************************************************************/ |
AnnaBridge | 168:9672193075cf | 138 | /* PLL (clocked by HSE) used as System clock source */ |
AnnaBridge | 168:9672193075cf | 139 | /******************************************************************************/ |
AnnaBridge | 168:9672193075cf | 140 | uint8_t SetSysClock_PLL_HSE(uint8_t bypass) |
AnnaBridge | 168:9672193075cf | 141 | { |
AnnaBridge | 168:9672193075cf | 142 | RCC_ClkInitTypeDef RCC_ClkInitStruct; |
AnnaBridge | 168:9672193075cf | 143 | RCC_OscInitTypeDef RCC_OscInitStruct; |
AnnaBridge | 168:9672193075cf | 144 | |
AnnaBridge | 168:9672193075cf | 145 | /* The voltage scaling allows optimizing the power consumption when the device is |
AnnaBridge | 168:9672193075cf | 146 | clocked below the maximum system frequency, to update the voltage scaling value |
AnnaBridge | 168:9672193075cf | 147 | regarding system frequency refer to product datasheet. */ |
AnnaBridge | 168:9672193075cf | 148 | __HAL_RCC_PWR_CLK_ENABLE(); |
AnnaBridge | 168:9672193075cf | 149 | __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2); |
AnnaBridge | 168:9672193075cf | 150 | |
AnnaBridge | 168:9672193075cf | 151 | /* Enable HSE oscillator and activate PLL with HSE as source */ |
AnnaBridge | 168:9672193075cf | 152 | RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; |
AnnaBridge | 168:9672193075cf | 153 | if (bypass == 0) { |
AnnaBridge | 168:9672193075cf | 154 | RCC_OscInitStruct.HSEState = RCC_HSE_ON; /* External 8 MHz xtal on OSC_IN/OSC_OUT */ |
AnnaBridge | 168:9672193075cf | 155 | } else { |
AnnaBridge | 168:9672193075cf | 156 | RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS; /* External 8 MHz clock on OSC_IN */ |
AnnaBridge | 168:9672193075cf | 157 | } |
AnnaBridge | 168:9672193075cf | 158 | RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; |
AnnaBridge | 168:9672193075cf | 159 | RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; |
AnnaBridge | 168:9672193075cf | 160 | //RCC_OscInitStruct.PLL.PLLM = 8; // VCO input clock = 1 MHz (8 MHz / 8) |
AnnaBridge | 168:9672193075cf | 161 | //RCC_OscInitStruct.PLL.PLLN = 400; // VCO output clock = 400 MHz (1 MHz * 400) |
AnnaBridge | 168:9672193075cf | 162 | RCC_OscInitStruct.PLL.PLLM = 13; // VCO input clock = 2 MHz (8 MHz / 4) |
AnnaBridge | 168:9672193075cf | 163 | RCC_OscInitStruct.PLL.PLLN = 192; // VCO output clock = 400 MHz (2 MHz * 200) |
AnnaBridge | 168:9672193075cf | 164 | RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4; // PLLCLK = 100 MHz (400 MHz / 4) |
AnnaBridge | 168:9672193075cf | 165 | RCC_OscInitStruct.PLL.PLLQ = 8; // USB clock = 44.44 MHz (400 MHz / 9) --> Not good for USB |
AnnaBridge | 168:9672193075cf | 166 | if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { |
AnnaBridge | 168:9672193075cf | 167 | return 0; // FAIL |
AnnaBridge | 168:9672193075cf | 168 | } |
AnnaBridge | 168:9672193075cf | 169 | |
AnnaBridge | 168:9672193075cf | 170 | /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */ |
AnnaBridge | 168:9672193075cf | 171 | RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2); |
AnnaBridge | 168:9672193075cf | 172 | RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; // 100 MHz |
AnnaBridge | 168:9672193075cf | 173 | RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; // 100 MHz |
AnnaBridge | 168:9672193075cf | 174 | RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2; // 50 MHz |
AnnaBridge | 168:9672193075cf | 175 | RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; // 100 MHz |
AnnaBridge | 168:9672193075cf | 176 | if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK) { |
AnnaBridge | 168:9672193075cf | 177 | return 0; // FAIL |
AnnaBridge | 168:9672193075cf | 178 | } |
AnnaBridge | 168:9672193075cf | 179 | |
AnnaBridge | 168:9672193075cf | 180 | /* Output clock on MCO1 pin(PA8) for debugging purpose */ |
AnnaBridge | 168:9672193075cf | 181 | |
AnnaBridge | 168:9672193075cf | 182 | //if (bypass == 0) |
AnnaBridge | 168:9672193075cf | 183 | // HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSE, RCC_MCODIV_2); // 4 MHz with xtal |
AnnaBridge | 168:9672193075cf | 184 | //else |
AnnaBridge | 168:9672193075cf | 185 | // HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSE, RCC_MCODIV_1); // 8 MHz with external clock |
AnnaBridge | 168:9672193075cf | 186 | |
AnnaBridge | 168:9672193075cf | 187 | return 1; // OK |
AnnaBridge | 168:9672193075cf | 188 | } |
AnnaBridge | 168:9672193075cf | 189 | #endif |
AnnaBridge | 168:9672193075cf | 190 | |
AnnaBridge | 168:9672193075cf | 191 | /******************************************************************************/ |
