Initial commit
mbed-dev-master/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F446xE/TARGET_B96B_F446VE/system_clock.c@0:bb348c97df44, 2020-09-16 (annotated)
- Committer:
- lypinator
- Date:
- Wed Sep 16 01:11:49 2020 +0000
- Revision:
- 0:bb348c97df44
Added PWM
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
lypinator | 0:bb348c97df44 | 1 | /* mbed Microcontroller Library |
lypinator | 0:bb348c97df44 | 2 | * Copyright (c) 2006-2017 ARM Limited |
lypinator | 0:bb348c97df44 | 3 | * |
lypinator | 0:bb348c97df44 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
lypinator | 0:bb348c97df44 | 5 | * you may not use this file except in compliance with the License. |
lypinator | 0:bb348c97df44 | 6 | * You may obtain a copy of the License at |
lypinator | 0:bb348c97df44 | 7 | * |
lypinator | 0:bb348c97df44 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
lypinator | 0:bb348c97df44 | 9 | * |
lypinator | 0:bb348c97df44 | 10 | * Unless required by applicable law or agreed to in writing, software |
lypinator | 0:bb348c97df44 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
lypinator | 0:bb348c97df44 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
lypinator | 0:bb348c97df44 | 13 | * See the License for the specific language governing permissions and |
lypinator | 0:bb348c97df44 | 14 | * limitations under the License. |
lypinator | 0:bb348c97df44 | 15 | */ |
lypinator | 0:bb348c97df44 | 16 | |
lypinator | 0:bb348c97df44 | 17 | /** |
lypinator | 0:bb348c97df44 | 18 | * This file configures the system clock as follows: |
lypinator | 0:bb348c97df44 | 19 | *----------------------------------------------------------------------------- |
lypinator | 0:bb348c97df44 | 20 | * System clock source | 1- PLL_HSE_XTAL | 3- PLL_HSI |
lypinator | 0:bb348c97df44 | 21 | * | (external 16 MHz xtal) | (internal 16 MHz) |
lypinator | 0:bb348c97df44 | 22 | *----------------------------------------------------------------------------- |
lypinator | 0:bb348c97df44 | 23 | * SYSCLK(MHz) | 180 | 180 |
lypinator | 0:bb348c97df44 | 24 | *----------------------------------------------------------------------------- |
lypinator | 0:bb348c97df44 | 25 | * AHBCLK (MHz) | 180 | 180 |
lypinator | 0:bb348c97df44 | 26 | *----------------------------------------------------------------------------- |
lypinator | 0:bb348c97df44 | 27 | * APB1CLK (MHz) | 45 | 45 |
lypinator | 0:bb348c97df44 | 28 | *----------------------------------------------------------------------------- |
lypinator | 0:bb348c97df44 | 29 | * APB2CLK (MHz) | 90 | 90 |
lypinator | 0:bb348c97df44 | 30 | *----------------------------------------------------------------------------- |
lypinator | 0:bb348c97df44 | 31 | * USB capable (48 MHz precise clock) | YES | NO |
lypinator | 0:bb348c97df44 | 32 | *----------------------------------------------------------------------------- |
lypinator | 0:bb348c97df44 | 33 | **/ |
lypinator | 0:bb348c97df44 | 34 | |
lypinator | 0:bb348c97df44 | 35 | #include "stm32f4xx.h" |
lypinator | 0:bb348c97df44 | 36 | /*!< Uncomment the following line if you need to relocate your vector Table in |
