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484 lines
13 KiB
484 lines
13 KiB
/********************************** (C) COPYRIGHT *******************************
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* File Name : CH58x_clk.c
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* Author : WCH
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* Version : V1.2
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* Date : 2021/11/17
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* Description
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* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
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* SPDX-License-Identifier: Apache-2.0
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*******************************************************************************/
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#include "CH58x_common.h"
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/*********************************************************************
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* @fn LClk32K_Select
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*
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* @brief 32K 低频时钟来源
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*
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* @param hc - 选择32K使用内部还是外部
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*
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* @return none
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*/
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void LClk32K_Select(LClk32KTypeDef hc)
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{
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
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SAFEOPERATE;
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if(hc == Clk32K_LSI)
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{
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R8_CK32K_CONFIG &= ~RB_CLK_OSC32K_XT;
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}
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else
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{
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R8_CK32K_CONFIG |= RB_CLK_OSC32K_XT;
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}
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R8_SAFE_ACCESS_SIG = 0;
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}
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/*********************************************************************
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* @fn HSECFG_Current
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*
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* @brief HSE晶体 偏置电流配置
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*
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* @param c - 75%,100%,125%,150%
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*
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* @return none
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*/
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void HSECFG_Current(HSECurrentTypeDef c)
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{
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uint8_t x32M_c;
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x32M_c = R8_XT32M_TUNE;
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x32M_c = (x32M_c & 0xfc) | (c & 0x03);
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
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SAFEOPERATE;
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R8_XT32M_TUNE = x32M_c;
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R8_SAFE_ACCESS_SIG = 0;
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}
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/*********************************************************************
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* @fn HSECFG_Capacitance
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*
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* @brief HSE晶体 负载电容配置
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*
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* @param c - refer to HSECapTypeDef
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*
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* @return none
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*/
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void HSECFG_Capacitance(HSECapTypeDef c)
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{
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uint8_t x32M_c;
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x32M_c = R8_XT32M_TUNE;
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x32M_c = (x32M_c & 0x8f) | (c << 4);
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
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SAFEOPERATE;
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R8_XT32M_TUNE = x32M_c;
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R8_SAFE_ACCESS_SIG = 0;
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}
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/*********************************************************************
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* @fn LSECFG_Current
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*
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* @brief LSE晶体 偏置电流配置
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*
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* @param c - 70%,100%,140%,200%
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*
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* @return none
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*/
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void LSECFG_Current(LSECurrentTypeDef c)
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{
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uint8_t x32K_c;
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x32K_c = R8_XT32K_TUNE;
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x32K_c = (x32K_c & 0xfc) | (c & 0x03);
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
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SAFEOPERATE;
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R8_XT32K_TUNE = x32K_c;
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R8_SAFE_ACCESS_SIG = 0;
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}
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/*********************************************************************
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* @fn LSECFG_Capacitance
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*
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* @brief LSE晶体 负载电容配置
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*
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* @param c - refer to LSECapTypeDef
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*
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* @return none
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*/
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void LSECFG_Capacitance(LSECapTypeDef c)
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{
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uint8_t x32K_c;
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x32K_c = R8_XT32K_TUNE;
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x32K_c = (x32K_c & 0x0f) | (c << 4);
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
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SAFEOPERATE;
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R8_XT32K_TUNE = x32K_c;
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R8_SAFE_ACCESS_SIG = 0;
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}
