ARM GAS C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s page 1 1 .cpu cortex-m4 2 .arch armv7e-m 3 .fpu fpv4-sp-d16 4 .eabi_attribute 27, 1 5 .eabi_attribute 28, 1 6 .eabi_attribute 20, 1 7 .eabi_attribute 21, 1 8 .eabi_attribute 23, 3 9 .eabi_attribute 24, 1 10 .eabi_attribute 25, 1 11 .eabi_attribute 26, 1 12 .eabi_attribute 30, 2 13 .eabi_attribute 34, 1 14 .eabi_attribute 18, 4 15 .file "system_stm32f3xx.c" 16 .text 17 .Ltext0: 18 .cfi_sections .debug_frame 19 .section .text.SystemInit,"ax",%progbits 20 .align 1 21 .p2align 2,,3 22 .global SystemInit 23 .syntax unified 24 .thumb 25 .thumb_func 27 SystemInit: 28 .LFB130: 29 .file 1 "Core/Src/system_stm32f3xx.c" 1:Core/Src/system_stm32f3xx.c **** /** 2:Core/Src/system_stm32f3xx.c **** ****************************************************************************** 3:Core/Src/system_stm32f3xx.c **** * @file system_stm32f3xx.c 4:Core/Src/system_stm32f3xx.c **** * @author MCD Application Team 5:Core/Src/system_stm32f3xx.c **** * @brief CMSIS Cortex-M4 Device Peripheral Access Layer System Source File. 6:Core/Src/system_stm32f3xx.c **** * 7:Core/Src/system_stm32f3xx.c **** * 1. This file provides two functions and one global variable to be called from 8:Core/Src/system_stm32f3xx.c **** * user application: 9:Core/Src/system_stm32f3xx.c **** * - SystemInit(): This function is called at startup just after reset and 10:Core/Src/system_stm32f3xx.c **** * before branch to main program. This call is made inside 11:Core/Src/system_stm32f3xx.c **** * the "startup_stm32f3xx.s" file. 12:Core/Src/system_stm32f3xx.c **** * 13:Core/Src/system_stm32f3xx.c **** * - SystemCoreClock variable: Contains the core clock (HCLK), it can be used 14:Core/Src/system_stm32f3xx.c **** * by the user application to setup the SysTick 15:Core/Src/system_stm32f3xx.c **** * timer or configure other parameters. 16:Core/Src/system_stm32f3xx.c **** * 17:Core/Src/system_stm32f3xx.c **** * - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must 18:Core/Src/system_stm32f3xx.c **** * be called whenever the core clock is changed 19:Core/Src/system_stm32f3xx.c **** * during program execution. 20:Core/Src/system_stm32f3xx.c **** * 21:Core/Src/system_stm32f3xx.c **** * 2. After each device reset the HSI (8 MHz) is used as system clock source. 22:Core/Src/system_stm32f3xx.c **** * Then SystemInit() function is called, in "startup_stm32f3xx.s" file, to 23:Core/Src/system_stm32f3xx.c **** * configure the system clock before to branch to main program. 24:Core/Src/system_stm32f3xx.c **** * 25:Core/Src/system_stm32f3xx.c **** * 3. This file configures the system clock as follows: 26:Core/Src/system_stm32f3xx.c **** *============================================================================= 27:Core/Src/system_stm32f3xx.c **** * Supported STM32F3xx device 28:Core/Src/system_stm32f3xx.c **** *----------------------------------------------------------------------------- 29:Core/Src/system_stm32f3xx.c **** * System Clock source | HSI ARM GAS C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s page 2 30:Core/Src/system_stm32f3xx.c **** *----------------------------------------------------------------------------- 31:Core/Src/system_stm32f3xx.c **** * SYSCLK(Hz) | 8000000 32:Core/Src/system_stm32f3xx.c **** *----------------------------------------------------------------------------- 33:Core/Src/system_stm32f3xx.c **** * HCLK(Hz) | 8000000 34:Core/Src/system_stm32f3xx.c **** *----------------------------------------------------------------------------- 35:Core/Src/system_stm32f3xx.c **** * AHB Prescaler | 1 36:Core/Src/system_stm32f3xx.c **** *----------------------------------------------------------------------------- 37:Core/Src/system_stm32f3xx.c **** * APB2 Prescaler | 1 38:Core/Src/system_stm32f3xx.c **** *----------------------------------------------------------------------------- 39:Core/Src/system_stm32f3xx.c **** * APB1 Prescaler | 1 40:Core/Src/system_stm32f3xx.c **** *----------------------------------------------------------------------------- 41:Core/Src/system_stm32f3xx.c **** * USB Clock | DISABLE 42:Core/Src/system_stm32f3xx.c **** *----------------------------------------------------------------------------- 43:Core/Src/system_stm32f3xx.c **** *============================================================================= 44:Core/Src/system_stm32f3xx.c **** ****************************************************************************** 45:Core/Src/system_stm32f3xx.c **** * @attention 46:Core/Src/system_stm32f3xx.c **** * 47:Core/Src/system_stm32f3xx.c **** * Copyright (c) 2016 STMicroelectronics. 48:Core/Src/system_stm32f3xx.c **** * All rights reserved. 49:Core/Src/system_stm32f3xx.c **** * 50:Core/Src/system_stm32f3xx.c **** * This software is licensed under terms that can be found in the LICENSE file 51:Core/Src/system_stm32f3xx.c **** * in the root directory of this software component. 52:Core/Src/system_stm32f3xx.c **** * If no LICENSE file comes with this software, it is provided AS-IS. 53:Core/Src/system_stm32f3xx.c **** * 54:Core/Src/system_stm32f3xx.c **** ****************************************************************************** 55:Core/Src/system_stm32f3xx.c **** */ 56:Core/Src/system_stm32f3xx.c **** 57:Core/Src/system_stm32f3xx.c **** /** @addtogroup CMSIS 58:Core/Src/system_stm32f3xx.c **** * @{ 59:Core/Src/system_stm32f3xx.c **** */ 60:Core/Src/system_stm32f3xx.c **** 61:Core/Src/system_stm32f3xx.c **** /** @addtogroup stm32f3xx_system 62:Core/Src/system_stm32f3xx.c **** * @{ 63:Core/Src/system_stm32f3xx.c **** */ 64:Core/Src/system_stm32f3xx.c **** 65:Core/Src/system_stm32f3xx.c **** /** @addtogroup STM32F3xx_System_Private_Includes 66:Core/Src/system_stm32f3xx.c **** * @{ 67:Core/Src/system_stm32f3xx.c **** */ 68:Core/Src/system_stm32f3xx.c **** 69:Core/Src/system_stm32f3xx.c **** #include "stm32f3xx.h" 70:Core/Src/system_stm32f3xx.c **** 71:Core/Src/system_stm32f3xx.c **** /** 72:Core/Src/system_stm32f3xx.c **** * @} 73:Core/Src/system_stm32f3xx.c **** */ 74:Core/Src/system_stm32f3xx.c **** 75:Core/Src/system_stm32f3xx.c **** /** @addtogroup STM32F3xx_System_Private_TypesDefinitions 76:Core/Src/system_stm32f3xx.c **** * @{ 77:Core/Src/system_stm32f3xx.c **** */ 78:Core/Src/system_stm32f3xx.c **** 79:Core/Src/system_stm32f3xx.c **** /** 80:Core/Src/system_stm32f3xx.c **** * @} 81:Core/Src/system_stm32f3xx.c **** */ 82:Core/Src/system_stm32f3xx.c **** 83:Core/Src/system_stm32f3xx.c **** /** @addtogroup STM32F3xx_System_Private_Defines 84:Core/Src/system_stm32f3xx.c **** * @{ 85:Core/Src/system_stm32f3xx.c **** */ 86:Core/Src/system_stm32f3xx.c **** #if !defined (HSE_VALUE) ARM GAS C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s page 3 87:Core/Src/system_stm32f3xx.c **** #define HSE_VALUE ((uint32_t)8000000) /*!