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一、所用材料#xff1a;
STM32VGT6自制控制板 STM32CUBEMX#xff08;HAL库软件#xff09; MDK5
二、所学内容#xff1a;
通过HAL库配置四个GPIO输出口#xff0c;对其进行软件模拟SPI发送规则#xff0c;进而驱动OLED进行数…STM32-HAL库07-软件SPI驱动0.96寸OLED
一、所用材料
STM32VGT6自制控制板 STM32CUBEMXHAL库软件 MDK5
二、所学内容
通过HAL库配置四个GPIO输出口对其进行软件模拟SPI发送规则进而驱动OLED进行数字或字母显示暂不设计中文文字显示。
三、CUBEMX配置
第一步选取四个模拟GPIO输出引脚 第二步配置SYS 第三步配置RCC 第四步配置时钟 第五步文件配置 四、MDK5程序编写
1.配置OLED.h文件
#ifndef __OLED_H
#define __OLED_H//移植的时候根据所选芯片引入相应的头文件在main.h里面查看
#include stm32f4xx_hal.h
#include gpio.h//OLED模式设置
//0:4线串行模式
//1:并行8080模式
#define OLED_MODE 0
#define SIZE 16
#define XLevelL 0x00
#define XLevelH 0x10
#define Max_Column 128
#define Max_Row 64
#define Brightness 0xFF
#define X_WIDTH 128
#define Y_WIDTH 64 //移植的时候根据引脚分配进行修改//使用4线串行接口时使用 //RES
#define OLED_RST_Clr() HAL_GPIO_WritePin(OLED_RST_GPIO_Port, OLED_RST_Pin, GPIO_PIN_RESET) //RES RES 接RESRST引脚
#define OLED_RST_Set() HAL_GPIO_WritePin(OLED_RST_GPIO_Port, OLED_RST_Pin, GPIO_PIN_SET)//DC
#define OLED_DC_Clr() HAL_GPIO_WritePin(OLED_DC_GPIO_Port, OLED_DC_Pin, GPIO_PIN_RESET)
#define OLED_DC_Set() HAL_GPIO_WritePin(OLED_DC_GPIO_Port, OLED_DC_Pin, GPIO_PIN_SET)//SCLK,D0
#define OLED_SCLK_Clr() HAL_GPIO_WritePin(OLED_SCL_GPIO_Port, OLED_SCL_Pin, GPIO_PIN_RESET)
#define OLED_SCLK_Set() HAL_GPIO_WritePin(OLED_SCL_GPIO_Port, OLED_SCL_Pin, GPIO_PIN_SET)//SDIN,D1
#define OLED_SDIN_Clr() HAL_GPIO_WritePin(OLED_SDA_GPIO_Port, OLED_SDA_Pin, GPIO_PIN_RESET)
#define OLED_SDIN_Set() HAL_GPIO_WritePin(OLED_SDA_GPIO_Port, OLED_SDA_Pin, GPIO_PIN_SET)#define OLED_CMD 0 //写命令
#define OLED_DATA 1 //写数据//OLED控制用函数
void OLED_WR_Byte(unsigned char dat,unsigned char cmd);
void OLED_Display_On(void);
void OLED_Display_Off(void);
void OLED_Init(void);
void OLED_Clear(void);
void OLED_DrawPoint(unsigned char x,unsigned char y,unsigned char t);
void OLED_Fill(unsigned char x1,unsigned char y1,unsigned char x2,unsigned char y2,unsigned char dot);
void OLED_ShowChar(unsigned char x,unsigned char y,unsigned char chr);
void OLED_ShowNum(unsigned char x,unsigned char y,unsigned long num,unsigned char len,unsigned char size);
void OLED_Showint (unsigned char x,unsigned char y,unsigned long num);
void OLED_ShowString(unsigned char x,unsigned char y, unsigned char *p);
void OLED_Set_Pos(unsigned char x, unsigned char y);
void OLED_ShowCHinese(unsigned char x,unsigned char y,unsigned char no);
void OLED_DrawBMP(unsigned char x0, unsigned char y0,unsigned char x1, unsigned char y1,unsigned char BMP[]);
#endif
2.配置OLED.c文件 #include stdio.h
#include stdlib.h
#include OLED.h
