345 lines
9.7 KiB
C
345 lines
9.7 KiB
C
/** ##########################################################################
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** Filename :
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** Project :
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** Module :
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** Processor :
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** Version :
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** Compiler :
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** Date/Time :
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** Abstract :
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** Contents :
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** Note :
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**
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** (c) Copyright dmdz Co.,Ltd
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** --------------------------------------------------------------------------
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** R E V I S I O N H I S T O R Y
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** --------------------------------------------------------------------------
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** Date Ver Author Description
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** -20230602- --V1.0-- --mingyea--- --修改--
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** #########################################################################*/
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/*---------------------------------------------------------------------------
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- I N C L U D E F I L E S
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----------------------------------------------------------------------------*/
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#include "clk.h"
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#include "mf_config.h"
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#include "nvic.h"
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/*---------------------------------------------------------------------------
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- D E F I N E S / M A C R O S
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----------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------
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- T Y P E D E F I N I T I O N S
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----------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------
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- S T A T I C V A R I A B L E S
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----------------------------------------------------------------------------*/
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//static clk_work_mode_e g_clk_work_mode;
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static clk_clocks_freq_s g_clk_info;
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/*---------------------------------------------------------------------------
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* G L O B A L V A R I A B L E S
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----------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------
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- C O N S T A N T S
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----------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------
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- F U N C T I O N P R O T O T Y P E
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----------------------------------------------------------------------------*/
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extern void SystemInit_hsi(void);
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/*---------------------------------------------------------------------------
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|Prototype :
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|Called by :
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|Preconditions :
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|Input parameters :
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|Output parameters :
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|Return value :
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|Description :初始化
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----------------------------------------------------------------------------*/
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void clk_init(void)
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{
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FL_Init();
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MF_Clock_Init();
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#ifdef CLK_HSE_EN
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/* XTHF 8M倍频至48M */
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SelXTHFToPLL(FL_CMU_PLL_PSC_DIV8, 48 - 1);
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#else
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SystemInit_hsi();
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#endif
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FL_CMU_RCLP_Enable(); //其实默认己开
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//SystemCoreClockUpdate();
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}
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/*---------------------------------------------------------------------------
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|Prototype :
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|Called by :
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|Preconditions :
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|Input parameters :
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|Output parameters :
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|Return value :
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|Description :
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----------------------------------------------------------------------------*/
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void SystemDeInit (void)
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{
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#if 0
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CKGEN_SetSysclkSrc(SYSCLK_SRC_INTERNAL_OSC); ///<set internal 8M RC as sysclk first
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SPM_EnablePLL(DISABLE); ///<Disable PLL next
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SPM_EnableXOSC(DISABLE); ///<Disable XOSC final
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CKGEN_SetPLLReference(PLL_REF_INTERAL_OSC);
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//SPM_EnableLVD(DISABLE); //disable LVD if need
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#endif
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}
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/*---------------------------------------------------------------------------
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|Prototype :
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|Called by :
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|Preconditions :
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|Input parameters : Source 锁相环输入参考时钟选择
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PLL_REFPSC:
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@arg @ref FL_CMU_PLL_CLK_SOURCE_RCHF
