| 2024-01-27 16:35:22 | arthur.cai | 创建文件
+ */
+
+#ifndef SOFT_I2C_DEV_H
+#define SOFT_I2C_DEV_H
+
+#include "bsp_soft_i2c.h"
+
+SOFT_I2C_EXT(I2C_DEV);
+
+#endif // SOFT_I2C_DEV_H
diff --git a/test_project/STM32F1_PRJ/main.c b/test_project/STM32F1_PRJ/main.c
new file mode 100644
index 0000000..c9ab23c
--- /dev/null
+++ b/test_project/STM32F1_PRJ/main.c
@@ -0,0 +1,99 @@
+/**
+ ******************************************************************************
+ * @file Project/STM32F10x_StdPeriph_Template/main.c
+ * @author MCD Application Team
+ * @version V3.6.0
+ * @date 20-September-2021
+ * @brief Main program body
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2011 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software is licensed under terms that can be found in the LICENSE file
+ * in the root directory of this software component.
+ * If no LICENSE file comes with this software, it is provided AS-IS.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x.h"
+#include "soft_i2c_dev.h"
+#include
+#include
+
+void block_delay(void) {
+ uint32_t delayCnt = 0x119400;
+ while (delayCnt > 0) {
+ delayCnt--;
+ }
+}
+
+void led_init(void) {
+ GPIO_InitTypeDef GPIO_InitStructure;
+
+ /* Enable GPIO_LED clock */
+ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
+
+ /* Configure the GPIO_LED pin */
+ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
+ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+
+ GPIO_Init(GPIOC, &GPIO_InitStructure);
+}
+
+void led_on(void) {
+ GPIO_SetBits(GPIOC, GPIO_Pin_13);
+}
+
+void led_off(void) {
+ GPIO_ResetBits(GPIOC, GPIO_Pin_13);
+}
+
+#define SLAVE_ADDR 0xA0 ///< 从机地址
+#define REG_ADDR 0x00 ///< 寄存器地址
+
+uint8_t w_buf[8] = {0xAA, 0xA5, 0x5A, 0xFF, 0xFA, 0xAF, 0xDD, 0xEE};
+uint8_t r_buf[8] = {0};
+uint8_t flag = 1;
+bool equal = false;
+soft_i2c_err_t ret = SOFT_I2C_ERR_OK;
+
+/**
+ * @brief Main program.
+ * @param None
+ * @retval None
+ */
+int main(void) {
+ led_init();
+ led_on();
+
+ ret = soft_i2c_init(I2C_DEV);
+
+ while (1) {
+ led_on();
+ block_delay();
+ {
+ memset(r_buf, 0, 8);
+ if (flag) {
+ ret = soft_i2c_write(I2C_DEV, SLAVE_ADDR, REG_ADDR, 1, w_buf, 8);
+ // if (ret != SOFT_I2C_ERR_OK) {
+ // while(1);
+ // }
+ equal = false;
+ } else {
+ ret = soft_i2c_read(I2C_DEV, SLAVE_ADDR, REG_ADDR, 1, r_buf, 8);
+ // if (ret != SOFT_I2C_ERR_OK) {
+ // while(1);
+ // }
+ equal = (memcmp(r_buf, w_buf, 8) == 0) ? true : false;
+ }
+ flag = !flag;
+ }
+ led_off();
+ block_delay();
+ }
+}
diff --git a/test_project/STM32F1_PRJ/stm32f10x_conf.h b/test_project/STM32F1_PRJ/stm32f10x_conf.h
new file mode 100644
index 0000000..a95acc4
--- /dev/null
+++ b/test_project/STM32F1_PRJ/stm32f10x_conf.h
@@ -0,0 +1,75 @@
+/**
+ ******************************************************************************
+ * @file Project/STM32F10x_StdPeriph_Template/stm32f10x_conf.h
+ * @author MCD Application Team
+ * @version V3.6.0
+ * @date 20-September-2021
+ * @brief Library configuration file.
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2011 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software is licensed under terms that can be found in the LICENSE file
+ * in the root directory of this software component.
+ * If no LICENSE file comes with this software, it is provided AS-IS.
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F10x_CONF_H
+#define __STM32F10x_CONF_H
+
+/* Includes ------------------------------------------------------------------*/
+/* Uncomment/Comment the line below to enable/disable peripheral header file inclusion */
+#include "stm32f10x_adc.h"
+#include "stm32f10x_bkp.h"
+#include "stm32f10x_can.h"
+#include "stm32f10x_cec.h"
+#include "stm32f10x_crc.h"
+#include "stm32f10x_dac.h"
+#include "stm32f10x_dbgmcu.h"
+#include "stm32f10x_dma.h"
+#include "stm32f10x_exti.h"
+#include "stm32f10x_flash.h"
+#include "stm32f10x_fsmc.h"
+#include "stm32f10x_gpio.h"
+#include "stm32f10x_i2c.h"
+#include "stm32f10x_iwdg.h"
+#include "stm32f10x_pwr.h"
+#include "stm32f10x_rcc.h"
+#include "stm32f10x_rtc.h"
+#include "stm32f10x_sdio.h"
+#include "stm32f10x_spi.h"
+#include "stm32f10x_tim.h"
+#include "stm32f10x_usart.h"
+#include "stm32f10x_wwdg.h"
+#include "misc.h" /* High level functions for NVIC and SysTick (add-on to CMSIS functions) */
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/* Uncomment the line below to expanse the "assert_param" macro in the
+ Standard Peripheral Library drivers code */
+/* #define USE_FULL_ASSERT 1 */
+
+/* Exported macro ------------------------------------------------------------*/
+#ifdef USE_FULL_ASSERT
+
+/**
+ * @brief The assert_param macro is used for function's parameters check.
+ * @param expr: If expr is false, it calls assert_failed function which reports
+ * the name of the source file and the source line number of the call
+ * that failed. If expr is true, it returns no value.
+ * @retval None
+ */
+ #define assert_param(expr) ((expr) ? (void)0 : assert_failed((uint8_t *)__FILE__, __LINE__))
+/* Exported functions ------------------------------------------------------- */
+ void assert_failed(uint8_t* file, uint32_t line);
+#else
+ #define assert_param(expr) ((void)0)
+#endif /* USE_FULL_ASSERT */
+
+#endif /* __STM32F10x_CONF_H */
+
diff --git a/test_project/STM32F1_PRJ/stm32f10x_it.c b/test_project/STM32F1_PRJ/stm32f10x_it.c
new file mode 100644
index 0000000..7f7c065
--- /dev/null
+++ b/test_project/STM32F1_PRJ/stm32f10x_it.c
@@ -0,0 +1,158 @@
+/**
+ ******************************************************************************
+ * @file Project/STM32F10x_StdPeriph_Template/stm32f10x_it.c
+ * @author MCD Application Team
+ * @version V3.6.0
+ * @date 20-September-2021
+ * @brief Main Interrupt Service Routines.
