本次打算使用protues仿真显示时间,所需要的器件包含STM32F103C8,0.96OLED,DS1302模块。
一、protues仿真工程
1. 新建工程:填写工程名称和存储路径
2. 选择DEFAULT
3. 点击下一步
4. 点击创建固件项目,选择STM32F103C8
二、keil代码编写
主要需要编写3部分代码:main主函数、oled驱动代码、ds1302驱动代码
- 主函数main.c
#include "delay.h"
#include "sys.h"
#include "usart.h"
#include "ds1302.h"
#include "oled.h"
extern char DS1302_data_1[10];
extern char DS1302_data_2[8];
void display() // 显示界面
{
//显示时间
OLED_ShowChar(0,0,DS1302_data_1[0],1);
OLED_ShowChar(6,0,DS1302_data_1[1],12);
OLED_ShowChar(12,0,DS1302_data_1[2],12);
OLED_ShowChar(18,0,DS1302_data_1[3],12);
OLED_ShowChar(24,0,DS1302_data_1[4],12);
OLED_ShowChar(30,0,DS1302_data_1[5],12);
OLED_ShowChar(36,0,DS1302_data_1[6],12);
OLED_ShowChar(42,0,DS1302_data_1[7],12);
OLED_ShowChar(48,0,DS1302_data_1[8],12);
OLED_ShowChar(54,0,DS1302_data_1[9],12);
OLED_ShowChar(66,0,DS1302_data_2[0],12);
OLED_ShowChar(72,0,DS1302_data_2[1],12);
OLED_ShowChar(78,0,DS1302_data_2[2],12);
OLED_ShowChar(84,0,DS1302_data_2[3],12);
OLED_ShowChar(92,0,DS1302_data_2[4],12);
OLED_ShowChar(98,0,DS1302_data_2[5],12);
OLED_ShowChar(104,0,DS1302_data_2[6],12);
OLED_ShowChar(110,0,DS1302_data_2[7],12);
}
int main(void)
{
delay_init(); //延时函数初始化
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);// 设置中断优先级分组2
// uart_init(9600); //串口初始化为9600
ds1302_gpio_init();
ds1302_init();
OLED_Init(); //初始化OLED
OLED_Clear(); //OLED清屏
display(); //显示界面
while(1)
{
ds1302_read_realTime(); //读取时间
delay_ms(10);
display();
delay_ms(490);
}
}
2. oled驱动代码oled.c
#include "oled.h"
//#include "stdlib.h"
#include "oledfont.h"
#include "delay.h"
//OLED的显存
//存放格式如下.
//[0]0 1 2 3 ... 127
//[1]0 1 2 3 ... 127
//[2]0 1 2 3 ... 127
//[3]0 1 2 3 ... 127
//[4]0 1 2 3 ... 127
//[5]0 1 2 3 ... 127
//[6]0 1 2 3 ... 127
//[7]0 1 2 3 ... 127
u8 OLED_GRAM[128][8];
/**********************************************
//IIC Start
**********************************************/
void IIC_Start()
{
OLED_SCLK_Set() ;
OLED_SDIN_Set();
OLED_SDIN_Clr();
OLED_SCLK_Clr();
}
/**********************************************
//IIC Stop
**********************************************/
void IIC_Stop()
{
OLED_SCLK_Set() ;
// OLED_SCLK_Clr();
OLED_SDIN_Clr();
OLED_SDIN_Set();
}
void IIC_Wait_Ack()
{
OLED_SCLK_Set() ;
OLED_SCLK_Clr();
}
/**********************************************
// IIC Write byte