#include OLED_Font.h//0.96寸OLED 屏幕简称SSD1106
//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 #if OLED_MODE1
//向SSD1106写入一个字节。
//dat:要写入的数据/命令
//cmd:数据/命令标志 0,表示命令;1,表示数据;
void OLED_WR_Byte(unsigned char dat,unsigned char cmd)
{DATAOUT(dat); if(cmd)OLED_DC_Set();else OLED_DC_Clr(); OLED_WR_Clr(); OLED_WR_Set();OLED_DC_Set();
}
#else
//向SSD1106写入一个字节。
//dat:要写入的数据/命令
//cmd:数据/命令标志 0,表示命令;1,表示数据;
void OLED_WR_Byte(unsigned char dat,unsigned char cmd)
{ unsigned char i; if(cmd)OLED_DC_Set();else OLED_DC_Clr(); for(i0;i8;i){ OLED_SCLK_Clr();if(dat0x80)OLED_SDIN_Set();else OLED_SDIN_Clr();OLED_SCLK_Set();dat1; } OLED_DC_Set();
}
#endifvoid OLED_Set_Pos(unsigned char x, unsigned char y)
{ OLED_WR_Byte(0xb0y,OLED_CMD);OLED_WR_Byte(((x0xf0)4)|0x10,OLED_CMD);OLED_WR_Byte((x0x0f)|0x01,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 ONOLED_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 OFFOLED_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)
{ unsigned char i,n; for(i0;i8;i) { OLED_WR_Byte (0xb0i,OLED_CMD); //设置页地址0~7OLED_WR_Byte (0x02,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(n0;n128;n)OLED_WR_Byte(0,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(unsigned char x,unsigned char y,unsigned char chr)
{ unsigned char c0,i0; cchr- ;//得到偏移后的值 if(xMax_Column-1){x0;yy2;}if(SIZE 16){OLED_Set_Pos(x,y); for(i0;i8;i)OLED_WR_Byte(F8X16[c*16i],OLED_DATA);OLED_Set_Pos(x,y1);for(i0;i8;i)OLED_WR_Byte(F8X16[c*16i8],OLED_DATA);}else { OLED_Set_Pos(x,y1);for(i0;i6;i)OLED_WR_Byte(F6x8[c][i],OLED_DATA);}
}
//m^n函数
unsigned long oled_pow(unsigned char m,unsigned char n)
{unsigned long result1; 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(unsigned char x,unsigned char y,unsigned long num,unsigned char len,unsigned char size)
{ unsigned char t,temp;unsigned char enshow0; for(t0;tlen;t){temp(num/oled_pow(10,len-t-1))%10;if(enshow0t(len-1)){if(temp0){OLED_ShowChar(x(size/2)*t,y,0);continue;}else enshow1; }OLED_ShowChar(x(size/2)*t,y,temp0); }
}
void OLED_Showint (unsigned char x,unsigned char y,unsigned long num)
{unsigned long output;output num/10000;OLED_ShowChar(x8*0,y,output0);num num % 10000;output num/1000;OLED_ShowChar(x8*1,y,output0);num num % 1000; output num/100;OLED_ShowChar(x8*2,y,output0);num num % 100;output num/10;OLED_ShowChar(x8*3,y,output0);num num % 10; output num;OLED_ShowChar(x8*4,y,output0);
}
/*** brief 显示一个字符号串* param x : uint8_t 起点列坐标 * param y : uint8_t 起点行坐标 * param chr : uint8_t *字符串指针* retval 无*/
void OLED_ShowString(unsigned char x,unsigned char y,unsigned char *chr)