< Default value of the External oscillator in Hz. 88:Core/Src/system_stm32f3xx.c **** This value can be provided and adapted by the user 89:Core/Src/system_stm32f3xx.c **** #endif /* HSE_VALUE */ 90:Core/Src/system_stm32f3xx.c **** 91:Core/Src/system_stm32f3xx.c **** #if !defined (HSI_VALUE) 92:Core/Src/system_stm32f3xx.c **** #define HSI_VALUE ((uint32_t)8000000) /*!< Default value of the Internal oscillator in Hz. 93:Core/Src/system_stm32f3xx.c **** This value can be provided and adapted by the user 94:Core/Src/system_stm32f3xx.c **** #endif /* HSI_VALUE */ 95:Core/Src/system_stm32f3xx.c **** 96:Core/Src/system_stm32f3xx.c **** /* Note: Following vector table addresses must be defined in line with linker 97:Core/Src/system_stm32f3xx.c **** configuration. */ 98:Core/Src/system_stm32f3xx.c **** /*!< Uncomment the following line if you need to relocate the vector table 99:Core/Src/system_stm32f3xx.c **** anywhere in Flash or Sram, else the vector table is kept at the automatic 100:Core/Src/system_stm32f3xx.c **** remap of boot address selected */ 101:Core/Src/system_stm32f3xx.c **** /* #define USER_VECT_TAB_ADDRESS */ 102:Core/Src/system_stm32f3xx.c **** 103:Core/Src/system_stm32f3xx.c **** #if defined(USER_VECT_TAB_ADDRESS) 104:Core/Src/system_stm32f3xx.c **** /*!< Uncomment the following line if you need to relocate your vector Table 105:Core/Src/system_stm32f3xx.c **** in Sram else user remap will be done in Flash. */ 106:Core/Src/system_stm32f3xx.c **** /* #define VECT_TAB_SRAM */ 107:Core/Src/system_stm32f3xx.c **** #if defined(VECT_TAB_SRAM) 108:Core/Src/system_stm32f3xx.c **** #define VECT_TAB_BASE_ADDRESS SRAM_BASE /*!< Vector Table base address field. 109:Core/Src/system_stm32f3xx.c **** This value must be a multiple of 0x200. */ 110:Core/Src/system_stm32f3xx.c **** #define VECT_TAB_OFFSET 0x00000000U /*!< Vector Table base offset field. 111:Core/Src/system_stm32f3xx.c **** This value must be a multiple of 0x200. */ 112:Core/Src/system_stm32f3xx.c **** #else 113:Core/Src/system_stm32f3xx.c **** #define VECT_TAB_BASE_ADDRESS FLASH_BASE /*!< Vector Table base address field. 114:Core/Src/system_stm32f3xx.c **** This value must be a multiple of 0x200. */ 115:Core/Src/system_stm32f3xx.c **** #define VECT_TAB_OFFSET 0x00000000U /*!< Vector Table base offset field. 116:Core/Src/system_stm32f3xx.c **** This value must be a multiple of 0x200. */ 117:Core/Src/system_stm32f3xx.c **** #endif /* VECT_TAB_SRAM */ 118:Core/Src/system_stm32f3xx.c **** #endif /* USER_VECT_TAB_ADDRESS */ 119:Core/Src/system_stm32f3xx.c **** 120:Core/Src/system_stm32f3xx.c **** /******************************************************************************/ 121:Core/Src/system_stm32f3xx.c **** /** 122:Core/Src/system_stm32f3xx.c **** * @} 123:Core/Src/system_stm32f3xx.c **** */ 124:Core/Src/system_stm32f3xx.c **** 125:Core/Src/system_stm32f3xx.c **** /** @addtogroup STM32F3xx_System_Private_Macros 126:Core/Src/system_stm32f3xx.c **** * @{ 127:Core/Src/system_stm32f3xx.c **** */ 128:Core/Src/system_stm32f3xx.c **** 129:Core/Src/system_stm32f3xx.c **** /** 130:Core/Src/system_stm32f3xx.c **** * @} 131:Core/Src/system_stm32f3xx.c **** */ 132:Core/Src/system_stm32f3xx.c **** 133:Core/Src/system_stm32f3xx.c **** /** @addtogroup STM32F3xx_System_Private_Variables 134:Core/Src/system_stm32f3xx.c **** * @{ 135:Core/Src/system_stm32f3xx.c **** */ 136:Core/Src/system_stm32f3xx.c **** /* This variable is updated in three ways: 137:Core/Src/system_stm32f3xx.c **** 