+ * This file provides template for all exceptions handler and
+ * peripherals interrupt service routine.
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2011 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software is licensed under terms that can be found in the LICENSE file
+ * in the root directory of this software component.
+ * If no LICENSE file comes with this software, it is provided AS-IS.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x_it.h"
+
+/** @addtogroup STM32F10x_StdPeriph_Template
+ * @{
+ */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/******************************************************************************/
+/* Cortex-M3 Processor Exceptions Handlers */
+/******************************************************************************/
+
+/**
+ * @brief This function handles NMI exception.
+ * @param None
+ * @retval None
+ */
+void NMI_Handler(void)
+{
+}
+
+/**
+ * @brief This function handles Hard Fault exception.
+ * @param None
+ * @retval None
+ */
+void HardFault_Handler(void)
+{
+ /* Go to infinite loop when Hard Fault exception occurs */
+ while (1)
+ {
+ }
+}
+
+/**
+ * @brief This function handles Memory Manage exception.
+ * @param None
+ * @retval None
+ */
+void MemManage_Handler(void)
+{
+ /* Go to infinite loop when Memory Manage exception occurs */
+ while (1)
+ {
+ }
+}
+
+/**
+ * @brief This function handles Bus Fault exception.
+ * @param None
+ * @retval None
+ */
+void BusFault_Handler(void)
+{
+ /* Go to infinite loop when Bus Fault exception occurs */
+ while (1)
+ {
+ }
+}
+
+/**
+ * @brief This function handles Usage Fault exception.
+ * @param None
+ * @retval None
+ */
+void UsageFault_Handler(void)
+{
+ /* Go to infinite loop when Usage Fault exception occurs */
+ while (1)
+ {
+ }
+}
+
+/**
+ * @brief This function handles SVCall exception.
+ * @param None
+ * @retval None
+ */
+void SVC_Handler(void)
+{
+}
+
+/**
+ * @brief This function handles Debug Monitor exception.
+ * @param None
+ * @retval None
+ */
+void DebugMon_Handler(void)
+{
+}
+
+/**
+ * @brief This function handles PendSVC exception.
+ * @param None
+ * @retval None
+ */
+void PendSV_Handler(void)
+{
+}
+
+/**
+ * @brief This function handles SysTick Handler.
+ * @param None
+ * @retval None
+ */
+void SysTick_Handler(void)
+{
+}
+
+/******************************************************************************/
+/* STM32F10x Peripherals Interrupt Handlers */
+/* Add here the Interrupt Handler for the used peripheral(s) (PPP), for the */
+/* available peripheral interrupt handler's name please refer to the startup */
+/* file (startup_stm32f10x_xx.s). */
+/******************************************************************************/
+
+/**
+ * @brief This function handles PPP interrupt request.
+ * @param None
+ * @retval None
+ */
+/*void PPP_IRQHandler(void)
+{
+}*/
+
+/**
+ * @}
+ */
+
+
diff --git a/test_project/STM32F1_PRJ/stm32f10x_it.h b/test_project/STM32F1_PRJ/stm32f10x_it.h
new file mode 100644
index 0000000..cb075d7
--- /dev/null
+++ b/test_project/STM32F1_PRJ/stm32f10x_it.h
@@ -0,0 +1,52 @@
+/**
+ ******************************************************************************
+ * @file Project/STM32F10x_StdPeriph_Template/stm32f10x_it.h
+ * @author MCD Application Team
+ * @version V3.6.0
+ * @date 20-September-2021
+ * @brief This file contains the headers of the interrupt handlers.
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2011 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software is licensed under terms that can be found in the LICENSE file
+ * in the root directory of this software component.
+ * If no LICENSE file comes with this software, it is provided AS-IS.
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F10x_IT_H
+#define __STM32F10x_IT_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x.h"
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions ------------------------------------------------------- */
+
+void NMI_Handler(void);
+void HardFault_Handler(void);
+void MemManage_Handler(void);
+void BusFault_Handler(void);
+void UsageFault_Handler(void);
+void SVC_Handler(void);
+void DebugMon_Handler(void);
+void PendSV_Handler(void);
+void SysTick_Handler(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F10x_IT_H */
+
diff --git a/test_project/STM32F1_PRJ/system_stm32f10x.c b/test_project/STM32F1_PRJ/system_stm32f10x.c
new file mode 100644
index 0000000..bc87ffc
--- /dev/null
+++ b/test_project/STM32F1_PRJ/system_stm32f10x.c
@@ -0,0 +1,1092 @@
+/**
+ ******************************************************************************
+ * @file system_stm32f10x.c
+ * @author MCD Application Team
+ * @version V3.6.0
+ * @date 20-September-2021
+ * @brief CMSIS Cortex-M3 Device Peripheral Access Layer System Source File.
+ *
+ * 1. This file provides two functions and one global variable to be called from
+ * user application:
+ * - SystemInit(): Setups the system clock (System clock source, PLL Multiplier
+ * factors, AHB/APBx prescalers and Flash settings).
+ * This function is called at startup just after reset and
+ * before branch to main program. This call is made inside
+ * the "startup_stm32f10x_xx.s" file.
+ *
+ * - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
+ * by the user application to setup the SysTick
+ * timer or configure other parameters.
+ *
+ * - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
+ * be called whenever the core clock is changed
+ * during program execution.
+ *
+ * 2. After each device reset the HSI (8 MHz) is used as system clock source.
+ * Then SystemInit() function is called, in "startup_stm32f10x_xx.s" file, to
+ * configure the system clock before to branch to main program.
+ *
+ * 3. If the system clock source selected by user fails to startup, the SystemInit()
+ * function will do nothing and HSI still used as system clock source. User can
+ * add some code to deal with this issue inside the SetSysClock() function.
+ *
+ * 4. The default value of HSE crystal is set to 8 MHz (or 25 MHz, depedning on
+ * the product used), refer to "HSE_VALUE" define in "stm32f10x.h" file.
+ * When HSE is used as system clock source, directly or through PLL, and you
+ * are using different crystal you have to adapt the HSE value to your own
+ * configuration.
+ *
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2011 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software is licensed under terms that can be found in the LICENSE file
+ * in the root directory of this software component.
+ * If no LICENSE file comes with this software, it is provided AS-IS.
