365 lines
13 KiB
C
365 lines
13 KiB
C
#include "./rcc/bsp_clkconfig.h"
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#include "stm32h7xx_hal_rcc.h"
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/**
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* @brief 系统时钟从ISR上下文切换
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* @retval 无
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*/
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void SwitchSystemClock(void)
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{
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if (__HAL_RCC_GET_PLL_OSCSOURCE() == RCC_PLLSOURCE_HSI)
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{
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/* PLL源是HSI振荡器 */
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/* 将SYSCLK频率设置为480000000Hz，来自由CSI时钟源产生的PLL */
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SystemClockCSI_Config();
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}
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else if (__HAL_RCC_GET_PLL_OSCSOURCE() == RCC_PLLSOURCE_HSE)
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{
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/* PLL源是HSE振荡器 */
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/* 将SYSCLK频率设置为480000000Hz，来自由HSI时钟源产生的PLL */
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SystemClockHSI_Config();
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}
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else if (__HAL_RCC_GET_PLL_OSCSOURCE() == RCC_PLLSOURCE_CSI)
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{
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/* PLL源是CSI振荡器 */
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/* 将SYSCLK频率设置为480000000Hz，来自由HSE时钟源产生的PLL */
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SystemClockHSE_Config();
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}
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}
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/**
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* @brief System Clock 配置
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* system Clock 配置如下:
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* System Clock source = PLL (HSE)
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* SYSCLK(Hz) = 480000000 (CPU Clock)
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* HCLK(Hz) = 240000000 (AXI and AHBs Clock)
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* AHB Prescaler = 2
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* D1 APB3 Prescaler = 2 (APB3 Clock 120MHz)
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* D2 APB1 Prescaler = 2 (APB1 Clock 120MHz)
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* D2 APB2 Prescaler = 2 (APB2 Clock 120MHz)
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* D3 APB4 Prescaler = 2 (APB4 Clock 120MHz)
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* HSE Frequency(Hz) = 25000000
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* PLL_M = 5
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* PLL_N = 192
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* PLL_P = 2
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* PLL_Q = 4
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* PLL_R = 2
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* VDD(V) = 3.3
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* Flash Latency(WS) = 4
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* @param 无
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* @retval 无
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*/
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void SystemClock_Config(void)
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{
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RCC_ClkInitTypeDef RCC_ClkInitStruct;
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RCC_OscInitTypeDef RCC_OscInitStruct;
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HAL_StatusTypeDef ret = HAL_OK;
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/*使能供电配置更新 */
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MODIFY_REG(PWR->CR3, PWR_CR3_SCUEN, 0);
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/* 当器件的时钟频率低于最大系统频率时，电压调节可以优化功耗，
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关于系统频率的电压调节值的更新可以参考产品数据手册。 */
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__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
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while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}
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/* 启用HSE振荡器并使用HSE作为源激活PLL */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.HSIState = RCC_HSI_OFF;
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RCC_OscInitStruct.CSIState = RCC_CSI_OFF;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLM = 5;
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RCC_OscInitStruct.PLL.PLLN = 192;
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RCC_OscInitStruct.PLL.PLLP = 2;
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RCC_OscInitStruct.PLL.PLLR = 2;
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RCC_OscInitStruct.PLL.PLLQ = 4;
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RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
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RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_2;
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ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
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if(ret != HAL_OK)
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{
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while(1) { ; }
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}
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/* 选择PLL作为系统时钟源并配置总线时钟分频器 */
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RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | \
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RCC_CLOCKTYPE_HCLK | \
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RCC_CLOCKTYPE_D1PCLK1 | \
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RCC_CLOCKTYPE_PCLK1 | \
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RCC_CLOCKTYPE_PCLK2 | \
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RCC_CLOCKTYPE_D3PCLK1);
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;
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RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
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RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;
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ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4);
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if(ret != HAL_OK)
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{
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while(1) { ; }
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}
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}
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/**
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* @brief 将PLL源从CSI切换到HSE，并选择PLL作为SYSCLK源
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* system Clock 配置如下:
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* System Clock source = PLL (HSE)
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* SYSCLK(Hz) = 480000000 (CPU Clock)
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* HCLK(Hz) = 240000000 (AXI and AHBs Clock)
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* AHB Prescaler = 2
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* D1 APB3 Prescaler = 2 (APB3 Clock 120MHz)
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* D2 APB1 Prescaler = 2 (APB1 Clock 120MHz)
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* D2 APB2 Prescaler = 2 (APB2 Clock 120MHz)
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* D3 APB4 Prescaler = 2 (APB4 Clock 120MHz)
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* HSE Frequency(Hz) = 25000000
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* PLL_M = 5
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* PLL_N = 192
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* PLL_P = 2
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* PLL_Q = 4
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* PLL_R = 2
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* VDD(V) = 3.3
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* Flash Latency(WS) = 4
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* @param 无
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* @retval 无
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*/
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void SystemClockHSE_Config(void)
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{
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RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
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RCC_OscInitTypeDef RCC_OscInitStruct = {0};
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/* -1- 选择CSI作为系统时钟源以允许修改PLL配置 */
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RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_CSI;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
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{
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while(1) { ; }
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}
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/* -2- 启用HSE振荡器，选择它作为PLL源，最后激活PLL */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLM = 5;
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RCC_OscInitStruct.PLL.PLLN = 192;
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RCC_OscInitStruct.PLL.PLLP = 2;
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RCC_OscInitStruct.PLL.PLLR = 2;
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RCC_OscInitStruct.PLL.PLLQ = 4;
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RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
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RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_2;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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while(1) { ; }
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}
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/* -2-选择PLL作为系统时钟源并配置总线时钟分频器 */
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RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | \
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RCC_CLOCKTYPE_HCLK | \
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RCC_CLOCKTYPE_D1PCLK1 | \
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RCC_CLOCKTYPE_PCLK1 | \
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RCC_CLOCKTYPE_PCLK2 | \
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RCC_CLOCKTYPE_D3PCLK1);
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;
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RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