lypinator | 0:bb348c97df44 | 37 | Internal SRAM. */ |
lypinator | 0:bb348c97df44 | 38 | /* #define VECT_TAB_SRAM */ |
lypinator | 0:bb348c97df44 | 39 | #define VECT_TAB_OFFSET 0x00 /*!< Vector Table base offset field. |
lypinator | 0:bb348c97df44 | 40 | This value must be a multiple of 0x200. */ |
lypinator | 0:bb348c97df44 | 41 | |
lypinator | 0:bb348c97df44 | 42 | /* Select the clock sources (other than HSI) to start with (0=OFF, 1=ON) */ |
lypinator | 0:bb348c97df44 | 43 | #define USE_PLL_HSE_EXTC (0) /* Use external clock */ |
lypinator | 0:bb348c97df44 | 44 | #define USE_PLL_HSE_XTAL (1) /* Use external xtal */ |
lypinator | 0:bb348c97df44 | 45 | |
lypinator | 0:bb348c97df44 | 46 | #define DEBUG_MCO (0) // 0=OFF |
lypinator | 0:bb348c97df44 | 47 | // 1=Output the MCO1 on PA8 |
lypinator | 0:bb348c97df44 | 48 | // 2=Output the MCO2 on PC9 |
lypinator | 0:bb348c97df44 | 49 | |
lypinator | 0:bb348c97df44 | 50 | |
lypinator | 0:bb348c97df44 | 51 | #if (USE_PLL_HSE_XTAL != 0) || (USE_PLL_HSE_EXTC != 0) |
lypinator | 0:bb348c97df44 | 52 | uint8_t SetSysClock_PLL_HSE(uint8_t bypass); |
lypinator | 0:bb348c97df44 | 53 | #endif |
lypinator | 0:bb348c97df44 | 54 | |
lypinator | 0:bb348c97df44 | 55 | uint8_t SetSysClock_PLL_HSI(void); |
lypinator | 0:bb348c97df44 | 56 | |
lypinator | 0:bb348c97df44 | 57 | |
lypinator | 0:bb348c97df44 | 58 | /** |
lypinator | 0:bb348c97df44 | 59 | * @brief Setup the microcontroller system |
lypinator | 0:bb348c97df44 | 60 | * Initialize the FPU setting, vector table location and External memory |
lypinator | 0:bb348c97df44 | 61 | * configuration. |
lypinator | 0:bb348c97df44 | 62 | * @param None |
lypinator | 0:bb348c97df44 | 63 | * @retval None |
lypinator | 0:bb348c97df44 | 64 | */ |
lypinator | 0:bb348c97df44 | 65 | void SystemInit(void) |
lypinator | 0:bb348c97df44 | 66 | { |
lypinator | 0:bb348c97df44 | 67 | /* FPU settings ------------------------------------------------------------*/ |
lypinator | 0:bb348c97df44 | 68 | #if (__FPU_PRESENT == 1) && (__FPU_USED == 1) |
lypinator | 0:bb348c97df44 | 69 | SCB->CPACR |= ((3UL << 10 * 2) | (3UL << 11 * 2)); /* set CP10 and CP11 Full Access */ |
lypinator | 0:bb348c97df44 | 70 | #endif |
lypinator | 0:bb348c97df44 | 71 | /* Reset the RCC clock configuration to the default reset state ------------*/ |
lypinator | 0:bb348c97df44 | 72 | /* Set HSION bit */ |
lypinator | 0:bb348c97df44 | 73 | RCC->CR |= (uint32_t)0x00000001; |
lypinator | 0:bb348c97df44 | 74 | |
lypinator | 0:bb348c97df44 | 75 | /* Reset CFGR register */ |
lypinator | 0:bb348c97df44 | 76 | RCC->CFGR = 0x00000000; |
lypinator | 0:bb348c97df44 | 77 | |
lypinator | 0:bb348c97df44 | 78 | /* Reset HSEON, CSSON and PLLON bits */ |
lypinator | 0:bb348c97df44 | 79 | RCC->CR &= (uint32_t)0xFEF6FFFF; |
lypinator | 0:bb348c97df44 | 80 | |
lypinator | 0:bb348c97df44 | 81 | /* Reset PLLCFGR register */ |
lypinator | 0:bb348c97df44 | 82 | RCC->PLLCFGR = 0x24003010; |
lypinator | 0:bb348c97df44 | 83 | |
lypinator | 0:bb348c97df44 | 84 | /* Reset HSEBYP bit */ |
lypinator | 0:bb348c97df44 | 85 | RCC->CR &= (uint32_t)0xFFFBFFFF; |
lypinator | 0:bb348c97df44 | 86 | |