+ *
+ ******************************************************************************
+ */
+
+/** @addtogroup CMSIS
+ * @{
+ */
+
+/** @addtogroup stm32f10x_system
+ * @{
+ */
+
+/** @addtogroup STM32F10x_System_Private_Includes
+ * @{
+ */
+
+#include "stm32f10x.h"
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F10x_System_Private_TypesDefinitions
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F10x_System_Private_Defines
+ * @{
+ */
+
+/*!< Uncomment the line corresponding to the desired System clock (SYSCLK)
+ frequency (after reset the HSI is used as SYSCLK source)
+
+ IMPORTANT NOTE:
+ ==============
+ 1. After each device reset the HSI is used as System clock source.
+
+ 2. Please make sure that the selected System clock doesn't exceed your device's
+ maximum frequency.
+
+ 3. If none of the define below is enabled, the HSI is used as System clock
+ source.
+
+ 4. The System clock configuration functions provided within this file assume that:
+ - For Low, Medium and High density Value line devices an external 8MHz
+ crystal is used to drive the System clock.
+ - For Low, Medium and High density devices an external 8MHz crystal is
+ used to drive the System clock.
+ - For Connectivity line devices an external 25MHz crystal is used to drive
+ the System clock.
+ If you are using different crystal you have to adapt those functions accordingly.
+ */
+
+#if defined (STM32F10X_LD_VL) || (defined STM32F10X_MD_VL) || (defined STM32F10X_HD_VL)
+/* #define SYSCLK_FREQ_HSE HSE_VALUE */
+ #define SYSCLK_FREQ_24MHz 24000000
+#else
+/* #define SYSCLK_FREQ_HSE HSE_VALUE */
+/* #define SYSCLK_FREQ_24MHz 24000000 */
+/* #define SYSCLK_FREQ_36MHz 36000000 */
+/* #define SYSCLK_FREQ_48MHz 48000000 */
+/* #define SYSCLK_FREQ_56MHz 56000000 */
+#define SYSCLK_FREQ_72MHz 72000000
+#endif
+
+/*!< Uncomment the following line if you need to use external SRAM mounted
+ on STM3210E-EVAL board (STM32 High density and XL-density devices) or on
+ STM32100E-EVAL board (STM32 High-density value line devices) as data memory */
+#if defined (STM32F10X_HD) || (defined STM32F10X_XL) || (defined STM32F10X_HD_VL)
+/* #define DATA_IN_ExtSRAM */
+#endif
+
+/*!< Uncomment the following line if you need to relocate your vector Table in
+ Internal SRAM. */
+/* #define VECT_TAB_SRAM */
+#define VECT_TAB_OFFSET 0x0 /*!< Vector Table base offset field.
+ This value must be a multiple of 0x200. */
+
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F10x_System_Private_Macros
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F10x_System_Private_Variables
+ * @{
+ */
+
+/*******************************************************************************
+* Clock Definitions
+*******************************************************************************/
+#ifdef SYSCLK_FREQ_HSE
+ uint32_t SystemCoreClock = SYSCLK_FREQ_HSE; /*!< System Clock Frequency (Core Clock) */
+#elif defined SYSCLK_FREQ_24MHz
+ uint32_t SystemCoreClock = SYSCLK_FREQ_24MHz; /*!< System Clock Frequency (Core Clock) */
+#elif defined SYSCLK_FREQ_36MHz
+ uint32_t SystemCoreClock = SYSCLK_FREQ_36MHz; /*!< System Clock Frequency (Core Clock) */
+#elif defined SYSCLK_FREQ_48MHz
+ uint32_t SystemCoreClock = SYSCLK_FREQ_48MHz; /*!< System Clock Frequency (Core Clock) */
+#elif defined SYSCLK_FREQ_56MHz
+ uint32_t SystemCoreClock = SYSCLK_FREQ_56MHz; /*!< System Clock Frequency (Core Clock) */
+#elif defined SYSCLK_FREQ_72MHz
+ uint32_t SystemCoreClock = SYSCLK_FREQ_72MHz; /*!< System Clock Frequency (Core Clock) */
+#else /*!< HSI Selected as System Clock source */
+ uint32_t SystemCoreClock = HSI_VALUE; /*!< System Clock Frequency (Core Clock) */
+#endif
+
+__I uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F10x_System_Private_FunctionPrototypes
+ * @{
+ */
+
+static void SetSysClock(void);
+
+#ifdef SYSCLK_FREQ_HSE
+ static void SetSysClockToHSE(void);
+#elif defined SYSCLK_FREQ_24MHz
+ static void SetSysClockTo24(void);
+#elif defined SYSCLK_FREQ_36MHz
+ static void SetSysClockTo36(void);
+#elif defined SYSCLK_FREQ_48MHz
+ static void SetSysClockTo48(void);
+#elif defined SYSCLK_FREQ_56MHz
+ static void SetSysClockTo56(void);
+#elif defined SYSCLK_FREQ_72MHz
+ static void SetSysClockTo72(void);
+#endif
+
+#ifdef DATA_IN_ExtSRAM
+ static void SystemInit_ExtMemCtl(void);
+#endif /* DATA_IN_ExtSRAM */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F10x_System_Private_Functions
+ * @{
+ */
+
+/**
+ * @brief Setup the microcontroller system
+ * Initialize the Embedded Flash Interface, the PLL and update the
+ * SystemCoreClock variable.
+ * @note This function should be used only after reset.
+ * @param None
+ * @retval None
+ */
+void SystemInit (void)
+{
+ /* Reset the RCC clock configuration to the default reset state(for debug purpose) */
+ /* Set HSION bit */
+ RCC->CR |= (uint32_t)0x00000001;
+
+ /* Reset SW, HPRE, PPRE1, PPRE2, ADCPRE and MCO bits */
+#ifndef STM32F10X_CL
+ RCC->CFGR &= (uint32_t)0xF8FF0000;
+#else
+ RCC->CFGR &= (uint32_t)0xF0FF0000;
+#endif /* STM32F10X_CL */
+
+ /* Reset HSEON, CSSON and PLLON bits */
+ RCC->CR &= (uint32_t)0xFEF6FFFF;
+
+ /* Reset HSEBYP bit */
+ RCC->CR &= (uint32_t)0xFFFBFFFF;
+
+ /* Reset PLLSRC, PLLXTPRE, PLLMUL and USBPRE/OTGFSPRE bits */
+ RCC->CFGR &= (uint32_t)0xFF80FFFF;
+
+#ifdef STM32F10X_CL
+ /* Reset PLL2ON and PLL3ON bits */
+ RCC->CR &= (uint32_t)0xEBFFFFFF;
+
+ /* Disable all interrupts and clear pending bits */
+ RCC->CIR = 0x00FF0000;
+
+ /* Reset CFGR2 register */
+ RCC->CFGR2 = 0x00000000;
+#elif defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || (defined STM32F10X_HD_VL)
+ /* Disable all interrupts and clear pending bits */
+ RCC->CIR = 0x009F0000;
+
+ /* Reset CFGR2 register */
+ RCC->CFGR2 = 0x00000000;
+#else
+ /* Disable all interrupts and clear pending bits */
+ RCC->CIR = 0x009F0000;
+#endif /* STM32F10X_CL */
+
+#if defined (STM32F10X_HD) || (defined STM32F10X_XL) || (defined STM32F10X_HD_VL)
+ #ifdef DATA_IN_ExtSRAM
+ SystemInit_ExtMemCtl();
+ #endif /* DATA_IN_ExtSRAM */
+#endif
+
+ /* Configure the System clock frequency, HCLK, PCLK2 and PCLK1 prescalers */
+ /* Configure the Flash Latency cycles and enable prefetch buffer */
+ SetSysClock();
+
+#ifdef VECT_TAB_SRAM
+ SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM. */
+#else
+ SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH. */
+#endif
+}
+
+/**
+ * @brief Update SystemCoreClock variable according to Clock Register Values.