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RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;
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if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
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{
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while(1) { ; }
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}
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/* -4- 可选：禁用CSI振荡器（如果应用程序不再需要HSI）*/
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_CSI;
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RCC_OscInitStruct.CSIState = RCC_CSI_OFF;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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while(1) { ; }
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}
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}
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/**
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* @brief 将PLL源从HSE切换到HSI，并选择PLL作为SYSCLK源
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* system Clock 配置如下:
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* System Clock source = PLL (HSI)
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* SYSCLK(Hz) = 480000000 (CPU Clock)
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* HCLK(Hz) = 240000000 (AXI and AHBs Clock)
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* AHB Prescaler = 2
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* D1 APB3 Prescaler = 2 (APB3 Clock 120MHz)
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* D2 APB1 Prescaler = 2 (APB1 Clock 120MHz)
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* D2 APB2 Prescaler = 2 (APB2 Clock 120MHz)
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* D3 APB4 Prescaler = 2 (APB4 Clock 120MHz)
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* HSI Frequency(Hz) = 64000000
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* PLL_M = 16
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* PLL_N = 240
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* PLL_P = 2
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* PLL_Q = 4
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* PLL_R = 2
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* VDD(V) = 3.3
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* Flash Latency(WS) = 4
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* @param 无
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* @retval 无
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*/
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void SystemClockHSI_Config(void)
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{
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RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
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RCC_OscInitTypeDef RCC_OscInitStruct = {0};
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/* -1- 选择HSE作为系统时钟源以允许修改PLL配置 */
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RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSE;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
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{
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while(1) { ; }
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}
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/* -2- 启用HSI振荡器，选择它作为PLL源，最后激活PLL */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
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RCC_OscInitStruct.HSIState = RCC_HSI_ON;
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RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
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RCC_OscInitStruct.PLL.PLLM = 16;
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RCC_OscInitStruct.PLL.PLLN = 240;
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RCC_OscInitStruct.PLL.PLLP = 2;
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RCC_OscInitStruct.PLL.PLLR = 2;
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RCC_OscInitStruct.PLL.PLLQ = 4;
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RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
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RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_2;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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while(1) { ; }
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}
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/* -3-选择PLL作为系统时钟源并配置总线时钟分频器 */
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RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | \
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RCC_CLOCKTYPE_HCLK | \
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RCC_CLOCKTYPE_D1PCLK1 | \
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RCC_CLOCKTYPE_PCLK1 | \
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RCC_CLOCKTYPE_PCLK2 | \
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RCC_CLOCKTYPE_D3PCLK1);
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;
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RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
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RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;
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if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
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{
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while(1) { ; }
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}
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/* -4- 可选：禁用HSE振荡器（如果应用程序不再需要HSE） */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_OFF;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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while(1) { ; }
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}
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}
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/**
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* @brief 将PLL源从HSI切换到CSI，并选择PLL作为SYSCLK源
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* system Clock 配置如下:
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* System Clock source = PLL (CSI)
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* SYSCLK(Hz) = 480000000 (CPU Clock)
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* HCLK(Hz) = 240000000 (AXI and AHBs Clock)
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* AHB Prescaler = 2
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* D1 APB3 Prescaler = 2 (APB3 Clock 120MHz)
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* D2 APB1 Prescaler = 2 (APB1 Clock 120MHz)
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* D2 APB2 Prescaler = 2 (APB2 Clock 120MHz)
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* D3 APB4 Prescaler = 2 (APB4 Clock 120MHz)
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* CSI Frequency(Hz) = 4000000
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* PLL_M = 1
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* PLL_N = 240
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* PLL_P = 2
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* PLL_Q = 4
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* PLL_R = 2
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* VDD(V) = 3.3
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* Flash Latency(WS) = 4
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* @param 无
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* @retval 无
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*/
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void SystemClockCSI_Config(void)
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{
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RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
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RCC_OscInitTypeDef RCC_OscInitStruct = {0};
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/* -1- 选择HSI作为系统时钟源以允许修改PLL配置 */
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RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
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{
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while(1) { ; }
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}
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/* -2- 启用CSI振荡器，选择它作为PLL源，最后激活PLL */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_CSI;
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RCC_OscInitStruct.CSIState = RCC_CSI_ON;
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RCC_OscInitStruct.CSICalibrationValue = RCC_CSICALIBRATION_DEFAULT;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_CSI;
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RCC_OscInitStruct.PLL.PLLM = 1;
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RCC_OscInitStruct.PLL.PLLN = 240;
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RCC_OscInitStruct.PLL.PLLP = 2;
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RCC_OscInitStruct.PLL.PLLR = 2;
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RCC_OscInitStruct.PLL.PLLQ = 4;
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RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
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RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_2;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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while(1) { ; }
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}
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/* -3-选择PLL作为系统时钟源并配置总线时钟分频器 */
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RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | \
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RCC_CLOCKTYPE_HCLK | \
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RCC_CLOCKTYPE_D1PCLK1 | \
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RCC_CLOCKTYPE_PCLK1 | \
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RCC_CLOCKTYPE_PCLK2 | \
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RCC_CLOCKTYPE_D3PCLK1);
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;
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RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
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RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;
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if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
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{
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while(1) { ; }
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}
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/* -4- 可选：禁用HSI振荡器（如果应用程序不再需要HSI） */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
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RCC_OscInitStruct.HSEState = RCC_HSI_OFF;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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while(1) { ; }
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}
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}
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