1) by calling CMSIS function SystemCoreClockUpdate() 138:Core/Src/system_stm32f3xx.c **** 2) by calling HAL API function HAL_RCC_GetHCLKFreq() 139:Core/Src/system_stm32f3xx.c **** 3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency 140:Core/Src/system_stm32f3xx.c **** Note: If you use this function to configure the system clock there is no need to 141:Core/Src/system_stm32f3xx.c **** call the 2 first functions listed above, since SystemCoreClock variable is 142:Core/Src/system_stm32f3xx.c **** updated automatically. 143:Core/Src/system_stm32f3xx.c **** */ ARM GAS C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s page 4 144:Core/Src/system_stm32f3xx.c **** uint32_t SystemCoreClock = 8000000; 145:Core/Src/system_stm32f3xx.c **** 146:Core/Src/system_stm32f3xx.c **** const uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9}; 147:Core/Src/system_stm32f3xx.c **** const uint8_t APBPrescTable[8] = {0, 0, 0, 0, 1, 2, 3, 4}; 148:Core/Src/system_stm32f3xx.c **** 149:Core/Src/system_stm32f3xx.c **** /** 150:Core/Src/system_stm32f3xx.c **** * @} 151:Core/Src/system_stm32f3xx.c **** */ 152:Core/Src/system_stm32f3xx.c **** 153:Core/Src/system_stm32f3xx.c **** /** @addtogroup STM32F3xx_System_Private_FunctionPrototypes 154:Core/Src/system_stm32f3xx.c **** * @{ 155:Core/Src/system_stm32f3xx.c **** */ 156:Core/Src/system_stm32f3xx.c **** 157:Core/Src/system_stm32f3xx.c **** /** 158:Core/Src/system_stm32f3xx.c **** * @} 159:Core/Src/system_stm32f3xx.c **** */ 160:Core/Src/system_stm32f3xx.c **** 161:Core/Src/system_stm32f3xx.c **** /** @addtogroup STM32F3xx_System_Private_Functions 162:Core/Src/system_stm32f3xx.c **** * @{ 163:Core/Src/system_stm32f3xx.c **** */ 164:Core/Src/system_stm32f3xx.c **** 165:Core/Src/system_stm32f3xx.c **** /** 166:Core/Src/system_stm32f3xx.c **** * @brief Setup the microcontroller system 167:Core/Src/system_stm32f3xx.c **** * @param None 168:Core/Src/system_stm32f3xx.c **** * @retval None 169:Core/Src/system_stm32f3xx.c **** */ 170:Core/Src/system_stm32f3xx.c **** void SystemInit(void) 171:Core/Src/system_stm32f3xx.c **** { 30 .loc 1 171 1 view -0 31 .cfi_startproc 32 @ args = 0, pretend = 0, frame = 0 33 @ frame_needed = 0, uses_anonymous_args = 0 34 @ link register save eliminated. 172:Core/Src/system_stm32f3xx.c **** /* FPU settings --------------------------------------------------------------*/ 173:Core/Src/system_stm32f3xx.c **** #if (__FPU_PRESENT == 1) && (__FPU_USED == 1) 174:Core/Src/system_stm32f3xx.c **** SCB->CPACR |= ((3UL << 10*2)|(3UL << 11*2)); /* set CP10 and CP11 Full Access */ 35 .loc 1 174 3 view .LVU1 36 .loc 1 174 14 is_stmt 0 view .LVU2 37 0000 034A ldr r2, .L3 38 0002 D2F88830 ldr r3, [r2, #136] 39 0006 43F47003 orr r3, r3, #15728640 40 000a C2F88830 str r3, [r2, #136] 175:Core/Src/system_stm32f3xx.c **** #endif 176:Core/Src/system_stm32f3xx.c **** 177:Core/Src/system_stm32f3xx.c **** /* Configure the Vector Table location -------------------------------------*/ 178:Core/Src/system_stm32f3xx.c **** #if defined(USER_VECT_TAB_ADDRESS) 179:Core/Src/system_stm32f3xx.c **** SCB->VTOR = VECT_TAB_BASE_ADDRESS | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM 180:Core/Src/system_stm32f3xx.c **** #endif /* USER_VECT_TAB_ADDRESS */ 181:Core/Src/system_stm32f3xx.c **** } 41 .loc 1 181 1 view .LVU3 42 000e 7047 bx lr 43 .L4: 44 .align 2 45 .L3: 46 0010 00ED00E0 .word -536810240 47 .cfi_endproc 48 .LFE130: ARM GAS C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s page 5 50 .section .text.SystemCoreClockUpdate,"ax",%progbits 51 .align 1 52 .p2align 2,,3 53 .global SystemCoreClockUpdate 54 .syntax unified 55 .thumb 56 .thumb_func 58 SystemCoreClockUpdate: 59 .LFB131: 182:Core/Src/system_stm32f3xx.c **** 183:Core/Src/system_stm32f3xx.c **** /** 184:Core/Src/system_stm32f3xx.c **** * @brief Update SystemCoreClock variable according to Clock Register Values. 