lypinator | 0:bb348c97df44 | 87 | /* Disable all interrupts */ |
lypinator | 0:bb348c97df44 | 88 | RCC->CIR = 0x00000000; |
lypinator | 0:bb348c97df44 | 89 | |
lypinator | 0:bb348c97df44 | 90 | #if defined (DATA_IN_ExtSRAM) || defined (DATA_IN_ExtSDRAM) |
lypinator | 0:bb348c97df44 | 91 | SystemInit_ExtMemCtl(); |
lypinator | 0:bb348c97df44 | 92 | #endif /* DATA_IN_ExtSRAM || DATA_IN_ExtSDRAM */ |
lypinator | 0:bb348c97df44 | 93 | |
lypinator | 0:bb348c97df44 | 94 | /* Configure the Vector Table location add offset address ------------------*/ |
lypinator | 0:bb348c97df44 | 95 | #ifdef VECT_TAB_SRAM |
lypinator | 0:bb348c97df44 | 96 | SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM */ |
lypinator | 0:bb348c97df44 | 97 | #else |
lypinator | 0:bb348c97df44 | 98 | SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH */ |
lypinator | 0:bb348c97df44 | 99 | #endif |
lypinator | 0:bb348c97df44 | 100 | |
lypinator | 0:bb348c97df44 | 101 | } |
lypinator | 0:bb348c97df44 | 102 | |
lypinator | 0:bb348c97df44 | 103 | |
lypinator | 0:bb348c97df44 | 104 | /** |
lypinator | 0:bb348c97df44 | 105 | * @brief Configures the System clock source, PLL Multiplier and Divider factors, |
lypinator | 0:bb348c97df44 | 106 | * AHB/APBx prescalers and Flash settings |
lypinator | 0:bb348c97df44 | 107 | * @note This function should be called only once the RCC clock configuration |
lypinator | 0:bb348c97df44 | 108 | * is reset to the default reset state (done in SystemInit() function). |
lypinator | 0:bb348c97df44 | 109 | * @param None |
lypinator | 0:bb348c97df44 | 110 | * @retval None |
lypinator | 0:bb348c97df44 | 111 | */ |
lypinator | 0:bb348c97df44 | 112 | void SetSysClock(void) |
lypinator | 0:bb348c97df44 | 113 | { |
lypinator | 0:bb348c97df44 | 114 | /* 1- Try to start with HSE and external clock */ |
lypinator | 0:bb348c97df44 | 115 | #if USE_PLL_HSE_EXTC != 0 |
lypinator | 0:bb348c97df44 | 116 | if (SetSysClock_PLL_HSE(1) == 0) |
lypinator | 0:bb348c97df44 | 117 | #endif |
lypinator | 0:bb348c97df44 | 118 | { |
lypinator | 0:bb348c97df44 | 119 | /* 2- If fail try to start with HSE and external xtal */ |
lypinator | 0:bb348c97df44 | 120 | #if USE_PLL_HSE_XTAL != 0 |
lypinator | 0:bb348c97df44 | 121 | if (SetSysClock_PLL_HSE(0) == 0) |
lypinator | 0:bb348c97df44 | 122 | #endif |
lypinator | 0:bb348c97df44 | 123 | { |
lypinator | 0:bb348c97df44 | 124 | /* 3- If fail start with HSI clock */ |
lypinator | 0:bb348c97df44 | 125 | if (SetSysClock_PLL_HSI() == 0) { |
lypinator | 0:bb348c97df44 | 126 | while (1) { |
lypinator | 0:bb348c97df44 | 127 | // [TODO] Put something here to tell the user that a problem occured... |
lypinator | 0:bb348c97df44 | 128 | } |
lypinator | 0:bb348c97df44 | 129 | } |
lypinator | 0:bb348c97df44 | 130 | } |
lypinator | 0:bb348c97df44 | 131 | } |
lypinator | 0:bb348c97df44 | 132 | |
lypinator | 0:bb348c97df44 | 133 | // Output clock on MCO2 pin(PC9) for debugging purpose |
lypinator | 0:bb348c97df44 | 134 | #if DEBUG_MCO == 2 |
lypinator | 0:bb348c97df44 | 135 | HAL_RCC_MCOConfig(RCC_MCO2, RCC_MCO2SOURCE_SYSCLK, RCC_MCODIV_4); // 180/4 = 45 MHz |
