161 lines
3.9 KiB
C
161 lines
3.9 KiB
C
/*
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* Copyright (c) 2006-2018, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2009-01-05 Bernard first implementation
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* 2013-11-15 bright add RCC initial and print RCC freq function
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#ifdef RT_USING_FINSH
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#include <finsh.h>
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#endif
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#include "board.h"
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#include "usart.h"
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/**
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* @addtogroup STM32
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*/
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/*@{*/
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/*******************************************************************************
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* Function Name : NVIC_Configuration
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* Description : Configures Vector Table base location.
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* Input : None
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* Output : None
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* Return : None
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*******************************************************************************/
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void NVIC_Configuration(void)
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{
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// NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
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}
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/**
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* This RCC initial for system.
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* use HSE clock source
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* HSE = 20MHZ; sysclk = 20MHZ
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* sysclk source is HSE
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* AHB prescaler is 1, HCLK = SYSCKL = SystemCoreClock = 20MHZ
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*/
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static void RCC_Configuration(void)
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{
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RCC_ClkInitTypeDef ClkInit = {0};
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RCC_OscInitTypeDef OscInit = {0};
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HAL_RCC_DeInit();
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/* Enable HSI Oscillator and Activate PLL with HSI as source */
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OscInit.OscillatorType = RCC_OSCILLATORTYPE_HSI;
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OscInit.HSIState = RCC_HSI_ON;
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OscInit.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
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OscInit.PLL.PLLState = RCC_PLL_ON;
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OscInit.PLL.PLLDIV = RCC_PLLDIV_2;
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OscInit.PLL.PLLMUL = RCC_PLLMUL_4;
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OscInit.PLL.PLLSource = RCC_PLLSOURCE_HSI;
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if (HAL_RCC_OscConfig(&OscInit) != HAL_OK)
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{
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RT_ASSERT(RT_NULL);
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}
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/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
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clocks dividers */
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ClkInit.ClockType = RCC_CLOCKTYPE_SYSCLK |
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RCC_CLOCKTYPE_HCLK |
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RCC_CLOCKTYPE_PCLK1 |
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RCC_CLOCKTYPE_PCLK2;
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ClkInit.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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ClkInit.AHBCLKDivider = RCC_SYSCLK_DIV1;
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ClkInit.APB1CLKDivider = RCC_HCLK_DIV1;
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ClkInit.APB2CLKDivider = RCC_HCLK_DIV1;
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if (HAL_RCC_ClockConfig(&ClkInit, FLASH_LATENCY_1) != HAL_OK)
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{
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RT_ASSERT(RT_NULL);
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}
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}
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#ifdef PRINT_RCC_FREQ_INFO
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/**
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* print RCC freq information
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*
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* for example:
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*
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* SYSCLK_Frequency is 48000000HZ
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* PCLK_Frequency is 48000000HZ
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* HCLK_Frequency is 48000000HZ
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* CECCLK_Frequency is 32786HZ
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* ADCCLK_Frequency is 14000000HZ
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* USART1CLK_Frequency is 48000000HZ
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* I2C1CLK_Frequency is 8000000HZ
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* SystemCoreClock is 48000000HZ
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*
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*/
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void print_rcc_freq_info(void)
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{
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rt_uint32_t clkval;
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clkval = HAL_RCC_GetSysClockFreq();//sysclk
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rt_kprintf("\nSYSCLK_Frequency is %dHZ", clkval);
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clkval = HAL_RCC_GetHCLKFreq(); //Hclk
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rt_kprintf("\nHCLK_Frequency is %dHZ", clkval);
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clkval = HAL_RCC_GetPCLK1Freq(); //pclk1
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rt_kprintf("\nPCLK1_Frequency is %dHZ", clkval);
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clkval = HAL_RCC_GetPCLK2Freq(); //pclk2
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rt_kprintf("\nPCLK2_Frequency is %dHZ", clkval);
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}
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#endif
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/**
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* This is the timer interrupt service routine.
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*
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*/
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void SysTick_Handler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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rt_tick_increase();
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/* leave interrupt */
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rt_interrupt_leave();
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}
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/**
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* This function will initial STM32 board.
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*/
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void rt_hw_board_init()
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{
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/* NVIC Configuration */
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NVIC_Configuration();
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/* Configure the SysTick */
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RCC_Configuration();
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SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);
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/* Call components board initial (use INIT_BOARD_EXPORT()) */
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#ifdef RT_USING_COMPONENTS_INIT
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rt_components_board_init();
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#endif
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#ifdef RT_USING_CONSOLE
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rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
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#endif
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/* Print RCC freq info */
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#ifdef PRINT_RCC_FREQ_INFO
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print_rcc_freq_info();
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#endif
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}
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long cmd_reset(int argc, char** argv)
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{
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HAL_NVIC_SystemReset();
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return 0;
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}
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FINSH_FUNCTION_EXPORT_ALIAS(cmd_reset, __cmd_reset, Reset Board);
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/*@}*/
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