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* @arg @ref FL_CMU_PLL_CLK_SOURCE_XTHF
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* PLL_DB : FL_CMU_PLL_PSC_DIV1
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* PLL_OSEL:FL_CMU_PLL_OUTPUT_X1
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|Output parameters :
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|Return value :
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|Description :
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----------------------------------------------------------------------------*/
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void CMU_PLL_ConfigDomain_SYSTEM(uint32_t Source, uint32_t PLL_REFPSC, uint32_t PLL_DB, uint32_t PLL_OSEL)
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{
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MODIFY_REG(CMU->PLLCR, CMU_PLLCR_DB_Msk | CMU_PLLCR_REFPRSC_Msk | CMU_PLLCR_OSEL_Msk | CMU_PLLCR_INSEL_Msk,
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(PLL_DB << CMU_PLLCR_DB_Pos) | PLL_REFPSC | PLL_OSEL | Source);
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}
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/*---------------------------------------------------------------------------
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|Prototype :
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|Called by :
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|Preconditions :
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|Input parameters : RCHF振荡频率值
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|Output parameters :
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|Return value :
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|Description : RCHF初始化配置
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----------------------------------------------------------------------------*/
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void RCHFInit(uint32_t clock)
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{
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switch(clock)
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{
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case FL_CMU_RCHF_FREQUENCY_8MHZ:
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FL_CMU_RCHF_WriteTrimValue(RCHF8M_TRIM);
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break;
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case FL_CMU_RCHF_FREQUENCY_16MHZ:
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FL_CMU_RCHF_WriteTrimValue(RCHF16M_TRIM);
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break;
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case FL_CMU_RCHF_FREQUENCY_24MHZ:
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FL_CMU_RCHF_WriteTrimValue(RCHF24M_TRIM);
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break;
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case FL_CMU_RCHF_FREQUENCY_32MHZ:
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FL_CMU_RCHF_WriteTrimValue(RCHF32M_TRIM);
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break;
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default:
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FL_CMU_RCHF_WriteTrimValue(RCHF8M_TRIM);
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break;
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}
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FL_CMU_RCHF_SetFrequency(clock);
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}
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/*---------------------------------------------------------------------------
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|Prototype :
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|Called by :
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|Preconditions :
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|Input parameters : rchf FL_CMU_RCHF_FREQUENCY_8MHZ
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clock PLL倍频输出频率
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|Output parameters :
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|Return value :
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|Description : RCHF初始化配置
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----------------------------------------------------------------------------*/
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void SelRCHFToPLL(uint32_t rchf, uint32_t clock)
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{
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FL_NVIC_ConfigTypeDef InterruptConfigStruct;
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uint32_t counter = 0;
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uint32_t readystatus = 0;
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uint32_t div = FL_CMU_PLL_PSC_DIV8;
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if(clock > 63) { return; }
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RCHFInit(rchf);
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FL_CMU_ClearFlag_SYSCLKSELError(); //清除时钟选择错误标志
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FL_CMU_EnableIT_SYSCLKSELError(); //使能时钟选择错误中断
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InterruptConfigStruct.preemptPriority = NVIC_PRIORITY_CLK;
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FL_NVIC_Init(&InterruptConfigStruct, FDET_IRQn); //系统时钟选择错误中断
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switch(rchf)
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{
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case FL_CMU_RCHF_FREQUENCY_16MHZ:
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div = FL_CMU_PLL_PSC_DIV16;
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break;
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case FL_CMU_RCHF_FREQUENCY_24MHZ:
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div = FL_CMU_PLL_PSC_DIV24;
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break;
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case FL_CMU_RCHF_FREQUENCY_32MHZ:
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div = FL_CMU_PLL_PSC_DIV32;
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break;
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default:
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break;
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}
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if(clock <= 23)
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{
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FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_0CYCLE);
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}
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else
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if((clock > 23) && (clock <= 47))
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{
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FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_1CYCLE);
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}
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else
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{
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FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_2CYCLE);
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}
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CMU_PLL_ConfigDomain_SYSTEM(FL_CMU_PLL_CLK_SOURCE_RCHF, div, clock, FL_CMU_PLL_OUTPUT_X1);
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FL_CMU_PLL_Enable();
