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rt-thread-official/bsp/wch/arm/ch579m/libraries/StdPeriphDriver/CH57x_clk.c

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/********************************** (C) COPYRIGHT *******************************
* File Name : CH57x_clk.c
* Author : WCH
* Version : V1.0
* Date : 2018/12/15
* Description
*******************************************************************************/
#include "CH57x_common.h"
/*******************************************************************************
* Function Name : SystemInit
* Description : 系统时钟默认初始化
* Input : None
* Return : None
*******************************************************************************/
void SystemInit(void)
{
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R16_CLK_SYS_CFG = (2<<6)|0x08; // 32M -> Fsys
*((PUINT16V)0x40001048) |= 4;
R8_SAFE_ACCESS_SIG = 0;
mDelayuS(10);
/* 开启电压监控 */
PowerMonitor( ENABLE );
}
/*******************************************************************************
* Function Name : SetSysClock
* Description : 重设系统运行时钟
* Input : sc: 系统时钟源选择
refer to SYS_CLKTypeDef
* Return : None
*******************************************************************************/
void SetSysClock( SYS_CLKTypeDef sc)
{
switch( sc )
{
case CLK_SOURCE_LSI:
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R8_CK32K_CONFIG &= ~RB_CLK_OSC32K_XT;
R16_CLK_SYS_CFG = (3<<6)|0x08;
break;
case CLK_SOURCE_LSE:
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R8_CK32K_CONFIG |= RB_CLK_OSC32K_XT;
R16_CLK_SYS_CFG = (3<<6)|0x08;
break;
case CLK_SOURCE_HSE_32MHz:
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R16_CLK_SYS_CFG = RB_CLK_OSC32M_XT|(2<<6)|0x08;
break;
case CLK_SOURCE_HSE_16MHz:
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R16_CLK_SYS_CFG = RB_CLK_OSC32M_XT|(0<<6)|0x02;
break;
case CLK_SOURCE_HSE_8MHz:
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R16_CLK_SYS_CFG = RB_CLK_OSC32M_XT|(0<<6)|0x04;
break;
case CLK_SOURCE_HSI_32MHz:
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R16_CLK_SYS_CFG = (2<<6)|0x08;
break;
case CLK_SOURCE_HSI_16MHz:
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R16_CLK_SYS_CFG = (0<<6)|0x02;
break;
case CLK_SOURCE_HSI_8MHz:
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R16_CLK_SYS_CFG = (0<<6)|0x04;
break;
case CLK_SOURCE_PLL_40MHz:
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R16_CLK_SYS_CFG = RB_CLK_OSC32M_XT|(1<<6)|12;
break;
case CLK_SOURCE_PLL_32MHz:
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R16_CLK_SYS_CFG = RB_CLK_OSC32M_XT|(1<<6)|15;
break;
case CLK_SOURCE_PLL_24MHz:
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R16_CLK_SYS_CFG = RB_CLK_OSC32M_XT|(1<<6)|20;
break;
case CLK_SOURCE_PLL_20MHz:
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R16_CLK_SYS_CFG = RB_CLK_OSC32M_XT|(1<<6)|24;
break;
case CLK_SOURCE_PLL_16MHz:
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R16_CLK_SYS_CFG = RB_CLK_OSC32M_XT|(1<<6)|30;
break;
default :
break;
}
R8_SAFE_ACCESS_SIG = 0;
}
/*******************************************************************************
* Function Name : GetSysClock
* Description : 获取当前系统时钟
* Input : None
* Return : Hz
*******************************************************************************/
UINT32 GetSysClock( void )
{
UINT16 rev;
rev = R16_CLK_SYS_CFG & 0xff;
if( (rev & RB_CLK_SYS_MOD) == (2<<6) ){ // 32M做主频
return (32000000);
}
else if( (rev & RB_CLK_SYS_MOD) == (1<<6) ){ // PLL进行分频
return (480000000/(rev&0x1f));
}
else if( (rev & RB_CLK_SYS_MOD) == (0<<6) ){ // 32M进行分频
return (32000000/(rev&0x1f));
}
else { // 32K做主频
return (32000);
}
}