185:Core/Src/system_stm32f3xx.c **** * The SystemCoreClock variable contains the core clock (HCLK), it can 186:Core/Src/system_stm32f3xx.c **** * be used by the user application to setup the SysTick timer or configure 187:Core/Src/system_stm32f3xx.c **** * other parameters. 188:Core/Src/system_stm32f3xx.c **** * 189:Core/Src/system_stm32f3xx.c **** * @note Each time the core clock (HCLK) changes, this function must be called 190:Core/Src/system_stm32f3xx.c **** * to update SystemCoreClock variable value. Otherwise, any configuration 191:Core/Src/system_stm32f3xx.c **** * based on this variable will be incorrect. 192:Core/Src/system_stm32f3xx.c **** * 193:Core/Src/system_stm32f3xx.c **** * @note - The system frequency computed by this function is not the real 194:Core/Src/system_stm32f3xx.c **** * frequency in the chip. It is calculated based on the predefined 195:Core/Src/system_stm32f3xx.c **** * constant and the selected clock source: 196:Core/Src/system_stm32f3xx.c **** * 197:Core/Src/system_stm32f3xx.c **** * - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*) 198:Core/Src/system_stm32f3xx.c **** * 199:Core/Src/system_stm32f3xx.c **** * - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**) 200:Core/Src/system_stm32f3xx.c **** * 201:Core/Src/system_stm32f3xx.c **** * - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**) 202:Core/Src/system_stm32f3xx.c **** * or HSI_VALUE(*) multiplied/divided by the PLL factors. 203:Core/Src/system_stm32f3xx.c **** * 204:Core/Src/system_stm32f3xx.c **** * (*) HSI_VALUE is a constant defined in stm32f3xx_hal.h file (default value 205:Core/Src/system_stm32f3xx.c **** * 8 MHz) but the real value may vary depending on the variations 206:Core/Src/system_stm32f3xx.c **** * in voltage and temperature. 207:Core/Src/system_stm32f3xx.c **** * 208:Core/Src/system_stm32f3xx.c **** * (**) HSE_VALUE is a constant defined in stm32f3xx_hal.h file (default value 209:Core/Src/system_stm32f3xx.c **** * 8 MHz), user has to ensure that HSE_VALUE is same as the real 210:Core/Src/system_stm32f3xx.c **** * frequency of the crystal used. Otherwise, this function may 211:Core/Src/system_stm32f3xx.c **** * have wrong result. 212:Core/Src/system_stm32f3xx.c **** * 213:Core/Src/system_stm32f3xx.c **** * - The result of this function could be not correct when using fractional 214:Core/Src/system_stm32f3xx.c **** * value for HSE crystal. 215:Core/Src/system_stm32f3xx.c **** * 216:Core/Src/system_stm32f3xx.c **** * @param None 217:Core/Src/system_stm32f3xx.c **** * @retval None 218:Core/Src/system_stm32f3xx.c **** */ 219:Core/Src/system_stm32f3xx.c **** void SystemCoreClockUpdate (void) 220:Core/Src/system_stm32f3xx.c **** { 60 .loc 1 220 1 is_stmt 1 view -0 61 .cfi_startproc 62 @ args = 0, pretend = 0, frame = 0 63 @ frame_needed = 0, uses_anonymous_args = 0 64 @ link register save eliminated. 