+ * The SystemCoreClock variable contains the core clock (HCLK), it can
+ * be used by the user application to setup the SysTick timer or configure
+ * other parameters.
+ *
+ * @note Each time the core clock (HCLK) changes, this function must be called
+ * to update SystemCoreClock variable value. Otherwise, any configuration
+ * based on this variable will be incorrect.
+ *
+ * @note - The system frequency computed by this function is not the real
+ * frequency in the chip. It is calculated based on the predefined
+ * constant and the selected clock source:
+ *
+ * - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*)
+ *
+ * - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**)
+ *
+ * - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**)
+ * or HSI_VALUE(*) multiplied by the PLL factors.
+ *
+ * (*) HSI_VALUE is a constant defined in stm32f1xx.h file (default value
+ * 8 MHz) but the real value may vary depending on the variations
+ * in voltage and temperature.
+ *
+ * (**) HSE_VALUE is a constant defined in stm32f1xx.h file (default value
+ * 8 MHz or 25 MHz, depedning on the product used), user has to ensure
+ * that HSE_VALUE is same as the real frequency of the crystal used.
+ * Otherwise, this function may have wrong result.
+ *
+ * - The result of this function could be not correct when using fractional
+ * value for HSE crystal.
+ * @param None
+ * @retval None
+ */
+void SystemCoreClockUpdate (void)
+{
+ uint32_t tmp = 0, pllmull = 0, pllsource = 0;
+
+#ifdef STM32F10X_CL
+ uint32_t prediv1source = 0, prediv1factor = 0, prediv2factor = 0, pll2mull = 0;
+#endif /* STM32F10X_CL */
+
+#if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || (defined STM32F10X_HD_VL)
+ uint32_t prediv1factor = 0;
+#endif /* STM32F10X_LD_VL or STM32F10X_MD_VL or STM32F10X_HD_VL */
+
+ /* Get SYSCLK source -------------------------------------------------------*/
+ tmp = RCC->CFGR & RCC_CFGR_SWS;
+
+ switch (tmp)
+ {
+ case 0x00: /* HSI used as system clock */
+ SystemCoreClock = HSI_VALUE;
+ break;
+ case 0x04: /* HSE used as system clock */
+ SystemCoreClock = HSE_VALUE;
+ break;
+ case 0x08: /* PLL used as system clock */
+
+ /* Get PLL clock source and multiplication factor ----------------------*/
+ pllmull = RCC->CFGR & RCC_CFGR_PLLMULL;
+ pllsource = RCC->CFGR & RCC_CFGR_PLLSRC;
+
+#ifndef STM32F10X_CL
+ pllmull = ( pllmull >> 18) + 2;
+
+ if (pllsource == 0x00)
+ {
+ /* HSI oscillator clock divided by 2 selected as PLL clock entry */
+ SystemCoreClock = (HSI_VALUE >> 1) * pllmull;
+ }
+ else
+ {
+ #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || (defined STM32F10X_HD_VL)
+ prediv1factor = (RCC->CFGR2 & RCC_CFGR2_PREDIV1) + 1;
+ /* HSE oscillator clock selected as PREDIV1 clock entry */
+ SystemCoreClock = (HSE_VALUE / prediv1factor) * pllmull;
+ #else
+ /* HSE selected as PLL clock entry */
+ if ((RCC->CFGR & RCC_CFGR_PLLXTPRE) != (uint32_t)RESET)
+ {/* HSE oscillator clock divided by 2 */
+ SystemCoreClock = (HSE_VALUE >> 1) * pllmull;
+ }
+ else
+ {
+ SystemCoreClock = HSE_VALUE * pllmull;
+ }
+ #endif
+ }
+#else
+ pllmull = pllmull >> 18;
+
+ if (pllmull != 0x0D)
+ {
+ pllmull += 2;
+ }
+ else
+ { /* PLL multiplication factor = PLL input clock * 6.5 */
+ pllmull = 13 / 2;
+ }
+
+ if (pllsource == 0x00)
+ {
+ /* HSI oscillator clock divided by 2 selected as PLL clock entry */
+ SystemCoreClock = (HSI_VALUE >> 1) * pllmull;
+ }
+ else
+ {/* PREDIV1 selected as PLL clock entry */
+
+ /* Get PREDIV1 clock source and division factor */
+ prediv1source = RCC->CFGR2 & RCC_CFGR2_PREDIV1SRC;
+ prediv1factor = (RCC->CFGR2 & RCC_CFGR2_PREDIV1) + 1;
+
+ if (prediv1source == 0)
+ {
+ /* HSE oscillator clock selected as PREDIV1 clock entry */
+ SystemCoreClock = (HSE_VALUE / prediv1factor) * pllmull;
+ }
+ else
+ {/* PLL2 clock selected as PREDIV1 clock entry */
+
+ /* Get PREDIV2 division factor and PLL2 multiplication factor */
+ prediv2factor = ((RCC->CFGR2 & RCC_CFGR2_PREDIV2) >> 4) + 1;
+ pll2mull = ((RCC->CFGR2 & RCC_CFGR2_PLL2MUL) >> 8 ) + 2;
+ SystemCoreClock = (((HSE_VALUE / prediv2factor) * pll2mull) / prediv1factor) * pllmull;
+ }
+ }
+#endif /* STM32F10X_CL */
+ break;
+
+ default:
+ SystemCoreClock = HSI_VALUE;
+ break;
+ }
+
+ /* Compute HCLK clock frequency ----------------*/
+ /* Get HCLK prescaler */
+ tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4)];
+ /* HCLK clock frequency */
+ SystemCoreClock >>= tmp;
+}
+
+/**
+ * @brief Configures the System clock frequency, HCLK, PCLK2 and PCLK1 prescalers.