/*******************************************************************************
* Function Name : HClk32M_Select
* Description : 32M 高频时钟来源
* Input : hc:
Clk32M_HSI - 选择内部32M
Clk32M_HSE - 选择外部32M
* Return : None
*******************************************************************************/
void HClk32M_Select( HClk32MTypeDef hc)
{
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
if( hc == Clk32M_HSI)
R16_CLK_SYS_CFG &= ~RB_CLK_OSC32M_XT;
else
R16_CLK_SYS_CFG |= RB_CLK_OSC32M_XT;
R8_SAFE_ACCESS_SIG = 0;
}
/*******************************************************************************
* Function Name : LClk32K_Select
* Description : 32K 低频时钟来源
* Input : hc:
Clk32K_LSI - 选择内部32K
Clk32K_LSE - 选择外部32K
* Return : None
*******************************************************************************/
void LClk32K_Select( LClk32KTypeDef hc)
{
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
if( hc == Clk32K_LSI)
R8_CK32K_CONFIG &= ~RB_CLK_OSC32K_XT;
else
R8_CK32K_CONFIG |= RB_CLK_OSC32K_XT;
R8_SAFE_ACCESS_SIG = 0;
}
/*******************************************************************************
* Function Name : HSECFG_Current
* Description : HSE晶体 偏置电流配置
* Input : c: 75%,100%,125%,150%
* Return : None
*******************************************************************************/
void HSECFG_Current( HSECurrentTypeDef c )
{
UINT8 x32M_c;
x32M_c = R8_XT32M_TUNE;
x32M_c = (x32M_c&0xfc)|(c&0x03);
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R8_XT32M_TUNE = x32M_c;
R8_SAFE_ACCESS_SIG = 0;
}
/*******************************************************************************
* Function Name : HSECFG_Capacitance
* Description : HSE晶体 负载电容配置
* Input : c: refer to HSECapTypeDef
* Return : None
*******************************************************************************/
void HSECFG_Capacitance( HSECapTypeDef c )
{
UINT8 x32M_c;
x32M_c = R8_XT32M_TUNE;
x32M_c = (x32M_c&0x8f)|(c<<4);
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R8_XT32M_TUNE = x32M_c;
R8_SAFE_ACCESS_SIG = 0;
}
/*******************************************************************************
* Function Name : LSECFG_Current
* Description : LSE晶体 偏置电流配置
* Input : c: 70%,100%,140%,200%
* Return : None
*******************************************************************************/
void LSECFG_Current( LSECurrentTypeDef c )
{
UINT8 x32K_c;
x32K_c = R8_XT32K_TUNE;
x32K_c = (x32K_c&0xfc)|(c&0x03);
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R8_XT32K_TUNE = x32K_c;
R8_SAFE_ACCESS_SIG = 0;
}
/*******************************************************************************
* Function Name : LSECFG_Capacitance
* Description : LSE晶体 负载电容配置
* Input : c: refer to LSECapTypeDef
* Return : None
*******************************************************************************/
void LSECFG_Capacitance( LSECapTypeDef c )
{
UINT8 x32K_c;
x32K_c = R8_XT32K_TUNE;
x32K_c = (x32K_c&0x0f)|(c<<4);
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R8_XT32K_TUNE = x32K_c;
R8_SAFE_ACCESS_SIG = 0;
}
/*******************************************************************************
* Function Name : Calibration_LSI
* Description : 校准内部32K时钟
* Input : None
* Return : 误差：千分之（单位）
*******************************************************************************/
// 0-26030Hz 1023-44220Hz
UINT16 Calibration_LSI( void )
{
UINT16 rev, basev;
UINT32 calv;
UINT16 i;
UINT16 loc, loc_t;
signed short CNT_STEP_K;
signed short diff_1, diff_2, diffc;
UINT8 k=0;
/* 根据当前时钟获取标称值和斜率（T-step） */
rev = R16_CLK_SYS_CFG & 0xff;
// CNT_STEP_K=Fsys*5*(1/26030 - 1/44220)/1023;
if( (rev & RB_CLK_SYS_MOD) == (2<<6) ){ // 32M做主频
calv = ((5*32000000+(CAB_LSIFQ>>1))/CAB_LSIFQ);