221:Core/Src/system_stm32f3xx.c **** uint32_t tmp = 0, pllmull = 0, pllsource = 0, predivfactor = 0; 65 .loc 1 221 3 view .LVU5 66 .LVL0: 222:Core/Src/system_stm32f3xx.c **** ARM GAS C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s page 6 223:Core/Src/system_stm32f3xx.c **** /* Get SYSCLK source -------------------------------------------------------*/ 224:Core/Src/system_stm32f3xx.c **** tmp = RCC->CFGR & RCC_CFGR_SWS; 67 .loc 1 224 3 view .LVU6 68 .loc 1 224 12 is_stmt 0 view .LVU7 69 0000 134A ldr r2, .L10 70 0002 5368 ldr r3, [r2, #4] 71 .LVL1: 225:Core/Src/system_stm32f3xx.c **** 226:Core/Src/system_stm32f3xx.c **** switch (tmp) 72 .loc 1 226 3 is_stmt 1 view .LVU8 224:Core/Src/system_stm32f3xx.c **** 73 .loc 1 224 7 is_stmt 0 view .LVU9 74 0004 03F00C03 and r3, r3, #12 75 .LVL2: 76 .loc 1 226 3 view .LVU10 77 0008 082B cmp r3, #8 78 000a 0AD0 beq .L9 79 000c 114B ldr r3, .L10+4 80 .LVL3: 81 .L6: 227:Core/Src/system_stm32f3xx.c **** { 228:Core/Src/system_stm32f3xx.c **** case RCC_CFGR_SWS_HSI: /* HSI used as system clock */ 229:Core/Src/system_stm32f3xx.c **** SystemCoreClock = HSI_VALUE; 230:Core/Src/system_stm32f3xx.c **** break; 231:Core/Src/system_stm32f3xx.c **** case RCC_CFGR_SWS_HSE: /* HSE used as system clock */ 232:Core/Src/system_stm32f3xx.c **** SystemCoreClock = HSE_VALUE; 233:Core/Src/system_stm32f3xx.c **** break; 234:Core/Src/system_stm32f3xx.c **** case RCC_CFGR_SWS_PLL: /* PLL used as system clock */ 235:Core/Src/system_stm32f3xx.c **** /* Get PLL clock source and multiplication factor ----------------------*/ 236:Core/Src/system_stm32f3xx.c **** pllmull = RCC->CFGR & RCC_CFGR_PLLMUL; 237:Core/Src/system_stm32f3xx.c **** pllsource = RCC->CFGR & RCC_CFGR_PLLSRC; 238:Core/Src/system_stm32f3xx.c **** pllmull = ( pllmull >> 18) + 2; 239:Core/Src/system_stm32f3xx.c **** 240:Core/Src/system_stm32f3xx.c **** #if defined (STM32F302xE) || defined (STM32F303xE) || defined (STM32F398xx) 241:Core/Src/system_stm32f3xx.c **** predivfactor = (RCC->CFGR2 & RCC_CFGR2_PREDIV) + 1; 242:Core/Src/system_stm32f3xx.c **** if (pllsource == RCC_CFGR_PLLSRC_HSE_PREDIV) 243:Core/Src/system_stm32f3xx.c **** { 244:Core/Src/system_stm32f3xx.c **** /* HSE oscillator clock selected as PREDIV1 clock entry */ 245:Core/Src/system_stm32f3xx.c **** SystemCoreClock = (HSE_VALUE / predivfactor) * pllmull; 246:Core/Src/system_stm32f3xx.c **** } 247:Core/Src/system_stm32f3xx.c **** else 248:Core/Src/system_stm32f3xx.c **** { 249:Core/Src/system_stm32f3xx.c **** /* HSI oscillator clock selected as PREDIV1 clock entry */ 250:Core/Src/system_stm32f3xx.c **** SystemCoreClock = (HSI_VALUE / predivfactor) * pllmull; 251:Core/Src/system_stm32f3xx.c **** } 252:Core/Src/system_stm32f3xx.c **** #else 253:Core/Src/system_stm32f3xx.c **** if (pllsource == RCC_CFGR_PLLSRC_HSI_DIV2) 254:Core/Src/system_stm32f3xx.c **** { 255:Core/Src/system_stm32f3xx.c **** /* HSI oscillator clock divided by 2 selected as PLL clock entry */ 256:Core/Src/system_stm32f3xx.c **** SystemCoreClock = (HSI_VALUE >> 1) * pllmull; 257:Core/Src/system_stm32f3xx.c **** } 258:Core/Src/system_stm32f3xx.c **** else 259:Core/Src/system_stm32f3xx.c **** { 260:Core/Src/system_stm32f3xx.c **** predivfactor = (RCC->CFGR2 & RCC_CFGR2_PREDIV) + 1; 261:Core/Src/system_stm32f3xx.c **** /* HSE oscillator clock selected as PREDIV1 clock entry */ 262:Core/Src/system_stm32f3xx.c **** SystemCoreClock = (HSE_VALUE / predivfactor) * pllmull; 263:Core/Src/system_stm32f3xx.c **** } ARM GAS C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s page 