**********************************************/
void Write_IIC_Byte(unsigned char IIC_Byte)
{
unsigned char i;
unsigned char m,da;
da=IIC_Byte;
OLED_SCLK_Clr();
for(i=0;i<8;i++)
{
m=da;
m=m&0x80;
if(m==0x80)
{OLED_SDIN_Set();}
else OLED_SDIN_Clr();
da=da<<1;
OLED_SCLK_Set();
OLED_SCLK_Clr();
}
}
/**********************************************
// IIC Write Command
**********************************************/
void Write_IIC_Command(unsigned char IIC_Command)
{
IIC_Start();
Write_IIC_Byte(0x78); //Slave address,SA0=0
IIC_Wait_Ack();
Write_IIC_Byte(0x00); //write command
IIC_Wait_Ack();
Write_IIC_Byte(IIC_Command);
IIC_Wait_Ack();
IIC_Stop();
}
/**********************************************
// IIC Write Data
**********************************************/
void Write_IIC_Data(unsigned char IIC_Data)
{
IIC_Start();
Write_IIC_Byte(0x78); //D/C#=0; R/W#=0
IIC_Wait_Ack();
Write_IIC_Byte(0x40); //write data
IIC_Wait_Ack();
Write_IIC_Byte(IIC_Data);
IIC_Wait_Ack();
IIC_Stop();
}
void OLED_WR_Byte(unsigned dat,unsigned cmd)
{
if(cmd)
{
Write_IIC_Data(dat);
}
else {
Write_IIC_Command(dat);
}
}
/********************************************
// fill_Picture
********************************************/
void fill_picture(unsigned char fill_Data)
{
unsigned char m,n;
for(m=0;m<8;m++)
{
OLED_WR_Byte(0xb0+m,0); //page0-page1
OLED_WR_Byte(0x00,0); //low column start address
OLED_WR_Byte(0x10,0); //high column start address
for(n=0;n<128;n++)
{
OLED_WR_Byte(fill_Data,1);
}
}
}
//更新显存到LED
void OLED_Refresh_Gram(void)
{
u8 i,n;
for(i=0;i<8;i++)
{
OLED_WR_Byte (0xb0+i,OLED_CMD); //设置页地址(0~7)
OLED_WR_Byte (0x00,OLED_CMD); //设置显示位置—列低地址
OLED_WR_Byte (0x10,OLED_CMD); //设置显示位置—列高地址
for(n=0;n<128;n++)OLED_WR_Byte(OLED_GRAM[n][i],OLED_DATA);
}
}
//坐标设置
void OLED_Set_Pos(unsigned char x, unsigned char y)
{ OLED_WR_Byte(0xb0+y,OLED_CMD);
OLED_WR_Byte(((x&0xf0)>>4)|0x10,OLED_CMD);
OLED_WR_Byte((x&0x0f),OLED_CMD);
}
//开启OLED显示
void OLED_Display_On(void)
{
OLED_WR_Byte(0X8D,OLED_CMD); //SET DCDC命令
OLED_WR_Byte(0X14,OLED_CMD); //DCDC ON
OLED_WR_Byte(0XAF,OLED_CMD); //DISPLAY ON
}
//关闭OLED显示
void OLED_Display_Off(void)
{
OLED_WR_Byte(0X8D,OLED_CMD); //SET DCDC命令
OLED_WR_Byte(0X10,OLED_CMD); //DCDC OFF
OLED_WR_Byte(0XAE,OLED_CMD); //DISPLAY OFF
}
//清屏函数,清完屏,整个屏幕是黑色的!和没点亮一样!!!