CNT_STEP_K = -3;
}
else if( (rev & RB_CLK_SYS_MOD) == (1<<6) ){ // PLL进行分频
calv = (((UINT32)5*480000000/(rev&0x1f)+(CAB_LSIFQ>>1))/CAB_LSIFQ);
CNT_STEP_K =( -37-((rev&0x1f)-1))/(rev&0x1f);
}
else if( (rev & RB_CLK_SYS_MOD) == (0<<6) ){ // 32M进行分频
calv = ((5*32000000/(rev&0x1f)+(CAB_LSIFQ>>1))/CAB_LSIFQ);
CNT_STEP_K = ( -3-((rev&0x1f)-1))/(rev&0x1f);
}
else { // 32K做主频
calv = (5);
CNT_STEP_K = 0;
}
/* 校准 */
basev = ( calv &0xfff ); // 获取校准标称值
// loc = 1023*(f-26030)/f/((44220-26030)/44220) 经验曲线
loc = R16_INT32K_TUNE;
diff_2 = 0;
diffc = 0;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R8_OSC_CAL_CTRL = RB_OSC_CNT_EN;
do
{
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R16_INT32K_TUNE = loc;
R8_SAFE_ACCESS_SIG = 0;
/* 读取当前值 */
while(!(R8_OSC_CAL_CTRL&RB_OSC_CNT_HALT));
i = R16_OSC_CAL_CNT; // 用于丢弃
while(R8_OSC_CAL_CTRL&RB_OSC_CNT_HALT);
while(!(R8_OSC_CAL_CTRL&RB_OSC_CNT_HALT));
i = R16_OSC_CAL_CNT; // 实时校准后采样值
k++;
diff_1 = i-basev;
if( diff_1 == 0 ){
return 0; // 校准正好
}
else if((diff_1*diff_2)<0){ // 处于两点之间
if((diffc == 1) || (diffc == -1) || (diffc == 0))
{
// 都变成正数
if( diff_2<0 ) diff_2 = ~(diff_2-1);
else diff_1 = ~(diff_1-1);
if(diff_1>diff_2){
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R16_INT32K_TUNE = loc_t;
R8_SAFE_ACCESS_SIG = 0;
return (diff_2*1000/basev); // 返回误差值，千分之
}
else return(diff_1*1000/basev);
}
}
// 保存上一次值
diff_2 = diff_1;
loc_t = loc;
diffc = diff_1/CNT_STEP_K;
loc = loc - diffc;
if( loc == loc_t )
{
if( diff_1 > 0 ) loc = loc+1; // 当前频率偏小
else loc = loc-1; // 当前频率偏大
}
}while( k<20 );
return(0xff);
}
/*******************************************************************************
* Function Name : RTCInitTime
* Description : RTC时钟初始化当前时间
* Input : y: 配置时间 - 年
MAX_Y = BEGYEAR + 44
mon: 配置时间 - 月
MAX_MON = 12
d: 配置时间 - 日
MAX_D = 31
h: 配置时间 - 小时
MAX_H = 23
m: 配置时间 - 分钟
MAX_M = 59
s: 配置时间 - 秒
MAX_S = 59
* Return : None
*******************************************************************************/
void RTC_InitTime( UINT16 y, UINT16 mon, UINT16 d, UINT16 h, UINT16 m, UINT16 s )
{
UINT32 t;
UINT16 year, month, day, sec2, t32k;
UINT8V clk_pin;
year = y;
month = mon;
day = 0;
while ( year > BEGYEAR )
{
day += YearLength( year-1 );
year--;
}
while ( month > 1 )
{
day += monthLength( IsLeapYear( y ), month-2 );
month--;
}
day += d-1;
sec2 = (h%24)*1800+m*30+s/2;
t32k = (s&1)?(0x8000):(0);
t = sec2;
t = t<<16 | t32k;
do{
clk_pin = (R8_CK32K_CONFIG&RB_32K_CLK_PIN);
}while( (clk_pin != (R8_CK32K_CONFIG&RB_32K_CLK_PIN)) || (!clk_pin) );
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R32_RTC_TRIG = day;
R8_RTC_MODE_CTRL |= RB_RTC_LOAD_HI;
R32_RTC_TRIG = t;
R8_RTC_MODE_CTRL |= RB_RTC_LOAD_LO;
R8_SAFE_ACCESS_SIG = 0;
}
/*******************************************************************************
* Function Name : RTC_GetTime
* Description : 获取当前时间
* Input : y: 获取到的时间 - 年
MAX_Y = BEGYEAR + 44
mon: 获取到的时间 - 月
MAX_MON = 12
d: 获取到的时间 - 日
MAX_D = 31
ph: 获取到的时间 - 小时
MAX_H = 23
pm: 获取到的时间 - 分钟
MAX_M = 59
ps: 获取到的时间 - 秒
MAX_S = 59
* Return : None
*******************************************************************************/
void RTC_GetTime( PUINT16 py, PUINT16 pmon, PUINT16 pd, PUINT16 ph, PUINT16 pm, PUINT16 ps )
{
UINT32 t;
UINT16 day, sec2, t32k;
day = R32_RTC_CNT_DAY & 0x3FFF;
sec2 = R16_RTC_CNT_2S;
t32k = R16_RTC_CNT_32K;
t = sec2*2 + ((t32k<0x8000)?0:1);
*py = BEGYEAR;
while ( day >= YearLength( *py ) )
{
day -= YearLength( *py );
(*py)++;
}
*pmon = 0;
while ( day >= monthLength( IsLeapYear( *py ), *pmon ) )
{
day -= monthLength( IsLeapYear( *py ), *pmon );
(*pmon)++;
}
(*pmon) ++;
*pd = day+1;
*ph = t/3600;
*pm = t%3600/60;