lypinator | 0:bb348c97df44 | 136 | #endif |
lypinator | 0:bb348c97df44 | 137 | } |
lypinator | 0:bb348c97df44 | 138 | |
lypinator | 0:bb348c97df44 | 139 | #if (USE_PLL_HSE_XTAL != 0) || (USE_PLL_HSE_EXTC != 0) |
lypinator | 0:bb348c97df44 | 140 | /******************************************************************************/ |
lypinator | 0:bb348c97df44 | 141 | /* PLL (clocked by HSE) used as System clock source */ |
lypinator | 0:bb348c97df44 | 142 | /******************************************************************************/ |
lypinator | 0:bb348c97df44 | 143 | uint8_t SetSysClock_PLL_HSE(uint8_t bypass) |
lypinator | 0:bb348c97df44 | 144 | { |
lypinator | 0:bb348c97df44 | 145 | RCC_ClkInitTypeDef RCC_ClkInitStruct; |
lypinator | 0:bb348c97df44 | 146 | RCC_OscInitTypeDef RCC_OscInitStruct; |
lypinator | 0:bb348c97df44 | 147 | RCC_PeriphCLKInitTypeDef PeriphClkInitStruct; |
lypinator | 0:bb348c97df44 | 148 | |
lypinator | 0:bb348c97df44 | 149 | /* The voltage scaling allows optimizing the power consumption when the device is |
lypinator | 0:bb348c97df44 | 150 | clocked below the maximum system frequency, to update the voltage scaling value |
lypinator | 0:bb348c97df44 | 151 | regarding system frequency refer to product datasheet. */ |
lypinator | 0:bb348c97df44 | 152 | __HAL_RCC_PWR_CLK_ENABLE(); |
lypinator | 0:bb348c97df44 | 153 | __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); |
lypinator | 0:bb348c97df44 | 154 | |
lypinator | 0:bb348c97df44 | 155 | // Enable HSE oscillator and activate PLL with HSE as source |
lypinator | 0:bb348c97df44 | 156 | RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; |
lypinator | 0:bb348c97df44 | 157 | if (bypass == 0) { |
lypinator | 0:bb348c97df44 | 158 | RCC_OscInitStruct.HSEState = RCC_HSE_ON; // External 8 MHz xtal on OSC_IN/OSC_OUT |
lypinator | 0:bb348c97df44 | 159 | } else { |
lypinator | 0:bb348c97df44 | 160 | RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS; // External 8 MHz clock on OSC_IN |
lypinator | 0:bb348c97df44 | 161 | } |
lypinator | 0:bb348c97df44 | 162 | |
lypinator | 0:bb348c97df44 | 163 | RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; |
lypinator | 0:bb348c97df44 | 164 | RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; |
lypinator | 0:bb348c97df44 | 165 | RCC_OscInitStruct.PLL.PLLM = 16; // VCO input clock = 1 MHz (16 MHz / 16) |
lypinator | 0:bb348c97df44 | 166 | RCC_OscInitStruct.PLL.PLLN = 360; // VCO output clock = 360 MHz (1 MHz * 360) |
lypinator | 0:bb348c97df44 | 167 | RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; // PLLCLK = 180 MHz (360 MHz / 2) |
lypinator | 0:bb348c97df44 | 168 | RCC_OscInitStruct.PLL.PLLQ = 7; // |
lypinator | 0:bb348c97df44 | 169 | RCC_OscInitStruct.PLL.PLLR = 6; // |
lypinator | 0:bb348c97df44 | 170 | if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { |
lypinator | 0:bb348c97df44 | 171 | return 0; // FAIL |
lypinator | 0:bb348c97df44 | 172 | } |
lypinator | 0:bb348c97df44 | 173 | |
lypinator | 0:bb348c97df44 | 174 | // Activate the OverDrive to reach the 180 MHz Frequency |
lypinator | 0:bb348c97df44 | 175 | if (HAL_PWREx_EnableOverDrive() != HAL_OK) { |