7 264:Core/Src/system_stm32f3xx.c **** #endif /* STM32F302xE || STM32F303xE || STM32F398xx */ 265:Core/Src/system_stm32f3xx.c **** break; 266:Core/Src/system_stm32f3xx.c **** default: /* HSI used as system clock */ 267:Core/Src/system_stm32f3xx.c **** SystemCoreClock = HSI_VALUE; 268:Core/Src/system_stm32f3xx.c **** break; 269:Core/Src/system_stm32f3xx.c **** } 270:Core/Src/system_stm32f3xx.c **** /* Compute HCLK clock frequency ----------------*/ 271:Core/Src/system_stm32f3xx.c **** /* Get HCLK prescaler */ 272:Core/Src/system_stm32f3xx.c **** tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4)]; 82 .loc 1 272 3 is_stmt 1 view .LVU11 83 .loc 1 272 28 is_stmt 0 view .LVU12 84 000e 104A ldr r2, .L10 85 .loc 1 272 22 view .LVU13 86 0010 1148 ldr r0, .L10+8 87 .loc 1 272 28 view .LVU14 88 0012 5268 ldr r2, [r2, #4] 89 .LVL4: 273:Core/Src/system_stm32f3xx.c **** /* HCLK clock frequency */ 274:Core/Src/system_stm32f3xx.c **** SystemCoreClock >>= tmp; 90 .loc 1 274 3 is_stmt 1 view .LVU15 91 .loc 1 274 19 is_stmt 0 view .LVU16 92 0014 1149 ldr r1, .L10+12 272:Core/Src/system_stm32f3xx.c **** /* HCLK clock frequency */ 93 .loc 1 272 52 view .LVU17 94 0016 C2F30312 ubfx r2, r2, #4, #4 95 .LVL5: 272:Core/Src/system_stm32f3xx.c **** /* HCLK clock frequency */ 96 .loc 1 272 7 view .LVU18 97 001a 825C ldrb r2, [r0, r2] @ zero_extendqisi2 98 .loc 1 274 19 view .LVU19 99 001c D340 lsrs r3, r3, r2 100 001e 0B60 str r3, [r1] 275:Core/Src/system_stm32f3xx.c **** } 101 .loc 1 275 1 view .LVU20 102 0020 7047 bx lr 103 .LVL6: 104 .L9: 236:Core/Src/system_stm32f3xx.c **** pllsource = RCC->CFGR & RCC_CFGR_PLLSRC; 105 .loc 1 236 7 is_stmt 1 view .LVU21 236:Core/Src/system_stm32f3xx.c **** pllsource = RCC->CFGR & RCC_CFGR_PLLSRC; 106 .loc 1 236 20 is_stmt 0 view .LVU22 107 0022 5368 ldr r3, [r2, #4] 108 .LVL7: 237:Core/Src/system_stm32f3xx.c **** pllmull = ( pllmull >> 18) + 2; 109 .loc 1 237 7 is_stmt 1 view .LVU23 237:Core/Src/system_stm32f3xx.c **** pllmull = ( pllmull >> 18) + 2; 110 .loc 1 237 22 is_stmt 0 view .LVU24 111 0024 5168 ldr r1, [r2, #4] 112 .LVL8: 238:Core/Src/system_stm32f3xx.c **** 113 .loc 1 238 7 is_stmt 1 view .LVU25 238:Core/Src/system_stm32f3xx.c **** 114 .loc 1 238 27 is_stmt 0 view .LVU26 115 0026 C3F38343 ubfx r3, r3, #18, #4 116 .LVL9: 253:Core/Src/system_stm32f3xx.c **** { 117 .loc 1 253 10 view .LVU27 ARM GAS C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s page 8 118 002a C903 lsls r1, r1, #15 119 .LVL10: 238:Core/Src/system_stm32f3xx.c **** 120 .loc 1 238 15 view .LVU28 121 002c 03F10203 add r3, r3, #2 122 .LVL11: 253:Core/Src/system_stm32f3xx.c **** { 123 .loc 1 253 7 is_stmt 1 view .LVU29 253:Core/Src/system_stm32f3xx.c **** { 124 .loc 1 253 10 is_stmt 0 view .LVU30 125 0030 03D4 bmi .L7 256:Core/Src/system_stm32f3xx.c **** } 126 .loc 1 256 9 is_stmt 1 view .LVU31 256:Core/Src/system_stm32f3xx.c **** } 127 .loc 1 256 44 is_stmt 0 view .LVU32 128 0032 0B4A ldr r2, .L10+16 129 0034 02FB03F3 mul r3, r2, r3 130 .LVL12: 256:Core/Src/system_stm32f3xx.c **** } 131 .loc 1 256 44 view .LVU33 132 0038 E9E7 b .L6 133 .LVL13: 134 .L7: 260:Core/Src/system_stm32f3xx.c **** /* HSE oscillator clock selected as PREDIV1 clock entry */ 135 .loc 1 260 9 is_stmt 1 view .LVU34 260:Core/Src/system_stm32f3xx.c **** /* HSE oscillator clock selected as PREDIV1 clock entry */ 136 .loc 1 260 28 is_stmt 0 view .LVU35 137 003a D26A ldr r2, [r2, #44] 138 .LVL14: 