*ps = t%60;
}
/*******************************************************************************
* Function Name : RTC_SetCycle32k
* Description : 基于LSE/LSI时钟，配置当前RTC 周期数
* Input : cyc: 配置周期计数初值 - cycle
MAX_CYC = 0xA8BFFFFF = 2831155199
* Return : None
*******************************************************************************/
void RTC_SetCycle32k( UINT32 cyc )
{
UINT8V clk_pin;
do{
clk_pin = (R8_CK32K_CONFIG&RB_32K_CLK_PIN);
}while( (clk_pin != (R8_CK32K_CONFIG&RB_32K_CLK_PIN)) || (!clk_pin) );
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R32_RTC_TRIG = cyc;
R8_RTC_MODE_CTRL |= RB_RTC_LOAD_LO;
R8_SAFE_ACCESS_SIG = 0;
}
/*******************************************************************************
* Function Name : RTC_GetCycle32k
* Description : 基于LSE/LSI时钟，获取当前RTC 周期数
* Input : None
* Return : 返回当前周期数，MAX_CYC = 0xA8BFFFFF = 2831155199
*******************************************************************************/
UINT32 RTC_GetCycle32k( void )
{
UINT32 i;
do{
i = R32_RTC_CNT_32K;
}while( i != R32_RTC_CNT_32K );
return (i);
}
/*******************************************************************************
* Function Name : RTC_TMRFunCfg
* Description : RTC定时模式配置
* Input : t:
refer to RTC_TMRCycTypeDef
* Return : None
*******************************************************************************/
void RTC_TMRFunCfg( RTC_TMRCycTypeDef t )
{
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R8_RTC_MODE_CTRL &= ~(RB_RTC_TMR_EN|RB_RTC_TMR_MODE);
R8_RTC_MODE_CTRL |= RB_RTC_TMR_EN | (t);
R8_SAFE_ACCESS_SIG = 0;
}
/*******************************************************************************
* Function Name : RTC_TRIGFunCfg
* Description : RTC时间触发模式配置
* Input : cyc: 相对当前时间的触发间隔时间，基于LSE/LSI时钟周期数
* Return : None
*******************************************************************************/
void RTC_TRIGFunCfg( UINT32 cyc )
{
UINT32 t;
t = RTC_GetCycle32k() + cyc;
if( t>0xA8C00000) t -= 0xA8C00000;
if( t&0xFFFF ) t = t+0x10000;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R32_RTC_TRIG = t;
R8_RTC_MODE_CTRL |= RB_RTC_TRIG_EN;
R8_SAFE_ACCESS_SIG = 0;
}
/*******************************************************************************
* Function Name : RTC_ModeFunDisable
* Description : RTC 模式功能关闭
* Input : m: 需要关闭的当前模式
* Return : None
*******************************************************************************/
void RTC_ModeFunDisable( RTC_MODETypeDef m )
{
UINT8 i=0;
if( m == RTC_TRIG_MODE ) i |= RB_RTC_TRIG_EN;
else if( m == RTC_TMR_MODE ) i |= RB_RTC_TMR_EN;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
R8_RTC_MODE_CTRL &= ~(i);
R8_SAFE_ACCESS_SIG = 0;
}
/*******************************************************************************
* Function Name : RTC_GetITFlag
* Description : 获取RTC中断标志
* Input : f:
refer to RTC_EVENTTypeDef
* Return : 中断标志状态:
0 - 未发生事件
(!0) - 发生事件
*******************************************************************************/
UINT8 RTC_GetITFlag( RTC_EVENTTypeDef f )
{
if( f == RTC_TRIG_EVENT )
return ( R8_RTC_FLAG_CTRL & RB_RTC_TRIG_FLAG );
else
return ( R8_RTC_FLAG_CTRL & RB_RTC_TMR_FLAG );
}
/*******************************************************************************
* Function Name : RTC_ClearITFlag
* Description : 清除RTC中断标志
* Input : f:
refer to RTC_EVENTTypeDef
* Return : None
*******************************************************************************/
void RTC_ClearITFlag( RTC_EVENTTypeDef f )
{
switch( f )
{
case RTC_TRIG_EVENT:
R8_RTC_FLAG_CTRL = RB_RTC_TRIG_CLR;
break;
case RTC_TMR_EVENT:
R8_RTC_FLAG_CTRL = RB_RTC_TMR_CLR;
break;
default :
break;
}
}
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