+ * @param None
+ * @retval None
+ */
+static void SetSysClock(void)
+{
+#ifdef SYSCLK_FREQ_HSE
+ SetSysClockToHSE();
+#elif defined SYSCLK_FREQ_24MHz
+ SetSysClockTo24();
+#elif defined SYSCLK_FREQ_36MHz
+ SetSysClockTo36();
+#elif defined SYSCLK_FREQ_48MHz
+ SetSysClockTo48();
+#elif defined SYSCLK_FREQ_56MHz
+ SetSysClockTo56();
+#elif defined SYSCLK_FREQ_72MHz
+ SetSysClockTo72();
+#endif
+
+ /* If none of the define above is enabled, the HSI is used as System clock
+ source (default after reset) */
+}
+
+/**
+ * @brief Setup the external memory controller. Called in startup_stm32f10x.s
+ * before jump to __main
+ * @param None
+ * @retval None
+ */
+#ifdef DATA_IN_ExtSRAM
+/**
+ * @brief Setup the external memory controller.
+ * Called in startup_stm32f10x_xx.s/.c before jump to main.
+ * This function configures the external SRAM mounted on STM3210E-EVAL
+ * board (STM32 High density devices). This SRAM will be used as program
+ * data memory (including heap and stack).
+ * @param None
+ * @retval None
+ */
+void SystemInit_ExtMemCtl(void)
+{
+/*!< FSMC Bank1 NOR/SRAM3 is used for the STM3210E-EVAL, if another Bank is
+ required, then adjust the Register Addresses */
+
+ /* Enable FSMC clock */
+ RCC->AHBENR = 0x00000114;
+
+ /* Enable GPIOD, GPIOE, GPIOF and GPIOG clocks */
+ RCC->APB2ENR = 0x000001E0;
+
+/* --------------- SRAM Data lines, NOE and NWE configuration ---------------*/
+/*---------------- SRAM Address lines configuration -------------------------*/
+/*---------------- NOE and NWE configuration --------------------------------*/
+/*---------------- NE3 configuration ----------------------------------------*/
+/*---------------- NBL0, NBL1 configuration ---------------------------------*/
+
+ GPIOD->CRL = 0x44BB44BB;
+ GPIOD->CRH = 0xBBBBBBBB;
+
+ GPIOE->CRL = 0xB44444BB;
+ GPIOE->CRH = 0xBBBBBBBB;
+
+ GPIOF->CRL = 0x44BBBBBB;
+ GPIOF->CRH = 0xBBBB4444;
+
+ GPIOG->CRL = 0x44BBBBBB;
+ GPIOG->CRH = 0x44444B44;
+
+/*---------------- FSMC Configuration ---------------------------------------*/
+/*---------------- Enable FSMC Bank1_SRAM Bank ------------------------------*/
+
+ FSMC_Bank1->BTCR[4] = 0x00001011;
+ FSMC_Bank1->BTCR[5] = 0x00000200;
+}
+#endif /* DATA_IN_ExtSRAM */
+
+#ifdef SYSCLK_FREQ_HSE
+/**
+ * @brief Selects HSE as System clock source and configure HCLK, PCLK2
+ * and PCLK1 prescalers.
+ * @note This function should be used only after reset.
+ * @param None
+ * @retval None
+ */
+static void SetSysClockToHSE(void)
+{
+ __IO uint32_t StartUpCounter = 0, HSEStatus = 0;
+
+ /* SYSCLK, HCLK, PCLK2 and PCLK1 configuration ---------------------------*/
+ /* Enable HSE */
+ RCC->CR |= ((uint32_t)RCC_CR_HSEON);
+
+ /* Wait till HSE is ready and if Time out is reached exit */
+ do
+ {
+ HSEStatus = RCC->CR & RCC_CR_HSERDY;
+ StartUpCounter++;
+ } while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
+
+ if ((RCC->CR & RCC_CR_HSERDY) != RESET)
+ {
+ HSEStatus = (uint32_t)0x01;
+ }
+ else
+ {
+ HSEStatus = (uint32_t)0x00;
+ }
+
+ if (HSEStatus == (uint32_t)0x01)
+ {
+
+#if !defined STM32F10X_LD_VL && !defined STM32F10X_MD_VL && !defined STM32F10X_HD_VL
+ /* Enable Prefetch Buffer */
+ FLASH->ACR |= FLASH_ACR_PRFTBE;
+
+ /* Flash 0 wait state */
+ FLASH->ACR &= (uint32_t)((uint32_t)~FLASH_ACR_LATENCY);
+
+#ifndef STM32F10X_CL
+ FLASH->ACR |= (uint32_t)FLASH_ACR_LATENCY_0;
+#else
+ if (HSE_VALUE <= 24000000)
+ {
+ FLASH->ACR |= (uint32_t)FLASH_ACR_LATENCY_0;
+ }
+ else
+ {
+ FLASH->ACR |= (uint32_t)FLASH_ACR_LATENCY_1;
+ }
+#endif /* STM32F10X_CL */
+#endif
+
+ /* HCLK = SYSCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_HPRE_DIV1;
+
+ /* PCLK2 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE2_DIV1;
+
+ /* PCLK1 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE1_DIV1;
+
+ /* Select HSE as system clock source */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_SW));
+ RCC->CFGR |= (uint32_t)RCC_CFGR_SW_HSE;
+
+ /* Wait till HSE is used as system clock source */
+ while ((RCC->CFGR & (uint32_t)RCC_CFGR_SWS) != (uint32_t)0x04)
+ {
+ }
+ }
+ else
+ { /* If HSE fails to start-up, the application will have wrong clock
+ configuration. User can add here some code to deal with this error */
+ }
+}
+#elif defined SYSCLK_FREQ_24MHz
+/**
+ * @brief Sets System clock frequency to 24MHz and configure HCLK, PCLK2
+ * and PCLK1 prescalers.
+ * @note This function should be used only after reset.