void OLED_Clear(void)
{
u8 i,n;
for(i=0;i<8;i++)
{
OLED_WR_Byte (0xb0+i,OLED_CMD); //设置页地址(0~7)
OLED_WR_Byte (0x00,OLED_CMD); //设置显示位置—列低地址
OLED_WR_Byte (0x10,OLED_CMD); //设置显示位置—列高地址
for(n=0;n<128;n++)OLED_WR_Byte(0,OLED_DATA);
} //更新显示
}
void OLED_On(void)
{
u8 i,n;
for(i=0;i<8;i++)
{
OLED_WR_Byte (0xb0+i,OLED_CMD); //设置页地址(0~7)
OLED_WR_Byte (0x00,OLED_CMD); //设置显示位置—列低地址
OLED_WR_Byte (0x10,OLED_CMD); //设置显示位置—列高地址
for(n=0;n<128;n++)OLED_WR_Byte(1,OLED_DATA);
} //更新显示
}
//在指定位置显示一个字符,包括部分字符
//x:0~127
//y:0~63
//mode:0,反白显示;1,正常显示
//size:选择字体 16/12
void OLED_ShowChar(u8 x,u8 y,u8 chr,u8 Char_Size)
{
unsigned char c=0,i=0;
c=chr-' ';//得到偏移后的值
if(x>Max_Column-1){x=0;y=y+2;}
if(Char_Size ==16)
{
OLED_Set_Pos(x,y);
for(i=0;i<8;i++)
OLED_WR_Byte(F8X16[c*16+i],OLED_DATA);
OLED_Set_Pos(x,y+1);
for(i=0;i<8;i++)
OLED_WR_Byte(F8X16[c*16+i+8],OLED_DATA);
}
else {
OLED_Set_Pos(x,y);
for(i=0;i<6;i++)
OLED_WR_Byte(F6x8[c][i],OLED_DATA);
}
}
//m^n函数
u32 oled_pow(u8 m,u8 n)
{
u32 result=1;
while(n--)result*=m;
return result;
}
//显示2个数字
//x,y :起点坐标
//len :数字的位数
//size:字体大小
//mode:模式 0,填充模式;1,叠加模式
//num:数值(0~4294967295);
void OLED_ShowNum(u8 x,u8 y,u32 num,u8 len,u8 size2)
{
u8 t,temp;
u8 enshow=0;
for(t=0;t<len;t++)
{
temp=(num/oled_pow(10,len-t-1))%10;
if(enshow==0&&t<(len-1))
{
if(temp==0)
{
OLED_ShowChar(x+(size2/2)*t,y,' ',size2);
continue;
}else enshow=1;
}
OLED_ShowChar(x+(size2/2)*t,y,temp+'0',size2);
}
}
//显示一个字符号串
void OLED_ShowString(u8 x,u8 y,u8 *chr,u8 Char_Size)
{
unsigned char j=0;
while (chr[j]!='\0')
{ OLED_ShowChar(x,y,chr[j],Char_Size);
x+=8;
if(x>120){x=0;y+=2;}
j++;
}
}
//显示汉字
void OLED_ShowCHinese(u8 x,u8 y,u8 no)
{
u8 t,adder=0;
OLED_Set_Pos(x,y);
for(t=0;t<16;t++)
{
OLED_WR_Byte(Hzk[2*no][t],OLED_DATA);
adder+=1;
}
OLED_Set_Pos(x,y+1);
for(t=0;t<16;t++)
{
OLED_WR_Byte(Hzk[2*no+1][t],OLED_DATA);
adder+=1;
}
}
/***********功能描述:显示显示BMP图片128×64起始点坐标(x,y),x的范围0~127,y为页的范围0~7*****************/
void OLED_DrawBMP(unsigned char x0, unsigned char y0,unsigned char x1, unsigned char y1,unsigned char BMP[])
{
unsigned int j=0;
unsigned char x,y;
if(y1%8==0) y=y1/8;
else y=y1/8+1;
for(y=y0;y<y1;y++)
{
OLED_Set_Pos(x0,y);
for(x=x0;x<x1;x++)
{
OLED_WR_Byte(BMP[j++],OLED_DATA);
}
}
}
//初始化SSD1306
void OLED_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
// RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); //使能A端口时钟
// GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7;
// GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出
// GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//速度50MHz
// GPIO_Init(GPIOB, &GPIO_InitStructure); //初始化GPIOD3,6
// GPIO_SetBits(GPIOB,GPIO_Pin_6|GPIO_Pin_7);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); //使能A端口时钟