{unsigned char j0;while (chr[j]!\0){ OLED_ShowChar(x,y,chr[j]);x8;if(x120){x0;y2;}j;}
}
//显示汉字
void OLED_ShowCHinese(unsigned char x,unsigned char y,unsigned char no)
{ unsigned char t,adder0;OLED_Set_Pos(x,y); for(t0;t16;t){OLED_WR_Byte(Hzk[2*no][t],OLED_DATA);adder1;} OLED_Set_Pos(x,y1); for(t0;t16;t){ OLED_WR_Byte(Hzk[2*no1][t],OLED_DATA);adder1;}
}
/***********功能描述显示显示BMP图片128×64起始点坐标(x,y),x的范围0127y为页的范围07*****************/
void OLED_DrawBMP(unsigned char x0, unsigned char y0,unsigned char x1, unsigned char y1,unsigned char BMP[])
{ unsigned int j0;unsigned char x,y;if(y1%80) yy1/8; else yy1/81;for(yy0;yy1;y){OLED_Set_Pos(x0,y);for(xx0;xx1;x){ OLED_WR_Byte(BMP[j],OLED_DATA); }}
} //初始化SH1106
void OLED_Init(void)
{OLED_RST_Set();HAL_Delay(100);OLED_RST_Clr();HAL_Delay(100);OLED_RST_Set();OLED_WR_Byte(0xAE,OLED_CMD);//--turn off oled panelOLED_WR_Byte(0x02,OLED_CMD);//---set low column addressOLED_WR_Byte(0x10,OLED_CMD);//---set high column addressOLED_WR_Byte(0x40,OLED_CMD);//--set start line address Set Mapping RAM Display Start Line (0x00~0x3F)OLED_WR_Byte(0x81,OLED_CMD);//--set contrast control registerOLED_WR_Byte(0xCF,OLED_CMD); // Set SEG Output Current BrightnessOLED_WR_Byte(0xA1,OLED_CMD);//--Set SEG/Column Mapping 0xa0左右反置 0xa1正常OLED_WR_Byte(0xC8,OLED_CMD);//Set COM/Row Scan Direction 0xc0上下反置 0xc8正常OLED_WR_Byte(0xA6,OLED_CMD);//--set normal displayOLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64)OLED_WR_Byte(0x3f,OLED_CMD);//--1/64 dutyOLED_WR_Byte(0xD3,OLED_CMD);//-set display offset Shift Mapping RAM Counter (0x00~0x3F)OLED_WR_Byte(0x00,OLED_CMD);//-not offsetOLED_WR_Byte(0xd5,OLED_CMD);//--set display clock divide ratio/oscillator frequencyOLED_WR_Byte(0x80,OLED_CMD);//--set divide ratio, Set Clock as 100 Frames/SecOLED_WR_Byte(0xD9,OLED_CMD);//--set pre-charge periodOLED_WR_Byte(0xF1,OLED_CMD);//Set Pre-Charge as 15 Clocks Discharge as 1 ClockOLED_WR_Byte(0xDA,OLED_CMD);//--set com pins hardware configurationOLED_WR_Byte(0x12,OLED_CMD);OLED_WR_Byte(0xDB,OLED_CMD);//--set vcomhOLED_WR_Byte(0x40,OLED_CMD);//Set VCOM Deselect LevelOLED_WR_Byte(0x20,OLED_CMD);//-Set Page Addressing Mode (0x00/0x01/0x02)OLED_WR_Byte(0x02,OLED_CMD);//OLED_WR_Byte(0x8D,OLED_CMD);//--set Charge Pump enable/disableOLED_WR_Byte(0x14,OLED_CMD);//--set(0x10) disableOLED_WR_Byte(0xA4,OLED_CMD);// Disable Entire Display On (0xa4/0xa5)OLED_WR_Byte(0xA6,OLED_CMD);// Disable Inverse Display On (0xa6/a7) OLED_WR_Byte(0xAF,OLED_CMD);//--turn on oled panelOLED_WR_Byte(0xAF,OLED_CMD); /*display ON*/ OLED_Clear();OLED_Set_Pos(0,0);
}