262:Core/Src/system_stm32f3xx.c **** } 139 .loc 1 262 9 is_stmt 1 view .LVU36 262:Core/Src/system_stm32f3xx.c **** } 140 .loc 1 262 38 is_stmt 0 view .LVU37 141 003c 0549 ldr r1, .L10+4 260:Core/Src/system_stm32f3xx.c **** /* HSE oscillator clock selected as PREDIV1 clock entry */ 142 .loc 1 260 36 view .LVU38 143 003e 02F00F02 and r2, r2, #15 144 .LVL15: 260:Core/Src/system_stm32f3xx.c **** /* HSE oscillator clock selected as PREDIV1 clock entry */ 145 .loc 1 260 22 view .LVU39 146 0042 0132 adds r2, r2, #1 147 .LVL16: 262:Core/Src/system_stm32f3xx.c **** } 148 .loc 1 262 38 view .LVU40 149 0044 B1FBF2F2 udiv r2, r1, r2 150 .LVL17: 262:Core/Src/system_stm32f3xx.c **** } 151 .loc 1 262 54 view .LVU41 152 0048 02FB03F3 mul r3, r2, r3 153 .LVL18: 262:Core/Src/system_stm32f3xx.c **** } 154 .loc 1 262 54 view .LVU42 155 004c DFE7 b .L6 156 .L11: 157 004e 00BF .align 2 158 .L10: 159 0050 00100240 .word 1073876992 ARM GAS C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s page 9 160 0054 00127A00 .word 8000000 161 0058 00000000 .word .LANCHOR1 162 005c 00000000 .word .LANCHOR0 163 0060 00093D00 .word 4000000 164 .cfi_endproc 165 .LFE131: 167 .global APBPrescTable 168 .global AHBPrescTable 169 .global SystemCoreClock 170 .section .data.SystemCoreClock,"aw" 171 .align 2 172 .set .LANCHOR0,. + 0 175 SystemCoreClock: 176 0000 00127A00 .word 8000000 177 .section .rodata.AHBPrescTable,"a" 178 .align 2 179 .set .LANCHOR1,. + 0 182 AHBPrescTable: 183 0000 00000000 .ascii "\000\000\000\000\000\000\000\000\001\002\003\004\006" 183 00000000 183 01020304 183 06 184 000d 070809 .ascii "\007\010\011" 185 .section .rodata.APBPrescTable,"a" 186 .align 2 189 APBPrescTable: 190 0000 00000000 .ascii "\000\000\000\000\001\002\003\004" 190 01020304 191 .text 192 .Letext0: 193 .file 2 "d:\\arm-gcc\\arm-none-eabi\\include\\machine\\_default_types.h" 194 .file 3 "d:\\arm-gcc\\arm-none-eabi\\include\\sys\\_stdint.h" 195 .file 4 "Drivers/CMSIS/Include/core_cm4.h" 196 .file 5 "Drivers/CMSIS/Device/ST/STM32F3xx/Include/system_stm32f3xx.h" 197 .file 6 "Drivers/CMSIS/Device/ST/STM32F3xx/Include/stm32f302xc.h" ARM GAS C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s page 10 DEFINED SYMBOLS *ABS*:00000000 system_stm32f3xx.c C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s:20 .text.SystemInit:00000000 $t C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s:27 .text.SystemInit:00000000 SystemInit C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s:46 .text.SystemInit:00000010 $d C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s:51 .text.SystemCoreClockUpdate:00000000 $t C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s:58 .text.SystemCoreClockUpdate:00000000 SystemCoreClockUpdate C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s:159 .text.SystemCoreClockUpdate:00000050 $d C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s:189 .rodata.APBPrescTable:00000000 APBPrescTable C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s:182 .rodata.AHBPrescTable:00000000 AHBPrescTable C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s:175 .data.SystemCoreClock:00000000 SystemCoreClock C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s:171 .data.SystemCoreClock:00000000 $d C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s:178 .rodata.AHBPrescTable:00000000 $d C:\Users\zl835\AppData\Local\Temp\cc9aF3u8.s:186 .rodata.APBPrescTable:00000000 $d NO UNDEFINED SYMBOLS