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