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13|GPIO_Pin_14;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//速度50MHz
GPIO_Init(GPIOB, &GPIO_InitStructure); //初始化GPIOD3,6
GPIO_SetBits(GPIOB,GPIO_Pin_13|GPIO_Pin_14);
delay_ms(800);
OLED_WR_Byte(0xAE,OLED_CMD);//--display off
OLED_WR_Byte(0x00,OLED_CMD);//---set low column address
OLED_WR_Byte(0x10,OLED_CMD);//---set high column address
OLED_WR_Byte(0x40,OLED_CMD);//--set start line address
OLED_WR_Byte(0xB0,OLED_CMD);//--set page address
OLED_WR_Byte(0x81,OLED_CMD);// contract control
OLED_WR_Byte(0xFF,OLED_CMD);//--128
OLED_WR_Byte(0xA1,OLED_CMD);//set segment remap
OLED_WR_Byte(0xA6,OLED_CMD);//--normal / reverse
OLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64)
OLED_WR_Byte(0x3F,OLED_CMD);//--1/32 duty
OLED_WR_Byte(0xC8,OLED_CMD);//Com scan direction
OLED_WR_Byte(0xD3,OLED_CMD);//-set display offset
OLED_WR_Byte(0x00,OLED_CMD);//
OLED_WR_Byte(0xD5,OLED_CMD);//set osc division
OLED_WR_Byte(0x80,OLED_CMD);//
OLED_WR_Byte(0xD8,OLED_CMD);//set area color mode off
OLED_WR_Byte(0x05,OLED_CMD);//
OLED_WR_Byte(0xD9,OLED_CMD);//Set Pre-Charge Period
OLED_WR_Byte(0xF1,OLED_CMD);//
OLED_WR_Byte(0xDA,OLED_CMD);//set com pin configuartion
OLED_WR_Byte(0x12,OLED_CMD);//
OLED_WR_Byte(0xDB,OLED_CMD);//set Vcomh
OLED_WR_Byte(0x30,OLED_CMD);//
OLED_WR_Byte(0x8D,OLED_CMD);//set charge pump enable
OLED_WR_Byte(0x14,OLED_CMD);//
OLED_WR_Byte(0xAF,OLED_CMD);//--turn on oled panel
}
- DS1302驱动代码
#include "ds1302.h"
#include "delay.h"
u8 read_time[7];
struct TIMEData TimeData;
char DS1302_data_1[10];
char DS1302_data_2[8];
/*
* SCLK PA2 和 CE PA0初始化
*/
void ds1302_gpio_init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_ResetBits(GPIOA,GPIO_Pin_2);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_ResetBits(GPIOA,GPIO_Pin_0);
}
/*
* 数据端口输出配置DATA_OUT
*/
void ds1302_DATAOUT_init() //配置双向I/O端口为输出态
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1; // DATA
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOA,&GPIO_InitStructure); // 初始化
GPIO_ResetBits(GPIOA,GPIO_Pin_1);
}
/*
* 数据端口输入配置DATA_IN
*/
void ds1302_DATAINPUT_init()//配置双向I/O端口为输入态
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1; //PA.1 DATA
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOA, &GPIO_InitStructure); //初始化GPIOA.1
}
/*
* /向DS1302发送一字节数据
*/
void ds1302_write_onebyte(uint8_t data)//向DS1302发送一字节数据
{
uint8_t count=0;
ds1302_DATAOUT_init(); // I/O配置为输出
SCLK_L; // 拉低时钟
for(count=0;count<8;count++)
{
SCLK_L; // 拉低时钟
if(data&0x01)
{
DATA_H;
}
else
{
DATA_L;
}//先准备好数据再发送
SCLK_H; //拉高时钟线,发送数据
data>>=1;
}
}
/*
* 向DS1302发送指定数据
*/