+ * @param None
+ * @retval None
+ */
+static void SetSysClockTo24(void)
+{
+ __IO uint32_t StartUpCounter = 0, HSEStatus = 0;
+
+ /* SYSCLK, HCLK, PCLK2 and PCLK1 configuration ---------------------------*/
+ /* Enable HSE */
+ RCC->CR |= ((uint32_t)RCC_CR_HSEON);
+
+ /* Wait till HSE is ready and if Time out is reached exit */
+ do
+ {
+ HSEStatus = RCC->CR & RCC_CR_HSERDY;
+ StartUpCounter++;
+ } while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
+
+ if ((RCC->CR & RCC_CR_HSERDY) != RESET)
+ {
+ HSEStatus = (uint32_t)0x01;
+ }
+ else
+ {
+ HSEStatus = (uint32_t)0x00;
+ }
+
+ if (HSEStatus == (uint32_t)0x01)
+ {
+#if !defined STM32F10X_LD_VL && !defined STM32F10X_MD_VL && !defined STM32F10X_HD_VL
+ /* Enable Prefetch Buffer */
+ FLASH->ACR |= FLASH_ACR_PRFTBE;
+
+ /* Flash 0 wait state */
+ FLASH->ACR &= (uint32_t)((uint32_t)~FLASH_ACR_LATENCY);
+ FLASH->ACR |= (uint32_t)FLASH_ACR_LATENCY_0;
+#endif
+
+ /* HCLK = SYSCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_HPRE_DIV1;
+
+ /* PCLK2 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE2_DIV1;
+
+ /* PCLK1 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE1_DIV1;
+
+#ifdef STM32F10X_CL
+ /* Configure PLLs ------------------------------------------------------*/
+ /* PLL configuration: PLLCLK = PREDIV1 * 6 = 24 MHz */
+ RCC->CFGR &= (uint32_t)~(RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLSRC | RCC_CFGR_PLLMULL);
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLXTPRE_PREDIV1 | RCC_CFGR_PLLSRC_PREDIV1 |
+ RCC_CFGR_PLLMULL6);
+
+ /* PLL2 configuration: PLL2CLK = (HSE / 5) * 8 = 40 MHz */
+ /* PREDIV1 configuration: PREDIV1CLK = PLL2 / 10 = 4 MHz */
+ RCC->CFGR2 &= (uint32_t)~(RCC_CFGR2_PREDIV2 | RCC_CFGR2_PLL2MUL |
+ RCC_CFGR2_PREDIV1 | RCC_CFGR2_PREDIV1SRC);
+ RCC->CFGR2 |= (uint32_t)(RCC_CFGR2_PREDIV2_DIV5 | RCC_CFGR2_PLL2MUL8 |
+ RCC_CFGR2_PREDIV1SRC_PLL2 | RCC_CFGR2_PREDIV1_DIV10);
+
+ /* Enable PLL2 */
+ RCC->CR |= RCC_CR_PLL2ON;
+ /* Wait till PLL2 is ready */
+ while((RCC->CR & RCC_CR_PLL2RDY) == 0)
+ {
+ }
+#elif defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL)
+ /* PLL configuration: = (HSE / 2) * 6 = 24 MHz */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_PLLSRC | RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLMULL));
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLSRC_PREDIV1 | RCC_CFGR_PLLXTPRE_PREDIV1_Div2 | RCC_CFGR_PLLMULL6);
+#else
+ /* PLL configuration: = (HSE / 2) * 6 = 24 MHz */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_PLLSRC | RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLMULL));
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLSRC_HSE | RCC_CFGR_PLLXTPRE_HSE_Div2 | RCC_CFGR_PLLMULL6);
+#endif /* STM32F10X_CL */
+
+ /* Enable PLL */
+ RCC->CR |= RCC_CR_PLLON;
+
+ /* Wait till PLL is ready */
+ while((RCC->CR & RCC_CR_PLLRDY) == 0)
+ {
+ }
+
+ /* Select PLL as system clock source */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_SW));
+ RCC->CFGR |= (uint32_t)RCC_CFGR_SW_PLL;
+
+ /* Wait till PLL is used as system clock source */
+ while ((RCC->CFGR & (uint32_t)RCC_CFGR_SWS) != (uint32_t)0x08)
+ {
+ }
+ }
+ else
+ { /* If HSE fails to start-up, the application will have wrong clock
+ configuration. User can add here some code to deal with this error */
+ }
+}
+#elif defined SYSCLK_FREQ_36MHz
+/**
+ * @brief Sets System clock frequency to 36MHz and configure HCLK, PCLK2
+ * and PCLK1 prescalers.
+ * @note This function should be used only after reset.
+ * @param None
+ * @retval None
+ */
+static void SetSysClockTo36(void)
+{
+ __IO uint32_t StartUpCounter = 0, HSEStatus = 0;
+
+ /* SYSCLK, HCLK, PCLK2 and PCLK1 configuration ---------------------------*/
+ /* Enable HSE */
+ RCC->CR |= ((uint32_t)RCC_CR_HSEON);
+
+ /* Wait till HSE is ready and if Time out is reached exit */
+ do
+ {
+ HSEStatus = RCC->CR & RCC_CR_HSERDY;
+ StartUpCounter++;
+ } while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
+
+ if ((RCC->CR & RCC_CR_HSERDY) != RESET)
+ {
+ HSEStatus = (uint32_t)0x01;
+ }
+ else
+ {
+ HSEStatus = (uint32_t)0x00;
+ }
+
+ if (HSEStatus == (uint32_t)0x01)
+ {
+ /* Enable Prefetch Buffer */
+ FLASH->ACR |= FLASH_ACR_PRFTBE;
+
+ /* Flash 1 wait state */
+ FLASH->ACR &= (uint32_t)((uint32_t)~FLASH_ACR_LATENCY);
+ FLASH->ACR |= (uint32_t)FLASH_ACR_LATENCY_1;
+
+ /* HCLK = SYSCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_HPRE_DIV1;
+
+ /* PCLK2 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE2_DIV1;
+
+ /* PCLK1 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE1_DIV1;
+
+#ifdef STM32F10X_CL
+ /* Configure PLLs ------------------------------------------------------*/
+
+ /* PLL configuration: PLLCLK = PREDIV1 * 9 = 36 MHz */
+ RCC->CFGR &= (uint32_t)~(RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLSRC | RCC_CFGR_PLLMULL);
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLXTPRE_PREDIV1 | RCC_CFGR_PLLSRC_PREDIV1 |
+ RCC_CFGR_PLLMULL9);
+
+ /*!< PLL2 configuration: PLL2CLK = (HSE / 5) * 8 = 40 MHz */
+ /* PREDIV1 configuration: PREDIV1CLK = PLL2 / 10 = 4 MHz */
+
+ RCC->CFGR2 &= (uint32_t)~(RCC_CFGR2_PREDIV2 | RCC_CFGR2_PLL2MUL |
+ RCC_CFGR2_PREDIV1 | RCC_CFGR2_PREDIV1SRC);
+ RCC->CFGR2 |= (uint32_t)(RCC_CFGR2_PREDIV2_DIV5 | RCC_CFGR2_PLL2MUL8 |
+ RCC_CFGR2_PREDIV1SRC_PLL2 | RCC_CFGR2_PREDIV1_DIV10);
+
+ /* Enable PLL2 */
+ RCC->CR |= RCC_CR_PLL2ON;
+ /* Wait till PLL2 is ready */
+ while((RCC->CR & RCC_CR_PLL2RDY) == 0)
+ {
+ }
+
+#else
+ /* PLL configuration: PLLCLK = (HSE / 2) * 9 = 36 MHz */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_PLLSRC | RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLMULL));
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLSRC_HSE | RCC_CFGR_PLLXTPRE_HSE_Div2 | RCC_CFGR_PLLMULL9);
+#endif /* STM32F10X_CL */
+
+ /* Enable PLL */
+ RCC->CR |= RCC_CR_PLLON;
+
+ /* Wait till PLL is ready */
+ while((RCC->CR & RCC_CR_PLLRDY) == 0)
+ {
+ }
+
+ /* Select PLL as system clock source */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_SW));
+ RCC->CFGR |= (uint32_t)RCC_CFGR_SW_PLL;
+
+ /* Wait till PLL is used as system clock source */
+ while ((RCC->CFGR & (uint32_t)RCC_CFGR_SWS) != (uint32_t)0x08)
+ {
+ }
+ }
+ else
+ { /* If HSE fails to start-up, the application will have wrong clock
+ configuration. User can add here some code to deal with this error */
+ }
+}
+#elif defined SYSCLK_FREQ_48MHz
+/**
+ * @brief Sets System clock frequency to 48MHz and configure HCLK, PCLK2
+ * and PCLK1 prescalers.
