【WCH】STM32F103转CH32F203工程驱动DS1302案例
【WCH】STM32F103转CH32F203工程驱动DS1302案例
- 📌相关篇《STM32基于标准库工程驱动DS1302》
- 📍《关于CH32F203程序下载方式说明》
- 🎈有关CH32F203资料手册以及SDK资料:
https://www.wch.cn/products/CH32F103.html
- 📌《【WCH】基于STM32F1标准库程序烧录到CH32F203中运行方法》
- ✨本文仅对驱动DS1302内容案例进行移植说明,有关STM32F103转CH32F203工程请查看上面的相关篇内容。
- 🔖本移植工程资源也在相关篇中有所提供。
- ⚡从STM32F103工程移植到CH32F203时钟频率在
system_stm32f10x.c
文件中新增了CH32的96MHz的相关时钟配置参数。
- 🔧 96MHz频率配置的相关代码
#elif defined SYSCLK_FREQ_96MHz/********************************************************************** @fn SetSysClockTo96_HSE** @brief Sets System clock frequency to 96MHz and configure HCLK, PCLK2 and PCLK1 prescalers.** @return none*/
static void SetSysClockTo96(void)
{__IO uint32_t StartUpCounter = 0, HSEStatus = 0;RCC->CR |= ((uint32_t)RCC_CR_HSEON);/* Wait till HSE is ready and if Time out is reached exit */do{HSEStatus = RCC->CR & RCC_CR_HSERDY;StartUpCounter++;}while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));if((RCC->CR & RCC_CR_HSERDY) != RESET){HSEStatus = (uint32_t)0x01;}else{HSEStatus = (uint32_t)0x00;}if(HSEStatus == (uint32_t)0x01){/* HCLK = SYSCLK */RCC->CFGR |= (uint32_t)RCC_CFGR_HPRE_DIV1;/* PCLK2 = HCLK */RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE2_DIV1;/* PCLK1 = HCLK */RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE1_DIV2;/* CH32F20x_D6-PLL configuration: PLLCLK = HSE * 12 = 96 MHz (HSE=8Mhz)* CH32F20x_D8-PLL configuration: PLLCLK = HSE * 12 = 96 MHz (HSE=8Mhz)* CH32F20x_D8W-PLL configuration: PLLCLK = HSE/4 * 12 = 96 MHz(HSE=32Mhz)*/
// RCC->CFGR0 &= ( uint32_t )( ( uint32_t )~( RCC_PLLSRC | RCC_PLLXTPRE |
// RCC_PLLMULL ) );
// RCC->CFGR0 |= ( uint32_t )( RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL12 );/* PLL configuration: PLLCLK = HSE * 9 = 72 MHz */RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_PLLSRC | RCC_CFGR_PLLXTPRE |RCC_CFGR_PLLMULL));RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLSRC_HSE | RCC_CFGR_PLLXTPRE_HSE | RCC_CFGR_PLLMULL12);/* Enable PLL */RCC->CR |= RCC_CR_PLLON;/* Wait till PLL is ready */while((RCC->CR & RCC_CR_PLLRDY) == 0){}/* Select PLL as system clock source */RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_SW));RCC->CFGR |= (uint32_t)RCC_CFGR_SW_PLL;/* Wait till PLL is used as system clock source */while((RCC->CFGR & (uint32_t)RCC_CFGR_SWS) != (uint32_t)0x08){}}else{/** If HSE fails to start-up, the application will have wrong clock* configuration. User can add here some code to deal with this error*/}
}
-
🌴将原来STM32f103型号的项目,切换为CH32F203型号的即可。
-
🛠烧录配置
-
📜工程程序烧录到CH32F203后串口打印数据信息:
📝main主程序代码
#include "sys.h"