AnnaBridge | 168:9672193075cf | 192 | /* PLL (clocked by HSI) used as System clock source */ |
AnnaBridge | 168:9672193075cf | 193 | /******************************************************************************/ |
AnnaBridge | 168:9672193075cf | 194 | uint8_t SetSysClock_PLL_HSI(void) |
AnnaBridge | 168:9672193075cf | 195 | { |
AnnaBridge | 168:9672193075cf | 196 | RCC_ClkInitTypeDef RCC_ClkInitStruct; |
AnnaBridge | 168:9672193075cf | 197 | RCC_OscInitTypeDef RCC_OscInitStruct; |
AnnaBridge | 168:9672193075cf | 198 | |
AnnaBridge | 168:9672193075cf | 199 | /* The voltage scaling allows optimizing the power consumption when the device is |
AnnaBridge | 168:9672193075cf | 200 | clocked below the maximum system frequency, to update the voltage scaling value |
AnnaBridge | 168:9672193075cf | 201 | regarding system frequency refer to product datasheet. */ |
AnnaBridge | 168:9672193075cf | 202 | __HAL_RCC_PWR_CLK_ENABLE(); |
AnnaBridge | 168:9672193075cf | 203 | __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2); |
AnnaBridge | 168:9672193075cf | 204 | |
AnnaBridge | 168:9672193075cf | 205 | /* Enable HSI oscillator and activate PLL with HSI as source */ |
AnnaBridge | 168:9672193075cf | 206 | RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI | RCC_OSCILLATORTYPE_HSE; |
AnnaBridge | 168:9672193075cf | 207 | RCC_OscInitStruct.HSIState = RCC_HSI_ON; |
AnnaBridge | 168:9672193075cf | 208 | RCC_OscInitStruct.HSEState = RCC_HSE_OFF; |
AnnaBridge | 168:9672193075cf | 209 | RCC_OscInitStruct.HSICalibrationValue = 16; |
AnnaBridge | 168:9672193075cf | 210 | RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; |
AnnaBridge | 168:9672193075cf | 211 | RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI; |
AnnaBridge | 168:9672193075cf | 212 | //RCC_OscInitStruct.PLL.PLLM = 16; // VCO input clock = 1 MHz (16 MHz / 16) |
AnnaBridge | 168:9672193075cf | 213 | //RCC_OscInitStruct.PLL.PLLN = 400; // VCO output clock = 400 MHz (1 MHz * 400) |
AnnaBridge | 168:9672193075cf | 214 | RCC_OscInitStruct.PLL.PLLM = 8; // VCO input clock = 2 MHz (16 MHz / 8) |
AnnaBridge | 168:9672193075cf | 215 | RCC_OscInitStruct.PLL.PLLN = 200; // VCO output clock = 400 MHz (2 MHz * 200) |
AnnaBridge | 168:9672193075cf | 216 | RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4; // PLLCLK = 100 MHz (400 MHz / 4) |
AnnaBridge | 168:9672193075cf | 217 | RCC_OscInitStruct.PLL.PLLQ = 9; // USB clock = 44.44 MHz (400 MHz / 9) --> Not good for USB |
AnnaBridge | 168:9672193075cf | 218 | if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { |
AnnaBridge | 168:9672193075cf | 219 | return 0; // FAIL |
AnnaBridge | 168:9672193075cf | 220 | } |
AnnaBridge | 168:9672193075cf | 221 | |
AnnaBridge | 168:9672193075cf | 222 | /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */ |
AnnaBridge | 168:9672193075cf | 223 | RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2); |
AnnaBridge | 168:9672193075cf | 224 | RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; // 100 MHz |
AnnaBridge | 168:9672193075cf | 225 | RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; // 100 MHz |
AnnaBridge | 168:9672193075cf | 226 | RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2; // 50 MHz |
AnnaBridge | 168:9672193075cf | 227 | RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; // 100 MHz |
AnnaBridge | 168:9672193075cf | 228 | if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK) { |
AnnaBridge | 168:9672193075cf | 229 | return 0; // FAIL |
AnnaBridge | 168:9672193075cf | 230 | } |
AnnaBridge | 168:9672193075cf | 231 | |
AnnaBridge | 168:9672193075cf | 232 | /* Output clock on MCO1 pin(PA8) for debugging purpose */ |
AnnaBridge | 168:9672193075cf | 233 | //HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSI, RCC_MCODIV_1); // 16 MHz |
AnnaBridge | 168:9672193075cf | 234 | |
AnnaBridge | 168:9672193075cf | 235 | return 1; // OK |
AnnaBridge | 168:9672193075cf | 236 | } |
AnnaBridge | 168:9672193075cf | 237 | |
AnnaBridge | 168:9672193075cf | 238 | /******************************************************************************/ |
AnnaBridge | 168:9672193075cf | 239 | /* Hard Fault Handler */ |
AnnaBridge | 168:9672193075cf | 240 | /******************************************************************************/ |
AnnaBridge | 168:9672193075cf | 241 | void HardFault_Handler(void) |
AnnaBridge | 168:9672193075cf | 242 | { |
AnnaBridge | 173:e131a1973e81 | 243 | #if !defined(NDEBUG) || NDEBUG == 0 |
AnnaBridge | 168:9672193075cf | 244 | printf("Hard Fault\n"); |
AnnaBridge | 173:e131a1973e81 | 245 | #endif |
AnnaBridge | 168:9672193075cf | 246 | NVIC_SystemReset(); |
AnnaBridge | 168:9672193075cf | 247 | } |