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/*********************************************************************
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* @fn Calibration_LSI
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*
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* @brief 校准内部32K时钟
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*
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* @param cali_Lv - 校准等级选择 Level_32 - 用时 1.2ms 1000ppm (32M 主频) 1100ppm (64M 主频)
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* Level_64 - 用时 2.2ms 800ppm (32M 主频) 1000ppm (64M 主频)
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* Level_128 - 用时 4.2ms 600ppm (32M 主频) 800ppm (64M 主频)
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*
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* @return none
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*/
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void Calibration_LSI(Cali_LevelTypeDef cali_Lv)
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{
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UINT32 i;
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INT32 cnt_offset;
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UINT8 retry = 0;
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INT32 freq_sys;
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freq_sys = GetSysClock();
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
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SAFEOPERATE;
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R8_CK32K_CONFIG |= RB_CLK_OSC32K_FILT;
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R8_CK32K_CONFIG &= ~RB_CLK_OSC32K_FILT;
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R8_XT32K_TUNE &= ~3;
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R8_XT32K_TUNE |= 1;
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// 粗调
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
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SAFEOPERATE;
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R8_OSC_CAL_CTRL &= ~RB_OSC_CNT_TOTAL;
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R8_OSC_CAL_CTRL |= 1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
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SAFEOPERATE;
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R8_OSC_CAL_CTRL |= RB_OSC_CNT_EN;
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R16_OSC_CAL_CNT |= RB_OSC_CAL_OV_CLR;
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while(1)
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{
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while(!(R8_OSC_CAL_CTRL & RB_OSC_CNT_HALT));
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i = R16_OSC_CAL_CNT; // 用于丢弃
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while(R8_OSC_CAL_CTRL & RB_OSC_CNT_HALT);
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R16_OSC_CAL_CNT |= RB_OSC_CAL_OV_CLR;
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while(!(R8_OSC_CAL_CTRL & RB_OSC_CNT_HALT));
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i = R16_OSC_CAL_CNT; // 实时校准后采样值
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cnt_offset = (i & 0x3FFF) + R8_OSC_CAL_OV_CNT * 0x3FFF - 2000 * (freq_sys / 1000) / CAB_LSIFQ;
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if(((cnt_offset > -37 * (freq_sys / 1000) / CAB_LSIFQ) && (cnt_offset < 37 * (freq_sys / 1000) / CAB_LSIFQ)) || retry > 2)
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break;
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retry++;
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cnt_offset = (cnt_offset > 0) ? (((cnt_offset * 2) / (37 * (freq_sys / 1000) / CAB_LSIFQ)) + 1) / 2 : (((cnt_offset * 2) / (37 * (freq_sys / 1000) / CAB_LSIFQ)) - 1) / 2;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
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SAFEOPERATE;
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R16_INT32K_TUNE += cnt_offset;
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}
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// 细调
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// 配置细调参数后，丢弃2次捕获值（软件行为）上判断已有一次，这里只留一次
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while(!(R8_OSC_CAL_CTRL & RB_OSC_CNT_HALT));
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i = R16_OSC_CAL_CNT; // 用于丢弃
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R16_OSC_CAL_CNT |= RB_OSC_CAL_OV_CLR;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
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SAFEOPERATE;
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R8_OSC_CAL_CTRL &= ~RB_OSC_CNT_TOTAL;
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R8_OSC_CAL_CTRL |= cali_Lv;
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while(R8_OSC_CAL_CTRL & RB_OSC_CNT_HALT);
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while(!(R8_OSC_CAL_CTRL & RB_OSC_CNT_HALT));
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i = R16_OSC_CAL_CNT; // 实时校准后采样值
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cnt_offset = (i & 0x3FFF) + R8_OSC_CAL_OV_CNT * 0x3FFF - 4000 * (1 << cali_Lv) * (freq_sys / 1000000) / CAB_LSIFQ * 1000;
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cnt_offset = (cnt_offset > 0) ? ((((cnt_offset * (3200 / (1 << cali_Lv))) / (1366 * (freq_sys / 1000) / CAB_LSIFQ)) + 1) / 2) << 5 : ((((cnt_offset * (3200 / (1 << cali_Lv))) / (1366 * (freq_sys / 1000) / CAB_LSIFQ)) - 1) / 2) << 5;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
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SAFEOPERATE;
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R16_INT32K_TUNE += cnt_offset;
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R8_OSC_CAL_CTRL &= ~RB_OSC_CNT_EN;
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}
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/*********************************************************************
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* @fn RTCInitTime
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*
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* @brief RTC时钟初始化当前时间
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*
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* @param y - 配置年，MAX_Y = BEGYEAR + 44
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* @param mon - 配置月，MAX_MON = 12
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* @param d - 配置日，MAX_D = 31
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* @param h - 配置小时，MAX_H = 23
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* @param m - 配置分钟，MAX_M = 59
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* @param s - 配置秒，MAX_S = 59
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*
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* @return none
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*/
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void RTC_InitTime(uint16_t y, uint16_t mon, uint16_t d, uint16_t h, uint16_t m, uint16_t s)
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{
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uint32_t t;
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uint16_t year, month, day, sec2, t32k;
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volatile uint8_t clk_pin;
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year = y;
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month = mon;
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day = 0;
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while(year > BEGYEAR)
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{
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day += YearLength(year - 1);
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year--;
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}
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while(month > 1)