+ * @note This function should be used only after reset.
+ * @param None
+ * @retval None
+ */
+static void SetSysClockTo48(void)
+{
+ __IO uint32_t StartUpCounter = 0, HSEStatus = 0;
+
+ /* SYSCLK, HCLK, PCLK2 and PCLK1 configuration ---------------------------*/
+ /* Enable HSE */
+ RCC->CR |= ((uint32_t)RCC_CR_HSEON);
+
+ /* Wait till HSE is ready and if Time out is reached exit */
+ do
+ {
+ HSEStatus = RCC->CR & RCC_CR_HSERDY;
+ StartUpCounter++;
+ } while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
+
+ if ((RCC->CR & RCC_CR_HSERDY) != RESET)
+ {
+ HSEStatus = (uint32_t)0x01;
+ }
+ else
+ {
+ HSEStatus = (uint32_t)0x00;
+ }
+
+ if (HSEStatus == (uint32_t)0x01)
+ {
+ /* Enable Prefetch Buffer */
+ FLASH->ACR |= FLASH_ACR_PRFTBE;
+
+ /* Flash 1 wait state */
+ FLASH->ACR &= (uint32_t)((uint32_t)~FLASH_ACR_LATENCY);
+ FLASH->ACR |= (uint32_t)FLASH_ACR_LATENCY_1;
+
+ /* HCLK = SYSCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_HPRE_DIV1;
+
+ /* PCLK2 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE2_DIV1;
+
+ /* PCLK1 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE1_DIV2;
+
+#ifdef STM32F10X_CL
+ /* Configure PLLs ------------------------------------------------------*/
+ /* PLL2 configuration: PLL2CLK = (HSE / 5) * 8 = 40 MHz */
+ /* PREDIV1 configuration: PREDIV1CLK = PLL2 / 5 = 8 MHz */
+
+ RCC->CFGR2 &= (uint32_t)~(RCC_CFGR2_PREDIV2 | RCC_CFGR2_PLL2MUL |
+ RCC_CFGR2_PREDIV1 | RCC_CFGR2_PREDIV1SRC);
+ RCC->CFGR2 |= (uint32_t)(RCC_CFGR2_PREDIV2_DIV5 | RCC_CFGR2_PLL2MUL8 |
+ RCC_CFGR2_PREDIV1SRC_PLL2 | RCC_CFGR2_PREDIV1_DIV5);
+
+ /* Enable PLL2 */
+ RCC->CR |= RCC_CR_PLL2ON;
+ /* Wait till PLL2 is ready */
+ while((RCC->CR & RCC_CR_PLL2RDY) == 0)
+ {
+ }
+
+
+ /* PLL configuration: PLLCLK = PREDIV1 * 6 = 48 MHz */
+ RCC->CFGR &= (uint32_t)~(RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLSRC | RCC_CFGR_PLLMULL);
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLXTPRE_PREDIV1 | RCC_CFGR_PLLSRC_PREDIV1 |
+ RCC_CFGR_PLLMULL6);
+#else
+ /* PLL configuration: PLLCLK = HSE * 6 = 48 MHz */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_PLLSRC | RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLMULL));
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLSRC_HSE | RCC_CFGR_PLLMULL6);
+#endif /* STM32F10X_CL */
+
+ /* Enable PLL */
+ RCC->CR |= RCC_CR_PLLON;
+
+ /* Wait till PLL is ready */
+ while((RCC->CR & RCC_CR_PLLRDY) == 0)
+ {
+ }
+
+ /* Select PLL as system clock source */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_SW));
+ RCC->CFGR |= (uint32_t)RCC_CFGR_SW_PLL;
+
+ /* Wait till PLL is used as system clock source */
+ while ((RCC->CFGR & (uint32_t)RCC_CFGR_SWS) != (uint32_t)0x08)
+ {
+ }
+ }
+ else
+ { /* If HSE fails to start-up, the application will have wrong clock
+ configuration. User can add here some code to deal with this error */
+ }
+}
+
+#elif defined SYSCLK_FREQ_56MHz
+/**
+ * @brief Sets System clock frequency to 56MHz and configure HCLK, PCLK2
+ * and PCLK1 prescalers.
+ * @note This function should be used only after reset.