lypinator | 0:bb348c97df44 | 176 | return 0; // FAIL |
lypinator | 0:bb348c97df44 | 177 | } |
lypinator | 0:bb348c97df44 | 178 | |
lypinator | 0:bb348c97df44 | 179 | // Select PLLSAI output as USB clock source |
lypinator | 0:bb348c97df44 | 180 | PeriphClkInitStruct.PLLSAI.PLLSAIM = 8; |
lypinator | 0:bb348c97df44 | 181 | PeriphClkInitStruct.PLLSAI.PLLSAIN = 384; |
lypinator | 0:bb348c97df44 | 182 | PeriphClkInitStruct.PLLSAI.PLLSAIP = RCC_PLLSAIP_DIV8; |
lypinator | 0:bb348c97df44 | 183 | PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_CLK48; |
lypinator | 0:bb348c97df44 | 184 | PeriphClkInitStruct.Clk48ClockSelection = RCC_CLK48CLKSOURCE_PLLSAIP; |
lypinator | 0:bb348c97df44 | 185 | HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct); |
lypinator | 0:bb348c97df44 | 186 | |
lypinator | 0:bb348c97df44 | 187 | // Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers |
lypinator | 0:bb348c97df44 | 188 | RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2; |
lypinator | 0:bb348c97df44 | 189 | RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; |
lypinator | 0:bb348c97df44 | 190 | RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; // 180 MHz |
lypinator | 0:bb348c97df44 | 191 | RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4; // 45 MHz |
lypinator | 0:bb348c97df44 | 192 | RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; // 90 MHz |
lypinator | 0:bb348c97df44 | 193 | if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK) { |
lypinator | 0:bb348c97df44 | 194 | return 0; // FAIL |
lypinator | 0:bb348c97df44 | 195 | } |
lypinator | 0:bb348c97df44 | 196 | |
lypinator | 0:bb348c97df44 | 197 | // Output clock on MCO1 pin(PA8) for debugging purpose |
lypinator | 0:bb348c97df44 | 198 | #if DEBUG_MCO == 1 |
lypinator | 0:bb348c97df44 | 199 | if (bypass == 0) { |
lypinator | 0:bb348c97df44 | 200 | HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSE, RCC_MCODIV_1); // 16 MHz with xtal |
lypinator | 0:bb348c97df44 | 201 | } else { |
lypinator | 0:bb348c97df44 | 202 | HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSE, RCC_MCODIV_1); // xx MHz with external clock (MCO) |
lypinator | 0:bb348c97df44 | 203 | } |
lypinator | 0:bb348c97df44 | 204 | #endif |
lypinator | 0:bb348c97df44 | 205 | |
lypinator | 0:bb348c97df44 | 206 | return 1; // OK |
lypinator | 0:bb348c97df44 | 207 | } |
lypinator | 0:bb348c97df44 | 208 | #endif |
lypinator | 0:bb348c97df44 | 209 | |
lypinator | 0:bb348c97df44 | 210 | /******************************************************************************/ |
lypinator | 0:bb348c97df44 | 211 | /* PLL (clocked by HSI) used as System clock source */ |
lypinator | 0:bb348c97df44 | 212 | /******************************************************************************/ |
lypinator | 0:bb348c97df44 | 213 | uint8_t SetSysClock_PLL_HSI(void) |
lypinator | 0:bb348c97df44 | 214 | { |
lypinator | 0:bb348c97df44 | 215 | RCC_ClkInitTypeDef RCC_ClkInitStruct; |
lypinator | 0:bb348c97df44 | 216 | RCC_OscInitTypeDef RCC_OscInitStruct; |
lypinator | 0:bb348c97df44 | 217 | |