#include "delay.h"
#include "usart.h"
#include "DS1302.h"int main(void)
{DS1302_Time_t time = {0};const char *WEEK[7] = { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" };delay_init(); //延时函数初始化NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //设置NVIC中断分组2:2位抢占优先级,2位响应优先级uart_init(115200); //串口初始化为115200DS1302_Init(); //DS1302引脚初始化
// DS1302_WriteTime();//用于设置时间到DS1302中时,启用。while (1){DS1302_GetTime(&time);printf("Current Time: %02d-%02d-%02d %02d:%02d:%02d T:%s\\r\\n", time.year, time.month, time.day, time.hour, time.minute, time.second,WEEK[time.week-1]);delay_ms(2000);delay_ms(2000);}
}
DS1302驱动代码
- 🔖驱动代码依旧是原来使用STM32的代码,没有做任何修改。
- 🌿DS1302.c文件
#include "DS1302.h"
#include "delay.h"
#include "usart.h"
/*
DS1302接口:GPIOA_5 ->DS1302_RSTGPIOA_6 ->DS1302_DATGPIOA_7 ->DS1302_CLK
*/
//struct TIMEData TimeData;
//DS1302地址定义
#define DS1302_SEC_ADDR 0x80 //秒数据地址
#define DS1302_MIN_ADDR 0x82 //分数据地址
#define DS1302_HOUR_ADDR 0x84 //时数据地址
#define DS1302_DAY_ADDR 0x86 //日数据地址
#define DS1302_MONTH_ADDR 0x88 //月数据地址
#define DS1302_WEEK_ADDR 0x8a //星期数据地址
#define DS1302_YEAR_ADDR 0x8c //年数据地址
#define DS1302_CONTROL_ADDR 0x8e //控制数据地址
#define DS1302_CHARGER_ADDR 0x90 //充电功能地址
#define DS1302_CLKBURST_ADDR 0xbe//初始时间定义
static u8 time_buf[8] = {0x20,0x23,0x04,0x14,0x11,0x22,0x10,0x06};//初始时间2023年4月14号11点22分10秒 星期五
u8 sec_buf=0; //秒缓存
u8 sec_flag=0; //秒标志位//DS1302初始化函数
void DS1302_Init()
{/*1.GPIOC时钟*/RCC->APB2ENR |= 1<<2;/*2. 配置GPIOA_5/6/7模式*/GPIOA->CRL &= 0X000FFFFF;//先将 GPIOA 口的 CRL 寄存器的低 20 位清零,这样可以确保只修改 CRL 的高 12 位,不影响其他位。GPIOA->CRL |= 0X33300000;//将 GPIOA 口的前六个引脚(0~5)的模式和速率配置为推挽输出模式,最大输出速率50MHzGPIOA->ODR |=1<<6;//PA6输出高电平
}
//向DS1302写入一字节数据
void DS1302_WriteByte(u8 addr,u8 data)
{u8 i;DS1302_RST=0; //禁止数据传输 !!!这条很重要DS1302_CLK=0; //确保写数据前SCLK为低电平DS1302_RST=1; //启动DS1302总线 DS1302_OutPut_Mode();addr=addr&0xFE; //最低位置零,寄存器0位为0时写,为1时读for(i=0;i<8;i++) //写入目标地址:addr{if (addr&0x01) DS1302_OUT=1;else DS1302_OUT=0;DS1302_CLK=1; //时钟上升沿写入数据DS1302_CLK=0;addr=addr>>1;} for (i=0;i<8;i++) //写入数据:data{if(data&0x01) DS1302_OUT=1;else DS1302_OUT=0;DS1302_CLK=1; //时钟上升沿写入数据DS1302_CLK=0;data = data >> 1;}DS1302_CLK=1; // 将时钟电平置于高电平状态 ,处于已知状态DS1302_RST=0; //停止DS1302总线
}//从DS1302读出一字节数据
u8 DS1302_ReadByte(u8 addr)
{u8 i,temp; DS1302_RST=0; //这条很重要DS1302_CLK=0; //先将SCLK置低电平,确保写数居前SCLK被拉低DS1302_RST=1; //启动DS1302总线DS1302_OutPut_Mode();//写入目标地址:addraddr=addr|0x01; //最低位置高,寄存器0位为0时写,为1时读for(i=0;i<8;i++) {if (addr&0x01) DS1302_OUT=1;else DS1302_OUT=0;DS1302_CLK=1; //写数据DS1302_CLK=0;addr = addr >> 1;} //从DS1302读出数据:tempDS1302_InPut_Mode();for(i=0;i<8;i++){temp=temp>>1;if (DS1302_IN) temp|=0x80;else temp&=0x7F;DS1302_CLK=1;DS1302_CLK=0;} DS1302_CLK=1; //将时钟电平置于已知状态DS1302_RST=0; //停止DS1302总线return temp;