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{
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day += monthLength(IsLeapYear(y), month - 2);
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month--;
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}
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day += d - 1;
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sec2 = (h % 24) * 1800 + m * 30 + s / 2;
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t32k = (s & 1) ? (0x8000) : (0);
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t = sec2;
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t = t << 16 | t32k;
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do
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{
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clk_pin = (R8_CK32K_CONFIG & RB_32K_CLK_PIN);
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} while(clk_pin != (R8_CK32K_CONFIG & RB_32K_CLK_PIN));
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if(!clk_pin)
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{
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while(!clk_pin)
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{
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do
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{
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clk_pin = (R8_CK32K_CONFIG & RB_32K_CLK_PIN);
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} while(clk_pin != (R8_CK32K_CONFIG & RB_32K_CLK_PIN));
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}
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}
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
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SAFEOPERATE;
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R32_RTC_TRIG = day;
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R8_RTC_MODE_CTRL |= RB_RTC_LOAD_HI;
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while((R32_RTC_TRIG & 0x3FFF) != (R32_RTC_CNT_DAY & 0x3FFF));
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
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SAFEOPERATE;
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R32_RTC_TRIG = t;
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R8_RTC_MODE_CTRL |= RB_RTC_LOAD_LO;
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R8_SAFE_ACCESS_SIG = 0;
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}
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/*********************************************************************
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* @fn RTC_GetTime
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*
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* @brief 获取当前时间
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*
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* @param py - 获取到的年，MAX_Y = BEGYEAR + 44
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* @param pmon - 获取到的月，MAX_MON = 12
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* @param pd - 获取到的日，MAX_D = 31
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* @param ph - 获取到的小时，MAX_H = 23
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* @param pm - 获取到的分钟，MAX_M = 59
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* @param ps - 获取到的秒，MAX_S = 59
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*
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* @return none
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*/
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void RTC_GetTime(uint16_t *py, uint16_t *pmon, uint16_t *pd, uint16_t *ph, uint16_t *pm, uint16_t *ps)
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{
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uint32_t t;
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uint16_t day, sec2, t32k;
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day = R32_RTC_CNT_DAY & 0x3FFF;
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sec2 = R16_RTC_CNT_2S;
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t32k = R16_RTC_CNT_32K;
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t = sec2 * 2 + ((t32k < 0x8000) ? 0 : 1);
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*py = BEGYEAR;
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while(day >= YearLength(*py))
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{
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day -= YearLength(*py);
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(*py)++;
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}
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*pmon = 0;
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while(day >= monthLength(IsLeapYear(*py), *pmon))
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{
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day -= monthLength(IsLeapYear(*py), *pmon);
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(*pmon)++;
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}
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(*pmon)++;
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*pd = day + 1;
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*ph = t / 3600;
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*pm = t % 3600 / 60;
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*ps = t % 60;
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}
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/*********************************************************************
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* @fn RTC_SetCycle32k
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*
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* @brief 基于LSE/LSI时钟，配置当前RTC 周期数
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*
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* @param cyc - 配置周期计数初值，MAX_CYC = 0xA8BFFFFF = 2831155199
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*
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* @return none
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*/
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void RTC_SetCycle32k(uint32_t cyc)
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{
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volatile uint8_t clk_pin;
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do
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{
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clk_pin = (R8_CK32K_CONFIG & RB_32K_CLK_PIN);
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} while((clk_pin != (R8_CK32K_CONFIG & RB_32K_CLK_PIN)) || (!clk_pin));
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
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SAFEOPERATE;
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R32_RTC_TRIG = cyc;
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R8_RTC_MODE_CTRL |= RB_RTC_LOAD_LO;
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R8_SAFE_ACCESS_SIG = 0;
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}
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/*********************************************************************
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* @fn RTC_GetCycle32k
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*
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* @brief 基于LSE/LSI时钟，获取当前RTC 周期数
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*
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* @param none
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*
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* @return 当前周期数，MAX_CYC = 0xA8BFFFFF = 2831155199
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*/
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uint32_t RTC_GetCycle32k(void)
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{