lypinator | 0:bb348c97df44 | 218 | /* The voltage scaling allows optimizing the power consumption when the device is |
lypinator | 0:bb348c97df44 | 219 | clocked below the maximum system frequency, to update the voltage scaling value |
lypinator | 0:bb348c97df44 | 220 | regarding system frequency refer to product datasheet. */ |
lypinator | 0:bb348c97df44 | 221 | __HAL_RCC_PWR_CLK_ENABLE(); |
lypinator | 0:bb348c97df44 | 222 | __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); |
lypinator | 0:bb348c97df44 | 223 | |
lypinator | 0:bb348c97df44 | 224 | // Enable HSI oscillator and activate PLL with HSI as source |
lypinator | 0:bb348c97df44 | 225 | RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI | RCC_OSCILLATORTYPE_HSE; |
lypinator | 0:bb348c97df44 | 226 | RCC_OscInitStruct.HSIState = RCC_HSI_ON; |
lypinator | 0:bb348c97df44 | 227 | RCC_OscInitStruct.HSEState = RCC_HSE_OFF; |
lypinator | 0:bb348c97df44 | 228 | RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT; |
lypinator | 0:bb348c97df44 | 229 | RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; |
lypinator | 0:bb348c97df44 | 230 | RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI; |
lypinator | 0:bb348c97df44 | 231 | RCC_OscInitStruct.PLL.PLLM = 16; // VCO input clock = 1 MHz (16 MHz / 16) |
lypinator | 0:bb348c97df44 | 232 | RCC_OscInitStruct.PLL.PLLN = 360; // VCO output clock = 360 MHz (1 MHz * 360) |
lypinator | 0:bb348c97df44 | 233 | RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; // PLLCLK = 180 MHz (360 MHz / 2) |
lypinator | 0:bb348c97df44 | 234 | RCC_OscInitStruct.PLL.PLLQ = 7; // |
lypinator | 0:bb348c97df44 | 235 | RCC_OscInitStruct.PLL.PLLQ = 6; // |
lypinator | 0:bb348c97df44 | 236 | if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { |
lypinator | 0:bb348c97df44 | 237 | return 0; // FAIL |
lypinator | 0:bb348c97df44 | 238 | } |
lypinator | 0:bb348c97df44 | 239 | |
lypinator | 0:bb348c97df44 | 240 | /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */ |
lypinator | 0:bb348c97df44 | 241 | RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2); |
lypinator | 0:bb348c97df44 | 242 | RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; // 180 MHz |
lypinator | 0:bb348c97df44 | 243 | RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; // 180 MHz |
lypinator | 0:bb348c97df44 | 244 | RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4; // 45 MHz |
lypinator | 0:bb348c97df44 | 245 | RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; // 90 MHz |
lypinator | 0:bb348c97df44 | 246 | if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK) { |
lypinator | 0:bb348c97df44 | 247 | return 0; // FAIL |
lypinator | 0:bb348c97df44 | 248 | } |
lypinator | 0:bb348c97df44 | 249 | |
lypinator | 0:bb348c97df44 | 250 | // Output clock on MCO1 pin(PA8) for debugging purpose |
lypinator | 0:bb348c97df44 | 251 | #if DEBUG_MCO == 1 |
lypinator | 0:bb348c97df44 | 252 | HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSI, RCC_MCODIV_1); // 16 MHz |
lypinator | 0:bb348c97df44 | 253 | #endif |
lypinator | 0:bb348c97df44 | 254 | |
lypinator | 0:bb348c97df44 | 255 | return 1; // OK |
lypinator | 0:bb348c97df44 | 256 | } |