}
//向DS1302写入时钟数据,用于时间校准修改
void DS1302_WriteTime()
{DS1302_WriteByte(DS1302_CONTROL_ADDR,0x00); //关闭写保护 DS1302_WriteByte(DS1302_SEC_ADDR,0x80); //暂停时钟 //DS1302_WriteByte(DS1302_CHARGER_ADDR,0xa9); //涓流充电 DS1302_WriteByte(DS1302_YEAR_ADDR,time_buf[1]); //年 DS1302_WriteByte(DS1302_MONTH_ADDR,time_buf[2]); //月 DS1302_WriteByte(DS1302_DAY_ADDR,time_buf[3]); //日 DS1302_WriteByte(DS1302_HOUR_ADDR,time_buf[4]); //时 DS1302_WriteByte(DS1302_MIN_ADDR,time_buf[5]); //分DS1302_WriteByte(DS1302_SEC_ADDR,time_buf[6]); //秒DS1302_WriteByte(DS1302_WEEK_ADDR,time_buf[7]); //周 DS1302_WriteByte(DS1302_CHARGER_ADDR,0xA5);//打开充电功能 选择2K电阻充电方式DS1302_WriteByte(DS1302_CONTROL_ADDR,0x80);//打开写保护
}
//从DS1302读出时钟数据
void DS1302_ReadTime(void)
{time_buf[1]=DS1302_ReadByte(DS1302_YEAR_ADDR); //年 time_buf[2]=DS1302_ReadByte(DS1302_MONTH_ADDR); //月 time_buf[3]=DS1302_ReadByte(DS1302_DAY_ADDR); //日 time_buf[4]=DS1302_ReadByte(DS1302_HOUR_ADDR); //时 time_buf[5]=DS1302_ReadByte(DS1302_MIN_ADDR); //分 time_buf[6]=(DS1302_ReadByte(DS1302_SEC_ADDR))&0x7f; //秒,屏蔽秒的第7位,避免超出59time_buf[7]=DS1302_ReadByte(DS1302_WEEK_ADDR); //周
}//主函数
void DS1302_GetTime(DS1302_Time_t* time)
{ DS1302_ReadTime(); //读取时间time->year=(time_buf[0]>>4)*1000+(time_buf[0]&0x0F)*100+(time_buf[1]>>4)*10+(time_buf[1]&0x0F); //计算年份time->month=(time_buf[2]>>4)*10+(time_buf[2]&0x0F); //计算月份time->day=(time_buf[3]>>4)*10+(time_buf[3]&0x0F); //计算日期time->hour=(time_buf[4]>>4)*10+(time_buf[4]&0x0F); //计算小时time->minute=(time_buf[5]>>4)*10+(time_buf[5]&0x0F); //计算分钟time->second=(time_buf[6]>>4)*10+(time_buf[6]&0x0F); //计算秒钟time->week=(time_buf[7]&0x0F); //计算星期}
- 🌿DS1302.h文件
#ifndef _DS1302_H
#define _DS1302_H#include "stm32f10x.h"
#include "sys.h"//DS1302引脚定义,可根据实际情况自行修改端口定义
#define DS1302_OutPut_Mode() {GPIOA->CRL &= 0xF0FFFFFF;GPIOA->CRL |= 0x03000000;}//将 GPIOA 口的 PA6 引脚设置成推挽输出模式,并清空了其他引脚的配置
#define DS1302_InPut_Mode() {GPIOA->CRL &= 0xF0FFFFFF;GPIOA->CRL |= 0x08000000;}//PA7 引脚既可以作为普通的 GPIO 输出口#define DS1302_IN PAin(6)
#define DS1302_OUT PAout(6)
#define DS1302_RST PAout(5)
#define DS1302_CLK PAout(7)typedef struct TIMEData
{u16 year;u8 month;u8 day;u8 hour;u8 minute;u8 second;u8 week;
}DS1302_Time_t;void DS1302_Init(void);
void DS1302_WriteByte(u8 addr,u8 data);
u8 DS1302_ReadByte(u8 addr);
void DS1302_WriteTime(void);
void DS1302_ReadTime(void);
void DS1302_GetTime(DS1302_Time_t* time);#endif
📚工程源码
链接: https://pan.baidu.com/s/1L0e0rf7s2u5L-7_DF1bwsw
提取码: pden