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volatile uint32_t i;
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do
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{
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i = R32_RTC_CNT_32K;
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} while(i != R32_RTC_CNT_32K);
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return (i);
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}
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/*********************************************************************
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* @fn RTC_TMRFunCfg
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*
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* @brief RTC定时模式配置（注意定时基准固定为32768Hz）
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*
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* @param t - refer to RTC_TMRCycTypeDef
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*
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* @return none
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*/
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void RTC_TMRFunCfg(RTC_TMRCycTypeDef t)
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{
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
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SAFEOPERATE;
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R8_RTC_MODE_CTRL &= ~(RB_RTC_TMR_EN | RB_RTC_TMR_MODE);
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R8_RTC_MODE_CTRL |= RB_RTC_TMR_EN | (t);
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R8_SAFE_ACCESS_SIG = 0;
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}
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/*********************************************************************
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* @fn RTC_TRIGFunCfg
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*
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* @brief RTC时间触发模式配置
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*
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* @param cyc - 相对当前时间的触发间隔时间，基于LSE/LSI时钟周期数
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*
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* @return none
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*/
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void RTC_TRIGFunCfg(uint32_t cyc)
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{
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uint32_t t;
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t = RTC_GetCycle32k() + cyc;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
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SAFEOPERATE;
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R32_RTC_TRIG = t;
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R8_RTC_MODE_CTRL |= RB_RTC_TRIG_EN;
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R8_SAFE_ACCESS_SIG = 0;
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}
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/*********************************************************************
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* @fn RTC_ModeFunDisable
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*
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* @brief RTC 模式功能关闭
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*
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* @param m - 需要关闭的当前模式
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*
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* @return none
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*/
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void RTC_ModeFunDisable(RTC_MODETypeDef m)
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{
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uint8_t i = 0;
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if(m == RTC_TRIG_MODE)
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{
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i |= RB_RTC_TRIG_EN;
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}
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else if(m == RTC_TMR_MODE)
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{
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i |= RB_RTC_TMR_EN;
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}
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG1;
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R8_SAFE_ACCESS_SIG = SAFE_ACCESS_SIG2;
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SAFEOPERATE;
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R8_RTC_MODE_CTRL &= ~(i);
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R8_SAFE_ACCESS_SIG = 0;
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}
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/*********************************************************************
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* @fn RTC_GetITFlag
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*
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* @brief 获取RTC中断标志
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*
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* @param f - refer to RTC_EVENTTypeDef
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*
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* @return 中断标志状态
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*/
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uint8_t RTC_GetITFlag(RTC_EVENTTypeDef f)
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{
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if(f == RTC_TRIG_EVENT)
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{
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return (R8_RTC_FLAG_CTRL & RB_RTC_TRIG_FLAG);
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}
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else
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{
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return (R8_RTC_FLAG_CTRL & RB_RTC_TMR_FLAG);
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}
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}
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/*********************************************************************
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* @fn RTC_ClearITFlag
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*
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|
* @brief 清除RTC中断标志
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|
*
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|
* @param f - refer to RTC_EVENTTypeDef
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|
*
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|
* @return none
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|
*/
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|
void RTC_ClearITFlag(RTC_EVENTTypeDef f)
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|
{
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|
switch(f)
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|
{
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|
case RTC_TRIG_EVENT:
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|
R8_RTC_FLAG_CTRL = RB_RTC_TRIG_CLR;
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|
break;
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|
case RTC_TMR_EVENT:
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|
R8_RTC_FLAG_CTRL = RB_RTC_TMR_CLR;
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|
break;
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|
default:
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|
break;
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|
}
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|
}
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|
|