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do
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{
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readystatus = FL_CMU_IsActiveFlag_PLLReady();
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counter++;
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} while((readystatus != 0x1U) && (counter != PLL_TIMEOUT));
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FL_CDIF_SetPrescaler(CDIF, FL_CDIF_PSC_DIV8); //CDIF接口访问的最高频率建议不超过8M
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FL_CMU_SetSystemClockSource(FL_CMU_SYSTEM_CLK_SOURCE_PLL); //系统时钟源选择PLL
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FL_CMU_SetAHBPrescaler(FL_CMU_AHBCLK_PSC_DIV1);
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FL_CMU_SetAPBPrescaler(FL_CMU_APBCLK_PSC_DIV1);
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SystemCoreClockUpdate();
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}
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/*---------------------------------------------------------------------------
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|Prototype :
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|Called by :
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|Preconditions :
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|Input parameters :
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|Output parameters :
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|Return value :
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|Description : XTHF初始化配置
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----------------------------------------------------------------------------*/
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void XTHFInit(void)
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{
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FL_GPIO_InitTypeDef GPIO_InitStruct = {0};
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FL_NVIC_ConfigTypeDef InterruptConfigStruct;
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//PC2.3配置成模拟功能，外接XTHF
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GPIO_InitStruct.pin = FL_GPIO_PIN_2 | FL_GPIO_PIN_3;
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GPIO_InitStruct.mode = FL_GPIO_MODE_ANALOG;
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GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL;
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GPIO_InitStruct.pull = FL_DISABLE;
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GPIO_InitStruct.remapPin = FL_DISABLE;
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GPIO_InitStruct.analogSwitch = FL_DISABLE;
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(void)FL_GPIO_Init(GPIOC, &GPIO_InitStruct);
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//使能XTHF
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FL_CMU_XTHF_Enable();
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FL_CMU_XTHF_WriteDriverStrength(0x02); //振荡强度---05 可能合适 10PF，
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FL_DelayMs(2);
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#if 1 //晶振停振检测，要开启
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FL_CMU_ClearFlag_XTHFFail();
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FL_CMU_EnableIT_XTHFFail(); //开启XTHF停振检测中断
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InterruptConfigStruct.preemptPriority = NVIC_PRIORITY_CLK;
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FL_NVIC_Init(&InterruptConfigStruct, FDET_IRQn);
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#endif
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SystemCoreClockUpdate();
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}
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/*---------------------------------------------------------------------------
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|Prototype :
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|Called by :
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|Preconditions :
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|Input parameters : div 对XTHF参考时钟的分频，目标分频到1M; clock PLL倍频输出频率
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|Output parameters :
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|Return value :
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|Description : 选择外部XTHF作为锁相环的参考时钟
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----------------------------------------------------------------------------*/
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void SelXTHFToPLL(uint32_t div, uint32_t clock)
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{
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FL_NVIC_ConfigTypeDef InterruptConfigStruct;
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uint32_t counter = 0;
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uint32_t readystatus = 0;
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if(clock > 63) { return; }
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XTHFInit();
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FL_CMU_ClearFlag_SYSCLKSELError(); //清除时钟选择错误标志
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FL_CMU_EnableIT_SYSCLKSELError(); //使能时钟选择错误中断
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InterruptConfigStruct.preemptPriority = 0x00;
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FL_NVIC_Init(&InterruptConfigStruct, FDET_IRQn); //系统时钟选择错误中断
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if(clock <= 23)
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{
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FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_0CYCLE);
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}
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else
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if((clock > 23) && (clock <= 47))
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{
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FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_1CYCLE);
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}
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else
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{
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FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_2CYCLE);
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}
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CMU_PLL_ConfigDomain_SYSTEM(FL_CMU_PLL_CLK_SOURCE_XTHF, div, clock, FL_CMU_PLL_OUTPUT_X1);
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FL_CMU_PLL_Enable();
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do
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{
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readystatus = FL_CMU_IsActiveFlag_PLLReady();
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counter++;
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} while((readystatus != 0x1U) && (counter != PLL_TIMEOUT));
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FL_CDIF_SetPrescaler(CDIF, FL_CDIF_PSC_DIV8); //CDIF接口访问的最高频率建议不超过8M
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FL_CMU_SetSystemClockSource(FL_CMU_SYSTEM_CLK_SOURCE_PLL);
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FL_CMU_SetAHBPrescaler(FL_CMU_AHBCLK_PSC_DIV1);
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FL_CMU_SetAPBPrescaler(FL_CMU_APBCLK_PSC_DIV1);
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SystemCoreClockUpdate();
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}
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