+ * @param None
+ * @retval None
+ */
+static void SetSysClockTo56(void)
+{
+ __IO uint32_t StartUpCounter = 0, HSEStatus = 0;
+
+ /* SYSCLK, HCLK, PCLK2 and PCLK1 configuration ---------------------------*/
+ /* Enable HSE */
+ RCC->CR |= ((uint32_t)RCC_CR_HSEON);
+
+ /* Wait till HSE is ready and if Time out is reached exit */
+ do
+ {
+ HSEStatus = RCC->CR & RCC_CR_HSERDY;
+ StartUpCounter++;
+ } while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
+
+ if ((RCC->CR & RCC_CR_HSERDY) != RESET)
+ {
+ HSEStatus = (uint32_t)0x01;
+ }
+ else
+ {
+ HSEStatus = (uint32_t)0x00;
+ }
+
+ if (HSEStatus == (uint32_t)0x01)
+ {
+ /* Enable Prefetch Buffer */
+ FLASH->ACR |= FLASH_ACR_PRFTBE;
+
+ /* Flash 2 wait state */
+ FLASH->ACR &= (uint32_t)((uint32_t)~FLASH_ACR_LATENCY);
+ FLASH->ACR |= (uint32_t)FLASH_ACR_LATENCY_2;
+
+ /* HCLK = SYSCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_HPRE_DIV1;
+
+ /* PCLK2 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE2_DIV1;
+
+ /* PCLK1 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE1_DIV2;
+
+#ifdef STM32F10X_CL
+ /* Configure PLLs ------------------------------------------------------*/
+ /* PLL2 configuration: PLL2CLK = (HSE / 5) * 8 = 40 MHz */
+ /* PREDIV1 configuration: PREDIV1CLK = PLL2 / 5 = 8 MHz */
+
+ RCC->CFGR2 &= (uint32_t)~(RCC_CFGR2_PREDIV2 | RCC_CFGR2_PLL2MUL |
+ RCC_CFGR2_PREDIV1 | RCC_CFGR2_PREDIV1SRC);
+ RCC->CFGR2 |= (uint32_t)(RCC_CFGR2_PREDIV2_DIV5 | RCC_CFGR2_PLL2MUL8 |
+ RCC_CFGR2_PREDIV1SRC_PLL2 | RCC_CFGR2_PREDIV1_DIV5);
+
+ /* Enable PLL2 */
+ RCC->CR |= RCC_CR_PLL2ON;
+ /* Wait till PLL2 is ready */
+ while((RCC->CR & RCC_CR_PLL2RDY) == 0)
+ {
+ }
+
+
+ /* PLL configuration: PLLCLK = PREDIV1 * 7 = 56 MHz */
+ RCC->CFGR &= (uint32_t)~(RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLSRC | RCC_CFGR_PLLMULL);
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLXTPRE_PREDIV1 | RCC_CFGR_PLLSRC_PREDIV1 |
+ RCC_CFGR_PLLMULL7);
+#else
+ /* PLL configuration: PLLCLK = HSE * 7 = 56 MHz */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_PLLSRC | RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLMULL));
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLSRC_HSE | RCC_CFGR_PLLMULL7);
+
+#endif /* STM32F10X_CL */
+
+ /* Enable PLL */
+ RCC->CR |= RCC_CR_PLLON;
+
+ /* Wait till PLL is ready */
+ while((RCC->CR & RCC_CR_PLLRDY) == 0)
+ {
+ }
+
+ /* Select PLL as system clock source */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_SW));
+ RCC->CFGR |= (uint32_t)RCC_CFGR_SW_PLL;
+
+ /* Wait till PLL is used as system clock source */
+ while ((RCC->CFGR & (uint32_t)RCC_CFGR_SWS) != (uint32_t)0x08)
+ {
+ }
+ }
+ else
+ { /* If HSE fails to start-up, the application will have wrong clock
+ configuration. User can add here some code to deal with this error */
+ }
+}
+
+#elif defined SYSCLK_FREQ_72MHz
+/**
+ * @brief Sets System clock frequency to 72MHz and configure HCLK, PCLK2
+ * and PCLK1 prescalers.
+ * @note This function should be used only after reset.
+ * @param None
+ * @retval None
+ */
+static void SetSysClockTo72(void)
+{
+ __IO uint32_t StartUpCounter = 0, HSEStatus = 0;
+
+ /* SYSCLK, HCLK, PCLK2 and PCLK1 configuration ---------------------------*/
+ /* Enable HSE */
+ RCC->CR |= ((uint32_t)RCC_CR_HSEON);
+
+ /* Wait till HSE is ready and if Time out is reached exit */
+ do
+ {
+ HSEStatus = RCC->CR & RCC_CR_HSERDY;
+ StartUpCounter++;
+ } while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
+
+ if ((RCC->CR & RCC_CR_HSERDY) != RESET)
+ {
+ HSEStatus = (uint32_t)0x01;
+ }
+ else
+ {
+ HSEStatus = (uint32_t)0x00;
+ }
+
+ if (HSEStatus == (uint32_t)0x01)
+ {
+ /* Enable Prefetch Buffer */
+ FLASH->ACR |= FLASH_ACR_PRFTBE;
+
+ /* Flash 2 wait state */
+ FLASH->ACR &= (uint32_t)((uint32_t)~FLASH_ACR_LATENCY);
+ FLASH->ACR |= (uint32_t)FLASH_ACR_LATENCY_2;
+
+
+ /* HCLK = SYSCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_HPRE_DIV1;
+
+ /* PCLK2 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE2_DIV1;
+
+ /* PCLK1 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE1_DIV2;
+
+#ifdef STM32F10X_CL
+ /* Configure PLLs ------------------------------------------------------*/
+ /* PLL2 configuration: PLL2CLK = (HSE / 5) * 8 = 40 MHz */
+ /* PREDIV1 configuration: PREDIV1CLK = PLL2 / 5 = 8 MHz */
+
+ RCC->CFGR2 &= (uint32_t)~(RCC_CFGR2_PREDIV2 | RCC_CFGR2_PLL2MUL |
+ RCC_CFGR2_PREDIV1 | RCC_CFGR2_PREDIV1SRC);
+ RCC->CFGR2 |= (uint32_t)(RCC_CFGR2_PREDIV2_DIV5 | RCC_CFGR2_PLL2MUL8 |
+ RCC_CFGR2_PREDIV1SRC_PLL2 | RCC_CFGR2_PREDIV1_DIV5);
+
+ /* Enable PLL2 */
+ RCC->CR |= RCC_CR_PLL2ON;
+ /* Wait till PLL2 is ready */
+ while((RCC->CR & RCC_CR_PLL2RDY) == 0)
+ {
+ }
+
+
+ /* PLL configuration: PLLCLK = PREDIV1 * 9 = 72 MHz */
+ RCC->CFGR &= (uint32_t)~(RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLSRC | RCC_CFGR_PLLMULL);
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLXTPRE_PREDIV1 | RCC_CFGR_PLLSRC_PREDIV1 |
+ RCC_CFGR_PLLMULL9);
+#else
+ /* PLL configuration: PLLCLK = HSE * 9 = 72 MHz */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_PLLSRC | RCC_CFGR_PLLXTPRE |
+ RCC_CFGR_PLLMULL));
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLSRC_HSE | RCC_CFGR_PLLMULL9);
+#endif /* STM32F10X_CL */
+
+ /* Enable PLL */
+ RCC->CR |= RCC_CR_PLLON;
+
+ /* Wait till PLL is ready */
+ while((RCC->CR & RCC_CR_PLLRDY) == 0)
+ {
+ }
+
+ /* Select PLL as system clock source */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_SW));
+ RCC->CFGR |= (uint32_t)RCC_CFGR_SW_PLL;
+
+ /* Wait till PLL is used as system clock source */
+ while ((RCC->CFGR & (uint32_t)RCC_CFGR_SWS) != (uint32_t)0x08)
+ {
+ }
+ }
+ else
+ { /* If HSE fails to start-up, the application will have wrong clock
+ configuration. User can add here some code to deal with this error */
+ }
+}
+#endif
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
|