void ds1302_wirte_rig(uint8_t address,uint8_t data)//向指定寄存器地址发送数据
{
uint8_t temp1=address;
uint8_t temp2=data;
CE_L; // 拉低CE
SCLK_L; // 拉低SCLK
delay_us(1);
CE_H; // 拉高CE
delay_us(2);
ds1302_write_onebyte(temp1); // 写命令
ds1302_write_onebyte(temp2); // 写数据
CE_L; // 拉低CE
SCLK_L; // 拉低时钟
delay_us(2);
}
/*
* 从DS1302读取数据
*/
uint8_t ds1302_read_rig(uint8_t address)//从指定地址读取一字节数据
{
uint8_t temp3=address;
uint8_t count=0;
uint8_t return_data=0x00;
CE_L; // 拉低CE
SCLK_L; // 拉低SCLK
delay_us(3);
CE_H; // 拉高CE
delay_us(3);
ds1302_write_onebyte(temp3); // 写地址
ds1302_DATAINPUT_init();//配置I/O口为输入
for(count=0;count<8;count++)
{
delay_us(2);//使电平持续一段时间
return_data>>=1;
SCLK_H;
delay_us(4);//使高电平持续一段时间
SCLK_L;
delay_us(14);//延时14us后再去读取电压,更加准确
if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_1))
{return_data=return_data|0x80;}
}
delay_us(2);
CE_L; // 拉低CE
DATA_L; // 拉低SCLK
return return_data; // 返回数据
}
/*
* 初始化DS1302
*/
void ds1302_init()
{
ds1302_wirte_rig(0x8e,0x00); //关闭写保护
ds1302_wirte_rig(0x80,0x37); //seconds37秒
ds1302_wirte_rig(0x82,0x58); //minutes58分
ds1302_wirte_rig(0x84,0x14); //hours23时
ds1302_wirte_rig(0x86,0x27); //date27日
ds1302_wirte_rig(0x88,0x05); //months5月
ds1302_wirte_rig(0x8a,0x07); //days星期日
ds1302_wirte_rig(0x8c,0x24); //year2024年
ds1302_wirte_rig(0x8e,0x80);//关闭写保护
}
/*
* 读取DS1302数据
*/
void ds1302_read_time()
{
read_time[0]=ds1302_read_rig(0x81);//读秒
read_time[1]=ds1302_read_rig(0x83);//读分
read_time[2]=ds1302_read_rig(0x85);//读时
read_time[3]=ds1302_read_rig(0x87);//读日
read_time[4]=ds1302_read_rig(0x89);//读月
read_time[5]=ds1302_read_rig(0x8B);//读星期
read_time[6]=ds1302_read_rig(0x8D);//读年
}
void ds1302_read_realTime()
{
ds1302_read_time(); //BCD码转换为10进制
TimeData.second=(read_time[0]>>4)*10+(read_time[0]&0x0f);
TimeData.minute=((read_time[1]>>4)&(0x07))*10+(read_time[1]&0x0f);
TimeData.hour=(read_time[2]>>4)*10+(read_time[2]&0x0f);
TimeData.day=(read_time[3]>>4)*10+(read_time[3]&0x0f);
TimeData.month=(read_time[4]>>4)*10+(read_time[4]&0x0f);
TimeData.week=read_time[5];
TimeData.year=(read_time[6]>>4)*10+(read_time[6]&0x0f)+2000;
DS1302_data_1[0]='2';
DS1302_data_1[1]='0';
DS1302_data_1[2]='0'+(TimeData.year-2000)/10;
DS1302_data_1[3]='0'+(TimeData.year-2000)%10;
DS1302_data_1[4]='-';
DS1302_data_1[5]='0'+TimeData.month/10;
DS1302_data_1[6]='0'+TimeData.month%10;
DS1302_data_1[7]='-';
DS1302_data_1[8]='0'+TimeData.day/10;
DS1302_data_1[9]='0'+TimeData.day%10;
DS1302_data_2[0]='0'+TimeData.hour/10;
DS1302_data_2[1]='0'+TimeData.hour%10;
DS1302_data_2[2]=':';
DS1302_data_2[3]='0'+TimeData.minute/10;
DS1302_data_2[4]='0'+TimeData.minute%10;
DS1302_data_2[5]=':';
DS1302_data_2[6]='0'+TimeData.second/10;
DS1302_data_2[7]='0'+TimeData.second%10;
}